./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/memsafety-ext2/complex_data_creation_test02-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 38b53e6a 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_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety-ext2/complex_data_creation_test02-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur --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 cb1edb9fb334d503cba549895692ff1d9d77f795ecc0798895274120b4ed179d --- 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-38b53e6 [2022-11-25 22:26:38,324 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 22:26:38,327 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 22:26:38,369 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 22:26:38,378 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 22:26:38,382 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 22:26:38,385 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 22:26:38,386 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 22:26:38,388 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 22:26:38,389 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 22:26:38,390 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 22:26:38,391 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 22:26:38,391 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 22:26:38,392 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 22:26:38,393 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 22:26:38,394 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 22:26:38,395 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 22:26:38,400 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 22:26:38,402 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 22:26:38,410 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 22:26:38,426 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 22:26:38,429 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 22:26:38,431 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 22:26:38,432 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 22:26:38,443 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 22:26:38,444 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 22:26:38,444 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 22:26:38,446 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 22:26:38,447 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 22:26:38,447 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 22:26:38,448 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 22:26:38,448 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 22:26:38,451 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 22:26:38,452 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 22:26:38,453 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 22:26:38,454 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 22:26:38,454 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 22:26:38,454 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 22:26:38,455 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 22:26:38,456 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 22:26:38,457 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 22:26:38,458 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2022-11-25 22:26:38,501 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 22:26:38,501 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 22:26:38,502 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 22:26:38,502 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 22:26:38,503 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 22:26:38,503 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 22:26:38,504 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-25 22:26:38,504 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-25 22:26:38,504 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-25 22:26:38,504 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-25 22:26:38,505 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-25 22:26:38,506 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-25 22:26:38,506 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-25 22:26:38,506 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-25 22:26:38,507 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-25 22:26:38,507 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-25 22:26:38,507 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-25 22:26:38,507 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-25 22:26:38,508 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-25 22:26:38,508 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-25 22:26:38,509 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 22:26:38,509 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 22:26:38,509 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-25 22:26:38,509 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 22:26:38,510 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 22:26:38,510 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 22:26:38,510 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-25 22:26:38,510 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-25 22:26:38,511 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-25 22:26:38,511 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 22:26:38,511 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-25 22:26:38,512 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 22:26:38,512 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 22:26:38,512 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 22:26:38,512 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 22:26:38,513 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 22:26:38,513 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 22:26:38,513 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-25 22:26:38,513 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 22:26:38,513 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-25 22:26:38,514 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 22:26:38,514 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-25 22:26:38,514 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_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cb1edb9fb334d503cba549895692ff1d9d77f795ecc0798895274120b4ed179d [2022-11-25 22:26:38,809 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 22:26:38,843 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 22:26:38,846 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 22:26:38,847 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 22:26:38,848 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 22:26:38,849 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/../../sv-benchmarks/c/memsafety-ext2/complex_data_creation_test02-2.i [2022-11-25 22:26:41,857 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 22:26:42,108 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 22:26:42,109 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/sv-benchmarks/c/memsafety-ext2/complex_data_creation_test02-2.i [2022-11-25 22:26:42,121 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/data/1e7f209f8/e0c23f2ef4ed4f5abd6acd918ae37d67/FLAGb00fa3c58 [2022-11-25 22:26:42,139 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/data/1e7f209f8/e0c23f2ef4ed4f5abd6acd918ae37d67 [2022-11-25 22:26:42,142 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 22:26:42,143 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 22:26:42,145 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 22:26:42,145 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 22:26:42,152 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 22:26:42,154 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 10:26:42" (1/1) ... [2022-11-25 22:26:42,155 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6ca44640 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:26:42, skipping insertion in model container [2022-11-25 22:26:42,155 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 10:26:42" (1/1) ... [2022-11-25 22:26:42,162 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 22:26:42,224 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 22:26:42,577 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 22:26:42,589 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) [2022-11-25 22:26:42,590 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@3e572b5c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:26:42, skipping insertion in model container [2022-11-25 22:26:42,590 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 22:26:42,590 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2022-11-25 22:26:42,592 INFO L158 Benchmark]: Toolchain (without parser) took 448.15ms. Allocated memory is still 169.9MB. Free memory was 137.4MB in the beginning and 134.5MB in the end (delta: 2.9MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-11-25 22:26:42,593 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 125.8MB. Free memory is still 95.0MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 22:26:42,594 INFO L158 Benchmark]: CACSL2BoogieTranslator took 445.61ms. Allocated memory is still 169.9MB. Free memory was 137.4MB in the beginning and 134.5MB in the end (delta: 2.9MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-11-25 22:26:42,595 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 125.8MB. Free memory is still 95.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 445.61ms. Allocated memory is still 169.9MB. Free memory was 137.4MB in the beginning and 134.5MB in the end (delta: 2.9MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 556]: 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_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety-ext2/complex_data_creation_test02-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur --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 cb1edb9fb334d503cba549895692ff1d9d77f795ecc0798895274120b4ed179d --- 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-38b53e6 [2022-11-25 22:26:44,974 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 22:26:44,976 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 22:26:45,017 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 22:26:45,018 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 22:26:45,022 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 22:26:45,024 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 22:26:45,028 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 22:26:45,030 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 22:26:45,036 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 22:26:45,037 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 22:26:45,040 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 22:26:45,040 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 22:26:45,042 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 22:26:45,044 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 22:26:45,051 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 22:26:45,051 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 22:26:45,052 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 22:26:45,053 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 22:26:45,055 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 22:26:45,056 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 22:26:45,060 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 22:26:45,061 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 22:26:45,062 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 22:26:45,075 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 22:26:45,075 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 22:26:45,076 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 22:26:45,078 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 22:26:45,078 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 22:26:45,079 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 22:26:45,080 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 22:26:45,081 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 22:26:45,082 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 22:26:45,083 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 22:26:45,100 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 22:26:45,101 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 22:26:45,101 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 22:26:45,101 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 22:26:45,102 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 22:26:45,103 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 22:26:45,103 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 22:26:45,109 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2022-11-25 22:26:45,151 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 22:26:45,151 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 22:26:45,152 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 22:26:45,152 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 22:26:45,153 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 22:26:45,153 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 22:26:45,153 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-25 22:26:45,154 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-25 22:26:45,154 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-25 22:26:45,154 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-25 22:26:45,155 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-25 22:26:45,155 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-25 22:26:45,156 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-25 22:26:45,156 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-25 22:26:45,156 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 22:26:45,156 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 22:26:45,157 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-25 22:26:45,157 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 22:26:45,157 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 22:26:45,157 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 22:26:45,157 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-25 22:26:45,157 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-25 22:26:45,158 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-25 22:26:45,158 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 22:26:45,158 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-25 22:26:45,158 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-25 22:26:45,158 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-25 22:26:45,158 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 22:26:45,159 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 22:26:45,159 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 22:26:45,159 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 22:26:45,160 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 22:26:45,160 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 22:26:45,160 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 22:26:45,160 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 22:26:45,160 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-11-25 22:26:45,161 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-25 22:26:45,161 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-25 22:26:45,161 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-25 22:26:45,161 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_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cb1edb9fb334d503cba549895692ff1d9d77f795ecc0798895274120b4ed179d [2022-11-25 22:26:45,497 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 22:26:45,524 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 22:26:45,528 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 22:26:45,529 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 22:26:45,530 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 22:26:45,532 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/../../sv-benchmarks/c/memsafety-ext2/complex_data_creation_test02-2.i [2022-11-25 22:26:48,576 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 22:26:48,886 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 22:26:48,893 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/sv-benchmarks/c/memsafety-ext2/complex_data_creation_test02-2.i [2022-11-25 22:26:48,910 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/data/6b39bae97/9f58729546c2474380e781449cd31375/FLAGdf46b0827 [2022-11-25 22:26:48,950 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/data/6b39bae97/9f58729546c2474380e781449cd31375 [2022-11-25 22:26:48,952 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 22:26:48,954 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 22:26:48,957 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 22:26:48,958 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 22:26:48,962 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 22:26:48,963 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 10:26:48" (1/1) ... [2022-11-25 22:26:48,964 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@57ac8846 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:26:48, skipping insertion in model container [2022-11-25 22:26:48,965 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 10:26:48" (1/1) ... [2022-11-25 22:26:48,972 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 22:26:49,013 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 22:26:49,371 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 22:26:49,397 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-11-25 22:26:49,415 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 22:26:49,483 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 22:26:49,496 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 22:26:49,566 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 22:26:49,610 INFO L208 MainTranslator]: Completed translation [2022-11-25 22:26:49,611 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:26:49 WrapperNode [2022-11-25 22:26:49,611 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 22:26:49,612 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 22:26:49,612 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 22:26:49,613 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 22:26:49,620 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:26:49" (1/1) ... [2022-11-25 22:26:49,655 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:26:49" (1/1) ... [2022-11-25 22:26:49,723 INFO L138 Inliner]: procedures = 129, calls = 62, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 98 [2022-11-25 22:26:49,724 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 22:26:49,725 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 22:26:49,726 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 22:26:49,726 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 22:26:49,737 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:26:49" (1/1) ... [2022-11-25 22:26:49,737 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:26:49" (1/1) ... [2022-11-25 22:26:49,756 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:26:49" (1/1) ... [2022-11-25 22:26:49,756 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:26:49" (1/1) ... [2022-11-25 22:26:49,767 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:26:49" (1/1) ... [2022-11-25 22:26:49,791 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:26:49" (1/1) ... [2022-11-25 22:26:49,797 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:26:49" (1/1) ... [2022-11-25 22:26:49,806 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:26:49" (1/1) ... [2022-11-25 22:26:49,810 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 22:26:49,815 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 22:26:49,815 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 22:26:49,815 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 22:26:49,816 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:26:49" (1/1) ... [2022-11-25 22:26:49,825 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 22:26:49,843 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 22:26:49,861 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 22:26:49,891 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 22:26:49,917 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-11-25 22:26:49,919 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-25 22:26:49,919 INFO L130 BoogieDeclarations]: Found specification of procedure create_data [2022-11-25 22:26:49,919 INFO L138 BoogieDeclarations]: Found implementation of procedure create_data [2022-11-25 22:26:49,919 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 22:26:49,920 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-25 22:26:49,920 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-25 22:26:49,920 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-25 22:26:49,920 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-25 22:26:49,920 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-11-25 22:26:49,920 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-25 22:26:49,921 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-25 22:26:49,921 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 22:26:49,921 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 22:26:50,126 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 22:26:50,128 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 22:26:51,190 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 22:26:51,200 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 22:26:51,200 INFO L300 CfgBuilder]: Removed 5 assume(true) statements. [2022-11-25 22:26:51,203 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 10:26:51 BoogieIcfgContainer [2022-11-25 22:26:51,203 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 22:26:51,206 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 22:26:51,206 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 22:26:51,210 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 22:26:51,210 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 10:26:48" (1/3) ... [2022-11-25 22:26:51,213 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18f949f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 10:26:51, skipping insertion in model container [2022-11-25 22:26:51,213 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:26:49" (2/3) ... [2022-11-25 22:26:51,214 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18f949f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 10:26:51, skipping insertion in model container [2022-11-25 22:26:51,215 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 10:26:51" (3/3) ... [2022-11-25 22:26:51,216 INFO L112 eAbstractionObserver]: Analyzing ICFG complex_data_creation_test02-2.i [2022-11-25 22:26:51,242 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 22:26:51,242 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 92 error locations. [2022-11-25 22:26:51,311 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 22:26:51,319 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;@4e069d28, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 22:26:51,319 INFO L358 AbstractCegarLoop]: Starting to check reachability of 92 error locations. [2022-11-25 22:26:51,324 INFO L276 IsEmpty]: Start isEmpty. Operand has 189 states, 93 states have (on average 2.161290322580645) internal successors, (201), 185 states have internal predecessors, (201), 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) [2022-11-25 22:26:51,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-25 22:26:51,331 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:26:51,332 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-25 22:26:51,333 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr26REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_dataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-11-25 22:26:51,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:26:51,339 INFO L85 PathProgramCache]: Analyzing trace with hash 5052905, now seen corresponding path program 1 times [2022-11-25 22:26:51,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-25 22:26:51,352 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1383166668] [2022-11-25 22:26:51,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:26:51,353 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 [2022-11-25 22:26:51,354 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/mathsat [2022-11-25 22:26:51,359 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/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) [2022-11-25 22:26:51,369 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/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 [2022-11-25 22:26:51,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:26:51,463 INFO L263 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 1 conjunts are in the unsatisfiable core [2022-11-25 22:26:51,467 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:26:51,489 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 22:26:51,490 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 22:26:51,490 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-25 22:26:51,491 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1383166668] [2022-11-25 22:26:51,492 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1383166668] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:26:51,492 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 22:26:51,492 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 22:26:51,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771201218] [2022-11-25 22:26:51,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:26:51,500 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-25 22:26:51,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-25 22:26:51,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-25 22:26:51,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-25 22:26:51,587 INFO L87 Difference]: Start difference. First operand has 189 states, 93 states have (on average 2.161290322580645) internal successors, (201), 185 states have internal predecessors, (201), 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 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 22:26:51,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:26:51,641 INFO L93 Difference]: Finished difference Result 189 states and 200 transitions. [2022-11-25 22:26:51,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-25 22:26:51,644 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2022-11-25 22:26:51,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:26:51,654 INFO L225 Difference]: With dead ends: 189 [2022-11-25 22:26:51,654 INFO L226 Difference]: Without dead ends: 187 [2022-11-25 22:26:51,656 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-25 22:26:51,660 INFO L413 NwaCegarLoop]: 200 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 200 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 22:26:51,662 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 200 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 22:26:51,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2022-11-25 22:26:51,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 187. [2022-11-25 22:26:51,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 92 states have (on average 2.108695652173913) internal successors, (194), 183 states have internal predecessors, (194), 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) [2022-11-25 22:26:51,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 198 transitions. [2022-11-25 22:26:51,754 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 198 transitions. Word has length 4 [2022-11-25 22:26:51,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:26:51,754 INFO L495 AbstractCegarLoop]: Abstraction has 187 states and 198 transitions. [2022-11-25 22:26:51,755 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 22:26:51,755 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 198 transitions. [2022-11-25 22:26:51,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-25 22:26:51,760 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:26:51,760 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-25 22:26:51,776 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/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 [2022-11-25 22:26:51,966 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/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 [2022-11-25 22:26:51,966 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_dataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-11-25 22:26:51,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:26:51,967 INFO L85 PathProgramCache]: Analyzing trace with hash 5050693, now seen corresponding path program 1 times [2022-11-25 22:26:51,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-25 22:26:51,968 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [105646058] [2022-11-25 22:26:51,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:26:51,969 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 [2022-11-25 22:26:51,969 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/mathsat [2022-11-25 22:26:51,970 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/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) [2022-11-25 22:26:51,974 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/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 [2022-11-25 22:26:52,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:26:52,046 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-25 22:26:52,048 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:26:52,103 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 [2022-11-25 22:26:52,151 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-25 22:26:52,152 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 [2022-11-25 22:26:52,175 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 22:26:52,175 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 22:26:52,176 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-25 22:26:52,176 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [105646058] [2022-11-25 22:26:52,176 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [105646058] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:26:52,176 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 22:26:52,177 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 22:26:52,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335254320] [2022-11-25 22:26:52,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:26:52,178 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 22:26:52,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-25 22:26:52,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 22:26:52,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 22:26:52,180 INFO L87 Difference]: Start difference. First operand 187 states and 198 transitions. Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 22:26:52,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:26:52,813 INFO L93 Difference]: Finished difference Result 207 states and 219 transitions. [2022-11-25 22:26:52,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 22:26:52,813 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2022-11-25 22:26:52,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:26:52,815 INFO L225 Difference]: With dead ends: 207 [2022-11-25 22:26:52,816 INFO L226 Difference]: Without dead ends: 207 [2022-11-25 22:26:52,816 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-25 22:26:52,817 INFO L413 NwaCegarLoop]: 154 mSDtfsCounter, 149 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 182 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 149 SdHoareTripleChecker+Valid, 287 SdHoareTripleChecker+Invalid, 195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-25 22:26:52,818 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [149 Valid, 287 Invalid, 195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 182 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-25 22:26:52,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2022-11-25 22:26:52,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 181. [2022-11-25 22:26:52,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 92 states have (on average 2.0434782608695654) internal successors, (188), 177 states have internal predecessors, (188), 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) [2022-11-25 22:26:52,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 192 transitions. [2022-11-25 22:26:52,833 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 192 transitions. Word has length 4 [2022-11-25 22:26:52,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:26:52,834 INFO L495 AbstractCegarLoop]: Abstraction has 181 states and 192 transitions. [2022-11-25 22:26:52,834 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 22:26:52,834 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 192 transitions. [2022-11-25 22:26:52,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-25 22:26:52,834 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:26:52,834 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-25 22:26:52,852 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/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)] Forceful destruction successful, exit code 0 [2022-11-25 22:26:53,046 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/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 [2022-11-25 22:26:53,046 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_dataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-11-25 22:26:53,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:26:53,047 INFO L85 PathProgramCache]: Analyzing trace with hash 5050694, now seen corresponding path program 1 times [2022-11-25 22:26:53,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-25 22:26:53,047 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [154192461] [2022-11-25 22:26:53,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:26:53,048 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 [2022-11-25 22:26:53,048 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/mathsat [2022-11-25 22:26:53,049 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/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) [2022-11-25 22:26:53,061 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/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 [2022-11-25 22:26:53,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:26:53,136 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-25 22:26:53,138 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:26:53,159 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 [2022-11-25 22:26:53,172 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 [2022-11-25 22:26:53,268 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:26:53,271 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 [2022-11-25 22:26:53,287 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-25 22:26:53,287 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 [2022-11-25 22:26:53,311 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 22:26:53,311 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 22:26:53,312 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-25 22:26:53,312 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [154192461] [2022-11-25 22:26:53,312 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [154192461] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:26:53,313 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 22:26:53,313 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 22:26:53,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420989993] [2022-11-25 22:26:53,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:26:53,314 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 22:26:53,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-25 22:26:53,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 22:26:53,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 22:26:53,316 INFO L87 Difference]: Start difference. First operand 181 states and 192 transitions. Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 22:26:54,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:26:54,195 INFO L93 Difference]: Finished difference Result 197 states and 211 transitions. [2022-11-25 22:26:54,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 22:26:54,199 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2022-11-25 22:26:54,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:26:54,201 INFO L225 Difference]: With dead ends: 197 [2022-11-25 22:26:54,201 INFO L226 Difference]: Without dead ends: 197 [2022-11-25 22:26:54,202 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-25 22:26:54,203 INFO L413 NwaCegarLoop]: 182 mSDtfsCounter, 28 mSDsluCounter, 162 mSDsCounter, 0 mSdLazyCounter, 237 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 344 SdHoareTripleChecker+Invalid, 239 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-25 22:26:54,204 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 344 Invalid, 239 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 237 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-25 22:26:54,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2022-11-25 22:26:54,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 186. [2022-11-25 22:26:54,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186 states, 97 states have (on average 2.0103092783505154) internal successors, (195), 182 states have internal predecessors, (195), 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) [2022-11-25 22:26:54,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 199 transitions. [2022-11-25 22:26:54,218 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 199 transitions. Word has length 4 [2022-11-25 22:26:54,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:26:54,218 INFO L495 AbstractCegarLoop]: Abstraction has 186 states and 199 transitions. [2022-11-25 22:26:54,219 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 22:26:54,219 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 199 transitions. [2022-11-25 22:26:54,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-25 22:26:54,219 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:26:54,219 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-25 22:26:54,231 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/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 [2022-11-25 22:26:54,431 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/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 [2022-11-25 22:26:54,431 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_dataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-11-25 22:26:54,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:26:54,432 INFO L85 PathProgramCache]: Analyzing trace with hash 156571597, now seen corresponding path program 1 times [2022-11-25 22:26:54,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-25 22:26:54,432 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [925487773] [2022-11-25 22:26:54,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:26:54,433 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 [2022-11-25 22:26:54,433 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/mathsat [2022-11-25 22:26:54,435 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/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) [2022-11-25 22:26:54,456 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/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 [2022-11-25 22:26:54,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:26:54,524 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-25 22:26:54,525 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:26:54,532 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 [2022-11-25 22:26:54,547 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 22:26:54,547 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 22:26:54,548 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-25 22:26:54,548 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [925487773] [2022-11-25 22:26:54,548 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [925487773] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:26:54,548 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 22:26:54,548 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 22:26:54,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095590764] [2022-11-25 22:26:54,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:26:54,549 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 22:26:54,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-25 22:26:54,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 22:26:54,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 22:26:54,552 INFO L87 Difference]: Start difference. First operand 186 states and 199 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 22:26:54,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:26:54,944 INFO L93 Difference]: Finished difference Result 209 states and 222 transitions. [2022-11-25 22:26:54,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 22:26:54,946 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-25 22:26:54,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:26:54,947 INFO L225 Difference]: With dead ends: 209 [2022-11-25 22:26:54,947 INFO L226 Difference]: Without dead ends: 209 [2022-11-25 22:26:54,948 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 22:26:54,949 INFO L413 NwaCegarLoop]: 159 mSDtfsCounter, 64 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 232 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-25 22:26:54,949 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 232 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-25 22:26:54,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2022-11-25 22:26:54,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 184. [2022-11-25 22:26:54,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 97 states have (on average 1.9793814432989691) internal successors, (192), 180 states have internal predecessors, (192), 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) [2022-11-25 22:26:54,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 196 transitions. [2022-11-25 22:26:54,960 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 196 transitions. Word has length 5 [2022-11-25 22:26:54,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:26:54,960 INFO L495 AbstractCegarLoop]: Abstraction has 184 states and 196 transitions. [2022-11-25 22:26:54,960 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 22:26:54,960 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 196 transitions. [2022-11-25 22:26:54,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-25 22:26:54,961 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:26:54,961 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-25 22:26:54,976 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/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)] Forceful destruction successful, exit code 0 [2022-11-25 22:26:55,172 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/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 [2022-11-25 22:26:55,173 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_dataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-11-25 22:26:55,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:26:55,173 INFO L85 PathProgramCache]: Analyzing trace with hash 156571598, now seen corresponding path program 1 times [2022-11-25 22:26:55,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-25 22:26:55,174 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1301491018] [2022-11-25 22:26:55,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:26:55,174 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 [2022-11-25 22:26:55,174 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/mathsat [2022-11-25 22:26:55,176 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/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) [2022-11-25 22:26:55,180 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/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 [2022-11-25 22:26:55,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:26:55,249 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-25 22:26:55,251 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:26:55,267 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 [2022-11-25 22:26:55,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 22:26:55,285 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 22:26:55,285 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-25 22:26:55,286 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1301491018] [2022-11-25 22:26:55,286 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1301491018] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:26:55,286 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 22:26:55,286 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 22:26:55,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791675016] [2022-11-25 22:26:55,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:26:55,287 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 22:26:55,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-25 22:26:55,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 22:26:55,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 22:26:55,289 INFO L87 Difference]: Start difference. First operand 184 states and 196 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 22:26:55,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:26:55,770 INFO L93 Difference]: Finished difference Result 182 states and 193 transitions. [2022-11-25 22:26:55,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 22:26:55,771 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-25 22:26:55,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:26:55,772 INFO L225 Difference]: With dead ends: 182 [2022-11-25 22:26:55,772 INFO L226 Difference]: Without dead ends: 182 [2022-11-25 22:26:55,772 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 22:26:55,773 INFO L413 NwaCegarLoop]: 180 mSDtfsCounter, 11 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 273 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-25 22:26:55,774 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 273 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-25 22:26:55,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2022-11-25 22:26:55,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 182. [2022-11-25 22:26:55,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 97 states have (on average 1.9484536082474226) internal successors, (189), 178 states have internal predecessors, (189), 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) [2022-11-25 22:26:55,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 193 transitions. [2022-11-25 22:26:55,783 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 193 transitions. Word has length 5 [2022-11-25 22:26:55,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:26:55,784 INFO L495 AbstractCegarLoop]: Abstraction has 182 states and 193 transitions. [2022-11-25 22:26:55,784 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 22:26:55,784 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 193 transitions. [2022-11-25 22:26:55,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-25 22:26:55,785 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:26:55,785 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 22:26:55,800 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/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)] Forceful destruction successful, exit code 0 [2022-11-25 22:26:55,996 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/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 [2022-11-25 22:26:55,997 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_dataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-11-25 22:26:55,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:26:55,997 INFO L85 PathProgramCache]: Analyzing trace with hash 666573431, now seen corresponding path program 1 times [2022-11-25 22:26:55,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-25 22:26:55,998 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1280489371] [2022-11-25 22:26:55,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:26:55,998 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 [2022-11-25 22:26:55,998 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/mathsat [2022-11-25 22:26:56,000 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/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) [2022-11-25 22:26:56,001 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/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 [2022-11-25 22:26:56,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:26:56,089 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-25 22:26:56,093 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:26:56,119 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 [2022-11-25 22:26:56,181 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-25 22:26:56,181 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 [2022-11-25 22:26:56,247 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-25 22:26:56,254 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-25 22:26:56,297 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 [2022-11-25 22:26:56,304 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 [2022-11-25 22:26:56,330 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 22:26:56,330 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 22:26:56,331 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-25 22:26:56,331 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1280489371] [2022-11-25 22:26:56,331 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1280489371] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:26:56,331 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 22:26:56,332 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-25 22:26:56,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936169015] [2022-11-25 22:26:56,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:26:56,333 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-25 22:26:56,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-25 22:26:56,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-25 22:26:56,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-25 22:26:56,334 INFO L87 Difference]: Start difference. First operand 182 states and 193 transitions. Second operand has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 22:26:57,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:26:57,015 INFO L93 Difference]: Finished difference Result 184 states and 196 transitions. [2022-11-25 22:26:57,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 22:26:57,018 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-11-25 22:26:57,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:26:57,019 INFO L225 Difference]: With dead ends: 184 [2022-11-25 22:26:57,019 INFO L226 Difference]: Without dead ends: 184 [2022-11-25 22:26:57,019 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-11-25 22:26:57,020 INFO L413 NwaCegarLoop]: 184 mSDtfsCounter, 6 mSDsluCounter, 422 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 606 SdHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-25 22:26:57,021 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 606 Invalid, 151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 149 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-25 22:26:57,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2022-11-25 22:26:57,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 183. [2022-11-25 22:26:57,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 98 states have (on average 1.9387755102040816) internal successors, (190), 179 states have internal predecessors, (190), 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) [2022-11-25 22:26:57,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 194 transitions. [2022-11-25 22:26:57,029 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 194 transitions. Word has length 10 [2022-11-25 22:26:57,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:26:57,030 INFO L495 AbstractCegarLoop]: Abstraction has 183 states and 194 transitions. [2022-11-25 22:26:57,030 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 22:26:57,030 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 194 transitions. [2022-11-25 22:26:57,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-25 22:26:57,031 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:26:57,031 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 22:26:57,047 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/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)] Forceful destruction successful, exit code 0 [2022-11-25 22:26:57,242 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/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 [2022-11-25 22:26:57,243 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting create_dataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_dataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-11-25 22:26:57,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:26:57,243 INFO L85 PathProgramCache]: Analyzing trace with hash 623653565, now seen corresponding path program 1 times [2022-11-25 22:26:57,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-25 22:26:57,244 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1305943923] [2022-11-25 22:26:57,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:26:57,244 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 [2022-11-25 22:26:57,244 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/mathsat [2022-11-25 22:26:57,248 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/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) [2022-11-25 22:26:57,249 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/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 (8)] Waiting until timeout for monitored process [2022-11-25 22:26:57,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:26:57,335 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-25 22:26:57,337 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:26:57,378 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 22:26:57,378 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 22:26:57,378 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-25 22:26:57,381 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1305943923] [2022-11-25 22:26:57,381 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1305943923] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:26:57,382 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 22:26:57,382 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 22:26:57,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648999570] [2022-11-25 22:26:57,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:26:57,383 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 22:26:57,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-25 22:26:57,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 22:26:57,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 22:26:57,384 INFO L87 Difference]: Start difference. First operand 183 states and 194 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 22:26:57,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:26:57,427 INFO L93 Difference]: Finished difference Result 260 states and 275 transitions. [2022-11-25 22:26:57,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 22:26:57,428 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-11-25 22:26:57,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:26:57,430 INFO L225 Difference]: With dead ends: 260 [2022-11-25 22:26:57,430 INFO L226 Difference]: Without dead ends: 260 [2022-11-25 22:26:57,430 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-25 22:26:57,431 INFO L413 NwaCegarLoop]: 184 mSDtfsCounter, 81 mSDsluCounter, 364 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 548 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 22:26:57,432 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 548 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 22:26:57,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2022-11-25 22:26:57,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 224. [2022-11-25 22:26:57,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 224 states, 138 states have (on average 1.963768115942029) internal successors, (271), 219 states have internal predecessors, (271), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-25 22:26:57,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 275 transitions. [2022-11-25 22:26:57,466 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 275 transitions. Word has length 12 [2022-11-25 22:26:57,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:26:57,467 INFO L495 AbstractCegarLoop]: Abstraction has 224 states and 275 transitions. [2022-11-25 22:26:57,467 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 22:26:57,467 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 275 transitions. [2022-11-25 22:26:57,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-25 22:26:57,468 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:26:57,468 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 22:26:57,491 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/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 (8)] Forceful destruction successful, exit code 0 [2022-11-25 22:26:57,679 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/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 [2022-11-25 22:26:57,680 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting create_dataErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_dataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-11-25 22:26:57,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:26:57,680 INFO L85 PathProgramCache]: Analyzing trace with hash -2141569776, now seen corresponding path program 1 times [2022-11-25 22:26:57,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-25 22:26:57,680 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [556180165] [2022-11-25 22:26:57,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:26:57,681 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 [2022-11-25 22:26:57,681 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/mathsat [2022-11-25 22:26:57,682 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/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) [2022-11-25 22:26:57,692 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/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)] Waiting until timeout for monitored process [2022-11-25 22:26:57,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:26:57,799 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-25 22:26:57,803 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:26:57,831 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-25 22:26:57,831 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 1 case distinctions, treesize of input 9 treesize of output 15 [2022-11-25 22:26:57,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 22:26:57,851 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 22:26:57,851 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-25 22:26:57,851 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [556180165] [2022-11-25 22:26:57,851 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [556180165] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:26:57,852 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 22:26:57,852 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 22:26:57,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895714933] [2022-11-25 22:26:57,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:26:57,853 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 22:26:57,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-25 22:26:57,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 22:26:57,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 22:26:57,854 INFO L87 Difference]: Start difference. First operand 224 states and 275 transitions. Second operand has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 22:26:58,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:26:58,299 INFO L93 Difference]: Finished difference Result 227 states and 271 transitions. [2022-11-25 22:26:58,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 22:26:58,299 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-25 22:26:58,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:26:58,300 INFO L225 Difference]: With dead ends: 227 [2022-11-25 22:26:58,301 INFO L226 Difference]: Without dead ends: 227 [2022-11-25 22:26:58,301 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 22:26:58,302 INFO L413 NwaCegarLoop]: 139 mSDtfsCounter, 62 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 202 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-25 22:26:58,302 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 202 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-25 22:26:58,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2022-11-25 22:26:58,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 218. [2022-11-25 22:26:58,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218 states, 144 states have (on average 1.8125) internal successors, (261), 213 states have internal predecessors, (261), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-25 22:26:58,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 265 transitions. [2022-11-25 22:26:58,308 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 265 transitions. Word has length 13 [2022-11-25 22:26:58,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:26:58,309 INFO L495 AbstractCegarLoop]: Abstraction has 218 states and 265 transitions. [2022-11-25 22:26:58,309 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 22:26:58,309 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 265 transitions. [2022-11-25 22:26:58,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-25 22:26:58,310 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:26:58,310 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 22:26:58,321 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/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)] Forceful destruction successful, exit code 0 [2022-11-25 22:26:58,513 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/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 [2022-11-25 22:26:58,514 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting create_dataErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_dataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-11-25 22:26:58,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:26:58,514 INFO L85 PathProgramCache]: Analyzing trace with hash -2141569775, now seen corresponding path program 1 times [2022-11-25 22:26:58,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-25 22:26:58,515 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1106004995] [2022-11-25 22:26:58,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:26:58,515 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 [2022-11-25 22:26:58,515 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/mathsat [2022-11-25 22:26:58,516 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/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) [2022-11-25 22:26:58,517 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/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 [2022-11-25 22:26:58,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:26:58,609 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-25 22:26:58,611 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:26:58,631 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:26:58,632 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2022-11-25 22:26:58,643 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 10 treesize of output 8 [2022-11-25 22:26:58,653 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 22:26:58,654 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 22:26:58,654 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-25 22:26:58,654 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1106004995] [2022-11-25 22:26:58,654 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1106004995] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:26:58,655 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 22:26:58,655 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 22:26:58,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361631851] [2022-11-25 22:26:58,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:26:58,656 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 22:26:58,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-25 22:26:58,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 22:26:58,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 22:26:58,657 INFO L87 Difference]: Start difference. First operand 218 states and 265 transitions. Second operand has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 22:26:59,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:26:59,226 INFO L93 Difference]: Finished difference Result 239 states and 279 transitions. [2022-11-25 22:26:59,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 22:26:59,227 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-25 22:26:59,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:26:59,229 INFO L225 Difference]: With dead ends: 239 [2022-11-25 22:26:59,229 INFO L226 Difference]: Without dead ends: 239 [2022-11-25 22:26:59,229 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 22:26:59,230 INFO L413 NwaCegarLoop]: 143 mSDtfsCounter, 49 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 212 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-25 22:26:59,230 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 212 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-25 22:26:59,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2022-11-25 22:26:59,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 219. [2022-11-25 22:26:59,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 219 states, 154 states have (on average 1.655844155844156) internal successors, (255), 214 states have internal predecessors, (255), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-25 22:26:59,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 259 transitions. [2022-11-25 22:26:59,239 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 259 transitions. Word has length 13 [2022-11-25 22:26:59,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:26:59,239 INFO L495 AbstractCegarLoop]: Abstraction has 219 states and 259 transitions. [2022-11-25 22:26:59,239 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 22:26:59,240 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 259 transitions. [2022-11-25 22:26:59,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-25 22:26:59,240 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:26:59,240 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 22:26:59,258 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/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)] Forceful destruction successful, exit code 0 [2022-11-25 22:26:59,453 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/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 [2022-11-25 22:26:59,454 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting create_dataErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_dataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-11-25 22:26:59,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:26:59,454 INFO L85 PathProgramCache]: Analyzing trace with hash 533828155, now seen corresponding path program 1 times [2022-11-25 22:26:59,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-25 22:26:59,455 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [967864655] [2022-11-25 22:26:59,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:26:59,455 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 [2022-11-25 22:26:59,455 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/mathsat [2022-11-25 22:26:59,457 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/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) [2022-11-25 22:26:59,502 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/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)] Waiting until timeout for monitored process [2022-11-25 22:26:59,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:26:59,580 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-25 22:26:59,586 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:26:59,613 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-25 22:26:59,614 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 1 case distinctions, treesize of input 9 treesize of output 19 [2022-11-25 22:26:59,644 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 13 treesize of output 9 [2022-11-25 22:26:59,715 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 23 treesize of output 11 [2022-11-25 22:26:59,729 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 22:26:59,729 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 22:26:59,729 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-25 22:26:59,730 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [967864655] [2022-11-25 22:26:59,730 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [967864655] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:26:59,730 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 22:26:59,730 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 22:26:59,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279741183] [2022-11-25 22:26:59,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:26:59,731 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 22:26:59,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-25 22:26:59,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 22:26:59,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-25 22:26:59,732 INFO L87 Difference]: Start difference. First operand 219 states and 259 transitions. Second operand has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 22:27:00,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:27:00,601 INFO L93 Difference]: Finished difference Result 270 states and 323 transitions. [2022-11-25 22:27:00,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-25 22:27:00,602 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-11-25 22:27:00,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:27:00,604 INFO L225 Difference]: With dead ends: 270 [2022-11-25 22:27:00,605 INFO L226 Difference]: Without dead ends: 270 [2022-11-25 22:27:00,605 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-25 22:27:00,606 INFO L413 NwaCegarLoop]: 153 mSDtfsCounter, 26 mSDsluCounter, 260 mSDsCounter, 0 mSdLazyCounter, 254 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 413 SdHoareTripleChecker+Invalid, 260 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 254 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-25 22:27:00,606 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 413 Invalid, 260 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 254 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-25 22:27:00,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2022-11-25 22:27:00,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 225. [2022-11-25 22:27:00,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 160 states have (on average 1.65625) internal successors, (265), 220 states have internal predecessors, (265), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-25 22:27:00,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 269 transitions. [2022-11-25 22:27:00,616 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 269 transitions. Word has length 17 [2022-11-25 22:27:00,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:27:00,617 INFO L495 AbstractCegarLoop]: Abstraction has 225 states and 269 transitions. [2022-11-25 22:27:00,617 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 22:27:00,617 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 269 transitions. [2022-11-25 22:27:00,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-25 22:27:00,618 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:27:00,618 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 22:27:00,639 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/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)] Forceful destruction successful, exit code 0 [2022-11-25 22:27:00,839 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/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 [2022-11-25 22:27:00,839 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting create_dataErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_dataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-11-25 22:27:00,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:27:00,840 INFO L85 PathProgramCache]: Analyzing trace with hash 533828156, now seen corresponding path program 1 times [2022-11-25 22:27:00,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-25 22:27:00,840 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1850876692] [2022-11-25 22:27:00,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:27:00,841 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 [2022-11-25 22:27:00,841 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/mathsat [2022-11-25 22:27:00,842 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/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) [2022-11-25 22:27:00,843 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/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 (12)] Waiting until timeout for monitored process [2022-11-25 22:27:00,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:27:00,957 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-25 22:27:00,959 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:27:00,986 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-25 22:27:00,987 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 1 case distinctions, treesize of input 9 treesize of output 15 [2022-11-25 22:27:01,019 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 13 treesize of output 9 [2022-11-25 22:27:01,031 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 13 treesize of output 9 [2022-11-25 22:27:01,126 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 21 treesize of output 9 [2022-11-25 22:27:01,140 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 19 treesize of output 7 [2022-11-25 22:27:01,167 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 22:27:01,168 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 22:27:01,168 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-25 22:27:01,168 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1850876692] [2022-11-25 22:27:01,168 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1850876692] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:27:01,168 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 22:27:01,168 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-25 22:27:01,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922436664] [2022-11-25 22:27:01,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:27:01,169 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-25 22:27:01,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-25 22:27:01,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-25 22:27:01,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-25 22:27:01,170 INFO L87 Difference]: Start difference. First operand 225 states and 269 transitions. Second operand has 6 states, 5 states have (on average 3.2) internal successors, (16), 6 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 22:27:02,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:27:02,162 INFO L93 Difference]: Finished difference Result 227 states and 267 transitions. [2022-11-25 22:27:02,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-25 22:27:02,163 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 6 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-11-25 22:27:02,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:27:02,164 INFO L225 Difference]: With dead ends: 227 [2022-11-25 22:27:02,165 INFO L226 Difference]: Without dead ends: 227 [2022-11-25 22:27:02,165 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-11-25 22:27:02,165 INFO L413 NwaCegarLoop]: 163 mSDtfsCounter, 4 mSDsluCounter, 261 mSDsCounter, 0 mSdLazyCounter, 241 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 424 SdHoareTripleChecker+Invalid, 242 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 241 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-25 22:27:02,166 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 424 Invalid, 242 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 241 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-25 22:27:02,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2022-11-25 22:27:02,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 225. [2022-11-25 22:27:02,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 160 states have (on average 1.63125) internal successors, (261), 220 states have internal predecessors, (261), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-25 22:27:02,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 265 transitions. [2022-11-25 22:27:02,173 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 265 transitions. Word has length 17 [2022-11-25 22:27:02,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:27:02,174 INFO L495 AbstractCegarLoop]: Abstraction has 225 states and 265 transitions. [2022-11-25 22:27:02,174 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 6 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 22:27:02,174 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 265 transitions. [2022-11-25 22:27:02,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-11-25 22:27:02,175 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:27:02,175 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 22:27:02,186 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/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 (12)] Forceful destruction successful, exit code 0 [2022-11-25 22:27:02,379 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/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 [2022-11-25 22:27:02,380 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting create_dataErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_dataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-11-25 22:27:02,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:27:02,380 INFO L85 PathProgramCache]: Analyzing trace with hash -1553049946, now seen corresponding path program 1 times [2022-11-25 22:27:02,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-25 22:27:02,380 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2117727810] [2022-11-25 22:27:02,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:27:02,381 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 [2022-11-25 22:27:02,381 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/mathsat [2022-11-25 22:27:02,382 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/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) [2022-11-25 22:27:02,396 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/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 [2022-11-25 22:27:02,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:27:02,553 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-25 22:27:02,557 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:27:02,587 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-25 22:27:02,588 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 19 treesize of output 22 [2022-11-25 22:27:02,622 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-25 22:27:02,767 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-25 22:27:02,768 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 37 [2022-11-25 22:27:02,839 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 33 treesize of output 15 [2022-11-25 22:27:02,879 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-25 22:27:02,879 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 22:27:02,950 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_178 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| |c_create_data_#t~mem9.base| v_ArrVal_178) c_create_data_~data~0.base) (bvadd (_ bv4 32) c_create_data_~data~0.offset))) (_ bv1 1)))) is different from false [2022-11-25 22:27:02,966 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_178 (Array (_ BitVec 32) (_ BitVec 32)))) (= (bvadd (select |c_#valid| (let ((.cse0 (bvadd (_ bv4 32) c_create_data_~data~0.offset))) (select (select (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| c_create_data_~data~0.base) .cse0) v_ArrVal_178) c_create_data_~data~0.base) .cse0))) (_ bv1 1)) (_ bv0 1))) is different from false [2022-11-25 22:27:03,022 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-25 22:27:03,023 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 27 [2022-11-25 22:27:03,027 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 44 treesize of output 32 [2022-11-25 22:27:03,050 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 11 treesize of output 7 [2022-11-25 22:27:03,143 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 3 not checked. [2022-11-25 22:27:03,144 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-25 22:27:03,144 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2117727810] [2022-11-25 22:27:03,144 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2117727810] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 22:27:03,144 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1498047551] [2022-11-25 22:27:03,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:27:03,145 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-25 22:27:03,145 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/cvc4 [2022-11-25 22:27:03,179 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-25 22:27:03,267 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (14)] Waiting until timeout for monitored process [2022-11-25 22:27:03,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:27:03,523 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-25 22:27:03,529 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:27:03,551 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-25 22:27:03,551 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 19 treesize of output 22 [2022-11-25 22:27:03,592 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-25 22:27:03,737 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-25 22:27:03,737 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 37 [2022-11-25 22:27:03,777 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 33 treesize of output 15 [2022-11-25 22:27:03,784 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-25 22:27:03,784 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 22:27:03,818 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_220 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| |c_create_data_#t~mem9.base| v_ArrVal_220) c_create_data_~data~0.base) (bvadd (_ bv4 32) c_create_data_~data~0.offset))) (_ bv1 1)))) is different from false [2022-11-25 22:27:03,833 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_220 (Array (_ BitVec 32) (_ BitVec 32)))) (= (bvadd (select |c_#valid| (let ((.cse0 (bvadd (_ bv4 32) c_create_data_~data~0.offset))) (select (select (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| c_create_data_~data~0.base) .cse0) v_ArrVal_220) c_create_data_~data~0.base) .cse0))) (_ bv1 1)) (_ bv0 1))) is different from false [2022-11-25 22:27:03,858 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-25 22:27:03,859 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 27 [2022-11-25 22:27:03,864 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 44 treesize of output 32 [2022-11-25 22:27:03,868 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 11 treesize of output 7 [2022-11-25 22:27:03,912 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 3 not checked. [2022-11-25 22:27:03,912 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1498047551] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 22:27:03,912 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1479896914] [2022-11-25 22:27:03,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:27:03,913 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 22:27:03,913 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 22:27:03,918 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 22:27:03,930 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-25 22:27:04,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:27:04,060 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-25 22:27:04,063 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:27:04,081 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-25 22:27:04,082 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 19 treesize of output 22 [2022-11-25 22:27:04,102 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-25 22:27:04,165 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-25 22:27:04,165 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 37 [2022-11-25 22:27:04,210 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 33 treesize of output 15 [2022-11-25 22:27:04,217 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-25 22:27:04,217 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 22:27:05,283 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_262 (Array (_ BitVec 32) (_ BitVec 32)))) (= (bvadd (select |c_#valid| (let ((.cse0 (bvadd (_ bv4 32) c_create_data_~data~0.offset))) (select (select (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| c_create_data_~data~0.base) .cse0) v_ArrVal_262) c_create_data_~data~0.base) .cse0))) (_ bv1 1)) (_ bv0 1))) is different from false [2022-11-25 22:27:05,311 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-25 22:27:05,311 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 27 [2022-11-25 22:27:05,316 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 44 treesize of output 32 [2022-11-25 22:27:05,321 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 11 treesize of output 7 [2022-11-25 22:27:05,361 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2022-11-25 22:27:05,362 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1479896914] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 22:27:05,362 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-25 22:27:05,362 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 5, 6, 5, 6] total 17 [2022-11-25 22:27:05,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332638729] [2022-11-25 22:27:05,362 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-25 22:27:05,363 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-25 22:27:05,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-25 22:27:05,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-25 22:27:05,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=117, Unknown=7, NotChecked=130, Total=306 [2022-11-25 22:27:05,364 INFO L87 Difference]: Start difference. First operand 225 states and 265 transitions. Second operand has 18 states, 17 states have (on average 2.9411764705882355) internal successors, (50), 18 states have internal predecessors, (50), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 22:27:06,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:27:06,598 INFO L93 Difference]: Finished difference Result 232 states and 269 transitions. [2022-11-25 22:27:06,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 22:27:06,599 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.9411764705882355) internal successors, (50), 18 states have internal predecessors, (50), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2022-11-25 22:27:06,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:27:06,600 INFO L225 Difference]: With dead ends: 232 [2022-11-25 22:27:06,600 INFO L226 Difference]: Without dead ends: 232 [2022-11-25 22:27:06,601 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 108 SyntacticMatches, 4 SemanticMatches, 17 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=60, Invalid=135, Unknown=7, NotChecked=140, Total=342 [2022-11-25 22:27:06,601 INFO L413 NwaCegarLoop]: 152 mSDtfsCounter, 69 mSDsluCounter, 680 mSDsCounter, 0 mSdLazyCounter, 339 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 832 SdHoareTripleChecker+Invalid, 880 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 339 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 524 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-25 22:27:06,602 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 832 Invalid, 880 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 339 Invalid, 0 Unknown, 524 Unchecked, 1.1s Time] [2022-11-25 22:27:06,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2022-11-25 22:27:06,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 224. [2022-11-25 22:27:06,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 224 states, 160 states have (on average 1.61875) internal successors, (259), 219 states have internal predecessors, (259), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-25 22:27:06,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 263 transitions. [2022-11-25 22:27:06,609 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 263 transitions. Word has length 22 [2022-11-25 22:27:06,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:27:06,609 INFO L495 AbstractCegarLoop]: Abstraction has 224 states and 263 transitions. [2022-11-25 22:27:06,610 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 2.9411764705882355) internal successors, (50), 18 states have internal predecessors, (50), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 22:27:06,610 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 263 transitions. [2022-11-25 22:27:06,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-11-25 22:27:06,611 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:27:06,611 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 22:27:06,628 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-11-25 22:27:06,835 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/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)] Forceful destruction successful, exit code 0 [2022-11-25 22:27:07,020 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (14)] Forceful destruction successful, exit code 0 [2022-11-25 22:27:07,218 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt [2022-11-25 22:27:07,218 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting create_dataErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_dataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-11-25 22:27:07,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:27:07,218 INFO L85 PathProgramCache]: Analyzing trace with hash -1553049945, now seen corresponding path program 1 times [2022-11-25 22:27:07,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-25 22:27:07,219 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [626164666] [2022-11-25 22:27:07,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:27:07,219 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 [2022-11-25 22:27:07,219 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/mathsat [2022-11-25 22:27:07,220 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/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) [2022-11-25 22:27:07,221 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/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 [2022-11-25 22:27:07,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:27:07,401 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-25 22:27:07,405 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:27:07,438 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-25 22:27:07,438 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 1 case distinctions, treesize of input 9 treesize of output 15 [2022-11-25 22:27:07,448 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 10 treesize of output 8 [2022-11-25 22:27:07,476 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 13 treesize of output 9 [2022-11-25 22:27:07,487 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-25 22:27:07,703 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-25 22:27:07,703 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 46 treesize of output 45 [2022-11-25 22:27:07,717 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 24 [2022-11-25 22:27:07,859 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 31 treesize of output 13 [2022-11-25 22:27:07,868 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 19 treesize of output 7 [2022-11-25 22:27:07,907 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 22:27:07,907 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 22:27:08,382 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse1 (bvmul c_create_data_~counter~0 (_ bv4 32))) (.cse0 (bvadd (_ bv4 32) c_create_data_~data~0.offset))) (and (forall ((v_ArrVal_307 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_308 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv8 32) (select (select (store |c_#memory_$Pointer$.offset| |c_create_data_#t~mem9.base| v_ArrVal_308) c_create_data_~data~0.base) .cse0) .cse1) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_create_data_#t~mem9.base| v_ArrVal_307) c_create_data_~data~0.base) .cse0)))) (forall ((v_ArrVal_308 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (select (select (store |c_#memory_$Pointer$.offset| |c_create_data_#t~mem9.base| v_ArrVal_308) c_create_data_~data~0.base) .cse0))) (bvule (bvadd (_ bv4 32) .cse2 .cse1) (bvadd (_ bv8 32) .cse2 .cse1)))))) is different from false [2022-11-25 22:27:08,450 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv4 32) c_create_data_~data~0.offset))) (let ((.cse2 (bvmul c_create_data_~counter~0 (_ bv4 32))) (.cse0 (select (select |c_#memory_$Pointer$.base| c_create_data_~data~0.base) .cse1))) (and (forall ((v_ArrVal_307 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_308 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv8 32) (select (select (store |c_#memory_$Pointer$.offset| .cse0 v_ArrVal_308) c_create_data_~data~0.base) .cse1) .cse2) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| .cse0 v_ArrVal_307) c_create_data_~data~0.base) .cse1)))) (forall ((v_ArrVal_308 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (select (select (store |c_#memory_$Pointer$.offset| .cse0 v_ArrVal_308) c_create_data_~data~0.base) .cse1))) (bvule (bvadd (_ bv4 32) .cse3 .cse2) (bvadd (_ bv8 32) .cse3 .cse2))))))) is different from false [2022-11-25 22:27:08,533 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse2 (bvadd (_ bv4 32) c_create_data_~data~0.offset))) (let ((.cse1 (select (select |c_#memory_$Pointer$.base| c_create_data_~data~0.base) .cse2))) (and (forall ((v_ArrVal_308 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.offset| .cse1 v_ArrVal_308) c_create_data_~data~0.base) .cse2))) (bvule (bvadd (_ bv4 32) .cse0) (bvadd (_ bv8 32) .cse0)))) (forall ((v_ArrVal_307 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_308 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv8 32) (select (select (store |c_#memory_$Pointer$.offset| .cse1 v_ArrVal_308) c_create_data_~data~0.base) .cse2)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| .cse1 v_ArrVal_307) c_create_data_~data~0.base) .cse2))))))) is different from false [2022-11-25 22:27:08,555 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-25 22:27:08,555 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 46 [2022-11-25 22:27:08,569 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-25 22:27:08,569 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 36 [2022-11-25 22:27:08,577 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 62 treesize of output 50 [2022-11-25 22:27:08,582 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 96 treesize of output 78 [2022-11-25 22:27:08,595 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 40 treesize of output 32 [2022-11-25 22:27:08,599 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 66 treesize of output 58 [2022-11-25 22:27:08,801 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-25 22:27:08,802 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 36 [2022-11-25 22:27:08,813 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 54 treesize of output 36 [2022-11-25 22:27:08,934 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 3 not checked. [2022-11-25 22:27:08,934 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-25 22:27:08,935 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [626164666] [2022-11-25 22:27:08,935 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [626164666] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 22:27:08,935 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [707790500] [2022-11-25 22:27:08,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:27:08,935 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-25 22:27:08,936 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/cvc4 [2022-11-25 22:27:08,937 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-25 22:27:08,966 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (17)] Waiting until timeout for monitored process [2022-11-25 22:27:09,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:27:09,295 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-25 22:27:09,298 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:27:09,335 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-25 22:27:09,335 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 1 case distinctions, treesize of input 9 treesize of output 15 [2022-11-25 22:27:09,345 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 10 treesize of output 8 [2022-11-25 22:27:09,370 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 13 treesize of output 9 [2022-11-25 22:27:09,386 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-25 22:27:09,498 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-25 22:27:09,499 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 46 treesize of output 45 [2022-11-25 22:27:09,508 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 24 [2022-11-25 22:27:09,600 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 31 treesize of output 13 [2022-11-25 22:27:09,607 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 19 treesize of output 7 [2022-11-25 22:27:09,615 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 22:27:09,616 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 22:27:09,776 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse1 (bvmul c_create_data_~counter~0 (_ bv4 32))) (.cse0 (bvadd (_ bv4 32) c_create_data_~data~0.offset))) (and (forall ((v_ArrVal_352 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_353 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv8 32) (select (select (store |c_#memory_$Pointer$.offset| |c_create_data_#t~mem9.base| v_ArrVal_353) c_create_data_~data~0.base) .cse0) .cse1) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_create_data_#t~mem9.base| v_ArrVal_352) c_create_data_~data~0.base) .cse0)))) (forall ((v_ArrVal_353 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (select (select (store |c_#memory_$Pointer$.offset| |c_create_data_#t~mem9.base| v_ArrVal_353) c_create_data_~data~0.base) .cse0))) (bvule (bvadd (_ bv4 32) .cse2 .cse1) (bvadd (_ bv8 32) .cse2 .cse1)))))) is different from false [2022-11-25 22:27:09,836 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv4 32) c_create_data_~data~0.offset))) (let ((.cse2 (bvmul c_create_data_~counter~0 (_ bv4 32))) (.cse0 (select (select |c_#memory_$Pointer$.base| c_create_data_~data~0.base) .cse1))) (and (forall ((v_ArrVal_352 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_353 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| .cse0 v_ArrVal_353) c_create_data_~data~0.base) .cse1) (_ bv8 32) .cse2) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| .cse0 v_ArrVal_352) c_create_data_~data~0.base) .cse1)))) (forall ((v_ArrVal_353 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (select (select (store |c_#memory_$Pointer$.offset| .cse0 v_ArrVal_353) c_create_data_~data~0.base) .cse1))) (bvule (bvadd .cse3 (_ bv4 32) .cse2) (bvadd .cse3 (_ bv8 32) .cse2))))))) is different from false [2022-11-25 22:27:09,909 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse2 (bvadd (_ bv4 32) c_create_data_~data~0.offset))) (let ((.cse1 (select (select |c_#memory_$Pointer$.base| c_create_data_~data~0.base) .cse2))) (and (forall ((v_ArrVal_353 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.offset| .cse1 v_ArrVal_353) c_create_data_~data~0.base) .cse2))) (bvule (bvadd .cse0 (_ bv4 32)) (bvadd .cse0 (_ bv8 32))))) (forall ((v_ArrVal_352 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_353 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| .cse1 v_ArrVal_353) c_create_data_~data~0.base) .cse2) (_ bv8 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| .cse1 v_ArrVal_352) c_create_data_~data~0.base) .cse2))))))) is different from false [2022-11-25 22:27:09,935 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-25 22:27:09,936 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 36 [2022-11-25 22:27:09,940 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 54 treesize of output 36 [2022-11-25 22:27:09,972 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-25 22:27:09,972 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 46 [2022-11-25 22:27:09,990 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-25 22:27:09,991 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 36 [2022-11-25 22:27:09,996 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 22:27:10,002 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 33 treesize of output 21 [2022-11-25 22:27:10,007 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 22:27:10,012 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 24 treesize of output 12 [2022-11-25 22:27:10,022 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 3 not checked. [2022-11-25 22:27:10,023 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [707790500] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 22:27:10,023 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1010502711] [2022-11-25 22:27:10,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:27:10,023 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 22:27:10,023 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 22:27:10,032 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 22:27:10,036 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-11-25 22:27:10,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:27:10,206 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-25 22:27:10,210 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:27:10,250 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-25 22:27:10,251 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 1 case distinctions, treesize of input 9 treesize of output 15 [2022-11-25 22:27:10,262 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 10 treesize of output 8 [2022-11-25 22:27:10,278 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-25 22:27:10,294 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 13 treesize of output 9 [2022-11-25 22:27:10,431 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-25 22:27:10,432 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 46 treesize of output 45 [2022-11-25 22:27:10,449 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 24 [2022-11-25 22:27:10,538 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 31 treesize of output 13 [2022-11-25 22:27:10,548 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 19 treesize of output 7 [2022-11-25 22:27:10,556 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 22:27:10,557 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 22:27:10,719 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse1 (bvmul c_create_data_~counter~0 (_ bv4 32))) (.cse2 (bvadd (_ bv4 32) c_create_data_~data~0.offset))) (and (forall ((v_ArrVal_398 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.offset| |c_create_data_#t~mem9.base| v_ArrVal_398) c_create_data_~data~0.base) .cse2))) (bvule (bvadd (_ bv4 32) .cse0 .cse1) (bvadd (_ bv8 32) .cse0 .cse1)))) (forall ((v_ArrVal_398 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_397 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv8 32) (select (select (store |c_#memory_$Pointer$.offset| |c_create_data_#t~mem9.base| v_ArrVal_398) c_create_data_~data~0.base) .cse2) .cse1) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_create_data_#t~mem9.base| v_ArrVal_397) c_create_data_~data~0.base) .cse2)))))) is different from false [2022-11-25 22:27:10,773 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse3 (bvadd (_ bv4 32) c_create_data_~data~0.offset))) (let ((.cse0 (bvmul c_create_data_~counter~0 (_ bv4 32))) (.cse2 (select (select |c_#memory_$Pointer$.base| c_create_data_~data~0.base) .cse3))) (and (forall ((v_ArrVal_398 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (select (select (store |c_#memory_$Pointer$.offset| .cse2 v_ArrVal_398) c_create_data_~data~0.base) .cse3))) (bvule (bvadd (_ bv4 32) .cse0 .cse1) (bvadd (_ bv8 32) .cse0 .cse1)))) (forall ((v_ArrVal_398 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_397 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv8 32) .cse0 (select (select (store |c_#memory_$Pointer$.offset| .cse2 v_ArrVal_398) c_create_data_~data~0.base) .cse3)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| .cse2 v_ArrVal_397) c_create_data_~data~0.base) .cse3))))))) is different from false [2022-11-25 22:27:10,846 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv4 32) c_create_data_~data~0.offset))) (let ((.cse0 (select (select |c_#memory_$Pointer$.base| c_create_data_~data~0.base) .cse1))) (and (forall ((v_ArrVal_398 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_397 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv8 32) (select (select (store |c_#memory_$Pointer$.offset| .cse0 v_ArrVal_398) c_create_data_~data~0.base) .cse1)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| .cse0 v_ArrVal_397) c_create_data_~data~0.base) .cse1)))) (forall ((v_ArrVal_398 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (select (select (store |c_#memory_$Pointer$.offset| .cse0 v_ArrVal_398) c_create_data_~data~0.base) .cse1))) (bvule (bvadd (_ bv4 32) .cse2) (bvadd (_ bv8 32) .cse2))))))) is different from false [2022-11-25 22:27:10,867 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-25 22:27:10,867 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 46 [2022-11-25 22:27:10,880 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-25 22:27:10,880 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 36 [2022-11-25 22:27:10,887 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 62 treesize of output 50 [2022-11-25 22:27:10,892 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 96 treesize of output 78 [2022-11-25 22:27:10,904 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 40 treesize of output 32 [2022-11-25 22:27:10,908 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 66 treesize of output 58 [2022-11-25 22:27:11,044 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-25 22:27:11,045 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 36 [2022-11-25 22:27:11,055 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 54 treesize of output 36 [2022-11-25 22:27:11,191 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 3 not checked. [2022-11-25 22:27:11,191 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1010502711] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 22:27:11,191 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-25 22:27:11,191 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 7, 8, 7, 8] total 20 [2022-11-25 22:27:11,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458743243] [2022-11-25 22:27:11,192 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-25 22:27:11,192 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-25 22:27:11,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-25 22:27:11,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-25 22:27:11,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=108, Unknown=9, NotChecked=252, Total=420 [2022-11-25 22:27:11,193 INFO L87 Difference]: Start difference. First operand 224 states and 263 transitions. Second operand has 21 states, 20 states have (on average 2.1) internal successors, (42), 21 states have internal predecessors, (42), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 22:27:15,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:27:15,423 INFO L93 Difference]: Finished difference Result 236 states and 275 transitions. [2022-11-25 22:27:15,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-25 22:27:15,424 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 2.1) internal successors, (42), 21 states have internal predecessors, (42), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2022-11-25 22:27:15,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:27:15,426 INFO L225 Difference]: With dead ends: 236 [2022-11-25 22:27:15,426 INFO L226 Difference]: Without dead ends: 236 [2022-11-25 22:27:15,426 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 107 SyntacticMatches, 2 SemanticMatches, 22 ConstructedPredicates, 9 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=72, Invalid=165, Unknown=9, NotChecked=306, Total=552 [2022-11-25 22:27:15,427 INFO L413 NwaCegarLoop]: 162 mSDtfsCounter, 5 mSDsluCounter, 1337 mSDsCounter, 0 mSdLazyCounter, 590 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 1499 SdHoareTripleChecker+Invalid, 1392 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 590 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 798 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-11-25 22:27:15,427 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 1499 Invalid, 1392 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 590 Invalid, 1 Unknown, 798 Unchecked, 3.3s Time] [2022-11-25 22:27:15,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2022-11-25 22:27:15,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 234. [2022-11-25 22:27:15,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 234 states, 170 states have (on average 1.5823529411764705) internal successors, (269), 229 states have internal predecessors, (269), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-25 22:27:15,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 273 transitions. [2022-11-25 22:27:15,439 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 273 transitions. Word has length 22 [2022-11-25 22:27:15,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:27:15,440 INFO L495 AbstractCegarLoop]: Abstraction has 234 states and 273 transitions. [2022-11-25 22:27:15,441 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 2.1) internal successors, (42), 21 states have internal predecessors, (42), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 22:27:15,442 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 273 transitions. [2022-11-25 22:27:15,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-11-25 22:27:15,444 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:27:15,444 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 22:27:15,453 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (17)] Forceful destruction successful, exit code 0 [2022-11-25 22:27:15,656 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/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 [2022-11-25 22:27:15,853 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-11-25 22:27:16,048 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/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_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 22:27:16,048 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting create_dataErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_dataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-11-25 22:27:16,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:27:16,049 INFO L85 PathProgramCache]: Analyzing trace with hash 767728924, now seen corresponding path program 2 times [2022-11-25 22:27:16,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-25 22:27:16,049 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1682605813] [2022-11-25 22:27:16,050 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-25 22:27:16,050 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 [2022-11-25 22:27:16,050 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/mathsat [2022-11-25 22:27:16,051 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/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) [2022-11-25 22:27:16,071 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/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 [2022-11-25 22:27:16,298 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-25 22:27:16,298 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 22:27:16,310 INFO L263 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-25 22:27:16,314 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:27:16,360 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-25 22:27:16,361 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 1 case distinctions, treesize of input 9 treesize of output 15 [2022-11-25 22:27:16,370 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 10 treesize of output 8 [2022-11-25 22:27:16,407 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-25 22:27:16,422 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 13 treesize of output 9 [2022-11-25 22:27:16,619 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-25 22:27:16,620 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 46 treesize of output 45 [2022-11-25 22:27:16,628 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 24 [2022-11-25 22:27:16,835 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-25 22:27:16,835 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 46 treesize of output 45 [2022-11-25 22:27:16,847 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 24 [2022-11-25 22:27:16,995 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 31 treesize of output 13 [2022-11-25 22:27:17,002 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 19 treesize of output 7 [2022-11-25 22:27:17,041 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 22:27:17,041 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 22:27:17,507 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse1 (bvmul c_create_data_~counter~0 (_ bv4 32))) (.cse2 (bvadd (_ bv4 32) c_create_data_~data~0.offset))) (and (forall ((v_ArrVal_460 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.offset| |c_create_data_#t~mem9.base| v_ArrVal_460) c_create_data_~data~0.base) .cse2))) (bvule (bvadd (_ bv4 32) .cse0 .cse1) (bvadd (_ bv8 32) .cse0 .cse1)))) (forall ((v_ArrVal_460 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_461 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv8 32) (select (select (store |c_#memory_$Pointer$.offset| |c_create_data_#t~mem9.base| v_ArrVal_460) c_create_data_~data~0.base) .cse2) .cse1) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_create_data_#t~mem9.base| v_ArrVal_461) c_create_data_~data~0.base) .cse2)))))) is different from false [2022-11-25 22:27:17,565 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv4 32) c_create_data_~data~0.offset))) (let ((.cse2 (bvmul c_create_data_~counter~0 (_ bv4 32))) (.cse0 (select (select |c_#memory_$Pointer$.base| c_create_data_~data~0.base) .cse1))) (and (forall ((v_ArrVal_460 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_461 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv8 32) (select (select (store |c_#memory_$Pointer$.offset| .cse0 v_ArrVal_460) c_create_data_~data~0.base) .cse1) .cse2) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| .cse0 v_ArrVal_461) c_create_data_~data~0.base) .cse1)))) (forall ((v_ArrVal_460 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (select (select (store |c_#memory_$Pointer$.offset| .cse0 v_ArrVal_460) c_create_data_~data~0.base) .cse1))) (bvule (bvadd (_ bv4 32) .cse3 .cse2) (bvadd (_ bv8 32) .cse3 .cse2))))))) is different from false [2022-11-25 22:27:17,672 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse3 (bvadd (_ bv4 32) c_create_data_~data~0.offset))) (let ((.cse1 (bvmul c_create_data_~counter~0 (_ bv4 32))) (.cse2 (select (select |c_#memory_$Pointer$.base| c_create_data_~data~0.base) .cse3))) (and (forall ((v_ArrVal_460 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.offset| .cse2 v_ArrVal_460) c_create_data_~data~0.base) .cse3))) (bvule (bvadd (_ bv8 32) .cse0 .cse1) (bvadd .cse0 .cse1 (_ bv12 32))))) (forall ((v_ArrVal_460 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_461 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| .cse2 v_ArrVal_460) c_create_data_~data~0.base) .cse3) .cse1 (_ bv12 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| .cse2 v_ArrVal_461) c_create_data_~data~0.base) .cse3))))))) is different from false [2022-11-25 22:27:17,771 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse1 (bvmul c_create_data_~counter~0 (_ bv4 32))) (.cse2 (bvadd (_ bv4 32) c_create_data_~data~0.offset))) (and (forall ((v_ArrVal_460 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_458 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_459 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store (store |c_#memory_$Pointer$.offset| |c_create_data_#t~mem9.base| v_ArrVal_458) (select (select (store |c_#memory_$Pointer$.base| |c_create_data_#t~mem9.base| v_ArrVal_459) c_create_data_~data~0.base) .cse2) v_ArrVal_460) c_create_data_~data~0.base) .cse2))) (bvule (bvadd (_ bv8 32) .cse0 .cse1) (bvadd .cse0 .cse1 (_ bv12 32))))) (forall ((v_ArrVal_460 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_461 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_458 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_459 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse4 (store |c_#memory_$Pointer$.base| |c_create_data_#t~mem9.base| v_ArrVal_459))) (let ((.cse3 (select (select .cse4 c_create_data_~data~0.base) .cse2))) (bvule (bvadd (select (select (store (store |c_#memory_$Pointer$.offset| |c_create_data_#t~mem9.base| v_ArrVal_458) .cse3 v_ArrVal_460) c_create_data_~data~0.base) .cse2) .cse1 (_ bv12 32)) (select |c_#length| (select (select (store .cse4 .cse3 v_ArrVal_461) c_create_data_~data~0.base) .cse2)))))))) is different from false [2022-11-25 22:27:17,842 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse2 (bvadd (_ bv4 32) c_create_data_~data~0.offset))) (let ((.cse3 (bvmul c_create_data_~counter~0 (_ bv4 32))) (.cse0 (select (select |c_#memory_$Pointer$.base| c_create_data_~data~0.base) .cse2))) (and (forall ((v_ArrVal_460 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_461 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_458 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_459 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse4 (store |c_#memory_$Pointer$.base| .cse0 v_ArrVal_459))) (let ((.cse1 (select (select .cse4 c_create_data_~data~0.base) .cse2))) (bvule (bvadd (select (select (store (store |c_#memory_$Pointer$.offset| .cse0 v_ArrVal_458) .cse1 v_ArrVal_460) c_create_data_~data~0.base) .cse2) .cse3 (_ bv12 32)) (select |c_#length| (select (select (store .cse4 .cse1 v_ArrVal_461) c_create_data_~data~0.base) .cse2)))))) (forall ((v_ArrVal_460 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_458 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_459 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse5 (select (select (store (store |c_#memory_$Pointer$.offset| .cse0 v_ArrVal_458) (select (select (store |c_#memory_$Pointer$.base| .cse0 v_ArrVal_459) c_create_data_~data~0.base) .cse2) v_ArrVal_460) c_create_data_~data~0.base) .cse2))) (bvule (bvadd .cse5 (_ bv8 32) .cse3) (bvadd .cse5 .cse3 (_ bv12 32)))))))) is different from false [2022-11-25 22:27:17,978 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse2 (bvadd (_ bv4 32) c_create_data_~data~0.offset))) (let ((.cse0 (select (select |c_#memory_$Pointer$.base| c_create_data_~data~0.base) .cse2))) (and (forall ((v_ArrVal_460 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_461 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_458 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_459 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (store |c_#memory_$Pointer$.base| .cse0 v_ArrVal_459))) (let ((.cse1 (select (select .cse3 c_create_data_~data~0.base) .cse2))) (bvule (bvadd (select (select (store (store |c_#memory_$Pointer$.offset| .cse0 v_ArrVal_458) .cse1 v_ArrVal_460) c_create_data_~data~0.base) .cse2) (_ bv12 32)) (select |c_#length| (select (select (store .cse3 .cse1 v_ArrVal_461) c_create_data_~data~0.base) .cse2)))))) (forall ((v_ArrVal_460 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_458 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_459 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse4 (select (select (store (store |c_#memory_$Pointer$.offset| .cse0 v_ArrVal_458) (select (select (store |c_#memory_$Pointer$.base| .cse0 v_ArrVal_459) c_create_data_~data~0.base) .cse2) v_ArrVal_460) c_create_data_~data~0.base) .cse2))) (bvule (bvadd .cse4 (_ bv8 32)) (bvadd .cse4 (_ bv12 32)))))))) is different from false [2022-11-25 22:27:18,006 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-25 22:27:18,006 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 89 treesize of output 90 [2022-11-25 22:27:18,022 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-25 22:27:18,022 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 79 treesize of output 60 [2022-11-25 22:27:18,032 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 400 treesize of output 334 [2022-11-25 22:27:18,043 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 688 treesize of output 634 [2022-11-25 22:27:18,063 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 630 treesize of output 582 [2022-11-25 22:27:18,073 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 582 treesize of output 534 [2022-11-25 22:27:18,082 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 534 treesize of output 430 [2022-11-25 22:27:18,090 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 430 treesize of output 414 [2022-11-25 22:27:20,151 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-25 22:27:20,152 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 89 treesize of output 80 [2022-11-25 22:27:20,169 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-25 22:27:20,169 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 69 treesize of output 60 [2022-11-25 22:27:20,181 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 102 treesize of output 84 [2022-11-25 22:27:20,192 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 286 treesize of output 244 [2022-11-25 22:27:20,212 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 202 treesize of output 186 [2022-11-25 22:27:20,221 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 224 treesize of output 184 [2022-11-25 22:27:20,238 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 154 treesize of output 130 [2022-11-25 22:27:20,418 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 11 not checked. [2022-11-25 22:27:20,418 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-25 22:27:20,419 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1682605813] [2022-11-25 22:27:20,419 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1682605813] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 22:27:20,419 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1381798752] [2022-11-25 22:27:20,419 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-25 22:27:20,419 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-25 22:27:20,419 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/cvc4 [2022-11-25 22:27:20,424 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-25 22:27:20,454 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (20)] Waiting until timeout for monitored process [2022-11-25 22:27:20,918 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-25 22:27:20,918 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 22:27:20,925 INFO L263 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-25 22:27:20,929 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:27:20,939 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 10 treesize of output 8 [2022-11-25 22:27:20,950 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2022-11-25 22:27:20,962 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 13 treesize of output 9 [2022-11-25 22:27:20,976 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-25 22:27:21,082 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-25 22:27:21,082 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 46 treesize of output 45 [2022-11-25 22:27:21,096 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 24 [2022-11-25 22:27:21,220 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-25 22:27:21,220 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 46 treesize of output 45 [2022-11-25 22:27:21,233 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 24 [2022-11-25 22:27:21,317 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 31 treesize of output 13 [2022-11-25 22:27:21,324 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 19 treesize of output 7 [2022-11-25 22:27:21,331 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 22:27:21,332 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 22:27:21,472 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse1 (bvmul c_create_data_~counter~0 (_ bv4 32))) (.cse2 (bvadd (_ bv4 32) c_create_data_~data~0.offset))) (and (forall ((v_ArrVal_522 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.offset| |c_create_data_#t~mem9.base| v_ArrVal_522) c_create_data_~data~0.base) .cse2))) (bvule (bvadd (_ bv4 32) .cse0 .cse1) (bvadd (_ bv8 32) .cse0 .cse1)))) (forall ((v_ArrVal_522 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_523 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv8 32) (select (select (store |c_#memory_$Pointer$.offset| |c_create_data_#t~mem9.base| v_ArrVal_522) c_create_data_~data~0.base) .cse2) .cse1) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_create_data_#t~mem9.base| v_ArrVal_523) c_create_data_~data~0.base) .cse2)))))) is different from false [2022-11-25 22:27:21,531 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv4 32) c_create_data_~data~0.offset))) (let ((.cse2 (bvmul c_create_data_~counter~0 (_ bv4 32))) (.cse0 (select (select |c_#memory_$Pointer$.base| c_create_data_~data~0.base) .cse1))) (and (forall ((v_ArrVal_522 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_523 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv8 32) (select (select (store |c_#memory_$Pointer$.offset| .cse0 v_ArrVal_522) c_create_data_~data~0.base) .cse1) .cse2) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| .cse0 v_ArrVal_523) c_create_data_~data~0.base) .cse1)))) (forall ((v_ArrVal_522 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (select (select (store |c_#memory_$Pointer$.offset| .cse0 v_ArrVal_522) c_create_data_~data~0.base) .cse1))) (bvule (bvadd (_ bv4 32) .cse3 .cse2) (bvadd (_ bv8 32) .cse3 .cse2))))))) is different from false [2022-11-25 22:27:21,609 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse3 (bvadd (_ bv4 32) c_create_data_~data~0.offset))) (let ((.cse1 (bvmul c_create_data_~counter~0 (_ bv4 32))) (.cse2 (select (select |c_#memory_$Pointer$.base| c_create_data_~data~0.base) .cse3))) (and (forall ((v_ArrVal_522 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.offset| .cse2 v_ArrVal_522) c_create_data_~data~0.base) .cse3))) (bvule (bvadd (_ bv8 32) .cse0 .cse1) (bvadd .cse0 .cse1 (_ bv12 32))))) (forall ((v_ArrVal_522 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_523 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| .cse2 v_ArrVal_522) c_create_data_~data~0.base) .cse3) .cse1 (_ bv12 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| .cse2 v_ArrVal_523) c_create_data_~data~0.base) .cse3))))))) is different from false [2022-11-25 22:27:22,081 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse1 (bvmul c_create_data_~counter~0 (_ bv4 32))) (.cse2 (bvadd (_ bv4 32) c_create_data_~data~0.offset))) (and (forall ((v_ArrVal_520 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_521 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_522 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store (store |c_#memory_$Pointer$.offset| |c_create_data_#t~mem9.base| v_ArrVal_521) (select (select (store |c_#memory_$Pointer$.base| |c_create_data_#t~mem9.base| v_ArrVal_520) c_create_data_~data~0.base) .cse2) v_ArrVal_522) c_create_data_~data~0.base) .cse2))) (bvule (bvadd .cse0 (_ bv8 32) .cse1) (bvadd .cse0 .cse1 (_ bv12 32))))) (forall ((v_ArrVal_520 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_521 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_522 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_523 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse4 (store |c_#memory_$Pointer$.base| |c_create_data_#t~mem9.base| v_ArrVal_520))) (let ((.cse3 (select (select .cse4 c_create_data_~data~0.base) .cse2))) (bvule (bvadd (select (select (store (store |c_#memory_$Pointer$.offset| |c_create_data_#t~mem9.base| v_ArrVal_521) .cse3 v_ArrVal_522) c_create_data_~data~0.base) .cse2) .cse1 (_ bv12 32)) (select |c_#length| (select (select (store .cse4 .cse3 v_ArrVal_523) c_create_data_~data~0.base) .cse2)))))))) is different from false [2022-11-25 22:27:22,369 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse2 (bvadd (_ bv4 32) c_create_data_~data~0.offset))) (let ((.cse3 (bvmul c_create_data_~counter~0 (_ bv4 32))) (.cse0 (select (select |c_#memory_$Pointer$.base| c_create_data_~data~0.base) .cse2))) (and (forall ((v_ArrVal_520 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_521 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_522 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_523 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse4 (store |c_#memory_$Pointer$.base| .cse0 v_ArrVal_520))) (let ((.cse1 (select (select .cse4 c_create_data_~data~0.base) .cse2))) (bvule (bvadd (select (select (store (store |c_#memory_$Pointer$.offset| .cse0 v_ArrVal_521) .cse1 v_ArrVal_522) c_create_data_~data~0.base) .cse2) .cse3 (_ bv12 32)) (select |c_#length| (select (select (store .cse4 .cse1 v_ArrVal_523) c_create_data_~data~0.base) .cse2)))))) (forall ((v_ArrVal_520 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_521 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_522 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse5 (select (select (store (store |c_#memory_$Pointer$.offset| .cse0 v_ArrVal_521) (select (select (store |c_#memory_$Pointer$.base| .cse0 v_ArrVal_520) c_create_data_~data~0.base) .cse2) v_ArrVal_522) c_create_data_~data~0.base) .cse2))) (bvule (bvadd (_ bv8 32) .cse5 .cse3) (bvadd .cse5 .cse3 (_ bv12 32)))))))) is different from false [2022-11-25 22:27:22,458 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse2 (bvadd (_ bv4 32) c_create_data_~data~0.offset))) (let ((.cse1 (select (select |c_#memory_$Pointer$.base| c_create_data_~data~0.base) .cse2))) (and (forall ((v_ArrVal_520 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_521 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_522 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store (store |c_#memory_$Pointer$.offset| .cse1 v_ArrVal_521) (select (select (store |c_#memory_$Pointer$.base| .cse1 v_ArrVal_520) c_create_data_~data~0.base) .cse2) v_ArrVal_522) c_create_data_~data~0.base) .cse2))) (bvule (bvadd (_ bv8 32) .cse0) (bvadd .cse0 (_ bv12 32))))) (forall ((v_ArrVal_520 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_521 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_522 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_523 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse4 (store |c_#memory_$Pointer$.base| .cse1 v_ArrVal_520))) (let ((.cse3 (select (select .cse4 c_create_data_~data~0.base) .cse2))) (bvule (bvadd (select (select (store (store |c_#memory_$Pointer$.offset| .cse1 v_ArrVal_521) .cse3 v_ArrVal_522) c_create_data_~data~0.base) .cse2) (_ bv12 32)) (select |c_#length| (select (select (store .cse4 .cse3 v_ArrVal_523) c_create_data_~data~0.base) .cse2))))))))) is different from false [2022-11-25 22:27:22,487 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-25 22:27:22,488 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 89 treesize of output 90 [2022-11-25 22:27:22,505 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-25 22:27:22,505 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 79 treesize of output 60 [2022-11-25 22:27:22,514 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 400 treesize of output 334 [2022-11-25 22:27:22,524 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 688 treesize of output 634 [2022-11-25 22:27:22,537 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 630 treesize of output 582 [2022-11-25 22:27:22,545 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 582 treesize of output 478 [2022-11-25 22:27:22,553 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 478 treesize of output 430 [2022-11-25 22:27:22,561 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 430 treesize of output 414 [2022-11-25 22:27:25,176 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-25 22:27:25,176 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 89 treesize of output 80 [2022-11-25 22:27:25,193 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-25 22:27:25,193 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 69 treesize of output 60 [2022-11-25 22:27:25,205 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 102 treesize of output 84 [2022-11-25 22:27:25,216 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 286 treesize of output 244 [2022-11-25 22:27:25,245 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 202 treesize of output 186 [2022-11-25 22:27:25,262 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 186 treesize of output 162 [2022-11-25 22:27:25,271 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 200 treesize of output 160 [2022-11-25 22:27:25,630 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 11 not checked. [2022-11-25 22:27:25,631 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1381798752] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 22:27:25,631 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1064470914] [2022-11-25 22:27:25,631 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-25 22:27:25,631 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 22:27:25,631 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 22:27:25,636 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 22:27:25,659 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-11-25 22:27:25,843 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-25 22:27:25,843 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 22:27:25,848 INFO L263 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-25 22:27:25,851 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:27:25,858 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 10 treesize of output 8 [2022-11-25 22:27:25,867 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2022-11-25 22:27:25,880 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 13 treesize of output 9 [2022-11-25 22:27:25,891 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-25 22:27:25,990 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-25 22:27:25,990 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 46 treesize of output 45 [2022-11-25 22:27:25,998 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 24 [2022-11-25 22:27:26,123 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-25 22:27:26,124 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 46 treesize of output 45 [2022-11-25 22:27:26,131 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 24 [2022-11-25 22:27:26,213 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 31 treesize of output 13 [2022-11-25 22:27:26,219 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 19 treesize of output 7 [2022-11-25 22:27:26,226 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 22:27:26,226 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 22:27:26,373 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse1 (bvmul c_create_data_~counter~0 (_ bv4 32))) (.cse2 (bvadd (_ bv4 32) c_create_data_~data~0.offset))) (and (forall ((v_ArrVal_585 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.offset| |c_create_data_#t~mem9.base| v_ArrVal_585) c_create_data_~data~0.base) .cse2))) (bvule (bvadd (_ bv4 32) .cse0 .cse1) (bvadd (_ bv8 32) .cse0 .cse1)))) (forall ((v_ArrVal_585 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_584 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv8 32) (select (select (store |c_#memory_$Pointer$.offset| |c_create_data_#t~mem9.base| v_ArrVal_585) c_create_data_~data~0.base) .cse2) .cse1) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_create_data_#t~mem9.base| v_ArrVal_584) c_create_data_~data~0.base) .cse2)))))) is different from false [2022-11-25 22:27:26,427 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv4 32) c_create_data_~data~0.offset))) (let ((.cse2 (bvmul c_create_data_~counter~0 (_ bv4 32))) (.cse0 (select (select |c_#memory_$Pointer$.base| c_create_data_~data~0.base) .cse1))) (and (forall ((v_ArrVal_585 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_584 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv8 32) (select (select (store |c_#memory_$Pointer$.offset| .cse0 v_ArrVal_585) c_create_data_~data~0.base) .cse1) .cse2) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| .cse0 v_ArrVal_584) c_create_data_~data~0.base) .cse1)))) (forall ((v_ArrVal_585 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (select (select (store |c_#memory_$Pointer$.offset| .cse0 v_ArrVal_585) c_create_data_~data~0.base) .cse1))) (bvule (bvadd (_ bv4 32) .cse3 .cse2) (bvadd (_ bv8 32) .cse3 .cse2))))))) is different from false [2022-11-25 22:27:26,502 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse3 (bvadd (_ bv4 32) c_create_data_~data~0.offset))) (let ((.cse1 (bvmul c_create_data_~counter~0 (_ bv4 32))) (.cse2 (select (select |c_#memory_$Pointer$.base| c_create_data_~data~0.base) .cse3))) (and (forall ((v_ArrVal_585 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.offset| .cse2 v_ArrVal_585) c_create_data_~data~0.base) .cse3))) (bvule (bvadd (_ bv8 32) .cse0 .cse1) (bvadd .cse0 .cse1 (_ bv12 32))))) (forall ((v_ArrVal_585 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_584 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| .cse2 v_ArrVal_585) c_create_data_~data~0.base) .cse3) .cse1 (_ bv12 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| .cse2 v_ArrVal_584) c_create_data_~data~0.base) .cse3))))))) is different from false [2022-11-25 22:27:26,766 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse2 (bvmul c_create_data_~counter~0 (_ bv4 32))) (.cse1 (bvadd (_ bv4 32) c_create_data_~data~0.offset))) (and (forall ((v_ArrVal_585 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_582 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_583 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_584 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (store |c_#memory_$Pointer$.base| |c_create_data_#t~mem9.base| v_ArrVal_583))) (let ((.cse0 (select (select .cse3 c_create_data_~data~0.base) .cse1))) (bvule (bvadd (select (select (store (store |c_#memory_$Pointer$.offset| |c_create_data_#t~mem9.base| v_ArrVal_582) .cse0 v_ArrVal_585) c_create_data_~data~0.base) .cse1) .cse2 (_ bv12 32)) (select |c_#length| (select (select (store .cse3 .cse0 v_ArrVal_584) c_create_data_~data~0.base) .cse1)))))) (forall ((v_ArrVal_585 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_582 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_583 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse4 (select (select (store (store |c_#memory_$Pointer$.offset| |c_create_data_#t~mem9.base| v_ArrVal_582) (select (select (store |c_#memory_$Pointer$.base| |c_create_data_#t~mem9.base| v_ArrVal_583) c_create_data_~data~0.base) .cse1) v_ArrVal_585) c_create_data_~data~0.base) .cse1))) (bvule (bvadd (_ bv8 32) .cse4 .cse2) (bvadd .cse4 .cse2 (_ bv12 32))))))) is different from false [2022-11-25 22:27:26,979 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse3 (bvadd (_ bv4 32) c_create_data_~data~0.offset))) (let ((.cse1 (bvmul c_create_data_~counter~0 (_ bv4 32))) (.cse2 (select (select |c_#memory_$Pointer$.base| c_create_data_~data~0.base) .cse3))) (and (forall ((v_ArrVal_585 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_582 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_583 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store (store |c_#memory_$Pointer$.offset| .cse2 v_ArrVal_582) (select (select (store |c_#memory_$Pointer$.base| .cse2 v_ArrVal_583) c_create_data_~data~0.base) .cse3) v_ArrVal_585) c_create_data_~data~0.base) .cse3))) (bvule (bvadd (_ bv8 32) .cse0 .cse1) (bvadd .cse0 .cse1 (_ bv12 32))))) (forall ((v_ArrVal_585 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_582 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_583 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_584 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse5 (store |c_#memory_$Pointer$.base| .cse2 v_ArrVal_583))) (let ((.cse4 (select (select .cse5 c_create_data_~data~0.base) .cse3))) (bvule (bvadd (select (select (store (store |c_#memory_$Pointer$.offset| .cse2 v_ArrVal_582) .cse4 v_ArrVal_585) c_create_data_~data~0.base) .cse3) .cse1 (_ bv12 32)) (select |c_#length| (select (select (store .cse5 .cse4 v_ArrVal_584) c_create_data_~data~0.base) .cse3))))))))) is different from false [2022-11-25 22:27:27,059 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse2 (bvadd (_ bv4 32) c_create_data_~data~0.offset))) (let ((.cse0 (select (select |c_#memory_$Pointer$.base| c_create_data_~data~0.base) .cse2))) (and (forall ((v_ArrVal_585 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_582 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_583 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_584 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (store |c_#memory_$Pointer$.base| .cse0 v_ArrVal_583))) (let ((.cse1 (select (select .cse3 c_create_data_~data~0.base) .cse2))) (bvule (bvadd (select (select (store (store |c_#memory_$Pointer$.offset| .cse0 v_ArrVal_582) .cse1 v_ArrVal_585) c_create_data_~data~0.base) .cse2) (_ bv12 32)) (select |c_#length| (select (select (store .cse3 .cse1 v_ArrVal_584) c_create_data_~data~0.base) .cse2)))))) (forall ((v_ArrVal_585 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_582 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_583 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse4 (select (select (store (store |c_#memory_$Pointer$.offset| .cse0 v_ArrVal_582) (select (select (store |c_#memory_$Pointer$.base| .cse0 v_ArrVal_583) c_create_data_~data~0.base) .cse2) v_ArrVal_585) c_create_data_~data~0.base) .cse2))) (bvule (bvadd (_ bv8 32) .cse4) (bvadd .cse4 (_ bv12 32)))))))) is different from false [2022-11-25 22:27:27,090 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-25 22:27:27,090 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 89 treesize of output 80 [2022-11-25 22:27:27,104 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-25 22:27:27,105 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 69 treesize of output 60 [2022-11-25 22:27:27,112 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 102 treesize of output 84 [2022-11-25 22:27:27,117 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 286 treesize of output 244 [2022-11-25 22:27:27,140 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 202 treesize of output 186 [2022-11-25 22:27:27,145 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 224 treesize of output 184 [2022-11-25 22:27:27,158 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 154 treesize of output 130 [2022-11-25 22:27:27,205 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-25 22:27:27,206 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 89 treesize of output 90 [2022-11-25 22:27:27,226 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-25 22:27:27,226 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 79 treesize of output 60 [2022-11-25 22:27:27,232 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 22:27:27,237 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 92 treesize of output 56 [2022-11-25 22:27:27,243 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 22:27:27,247 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 50 treesize of output 32 [2022-11-25 22:27:27,256 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 11 not checked. [2022-11-25 22:27:27,257 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1064470914] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 22:27:27,257 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-25 22:27:27,257 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11, 9, 11, 9, 11] total 31 [2022-11-25 22:27:27,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1895967645] [2022-11-25 22:27:27,257 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-25 22:27:27,258 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-11-25 22:27:27,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-25 22:27:27,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-11-25 22:27:27,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=156, Unknown=18, NotChecked=738, Total=992 [2022-11-25 22:27:27,259 INFO L87 Difference]: Start difference. First operand 234 states and 273 transitions. Second operand has 32 states, 31 states have (on average 2.0) internal successors, (62), 32 states have internal predecessors, (62), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 22:27:34,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:27:34,382 INFO L93 Difference]: Finished difference Result 246 states and 285 transitions. [2022-11-25 22:27:34,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-25 22:27:34,383 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 2.0) internal successors, (62), 32 states have internal predecessors, (62), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-11-25 22:27:34,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:27:34,384 INFO L225 Difference]: With dead ends: 246 [2022-11-25 22:27:34,385 INFO L226 Difference]: Without dead ends: 246 [2022-11-25 22:27:34,385 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 126 SyntacticMatches, 5 SemanticMatches, 34 ConstructedPredicates, 18 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=109, Invalid=251, Unknown=18, NotChecked=882, Total=1260 [2022-11-25 22:27:34,386 INFO L413 NwaCegarLoop]: 163 mSDtfsCounter, 8 mSDsluCounter, 2162 mSDsCounter, 0 mSdLazyCounter, 709 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 2325 SdHoareTripleChecker+Invalid, 2405 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 709 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1692 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2022-11-25 22:27:34,386 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 2325 Invalid, 2405 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 709 Invalid, 0 Unknown, 1692 Unchecked, 3.4s Time] [2022-11-25 22:27:34,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2022-11-25 22:27:34,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 244. [2022-11-25 22:27:34,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 244 states, 180 states have (on average 1.55) internal successors, (279), 239 states have internal predecessors, (279), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-25 22:27:34,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 283 transitions. [2022-11-25 22:27:34,393 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 283 transitions. Word has length 27 [2022-11-25 22:27:34,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:27:34,394 INFO L495 AbstractCegarLoop]: Abstraction has 244 states and 283 transitions. [2022-11-25 22:27:34,394 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 2.0) internal successors, (62), 32 states have internal predecessors, (62), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 22:27:34,394 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 283 transitions. [2022-11-25 22:27:34,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-11-25 22:27:34,395 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:27:34,395 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 22:27:34,404 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-11-25 22:27:34,611 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/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 [2022-11-25 22:27:34,806 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (20)] Forceful destruction successful, exit code 0 [2022-11-25 22:27:35,003 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/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_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt [2022-11-25 22:27:35,003 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting create_dataErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_dataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-11-25 22:27:35,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:27:35,004 INFO L85 PathProgramCache]: Analyzing trace with hash 852563911, now seen corresponding path program 3 times [2022-11-25 22:27:35,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-25 22:27:35,004 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1818404088] [2022-11-25 22:27:35,004 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-25 22:27:35,005 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 [2022-11-25 22:27:35,005 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/mathsat [2022-11-25 22:27:35,006 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/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) [2022-11-25 22:27:35,045 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/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 [2022-11-25 22:27:35,460 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-11-25 22:27:35,460 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 22:27:35,474 INFO L263 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-25 22:27:35,476 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:27:35,556 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 6 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 22:27:35,556 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 22:27:35,691 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 6 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 22:27:35,692 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-25 22:27:35,692 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1818404088] [2022-11-25 22:27:35,692 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1818404088] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 22:27:35,692 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [419004004] [2022-11-25 22:27:35,692 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-25 22:27:35,692 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-25 22:27:35,692 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/cvc4 [2022-11-25 22:27:35,693 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-25 22:27:35,695 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (23)] Waiting until timeout for monitored process [2022-11-25 22:27:36,236 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-11-25 22:27:36,237 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 22:27:36,242 INFO L263 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-25 22:27:36,244 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:27:36,304 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 6 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 22:27:36,304 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 22:27:36,373 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 6 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 22:27:36,373 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [419004004] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 22:27:36,373 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1729169257] [2022-11-25 22:27:36,373 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-25 22:27:36,374 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 22:27:36,374 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 22:27:36,376 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 22:27:36,398 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-11-25 22:27:37,034 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-11-25 22:27:37,034 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 22:27:37,039 INFO L263 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-25 22:27:37,049 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:27:37,088 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 6 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 22:27:37,088 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 22:27:37,144 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 6 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 22:27:37,144 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1729169257] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 22:27:37,145 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-25 22:27:37,145 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6, 6, 6, 6] total 10 [2022-11-25 22:27:37,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869939227] [2022-11-25 22:27:37,145 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-25 22:27:37,146 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-25 22:27:37,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-25 22:27:37,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-25 22:27:37,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2022-11-25 22:27:37,147 INFO L87 Difference]: Start difference. First operand 244 states and 283 transitions. Second operand has 10 states, 10 states have (on average 4.8) internal successors, (48), 10 states have internal predecessors, (48), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 22:27:37,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:27:37,334 INFO L93 Difference]: Finished difference Result 241 states and 277 transitions. [2022-11-25 22:27:37,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 22:27:37,334 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 10 states have internal predecessors, (48), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2022-11-25 22:27:37,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:27:37,336 INFO L225 Difference]: With dead ends: 241 [2022-11-25 22:27:37,336 INFO L226 Difference]: Without dead ends: 241 [2022-11-25 22:27:37,336 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 178 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2022-11-25 22:27:37,337 INFO L413 NwaCegarLoop]: 166 mSDtfsCounter, 141 mSDsluCounter, 733 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 141 SdHoareTripleChecker+Valid, 899 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-25 22:27:37,337 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [141 Valid, 899 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-25 22:27:37,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2022-11-25 22:27:37,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 239. [2022-11-25 22:27:37,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239 states, 176 states have (on average 1.5397727272727273) internal successors, (271), 234 states have internal predecessors, (271), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-25 22:27:37,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 275 transitions. [2022-11-25 22:27:37,344 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 275 transitions. Word has length 32 [2022-11-25 22:27:37,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:27:37,344 INFO L495 AbstractCegarLoop]: Abstraction has 239 states and 275 transitions. [2022-11-25 22:27:37,345 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 10 states have internal predecessors, (48), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 22:27:37,345 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 275 transitions. [2022-11-25 22:27:37,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-11-25 22:27:37,346 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:27:37,346 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 22:27:37,370 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/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 [2022-11-25 22:27:37,577 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2022-11-25 22:27:37,773 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (23)] Forceful destruction successful, exit code 0 [2022-11-25 22:27:37,970 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/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_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt [2022-11-25 22:27:37,970 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting create_dataErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_dataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-11-25 22:27:37,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:27:37,971 INFO L85 PathProgramCache]: Analyzing trace with hash -1939829061, now seen corresponding path program 1 times [2022-11-25 22:27:37,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-25 22:27:37,971 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [878346173] [2022-11-25 22:27:37,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:27:37,972 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 [2022-11-25 22:27:37,972 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/mathsat [2022-11-25 22:27:37,973 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/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) [2022-11-25 22:27:37,974 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/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 [2022-11-25 22:27:38,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:27:38,227 INFO L263 TraceCheckSpWp]: Trace formula consists of 278 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-25 22:27:38,229 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:27:38,238 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 [2022-11-25 22:27:38,247 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-25 22:27:38,247 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 22:27:38,247 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-25 22:27:38,247 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [878346173] [2022-11-25 22:27:38,248 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [878346173] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:27:38,248 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 22:27:38,248 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 22:27:38,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807332632] [2022-11-25 22:27:38,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:27:38,249 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 22:27:38,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-25 22:27:38,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 22:27:38,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 22:27:38,250 INFO L87 Difference]: Start difference. First operand 239 states and 275 transitions. Second operand has 3 states, 2 states have (on average 15.0) internal successors, (30), 3 states have internal predecessors, (30), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 22:27:38,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:27:38,596 INFO L93 Difference]: Finished difference Result 241 states and 269 transitions. [2022-11-25 22:27:38,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 22:27:38,597 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 15.0) internal successors, (30), 3 states have internal predecessors, (30), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2022-11-25 22:27:38,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:27:38,599 INFO L225 Difference]: With dead ends: 241 [2022-11-25 22:27:38,599 INFO L226 Difference]: Without dead ends: 241 [2022-11-25 22:27:38,599 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 22:27:38,600 INFO L413 NwaCegarLoop]: 152 mSDtfsCounter, 22 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 233 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-25 22:27:38,600 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 233 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-25 22:27:38,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2022-11-25 22:27:38,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 235. [2022-11-25 22:27:38,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 235 states, 176 states have (on average 1.4715909090909092) internal successors, (259), 230 states have internal predecessors, (259), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-25 22:27:38,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 263 transitions. [2022-11-25 22:27:38,608 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 263 transitions. Word has length 41 [2022-11-25 22:27:38,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:27:38,608 INFO L495 AbstractCegarLoop]: Abstraction has 235 states and 263 transitions. [2022-11-25 22:27:38,609 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 15.0) internal successors, (30), 3 states have internal predecessors, (30), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 22:27:38,609 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 263 transitions. [2022-11-25 22:27:38,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-11-25 22:27:38,610 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:27:38,610 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 22:27:38,625 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/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)] Forceful destruction successful, exit code 0 [2022-11-25 22:27:38,824 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/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 [2022-11-25 22:27:38,825 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting create_dataErr25REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_dataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-11-25 22:27:38,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:27:38,825 INFO L85 PathProgramCache]: Analyzing trace with hash -1939829060, now seen corresponding path program 1 times [2022-11-25 22:27:38,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-25 22:27:38,826 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [787067798] [2022-11-25 22:27:38,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:27:38,826 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 [2022-11-25 22:27:38,826 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/mathsat [2022-11-25 22:27:38,827 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/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) [2022-11-25 22:27:38,842 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/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)] Waiting until timeout for monitored process [2022-11-25 22:27:39,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:27:39,069 INFO L263 TraceCheckSpWp]: Trace formula consists of 278 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-25 22:27:39,070 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:27:39,077 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 [2022-11-25 22:27:39,090 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-25 22:27:39,090 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 22:27:39,091 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-25 22:27:39,091 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [787067798] [2022-11-25 22:27:39,091 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [787067798] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:27:39,091 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 22:27:39,091 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 22:27:39,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752117516] [2022-11-25 22:27:39,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:27:39,092 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 22:27:39,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-25 22:27:39,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 22:27:39,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 22:27:39,093 INFO L87 Difference]: Start difference. First operand 235 states and 263 transitions. Second operand has 3 states, 2 states have (on average 15.0) internal successors, (30), 3 states have internal predecessors, (30), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 22:27:39,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:27:39,524 INFO L93 Difference]: Finished difference Result 237 states and 257 transitions. [2022-11-25 22:27:39,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 22:27:39,525 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 15.0) internal successors, (30), 3 states have internal predecessors, (30), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2022-11-25 22:27:39,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:27:39,526 INFO L225 Difference]: With dead ends: 237 [2022-11-25 22:27:39,526 INFO L226 Difference]: Without dead ends: 237 [2022-11-25 22:27:39,526 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 22:27:39,527 INFO L413 NwaCegarLoop]: 149 mSDtfsCounter, 18 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 232 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-25 22:27:39,527 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 232 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-25 22:27:39,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2022-11-25 22:27:39,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 231. [2022-11-25 22:27:39,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 231 states, 176 states have (on average 1.4034090909090908) internal successors, (247), 226 states have internal predecessors, (247), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-25 22:27:39,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 251 transitions. [2022-11-25 22:27:39,536 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 251 transitions. Word has length 41 [2022-11-25 22:27:39,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:27:39,536 INFO L495 AbstractCegarLoop]: Abstraction has 231 states and 251 transitions. [2022-11-25 22:27:39,537 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 15.0) internal successors, (30), 3 states have internal predecessors, (30), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 22:27:39,537 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 251 transitions. [2022-11-25 22:27:39,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-11-25 22:27:39,538 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:27:39,538 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 22:27:39,553 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/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)] Ended with exit code 0 [2022-11-25 22:27:39,753 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/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 [2022-11-25 22:27:39,753 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_dataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-11-25 22:27:39,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:27:39,754 INFO L85 PathProgramCache]: Analyzing trace with hash -663465002, now seen corresponding path program 1 times [2022-11-25 22:27:39,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-25 22:27:39,754 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1592725536] [2022-11-25 22:27:39,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:27:39,755 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 [2022-11-25 22:27:39,755 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/mathsat [2022-11-25 22:27:39,757 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/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) [2022-11-25 22:27:39,758 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/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 (27)] Waiting until timeout for monitored process [2022-11-25 22:27:40,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:27:40,126 INFO L263 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-25 22:27:40,129 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:27:40,133 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 [2022-11-25 22:27:40,217 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 13 treesize of output 9 [2022-11-25 22:27:40,279 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 9 [2022-11-25 22:27:40,613 INFO L321 Elim1Store]: treesize reduction 52, result has 30.7 percent of original size [2022-11-25 22:27:40,613 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 4 case distinctions, treesize of input 22 treesize of output 38 [2022-11-25 22:27:40,633 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-25 22:27:40,633 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 22:27:42,753 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-25 22:27:42,754 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1592725536] [2022-11-25 22:27:42,754 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1592725536] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 22:27:42,754 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [430999553] [2022-11-25 22:27:42,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:27:42,754 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-25 22:27:42,754 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/cvc4 [2022-11-25 22:27:42,755 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-25 22:27:42,771 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (28)] Waiting until timeout for monitored process [2022-11-25 22:27:43,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:27:43,303 INFO L263 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-25 22:27:43,305 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:27:43,311 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 [2022-11-25 22:27:43,349 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_1213 (_ BitVec 1))) (= (store (store |c_old(#valid)| c_create_data_~data~0.base v_ArrVal_1213) |c_create_data_#t~malloc7.base| (_ bv1 1)) |c_#valid|)) is different from true [2022-11-25 22:27:47,701 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 22:27:47,737 INFO L321 Elim1Store]: treesize reduction 34, result has 35.8 percent of original size [2022-11-25 22:27:47,737 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 2 case distinctions, treesize of input 17 treesize of output 31 [2022-11-25 22:27:47,752 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-25 22:27:47,752 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 22:27:47,753 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [430999553] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:27:47,753 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 22:27:47,753 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 9 [2022-11-25 22:27:47,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743376789] [2022-11-25 22:27:47,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:27:47,754 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 22:27:47,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-25 22:27:47,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 22:27:47,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=4, NotChecked=16, Total=110 [2022-11-25 22:27:47,755 INFO L87 Difference]: Start difference. First operand 231 states and 251 transitions. Second operand has 7 states, 6 states have (on average 5.333333333333333) internal successors, (32), 7 states have internal predecessors, (32), 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) [2022-11-25 22:27:53,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:27:53,269 INFO L93 Difference]: Finished difference Result 268 states and 289 transitions. [2022-11-25 22:27:53,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 22:27:53,270 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 5.333333333333333) internal successors, (32), 7 states have internal predecessors, (32), 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 44 [2022-11-25 22:27:53,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:27:53,271 INFO L225 Difference]: With dead ends: 268 [2022-11-25 22:27:53,271 INFO L226 Difference]: Without dead ends: 268 [2022-11-25 22:27:53,272 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 77 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 10.3s TimeCoverageRelationStatistics Valid=34, Invalid=96, Unknown=6, NotChecked=20, Total=156 [2022-11-25 22:27:53,272 INFO L413 NwaCegarLoop]: 106 mSDtfsCounter, 100 mSDsluCounter, 246 mSDsCounter, 0 mSdLazyCounter, 309 mSolverCounterSat, 9 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 352 SdHoareTripleChecker+Invalid, 486 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 309 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 163 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-11-25 22:27:53,273 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 352 Invalid, 486 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 309 Invalid, 5 Unknown, 163 Unchecked, 1.4s Time] [2022-11-25 22:27:53,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2022-11-25 22:27:53,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 239. [2022-11-25 22:27:53,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239 states, 182 states have (on average 1.401098901098901) internal successors, (255), 232 states have internal predecessors, (255), 2 states have call successors, (2), 2 states have call predecessors, (2), 4 states have return successors, (4), 4 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-25 22:27:53,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 261 transitions. [2022-11-25 22:27:53,279 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 261 transitions. Word has length 44 [2022-11-25 22:27:53,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:27:53,280 INFO L495 AbstractCegarLoop]: Abstraction has 239 states and 261 transitions. [2022-11-25 22:27:53,280 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 5.333333333333333) internal successors, (32), 7 states have internal predecessors, (32), 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) [2022-11-25 22:27:53,280 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 261 transitions. [2022-11-25 22:27:53,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-11-25 22:27:53,281 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:27:53,281 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 22:27:53,300 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/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 (27)] Ended with exit code 0 [2022-11-25 22:27:53,504 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (28)] Forceful destruction successful, exit code 0 [2022-11-25 22:27:53,698 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/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 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt [2022-11-25 22:27:53,699 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_dataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-11-25 22:27:53,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:27:53,699 INFO L85 PathProgramCache]: Analyzing trace with hash -663465001, now seen corresponding path program 1 times [2022-11-25 22:27:53,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-25 22:27:53,699 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1625990124] [2022-11-25 22:27:53,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:27:53,700 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 [2022-11-25 22:27:53,700 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/mathsat [2022-11-25 22:27:53,700 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/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) [2022-11-25 22:27:53,702 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/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)] Waiting until timeout for monitored process [2022-11-25 22:27:54,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:27:54,054 INFO L263 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-25 22:27:54,057 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:27:54,061 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 [2022-11-25 22:27:54,067 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 [2022-11-25 22:27:54,216 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 13 treesize of output 9 [2022-11-25 22:27:54,280 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 9 [2022-11-25 22:27:54,294 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_arrayElimCell_112 (_ BitVec 32)) (create_data_~data~0.base (_ BitVec 32)) (v_ArrVal_1320 (_ BitVec 32))) (and (= (select |c_old(#valid)| create_data_~data~0.base) (_ bv0 1)) (= |c_#length| (store (store |c_old(#length)| create_data_~data~0.base v_ArrVal_1320) v_arrayElimCell_112 (_ bv80 32))))) is different from true [2022-11-25 22:27:54,578 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:27:54,630 INFO L321 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2022-11-25 22:27:54,630 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 2 case distinctions, treesize of input 15 treesize of output 27 [2022-11-25 22:27:54,651 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-25 22:27:54,651 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 [2022-11-25 22:27:54,710 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 5 not checked. [2022-11-25 22:27:54,710 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 22:27:57,040 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-25 22:27:57,041 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1625990124] [2022-11-25 22:27:57,041 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1625990124] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 22:27:57,041 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [388412479] [2022-11-25 22:27:57,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:27:57,041 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-25 22:27:57,042 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/cvc4 [2022-11-25 22:27:57,044 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-25 22:27:57,063 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (30)] Waiting until timeout for monitored process [2022-11-25 22:27:57,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:27:57,790 INFO L263 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-25 22:27:57,793 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:27:57,829 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 [2022-11-25 22:27:57,848 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 [2022-11-25 22:27:57,943 WARN L859 $PredicateComparison]: unable to prove that (exists ((create_data_~data~0.base (_ BitVec 32))) (and (= (select |c_old(#valid)| create_data_~data~0.base) (_ bv0 1)) (exists ((v_ArrVal_1433 (_ BitVec 32))) (= (store (store |c_old(#length)| create_data_~data~0.base v_ArrVal_1433) |c_create_data_#t~malloc7.base| (_ bv80 32)) |c_#length|)))) is different from true [2022-11-25 22:27:57,962 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_1433 (_ BitVec 32)) (create_data_~data~0.base (_ BitVec 32)) (|create_data_#t~malloc7.base| (_ BitVec 32))) (and (= (select |c_old(#valid)| create_data_~data~0.base) (_ bv0 1)) (= (store (store |c_old(#length)| create_data_~data~0.base v_ArrVal_1433) |create_data_#t~malloc7.base| (_ bv80 32)) |c_#length|))) is different from true [2022-11-25 22:27:58,259 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:27:58,307 INFO L321 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2022-11-25 22:27:58,308 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 2 case distinctions, treesize of input 15 treesize of output 27 [2022-11-25 22:27:58,328 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-25 22:27:58,328 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 [2022-11-25 22:27:58,369 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-25 22:27:58,369 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 22:27:58,370 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [388412479] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:27:58,370 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 22:27:58,370 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 10 [2022-11-25 22:27:58,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309287413] [2022-11-25 22:27:58,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:27:58,371 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-25 22:27:58,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-25 22:27:58,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-25 22:27:58,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=72, Unknown=4, NotChecked=54, Total=156 [2022-11-25 22:27:58,372 INFO L87 Difference]: Start difference. First operand 239 states and 261 transitions. Second operand has 8 states, 7 states have (on average 4.571428571428571) internal successors, (32), 7 states have internal predecessors, (32), 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) [2022-11-25 22:27:59,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:27:59,957 INFO L93 Difference]: Finished difference Result 387 states and 425 transitions. [2022-11-25 22:27:59,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-25 22:27:59,958 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 4.571428571428571) internal successors, (32), 7 states have internal predecessors, (32), 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 44 [2022-11-25 22:27:59,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:27:59,959 INFO L225 Difference]: With dead ends: 387 [2022-11-25 22:27:59,960 INFO L226 Difference]: Without dead ends: 387 [2022-11-25 22:27:59,960 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 76 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=32, Invalid=86, Unknown=4, NotChecked=60, Total=182 [2022-11-25 22:27:59,960 INFO L413 NwaCegarLoop]: 120 mSDtfsCounter, 148 mSDsluCounter, 312 mSDsCounter, 0 mSdLazyCounter, 488 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 432 SdHoareTripleChecker+Invalid, 1036 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 488 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 543 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-11-25 22:27:59,961 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [148 Valid, 432 Invalid, 1036 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 488 Invalid, 0 Unknown, 543 Unchecked, 1.5s Time] [2022-11-25 22:27:59,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 387 states. [2022-11-25 22:27:59,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 387 to 254. [2022-11-25 22:27:59,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 254 states, 195 states have (on average 1.3948717948717948) internal successors, (272), 245 states have internal predecessors, (272), 2 states have call successors, (2), 2 states have call predecessors, (2), 6 states have return successors, (6), 6 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-25 22:27:59,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 280 transitions. [2022-11-25 22:27:59,972 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 280 transitions. Word has length 44 [2022-11-25 22:27:59,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:27:59,973 INFO L495 AbstractCegarLoop]: Abstraction has 254 states and 280 transitions. [2022-11-25 22:27:59,973 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 4.571428571428571) internal successors, (32), 7 states have internal predecessors, (32), 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) [2022-11-25 22:27:59,973 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 280 transitions. [2022-11-25 22:27:59,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-11-25 22:27:59,976 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:27:59,976 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 22:27:59,987 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (30)] Forceful destruction successful, exit code 0 [2022-11-25 22:28:00,203 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/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)] Forceful destruction successful, exit code 0 [2022-11-25 22:28:00,382 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt,29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/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 [2022-11-25 22:28:00,382 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_dataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-11-25 22:28:00,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:28:00,383 INFO L85 PathProgramCache]: Analyzing trace with hash -1359492876, now seen corresponding path program 1 times [2022-11-25 22:28:00,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-25 22:28:00,383 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1570704497] [2022-11-25 22:28:00,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:28:00,384 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 [2022-11-25 22:28:00,384 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/mathsat [2022-11-25 22:28:00,385 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/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) [2022-11-25 22:28:00,419 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/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 [2022-11-25 22:28:00,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:28:00,789 INFO L263 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-25 22:28:00,791 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:28:00,799 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 22:28:00,799 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 22:28:00,800 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 22:28:00,803 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 30 treesize of output 39 [2022-11-25 22:28:00,940 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-25 22:28:00,940 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 70 treesize of output 26 [2022-11-25 22:28:01,003 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-25 22:28:01,003 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 22:28:01,003 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-25 22:28:01,003 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1570704497] [2022-11-25 22:28:01,004 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1570704497] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:28:01,004 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 22:28:01,004 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-25 22:28:01,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982208101] [2022-11-25 22:28:01,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:28:01,004 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-25 22:28:01,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-25 22:28:01,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-25 22:28:01,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-25 22:28:01,005 INFO L87 Difference]: Start difference. First operand 254 states and 280 transitions. Second operand has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 6 states have internal predecessors, (34), 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) [2022-11-25 22:28:01,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:28:01,694 INFO L93 Difference]: Finished difference Result 296 states and 330 transitions. [2022-11-25 22:28:01,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-25 22:28:01,695 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 6 states have internal predecessors, (34), 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 46 [2022-11-25 22:28:01,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:28:01,697 INFO L225 Difference]: With dead ends: 296 [2022-11-25 22:28:01,697 INFO L226 Difference]: Without dead ends: 296 [2022-11-25 22:28:01,697 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2022-11-25 22:28:01,698 INFO L413 NwaCegarLoop]: 152 mSDtfsCounter, 28 mSDsluCounter, 554 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 706 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-25 22:28:01,698 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 706 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-25 22:28:01,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2022-11-25 22:28:01,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 264. [2022-11-25 22:28:01,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 264 states, 205 states have (on average 1.3804878048780487) internal successors, (283), 255 states have internal predecessors, (283), 2 states have call successors, (2), 2 states have call predecessors, (2), 6 states have return successors, (6), 6 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-25 22:28:01,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 291 transitions. [2022-11-25 22:28:01,706 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 291 transitions. Word has length 46 [2022-11-25 22:28:01,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:28:01,706 INFO L495 AbstractCegarLoop]: Abstraction has 264 states and 291 transitions. [2022-11-25 22:28:01,706 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 6 states have internal predecessors, (34), 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) [2022-11-25 22:28:01,707 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 291 transitions. [2022-11-25 22:28:01,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-11-25 22:28:01,708 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:28:01,708 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 22:28:01,733 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/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)] Forceful destruction successful, exit code 0 [2022-11-25 22:28:01,923 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/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 [2022-11-25 22:28:01,924 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_dataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-11-25 22:28:01,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:28:01,924 INFO L85 PathProgramCache]: Analyzing trace with hash 918765396, now seen corresponding path program 1 times [2022-11-25 22:28:01,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-25 22:28:01,924 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [364991033] [2022-11-25 22:28:01,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:28:01,925 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 [2022-11-25 22:28:01,925 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/mathsat [2022-11-25 22:28:01,926 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/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) [2022-11-25 22:28:01,963 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/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 [2022-11-25 22:28:02,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:28:02,209 INFO L263 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-25 22:28:02,210 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:28:02,231 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-25 22:28:02,231 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 22:28:02,231 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-25 22:28:02,231 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [364991033] [2022-11-25 22:28:02,231 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [364991033] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:28:02,232 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 22:28:02,232 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 22:28:02,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043036319] [2022-11-25 22:28:02,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:28:02,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 22:28:02,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-25 22:28:02,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 22:28:02,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 22:28:02,233 INFO L87 Difference]: Start difference. First operand 264 states and 291 transitions. Second operand has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 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) [2022-11-25 22:28:02,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:28:02,274 INFO L93 Difference]: Finished difference Result 272 states and 297 transitions. [2022-11-25 22:28:02,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 22:28:02,275 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 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 46 [2022-11-25 22:28:02,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:28:02,276 INFO L225 Difference]: With dead ends: 272 [2022-11-25 22:28:02,276 INFO L226 Difference]: Without dead ends: 272 [2022-11-25 22:28:02,276 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-25 22:28:02,277 INFO L413 NwaCegarLoop]: 154 mSDtfsCounter, 3 mSDsluCounter, 301 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 455 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 22:28:02,277 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 455 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 22:28:02,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2022-11-25 22:28:02,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 270. [2022-11-25 22:28:02,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 270 states, 211 states have (on average 1.3601895734597156) internal successors, (287), 261 states have internal predecessors, (287), 2 states have call successors, (2), 2 states have call predecessors, (2), 6 states have return successors, (6), 6 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-25 22:28:02,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 295 transitions. [2022-11-25 22:28:02,293 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 295 transitions. Word has length 46 [2022-11-25 22:28:02,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:28:02,294 INFO L495 AbstractCegarLoop]: Abstraction has 270 states and 295 transitions. [2022-11-25 22:28:02,294 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 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) [2022-11-25 22:28:02,294 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 295 transitions. [2022-11-25 22:28:02,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-11-25 22:28:02,295 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:28:02,295 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 22:28:02,315 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/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 [2022-11-25 22:28:02,509 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/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 [2022-11-25 22:28:02,510 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_dataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-11-25 22:28:02,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:28:02,510 INFO L85 PathProgramCache]: Analyzing trace with hash -1934703003, now seen corresponding path program 1 times [2022-11-25 22:28:02,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-25 22:28:02,511 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1562653505] [2022-11-25 22:28:02,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:28:02,511 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 [2022-11-25 22:28:02,511 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/mathsat [2022-11-25 22:28:02,512 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/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) [2022-11-25 22:28:02,518 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/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 [2022-11-25 22:28:02,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:28:02,840 INFO L263 TraceCheckSpWp]: Trace formula consists of 289 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-25 22:28:02,842 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:28:02,846 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 [2022-11-25 22:28:02,912 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 13 treesize of output 9 [2022-11-25 22:28:02,966 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 9 [2022-11-25 22:28:03,267 INFO L321 Elim1Store]: treesize reduction 56, result has 25.3 percent of original size [2022-11-25 22:28:03,268 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 4 case distinctions, treesize of input 22 treesize of output 34 [2022-11-25 22:28:03,362 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-25 22:28:03,362 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 22:28:07,533 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-25 22:28:07,534 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1562653505] [2022-11-25 22:28:07,534 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1562653505] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 22:28:07,534 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1837336891] [2022-11-25 22:28:07,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:28:07,534 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-25 22:28:07,534 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/cvc4 [2022-11-25 22:28:07,536 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-25 22:28:07,538 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (34)] Waiting until timeout for monitored process [2022-11-25 22:28:08,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:28:08,255 INFO L263 TraceCheckSpWp]: Trace formula consists of 289 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-25 22:28:08,257 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:28:08,422 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 7 treesize of output 5 [2022-11-25 22:28:09,129 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:28:09,136 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:28:09,165 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-25 22:28:09,165 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 31 [2022-11-25 22:28:09,266 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-25 22:28:09,266 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 22:28:09,266 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1837336891] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:28:09,266 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 22:28:09,267 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 13 [2022-11-25 22:28:09,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526077573] [2022-11-25 22:28:09,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:28:09,267 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-25 22:28:09,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-25 22:28:09,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-25 22:28:09,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=170, Unknown=2, NotChecked=0, Total=210 [2022-11-25 22:28:09,268 INFO L87 Difference]: Start difference. First operand 270 states and 295 transitions. Second operand has 8 states, 7 states have (on average 4.857142857142857) internal successors, (34), 8 states have internal predecessors, (34), 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) [2022-11-25 22:28:12,241 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.30s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 22:28:12,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:28:12,654 INFO L93 Difference]: Finished difference Result 348 states and 375 transitions. [2022-11-25 22:28:12,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-25 22:28:12,655 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 4.857142857142857) internal successors, (34), 8 states have internal predecessors, (34), 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 46 [2022-11-25 22:28:12,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:28:12,657 INFO L225 Difference]: With dead ends: 348 [2022-11-25 22:28:12,657 INFO L226 Difference]: Without dead ends: 348 [2022-11-25 22:28:12,657 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=60, Invalid=244, Unknown=2, NotChecked=0, Total=306 [2022-11-25 22:28:12,658 INFO L413 NwaCegarLoop]: 89 mSDtfsCounter, 407 mSDsluCounter, 322 mSDsCounter, 0 mSdLazyCounter, 430 mSolverCounterSat, 15 mSolverCounterUnsat, 18 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 407 SdHoareTripleChecker+Valid, 411 SdHoareTripleChecker+Invalid, 463 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 430 IncrementalHoareTripleChecker+Invalid, 18 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-11-25 22:28:12,658 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [407 Valid, 411 Invalid, 463 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 430 Invalid, 18 Unknown, 0 Unchecked, 3.2s Time] [2022-11-25 22:28:12,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 348 states. [2022-11-25 22:28:12,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 348 to 273. [2022-11-25 22:28:12,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 273 states, 214 states have (on average 1.3598130841121496) internal successors, (291), 264 states have internal predecessors, (291), 2 states have call successors, (2), 2 states have call predecessors, (2), 6 states have return successors, (6), 6 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-25 22:28:12,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 299 transitions. [2022-11-25 22:28:12,666 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 299 transitions. Word has length 46 [2022-11-25 22:28:12,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:28:12,666 INFO L495 AbstractCegarLoop]: Abstraction has 273 states and 299 transitions. [2022-11-25 22:28:12,666 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 4.857142857142857) internal successors, (34), 8 states have internal predecessors, (34), 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) [2022-11-25 22:28:12,666 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 299 transitions. [2022-11-25 22:28:12,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-11-25 22:28:12,667 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:28:12,667 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 22:28:12,677 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (34)] Forceful destruction successful, exit code 0 [2022-11-25 22:28:12,887 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/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)] Forceful destruction successful, exit code 0 [2022-11-25 22:28:13,068 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt,33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/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 [2022-11-25 22:28:13,068 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_dataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-11-25 22:28:13,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:28:13,068 INFO L85 PathProgramCache]: Analyzing trace with hash -1934703002, now seen corresponding path program 1 times [2022-11-25 22:28:13,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-25 22:28:13,069 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [673252826] [2022-11-25 22:28:13,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:28:13,069 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 [2022-11-25 22:28:13,069 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/mathsat [2022-11-25 22:28:13,070 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/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) [2022-11-25 22:28:13,072 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/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 (35)] Waiting until timeout for monitored process [2022-11-25 22:28:13,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:28:13,453 INFO L263 TraceCheckSpWp]: Trace formula consists of 289 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-25 22:28:13,454 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:28:13,584 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 13 treesize of output 9 [2022-11-25 22:28:13,677 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 9 [2022-11-25 22:28:13,691 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_1984 (_ BitVec 32)) (v_arrayElimCell_128 (_ BitVec 32)) (create_data_~data~0.base (_ BitVec 32))) (and (= (select |c_old(#valid)| create_data_~data~0.base) (_ bv0 1)) (= |c_#length| (store (store |c_old(#length)| create_data_~data~0.base v_ArrVal_1984) v_arrayElimCell_128 (_ bv80 32))))) is different from true [2022-11-25 22:28:13,963 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:28:14,020 INFO L321 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2022-11-25 22:28:14,020 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 2 case distinctions, treesize of input 17 treesize of output 29 [2022-11-25 22:28:14,044 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-25 22:28:14,044 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 [2022-11-25 22:28:14,174 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 5 not checked. [2022-11-25 22:28:14,174 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 22:28:14,559 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-25 22:28:14,559 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [673252826] [2022-11-25 22:28:14,559 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [673252826] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 22:28:14,559 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [708688107] [2022-11-25 22:28:14,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:28:14,560 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-25 22:28:14,560 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/cvc4 [2022-11-25 22:28:14,561 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-25 22:28:14,563 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (36)] Waiting until timeout for monitored process [2022-11-25 22:28:15,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:28:15,359 INFO L263 TraceCheckSpWp]: Trace formula consists of 289 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-25 22:28:15,362 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:28:15,368 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 [2022-11-25 22:28:15,443 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:28:15,444 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 [2022-11-25 22:28:15,724 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 13 treesize of output 9 [2022-11-25 22:28:16,757 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:28:16,764 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:28:16,805 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-25 22:28:16,806 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 28 [2022-11-25 22:28:16,997 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-25 22:28:16,997 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 22:28:16,997 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [708688107] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:28:16,998 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 22:28:16,998 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 15 [2022-11-25 22:28:16,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748385000] [2022-11-25 22:28:16,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:28:16,999 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-25 22:28:16,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-25 22:28:16,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-25 22:28:17,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=228, Unknown=3, NotChecked=30, Total=306 [2022-11-25 22:28:17,000 INFO L87 Difference]: Start difference. First operand 273 states and 299 transitions. Second operand has 8 states, 7 states have (on average 4.857142857142857) internal successors, (34), 8 states have internal predecessors, (34), 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) [2022-11-25 22:28:19,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:28:19,954 INFO L93 Difference]: Finished difference Result 481 states and 525 transitions. [2022-11-25 22:28:19,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-25 22:28:19,955 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 4.857142857142857) internal successors, (34), 8 states have internal predecessors, (34), 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 46 [2022-11-25 22:28:19,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:28:19,957 INFO L225 Difference]: With dead ends: 481 [2022-11-25 22:28:19,957 INFO L226 Difference]: Without dead ends: 481 [2022-11-25 22:28:19,958 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=58, Invalid=283, Unknown=5, NotChecked=34, Total=380 [2022-11-25 22:28:19,958 INFO L413 NwaCegarLoop]: 93 mSDtfsCounter, 268 mSDsluCounter, 349 mSDsCounter, 0 mSdLazyCounter, 429 mSolverCounterSat, 13 mSolverCounterUnsat, 96 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 268 SdHoareTripleChecker+Valid, 442 SdHoareTripleChecker+Invalid, 538 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 429 IncrementalHoareTripleChecker+Invalid, 96 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-11-25 22:28:19,958 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [268 Valid, 442 Invalid, 538 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 429 Invalid, 96 Unknown, 0 Unchecked, 2.8s Time] [2022-11-25 22:28:19,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 481 states. [2022-11-25 22:28:19,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 481 to 417. [2022-11-25 22:28:19,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 417 states, 352 states have (on average 1.3153409090909092) internal successors, (463), 402 states have internal predecessors, (463), 4 states have call successors, (4), 4 states have call predecessors, (4), 10 states have return successors, (12), 10 states have call predecessors, (12), 4 states have call successors, (12) [2022-11-25 22:28:19,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 417 states to 417 states and 479 transitions. [2022-11-25 22:28:19,970 INFO L78 Accepts]: Start accepts. Automaton has 417 states and 479 transitions. Word has length 46 [2022-11-25 22:28:19,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:28:19,971 INFO L495 AbstractCegarLoop]: Abstraction has 417 states and 479 transitions. [2022-11-25 22:28:19,971 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 4.857142857142857) internal successors, (34), 8 states have internal predecessors, (34), 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) [2022-11-25 22:28:19,971 INFO L276 IsEmpty]: Start isEmpty. Operand 417 states and 479 transitions. [2022-11-25 22:28:19,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-11-25 22:28:19,972 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:28:19,972 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 22:28:19,979 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (36)] Forceful destruction successful, exit code 0 [2022-11-25 22:28:20,200 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/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 (35)] Forceful destruction successful, exit code 0 [2022-11-25 22:28:20,379 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt,35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/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 [2022-11-25 22:28:20,379 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_dataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-11-25 22:28:20,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:28:20,380 INFO L85 PathProgramCache]: Analyzing trace with hash 2050875697, now seen corresponding path program 1 times [2022-11-25 22:28:20,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-25 22:28:20,380 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [806433117] [2022-11-25 22:28:20,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:28:20,380 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 [2022-11-25 22:28:20,381 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/mathsat [2022-11-25 22:28:20,383 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/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) [2022-11-25 22:28:20,387 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/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 (37)] Waiting until timeout for monitored process [2022-11-25 22:28:20,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:28:20,766 INFO L263 TraceCheckSpWp]: Trace formula consists of 287 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-25 22:28:20,768 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:28:20,784 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 [2022-11-25 22:28:20,793 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 [2022-11-25 22:28:20,953 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 13 treesize of output 9 [2022-11-25 22:28:21,020 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 9 [2022-11-25 22:28:21,032 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_arrayElimCell_135 (_ BitVec 32)) (v_ArrVal_2213 (_ BitVec 32)) (create_data_~data~0.base (_ BitVec 32))) (and (= (select |c_old(#valid)| create_data_~data~0.base) (_ bv0 1)) (= (store (store |c_old(#length)| create_data_~data~0.base v_ArrVal_2213) v_arrayElimCell_135 (_ bv80 32)) |c_#length|))) is different from true [2022-11-25 22:28:21,344 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:28:21,401 INFO L321 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2022-11-25 22:28:21,401 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 2 case distinctions, treesize of input 15 treesize of output 27 [2022-11-25 22:28:21,425 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-25 22:28:21,425 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 [2022-11-25 22:28:21,491 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 5 not checked. [2022-11-25 22:28:21,491 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 22:28:23,871 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-25 22:28:23,871 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [806433117] [2022-11-25 22:28:23,871 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [806433117] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 22:28:23,872 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1213589509] [2022-11-25 22:28:23,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:28:23,872 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-25 22:28:23,872 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/cvc4 [2022-11-25 22:28:23,873 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-25 22:28:23,875 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (38)] Waiting until timeout for monitored process [2022-11-25 22:28:24,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:28:24,734 INFO L263 TraceCheckSpWp]: Trace formula consists of 287 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-25 22:28:24,736 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:28:24,775 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 [2022-11-25 22:28:24,784 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 [2022-11-25 22:28:24,862 WARN L859 $PredicateComparison]: unable to prove that (exists ((create_data_~data~0.base (_ BitVec 32)) (|create_data_#t~malloc7.base| (_ BitVec 32))) (and (= (select |c_old(#valid)| create_data_~data~0.base) (_ bv0 1)) (exists ((v_ArrVal_2326 (_ BitVec 32))) (= |c_#length| (store (store |c_old(#length)| create_data_~data~0.base v_ArrVal_2326) |create_data_#t~malloc7.base| (_ bv80 32)))))) is different from true [2022-11-25 22:28:25,186 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:28:25,240 INFO L321 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2022-11-25 22:28:25,241 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 2 case distinctions, treesize of input 15 treesize of output 27 [2022-11-25 22:28:25,265 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-25 22:28:25,265 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 [2022-11-25 22:28:25,311 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-25 22:28:25,311 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 22:28:25,311 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1213589509] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:28:25,311 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 22:28:25,311 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 9 [2022-11-25 22:28:25,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47215139] [2022-11-25 22:28:25,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:28:25,312 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 22:28:25,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-25 22:28:25,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 22:28:25,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=71, Unknown=3, NotChecked=34, Total=132 [2022-11-25 22:28:25,313 INFO L87 Difference]: Start difference. First operand 417 states and 479 transitions. Second operand has 7 states, 6 states have (on average 6.0) internal successors, (36), 6 states have internal predecessors, (36), 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) [2022-11-25 22:28:27,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:28:27,022 INFO L93 Difference]: Finished difference Result 602 states and 699 transitions. [2022-11-25 22:28:27,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-25 22:28:27,023 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 6.0) internal successors, (36), 6 states have internal predecessors, (36), 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 48 [2022-11-25 22:28:27,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:28:27,025 INFO L225 Difference]: With dead ends: 602 [2022-11-25 22:28:27,025 INFO L226 Difference]: Without dead ends: 602 [2022-11-25 22:28:27,026 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 85 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=35, Invalid=102, Unknown=3, NotChecked=42, Total=182 [2022-11-25 22:28:27,026 INFO L413 NwaCegarLoop]: 183 mSDtfsCounter, 232 mSDsluCounter, 271 mSDsCounter, 0 mSdLazyCounter, 515 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 232 SdHoareTripleChecker+Valid, 454 SdHoareTripleChecker+Invalid, 872 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 515 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 352 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-11-25 22:28:27,026 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [232 Valid, 454 Invalid, 872 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 515 Invalid, 0 Unknown, 352 Unchecked, 1.6s Time] [2022-11-25 22:28:27,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 602 states. [2022-11-25 22:28:27,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 602 to 423. [2022-11-25 22:28:27,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 423 states, 358 states have (on average 1.3156424581005586) internal successors, (471), 408 states have internal predecessors, (471), 4 states have call successors, (4), 4 states have call predecessors, (4), 10 states have return successors, (12), 10 states have call predecessors, (12), 4 states have call successors, (12) [2022-11-25 22:28:27,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 423 states to 423 states and 487 transitions. [2022-11-25 22:28:27,040 INFO L78 Accepts]: Start accepts. Automaton has 423 states and 487 transitions. Word has length 48 [2022-11-25 22:28:27,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:28:27,040 INFO L495 AbstractCegarLoop]: Abstraction has 423 states and 487 transitions. [2022-11-25 22:28:27,040 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 6.0) internal successors, (36), 6 states have internal predecessors, (36), 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) [2022-11-25 22:28:27,040 INFO L276 IsEmpty]: Start isEmpty. Operand 423 states and 487 transitions. [2022-11-25 22:28:27,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-11-25 22:28:27,041 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:28:27,041 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 22:28:27,062 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/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 (37)] Forceful destruction successful, exit code 0 [2022-11-25 22:28:27,265 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (38)] Forceful destruction successful, exit code 0 [2022-11-25 22:28:27,454 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt [2022-11-25 22:28:27,454 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_dataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-11-25 22:28:27,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:28:27,454 INFO L85 PathProgramCache]: Analyzing trace with hash 471257990, now seen corresponding path program 1 times [2022-11-25 22:28:27,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-25 22:28:27,455 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [726448928] [2022-11-25 22:28:27,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:28:27,455 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 [2022-11-25 22:28:27,455 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/mathsat [2022-11-25 22:28:27,456 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/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) [2022-11-25 22:28:27,460 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/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 [2022-11-25 22:28:27,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:28:27,734 INFO L263 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-25 22:28:27,735 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:28:27,774 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-25 22:28:27,775 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 22:28:27,775 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-25 22:28:27,775 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [726448928] [2022-11-25 22:28:27,775 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [726448928] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:28:27,775 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 22:28:27,775 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 22:28:27,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043278975] [2022-11-25 22:28:27,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:28:27,776 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 22:28:27,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-25 22:28:27,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 22:28:27,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 22:28:27,777 INFO L87 Difference]: Start difference. First operand 423 states and 487 transitions. Second operand has 4 states, 3 states have (on average 12.0) internal successors, (36), 4 states have internal predecessors, (36), 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) [2022-11-25 22:28:28,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:28:28,179 INFO L93 Difference]: Finished difference Result 422 states and 485 transitions. [2022-11-25 22:28:28,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 22:28:28,180 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 12.0) internal successors, (36), 4 states have internal predecessors, (36), 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 48 [2022-11-25 22:28:28,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:28:28,182 INFO L225 Difference]: With dead ends: 422 [2022-11-25 22:28:28,182 INFO L226 Difference]: Without dead ends: 422 [2022-11-25 22:28:28,183 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-25 22:28:28,183 INFO L413 NwaCegarLoop]: 111 mSDtfsCounter, 142 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 217 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-25 22:28:28,184 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [142 Valid, 217 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-25 22:28:28,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 422 states. [2022-11-25 22:28:28,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 422 to 422. [2022-11-25 22:28:28,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 422 states, 358 states have (on average 1.3100558659217878) internal successors, (469), 407 states have internal predecessors, (469), 4 states have call successors, (4), 4 states have call predecessors, (4), 10 states have return successors, (12), 10 states have call predecessors, (12), 4 states have call successors, (12) [2022-11-25 22:28:28,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 422 states to 422 states and 485 transitions. [2022-11-25 22:28:28,195 INFO L78 Accepts]: Start accepts. Automaton has 422 states and 485 transitions. Word has length 48 [2022-11-25 22:28:28,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:28:28,196 INFO L495 AbstractCegarLoop]: Abstraction has 422 states and 485 transitions. [2022-11-25 22:28:28,196 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 12.0) internal successors, (36), 4 states have internal predecessors, (36), 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) [2022-11-25 22:28:28,196 INFO L276 IsEmpty]: Start isEmpty. Operand 422 states and 485 transitions. [2022-11-25 22:28:28,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-11-25 22:28:28,197 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:28:28,197 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 22:28:28,213 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/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)] Forceful destruction successful, exit code 0 [2022-11-25 22:28:28,412 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/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 [2022-11-25 22:28:28,413 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_dataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-11-25 22:28:28,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:28:28,413 INFO L85 PathProgramCache]: Analyzing trace with hash 471257991, now seen corresponding path program 1 times [2022-11-25 22:28:28,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-25 22:28:28,413 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [727547042] [2022-11-25 22:28:28,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:28:28,414 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 [2022-11-25 22:28:28,414 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/mathsat [2022-11-25 22:28:28,415 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/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) [2022-11-25 22:28:28,416 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/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 (40)] Waiting until timeout for monitored process [2022-11-25 22:28:28,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:28:28,744 INFO L263 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-25 22:28:28,745 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:28:28,907 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-25 22:28:28,907 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 22:28:28,907 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-25 22:28:28,907 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [727547042] [2022-11-25 22:28:28,907 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [727547042] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:28:28,907 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 22:28:28,908 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 22:28:28,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090031595] [2022-11-25 22:28:28,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:28:28,908 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 22:28:28,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-25 22:28:28,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 22:28:28,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-25 22:28:28,909 INFO L87 Difference]: Start difference. First operand 422 states and 485 transitions. Second operand has 5 states, 4 states have (on average 9.0) internal successors, (36), 5 states have internal predecessors, (36), 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) [2022-11-25 22:28:29,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:28:29,172 INFO L93 Difference]: Finished difference Result 413 states and 473 transitions. [2022-11-25 22:28:29,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 22:28:29,173 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 9.0) internal successors, (36), 5 states have internal predecessors, (36), 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 48 [2022-11-25 22:28:29,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:28:29,175 INFO L225 Difference]: With dead ends: 413 [2022-11-25 22:28:29,175 INFO L226 Difference]: Without dead ends: 413 [2022-11-25 22:28:29,175 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-11-25 22:28:29,176 INFO L413 NwaCegarLoop]: 115 mSDtfsCounter, 139 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 245 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-25 22:28:29,176 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [139 Valid, 245 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-25 22:28:29,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 413 states. [2022-11-25 22:28:29,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 413 to 413. [2022-11-25 22:28:29,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 413 states, 358 states have (on average 1.276536312849162) internal successors, (457), 398 states have internal predecessors, (457), 4 states have call successors, (4), 4 states have call predecessors, (4), 10 states have return successors, (12), 10 states have call predecessors, (12), 4 states have call successors, (12) [2022-11-25 22:28:29,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 413 states to 413 states and 473 transitions. [2022-11-25 22:28:29,187 INFO L78 Accepts]: Start accepts. Automaton has 413 states and 473 transitions. Word has length 48 [2022-11-25 22:28:29,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:28:29,187 INFO L495 AbstractCegarLoop]: Abstraction has 413 states and 473 transitions. [2022-11-25 22:28:29,187 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 9.0) internal successors, (36), 5 states have internal predecessors, (36), 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) [2022-11-25 22:28:29,188 INFO L276 IsEmpty]: Start isEmpty. Operand 413 states and 473 transitions. [2022-11-25 22:28:29,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-11-25 22:28:29,188 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:28:29,188 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 22:28:29,208 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/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 (40)] Ended with exit code 0 [2022-11-25 22:28:29,402 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/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 [2022-11-25 22:28:29,403 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_dataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-11-25 22:28:29,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:28:29,404 INFO L85 PathProgramCache]: Analyzing trace with hash 1724095953, now seen corresponding path program 1 times [2022-11-25 22:28:29,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-25 22:28:29,405 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2009328778] [2022-11-25 22:28:29,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:28:29,405 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 [2022-11-25 22:28:29,405 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/mathsat [2022-11-25 22:28:29,406 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/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) [2022-11-25 22:28:29,451 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/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 (41)] Waiting until timeout for monitored process [2022-11-25 22:28:29,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:28:29,748 INFO L263 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-25 22:28:29,750 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:28:29,853 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 11 treesize of output 7 [2022-11-25 22:28:29,873 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 19 treesize of output 11 [2022-11-25 22:28:29,888 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-25 22:28:29,888 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 22:28:29,888 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-25 22:28:29,888 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2009328778] [2022-11-25 22:28:29,888 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2009328778] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:28:29,888 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 22:28:29,888 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-25 22:28:29,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764545431] [2022-11-25 22:28:29,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:28:29,889 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-25 22:28:29,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-25 22:28:29,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-25 22:28:29,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-25 22:28:29,890 INFO L87 Difference]: Start difference. First operand 413 states and 473 transitions. Second operand has 6 states, 5 states have (on average 7.4) internal successors, (37), 6 states have internal predecessors, (37), 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) [2022-11-25 22:28:30,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:28:30,804 INFO L93 Difference]: Finished difference Result 434 states and 494 transitions. [2022-11-25 22:28:30,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 22:28:30,805 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 7.4) internal successors, (37), 6 states have internal predecessors, (37), 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 49 [2022-11-25 22:28:30,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:28:30,806 INFO L225 Difference]: With dead ends: 434 [2022-11-25 22:28:30,807 INFO L226 Difference]: Without dead ends: 434 [2022-11-25 22:28:30,807 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-25 22:28:30,807 INFO L413 NwaCegarLoop]: 113 mSDtfsCounter, 149 mSDsluCounter, 246 mSDsCounter, 0 mSdLazyCounter, 228 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 149 SdHoareTripleChecker+Valid, 359 SdHoareTripleChecker+Invalid, 232 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 228 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-25 22:28:30,808 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [149 Valid, 359 Invalid, 232 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 228 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-25 22:28:30,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2022-11-25 22:28:30,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 412. [2022-11-25 22:28:30,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 412 states, 358 states have (on average 1.270949720670391) internal successors, (455), 397 states have internal predecessors, (455), 4 states have call successors, (4), 4 states have call predecessors, (4), 10 states have return successors, (12), 10 states have call predecessors, (12), 4 states have call successors, (12) [2022-11-25 22:28:30,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 412 states to 412 states and 471 transitions. [2022-11-25 22:28:30,818 INFO L78 Accepts]: Start accepts. Automaton has 412 states and 471 transitions. Word has length 49 [2022-11-25 22:28:30,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:28:30,818 INFO L495 AbstractCegarLoop]: Abstraction has 412 states and 471 transitions. [2022-11-25 22:28:30,819 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 7.4) internal successors, (37), 6 states have internal predecessors, (37), 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) [2022-11-25 22:28:30,819 INFO L276 IsEmpty]: Start isEmpty. Operand 412 states and 471 transitions. [2022-11-25 22:28:30,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-11-25 22:28:30,820 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:28:30,820 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 22:28:30,840 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/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 (41)] Forceful destruction successful, exit code 0 [2022-11-25 22:28:31,034 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/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 [2022-11-25 22:28:31,034 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_dataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-11-25 22:28:31,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:28:31,035 INFO L85 PathProgramCache]: Analyzing trace with hash 1724095954, now seen corresponding path program 1 times [2022-11-25 22:28:31,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-25 22:28:31,035 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1375435791] [2022-11-25 22:28:31,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:28:31,036 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 [2022-11-25 22:28:31,036 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/mathsat [2022-11-25 22:28:31,038 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/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) [2022-11-25 22:28:31,049 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/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 [2022-11-25 22:28:31,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:28:31,433 INFO L263 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-25 22:28:31,435 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:28:31,592 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 11 treesize of output 7 [2022-11-25 22:28:31,600 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 11 treesize of output 7 [2022-11-25 22:28:31,637 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 17 treesize of output 9 [2022-11-25 22:28:31,640 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 [2022-11-25 22:28:31,666 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-25 22:28:31,666 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 22:28:31,666 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-25 22:28:31,666 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1375435791] [2022-11-25 22:28:31,666 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1375435791] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:28:31,666 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 22:28:31,666 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-25 22:28:31,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348389645] [2022-11-25 22:28:31,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:28:31,667 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-25 22:28:31,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-25 22:28:31,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-25 22:28:31,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-25 22:28:31,668 INFO L87 Difference]: Start difference. First operand 412 states and 471 transitions. Second operand has 6 states, 5 states have (on average 7.4) internal successors, (37), 6 states have internal predecessors, (37), 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) [2022-11-25 22:28:32,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:28:32,592 INFO L93 Difference]: Finished difference Result 450 states and 509 transitions. [2022-11-25 22:28:32,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 22:28:32,593 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 7.4) internal successors, (37), 6 states have internal predecessors, (37), 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 49 [2022-11-25 22:28:32,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:28:32,594 INFO L225 Difference]: With dead ends: 450 [2022-11-25 22:28:32,594 INFO L226 Difference]: Without dead ends: 450 [2022-11-25 22:28:32,595 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-25 22:28:32,595 INFO L413 NwaCegarLoop]: 111 mSDtfsCounter, 285 mSDsluCounter, 200 mSDsCounter, 0 mSdLazyCounter, 171 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 285 SdHoareTripleChecker+Valid, 311 SdHoareTripleChecker+Invalid, 175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-25 22:28:32,595 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [285 Valid, 311 Invalid, 175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 171 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-25 22:28:32,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 450 states. [2022-11-25 22:28:32,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 450 to 411. [2022-11-25 22:28:32,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 411 states, 358 states have (on average 1.26536312849162) internal successors, (453), 396 states have internal predecessors, (453), 4 states have call successors, (4), 4 states have call predecessors, (4), 10 states have return successors, (12), 10 states have call predecessors, (12), 4 states have call successors, (12) [2022-11-25 22:28:32,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 411 states to 411 states and 469 transitions. [2022-11-25 22:28:32,605 INFO L78 Accepts]: Start accepts. Automaton has 411 states and 469 transitions. Word has length 49 [2022-11-25 22:28:32,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:28:32,605 INFO L495 AbstractCegarLoop]: Abstraction has 411 states and 469 transitions. [2022-11-25 22:28:32,605 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 7.4) internal successors, (37), 6 states have internal predecessors, (37), 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) [2022-11-25 22:28:32,606 INFO L276 IsEmpty]: Start isEmpty. Operand 411 states and 469 transitions. [2022-11-25 22:28:32,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-11-25 22:28:32,606 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:28:32,606 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 22:28:32,628 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/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)] Ended with exit code 0 [2022-11-25 22:28:32,820 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/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 [2022-11-25 22:28:32,820 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr22REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_dataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-11-25 22:28:32,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:28:32,821 INFO L85 PathProgramCache]: Analyzing trace with hash -42553449, now seen corresponding path program 1 times [2022-11-25 22:28:32,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-25 22:28:32,821 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2042339468] [2022-11-25 22:28:32,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:28:32,821 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 [2022-11-25 22:28:32,821 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/mathsat [2022-11-25 22:28:32,822 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/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) [2022-11-25 22:28:32,832 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/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 (43)] Waiting until timeout for monitored process [2022-11-25 22:28:33,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:28:33,159 INFO L263 TraceCheckSpWp]: Trace formula consists of 323 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-25 22:28:33,161 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:28:33,260 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 11 treesize of output 7 [2022-11-25 22:28:33,294 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 19 treesize of output 11 [2022-11-25 22:28:33,308 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-25 22:28:33,309 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 22:28:33,309 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-25 22:28:33,309 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2042339468] [2022-11-25 22:28:33,309 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2042339468] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:28:33,309 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 22:28:33,309 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-25 22:28:33,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675552624] [2022-11-25 22:28:33,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:28:33,310 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-25 22:28:33,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-25 22:28:33,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-25 22:28:33,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-25 22:28:33,311 INFO L87 Difference]: Start difference. First operand 411 states and 469 transitions. Second operand has 6 states, 5 states have (on average 8.2) internal successors, (41), 6 states have internal predecessors, (41), 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) [2022-11-25 22:28:34,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:28:34,174 INFO L93 Difference]: Finished difference Result 434 states and 492 transitions. [2022-11-25 22:28:34,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 22:28:34,174 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 8.2) internal successors, (41), 6 states have internal predecessors, (41), 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 53 [2022-11-25 22:28:34,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:28:34,176 INFO L225 Difference]: With dead ends: 434 [2022-11-25 22:28:34,177 INFO L226 Difference]: Without dead ends: 434 [2022-11-25 22:28:34,177 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-25 22:28:34,177 INFO L413 NwaCegarLoop]: 113 mSDtfsCounter, 134 mSDsluCounter, 249 mSDsCounter, 0 mSdLazyCounter, 230 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 362 SdHoareTripleChecker+Invalid, 234 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 230 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-25 22:28:34,178 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [134 Valid, 362 Invalid, 234 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 230 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-25 22:28:34,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2022-11-25 22:28:34,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 410. [2022-11-25 22:28:34,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 410 states, 358 states have (on average 1.2597765363128492) internal successors, (451), 395 states have internal predecessors, (451), 4 states have call successors, (4), 4 states have call predecessors, (4), 10 states have return successors, (12), 10 states have call predecessors, (12), 4 states have call successors, (12) [2022-11-25 22:28:34,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 410 states to 410 states and 467 transitions. [2022-11-25 22:28:34,189 INFO L78 Accepts]: Start accepts. Automaton has 410 states and 467 transitions. Word has length 53 [2022-11-25 22:28:34,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:28:34,190 INFO L495 AbstractCegarLoop]: Abstraction has 410 states and 467 transitions. [2022-11-25 22:28:34,190 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 8.2) internal successors, (41), 6 states have internal predecessors, (41), 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) [2022-11-25 22:28:34,190 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states and 467 transitions. [2022-11-25 22:28:34,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-11-25 22:28:34,191 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:28:34,191 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 22:28:34,212 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/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 (43)] Forceful destruction successful, exit code 0 [2022-11-25 22:28:34,406 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/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 [2022-11-25 22:28:34,406 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_dataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-11-25 22:28:34,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:28:34,406 INFO L85 PathProgramCache]: Analyzing trace with hash -42553448, now seen corresponding path program 1 times [2022-11-25 22:28:34,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-25 22:28:34,407 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [745751139] [2022-11-25 22:28:34,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:28:34,407 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 [2022-11-25 22:28:34,407 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/mathsat [2022-11-25 22:28:34,408 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/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) [2022-11-25 22:28:34,409 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/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 (44)] Waiting until timeout for monitored process [2022-11-25 22:28:34,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:28:34,725 INFO L263 TraceCheckSpWp]: Trace formula consists of 323 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-25 22:28:34,727 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:28:34,902 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 11 treesize of output 7 [2022-11-25 22:28:34,910 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 11 treesize of output 7 [2022-11-25 22:28:34,992 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 [2022-11-25 22:28:34,998 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 17 treesize of output 9 [2022-11-25 22:28:35,021 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-25 22:28:35,021 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 22:28:35,021 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-25 22:28:35,021 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [745751139] [2022-11-25 22:28:35,022 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [745751139] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:28:35,022 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 22:28:35,022 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-25 22:28:35,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396250111] [2022-11-25 22:28:35,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:28:35,023 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-25 22:28:35,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-25 22:28:35,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-25 22:28:35,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-25 22:28:35,024 INFO L87 Difference]: Start difference. First operand 410 states and 467 transitions. Second operand has 6 states, 5 states have (on average 8.2) internal successors, (41), 6 states have internal predecessors, (41), 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) [2022-11-25 22:28:36,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:28:36,034 INFO L93 Difference]: Finished difference Result 450 states and 507 transitions. [2022-11-25 22:28:36,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 22:28:36,035 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 8.2) internal successors, (41), 6 states have internal predecessors, (41), 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 53 [2022-11-25 22:28:36,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:28:36,036 INFO L225 Difference]: With dead ends: 450 [2022-11-25 22:28:36,037 INFO L226 Difference]: Without dead ends: 450 [2022-11-25 22:28:36,037 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-25 22:28:36,037 INFO L413 NwaCegarLoop]: 111 mSDtfsCounter, 165 mSDsluCounter, 235 mSDsCounter, 0 mSdLazyCounter, 206 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 346 SdHoareTripleChecker+Invalid, 210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-25 22:28:36,038 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [165 Valid, 346 Invalid, 210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 206 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-25 22:28:36,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 450 states. [2022-11-25 22:28:36,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 450 to 409. [2022-11-25 22:28:36,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 409 states, 358 states have (on average 1.2541899441340782) internal successors, (449), 394 states have internal predecessors, (449), 4 states have call successors, (4), 4 states have call predecessors, (4), 10 states have return successors, (12), 10 states have call predecessors, (12), 4 states have call successors, (12) [2022-11-25 22:28:36,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 409 states to 409 states and 465 transitions. [2022-11-25 22:28:36,047 INFO L78 Accepts]: Start accepts. Automaton has 409 states and 465 transitions. Word has length 53 [2022-11-25 22:28:36,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:28:36,048 INFO L495 AbstractCegarLoop]: Abstraction has 409 states and 465 transitions. [2022-11-25 22:28:36,048 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 8.2) internal successors, (41), 6 states have internal predecessors, (41), 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) [2022-11-25 22:28:36,048 INFO L276 IsEmpty]: Start isEmpty. Operand 409 states and 465 transitions. [2022-11-25 22:28:36,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-11-25 22:28:36,049 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:28:36,049 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 22:28:36,072 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/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 (44)] Forceful destruction successful, exit code 0 [2022-11-25 22:28:36,263 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/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 [2022-11-25 22:28:36,264 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting create_dataErr26REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_dataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-11-25 22:28:36,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:28:36,264 INFO L85 PathProgramCache]: Analyzing trace with hash 1556982670, now seen corresponding path program 1 times [2022-11-25 22:28:36,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-25 22:28:36,264 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [589902920] [2022-11-25 22:28:36,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:28:36,264 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 [2022-11-25 22:28:36,265 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/mathsat [2022-11-25 22:28:36,265 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/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) [2022-11-25 22:28:36,267 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/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 (45)] Waiting until timeout for monitored process [2022-11-25 22:28:36,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:28:36,842 INFO L263 TraceCheckSpWp]: Trace formula consists of 435 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-25 22:28:36,844 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:28:36,848 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 [2022-11-25 22:28:36,904 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-25 22:28:36,904 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 [2022-11-25 22:28:36,920 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-25 22:28:36,920 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 22:28:36,976 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-25 22:28:36,976 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-25 22:28:36,976 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [589902920] [2022-11-25 22:28:36,976 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [589902920] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 22:28:36,977 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [246514374] [2022-11-25 22:28:36,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:28:36,977 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-25 22:28:36,977 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/cvc4 [2022-11-25 22:28:36,978 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-25 22:28:37,003 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (46)] Waiting until timeout for monitored process [2022-11-25 22:28:38,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:28:38,092 INFO L263 TraceCheckSpWp]: Trace formula consists of 435 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-25 22:28:38,094 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:28:38,100 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 [2022-11-25 22:28:38,158 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-25 22:28:38,158 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 [2022-11-25 22:28:38,176 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-25 22:28:38,177 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 22:28:38,239 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-25 22:28:38,239 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [246514374] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 22:28:38,239 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1061138804] [2022-11-25 22:28:38,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:28:38,239 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 22:28:38,240 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 22:28:38,247 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 22:28:38,275 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2022-11-25 22:28:38,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:28:38,621 INFO L263 TraceCheckSpWp]: Trace formula consists of 435 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-25 22:28:38,623 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:28:38,696 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-25 22:28:38,696 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 [2022-11-25 22:28:38,704 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-25 22:28:38,705 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 22:28:38,791 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-25 22:28:38,791 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1061138804] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 22:28:38,791 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-25 22:28:38,792 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3, 3, 3, 3] total 3 [2022-11-25 22:28:38,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835590818] [2022-11-25 22:28:38,793 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-25 22:28:38,793 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 22:28:38,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-25 22:28:38,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 22:28:38,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 22:28:38,794 INFO L87 Difference]: Start difference. First operand 409 states and 465 transitions. Second operand has 4 states, 3 states have (on average 14.666666666666666) internal successors, (44), 4 states have internal predecessors, (44), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 22:28:39,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:28:39,346 INFO L93 Difference]: Finished difference Result 408 states and 463 transitions. [2022-11-25 22:28:39,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 22:28:39,347 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 14.666666666666666) internal successors, (44), 4 states have internal predecessors, (44), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2022-11-25 22:28:39,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:28:39,352 INFO L225 Difference]: With dead ends: 408 [2022-11-25 22:28:39,352 INFO L226 Difference]: Without dead ends: 408 [2022-11-25 22:28:39,353 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 314 GetRequests, 306 SyntacticMatches, 5 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-25 22:28:39,355 INFO L413 NwaCegarLoop]: 122 mSDtfsCounter, 50 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 240 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-25 22:28:39,356 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 240 Invalid, 140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-25 22:28:39,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 408 states. [2022-11-25 22:28:39,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 408 to 408. [2022-11-25 22:28:39,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 408 states, 358 states have (on average 1.2486033519553073) internal successors, (447), 393 states have internal predecessors, (447), 4 states have call successors, (4), 4 states have call predecessors, (4), 10 states have return successors, (12), 10 states have call predecessors, (12), 4 states have call successors, (12) [2022-11-25 22:28:39,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 408 states to 408 states and 463 transitions. [2022-11-25 22:28:39,365 INFO L78 Accepts]: Start accepts. Automaton has 408 states and 463 transitions. Word has length 53 [2022-11-25 22:28:39,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:28:39,365 INFO L495 AbstractCegarLoop]: Abstraction has 408 states and 463 transitions. [2022-11-25 22:28:39,365 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 14.666666666666666) internal successors, (44), 4 states have internal predecessors, (44), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 22:28:39,366 INFO L276 IsEmpty]: Start isEmpty. Operand 408 states and 463 transitions. [2022-11-25 22:28:39,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-11-25 22:28:39,366 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:28:39,367 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 22:28:39,390 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/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 (45)] Forceful destruction successful, exit code 0 [2022-11-25 22:28:39,591 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (46)] Forceful destruction successful, exit code 0 [2022-11-25 22:28:39,792 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Forceful destruction successful, exit code 0 [2022-11-25 22:28:39,985 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,46 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt,47 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 22:28:39,985 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting create_dataErr27REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_dataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-11-25 22:28:39,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:28:39,986 INFO L85 PathProgramCache]: Analyzing trace with hash 1556982671, now seen corresponding path program 1 times [2022-11-25 22:28:39,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-25 22:28:39,986 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1448851177] [2022-11-25 22:28:39,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:28:39,987 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 [2022-11-25 22:28:39,987 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/mathsat [2022-11-25 22:28:39,987 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/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) [2022-11-25 22:28:39,994 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/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 (48)] Waiting until timeout for monitored process [2022-11-25 22:28:40,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:28:40,610 INFO L263 TraceCheckSpWp]: Trace formula consists of 435 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-25 22:28:40,611 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:28:40,616 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 [2022-11-25 22:28:40,726 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-25 22:28:40,727 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 12 treesize of output 14 [2022-11-25 22:28:40,754 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-25 22:28:40,754 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 22:28:41,130 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-25 22:28:41,131 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-25 22:28:41,131 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1448851177] [2022-11-25 22:28:41,131 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1448851177] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 22:28:41,131 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1356611442] [2022-11-25 22:28:41,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:28:41,132 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-25 22:28:41,132 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/cvc4 [2022-11-25 22:28:41,139 INFO L229 MonitoredProcess]: Starting monitored process 49 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-25 22:28:41,140 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (49)] Waiting until timeout for monitored process [2022-11-25 22:28:42,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:28:42,344 INFO L263 TraceCheckSpWp]: Trace formula consists of 435 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-25 22:28:42,346 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:28:42,362 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 [2022-11-25 22:28:42,371 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 [2022-11-25 22:28:42,512 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:28:42,513 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 [2022-11-25 22:28:42,524 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-25 22:28:42,525 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 [2022-11-25 22:28:42,537 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-25 22:28:42,537 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 22:28:47,890 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-25 22:28:47,891 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1356611442] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 22:28:47,891 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1761009686] [2022-11-25 22:28:47,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:28:47,891 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 22:28:47,891 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 22:28:47,896 INFO L229 MonitoredProcess]: Starting monitored process 50 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 22:28:47,907 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process [2022-11-25 22:28:48,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:28:48,322 INFO L263 TraceCheckSpWp]: Trace formula consists of 435 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-25 22:28:48,323 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:28:48,339 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 [2022-11-25 22:28:48,445 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:28:48,446 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 [2022-11-25 22:28:48,463 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-25 22:28:48,463 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 [2022-11-25 22:28:48,473 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-25 22:28:48,473 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 22:28:48,932 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-25 22:28:48,932 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 63 [2022-11-25 22:28:51,209 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-25 22:28:51,209 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1761009686] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 22:28:51,209 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-25 22:28:51,209 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 4, 4, 4, 5, 5] total 11 [2022-11-25 22:28:51,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410706836] [2022-11-25 22:28:51,210 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-25 22:28:51,210 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-25 22:28:51,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-25 22:28:51,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-25 22:28:51,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=95, Unknown=2, NotChecked=0, Total=132 [2022-11-25 22:28:51,211 INFO L87 Difference]: Start difference. First operand 408 states and 463 transitions. Second operand has 12 states, 11 states have (on average 7.545454545454546) internal successors, (83), 12 states have internal predecessors, (83), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 22:28:53,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:28:53,227 INFO L93 Difference]: Finished difference Result 404 states and 455 transitions. [2022-11-25 22:28:53,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 22:28:53,228 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 7.545454545454546) internal successors, (83), 12 states have internal predecessors, (83), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2022-11-25 22:28:53,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:28:53,230 INFO L225 Difference]: With dead ends: 404 [2022-11-25 22:28:53,231 INFO L226 Difference]: Without dead ends: 404 [2022-11-25 22:28:53,231 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 313 GetRequests, 300 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 7.5s TimeCoverageRelationStatistics Valid=47, Invalid=107, Unknown=2, NotChecked=0, Total=156 [2022-11-25 22:28:53,232 INFO L413 NwaCegarLoop]: 122 mSDtfsCounter, 55 mSDsluCounter, 336 mSDsCounter, 0 mSdLazyCounter, 347 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 458 SdHoareTripleChecker+Invalid, 352 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 347 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-11-25 22:28:53,232 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 458 Invalid, 352 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 347 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-11-25 22:28:53,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 404 states. [2022-11-25 22:28:53,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 404 to 390. [2022-11-25 22:28:53,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 390 states, 344 states have (on average 1.2354651162790697) internal successors, (425), 375 states have internal predecessors, (425), 4 states have call successors, (4), 4 states have call predecessors, (4), 10 states have return successors, (12), 10 states have call predecessors, (12), 4 states have call successors, (12) [2022-11-25 22:28:53,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 390 states to 390 states and 441 transitions. [2022-11-25 22:28:53,241 INFO L78 Accepts]: Start accepts. Automaton has 390 states and 441 transitions. Word has length 53 [2022-11-25 22:28:53,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:28:53,241 INFO L495 AbstractCegarLoop]: Abstraction has 390 states and 441 transitions. [2022-11-25 22:28:53,242 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 7.545454545454546) internal successors, (83), 12 states have internal predecessors, (83), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 22:28:53,242 INFO L276 IsEmpty]: Start isEmpty. Operand 390 states and 441 transitions. [2022-11-25 22:28:53,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-11-25 22:28:53,242 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:28:53,243 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 22:28:53,261 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/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 (48)] Forceful destruction successful, exit code 0 [2022-11-25 22:28:53,470 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Forceful destruction successful, exit code 0 [2022-11-25 22:28:53,662 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (49)] Forceful destruction successful, exit code 0 [2022-11-25 22:28:53,856 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 48 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,50 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true,49 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt [2022-11-25 22:28:53,856 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_dataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-11-25 22:28:53,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:28:53,856 INFO L85 PathProgramCache]: Analyzing trace with hash -1319156755, now seen corresponding path program 1 times [2022-11-25 22:28:53,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-25 22:28:53,857 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [104821113] [2022-11-25 22:28:53,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:28:53,857 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 [2022-11-25 22:28:53,857 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/mathsat [2022-11-25 22:28:53,858 INFO L229 MonitoredProcess]: Starting monitored process 51 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/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) [2022-11-25 22:28:53,859 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/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 (51)] Waiting until timeout for monitored process [2022-11-25 22:28:54,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:28:54,360 INFO L263 TraceCheckSpWp]: Trace formula consists of 329 conjuncts, 25 conjunts are in the unsatisfiable core [2022-11-25 22:28:54,362 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:28:54,597 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 11 treesize of output 7 [2022-11-25 22:28:54,692 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 11 treesize of output 7 [2022-11-25 22:28:54,730 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-25 22:28:54,730 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 26 [2022-11-25 22:28:54,879 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 [2022-11-25 22:28:54,942 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-25 22:28:54,942 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 29 [2022-11-25 22:28:54,988 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-25 22:28:54,988 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 22:28:54,988 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-25 22:28:54,988 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [104821113] [2022-11-25 22:28:54,988 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [104821113] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:28:54,989 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 22:28:54,989 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-25 22:28:54,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433963224] [2022-11-25 22:28:54,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:28:54,989 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-25 22:28:54,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-25 22:28:54,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-25 22:28:54,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-11-25 22:28:54,990 INFO L87 Difference]: Start difference. First operand 390 states and 441 transitions. Second operand has 11 states, 10 states have (on average 4.6) internal successors, (46), 10 states have internal predecessors, (46), 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) [2022-11-25 22:28:57,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:28:57,377 INFO L93 Difference]: Finished difference Result 469 states and 541 transitions. [2022-11-25 22:28:57,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-25 22:28:57,377 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 4.6) internal successors, (46), 10 states have internal predecessors, (46), 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 54 [2022-11-25 22:28:57,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:28:57,379 INFO L225 Difference]: With dead ends: 469 [2022-11-25 22:28:57,380 INFO L226 Difference]: Without dead ends: 469 [2022-11-25 22:28:57,380 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=73, Invalid=233, Unknown=0, NotChecked=0, Total=306 [2022-11-25 22:28:57,380 INFO L413 NwaCegarLoop]: 90 mSDtfsCounter, 256 mSDsluCounter, 491 mSDsCounter, 0 mSdLazyCounter, 651 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 258 SdHoareTripleChecker+Valid, 581 SdHoareTripleChecker+Invalid, 666 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 651 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-11-25 22:28:57,380 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [258 Valid, 581 Invalid, 666 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 651 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-11-25 22:28:57,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 469 states. [2022-11-25 22:28:57,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 469 to 408. [2022-11-25 22:28:57,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 408 states, 362 states have (on average 1.2375690607734806) internal successors, (448), 393 states have internal predecessors, (448), 4 states have call successors, (4), 4 states have call predecessors, (4), 10 states have return successors, (12), 10 states have call predecessors, (12), 4 states have call successors, (12) [2022-11-25 22:28:57,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 408 states to 408 states and 464 transitions. [2022-11-25 22:28:57,391 INFO L78 Accepts]: Start accepts. Automaton has 408 states and 464 transitions. Word has length 54 [2022-11-25 22:28:57,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:28:57,391 INFO L495 AbstractCegarLoop]: Abstraction has 408 states and 464 transitions. [2022-11-25 22:28:57,391 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 4.6) internal successors, (46), 10 states have internal predecessors, (46), 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) [2022-11-25 22:28:57,392 INFO L276 IsEmpty]: Start isEmpty. Operand 408 states and 464 transitions. [2022-11-25 22:28:57,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-11-25 22:28:57,392 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:28:57,393 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 22:28:57,411 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/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 (51)] Ended with exit code 0 [2022-11-25 22:28:57,608 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/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 [2022-11-25 22:28:57,608 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr25REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_dataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-11-25 22:28:57,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:28:57,609 INFO L85 PathProgramCache]: Analyzing trace with hash -1319156754, now seen corresponding path program 1 times [2022-11-25 22:28:57,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-25 22:28:57,609 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1684650935] [2022-11-25 22:28:57,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:28:57,609 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 [2022-11-25 22:28:57,610 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/mathsat [2022-11-25 22:28:57,612 INFO L229 MonitoredProcess]: Starting monitored process 52 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/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) [2022-11-25 22:28:57,658 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/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 (52)] Waiting until timeout for monitored process [2022-11-25 22:28:58,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:28:58,188 INFO L263 TraceCheckSpWp]: Trace formula consists of 329 conjuncts, 33 conjunts are in the unsatisfiable core [2022-11-25 22:28:58,190 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:28:58,193 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 [2022-11-25 22:28:58,221 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-25 22:28:58,222 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 [2022-11-25 22:28:58,601 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-25 22:28:58,621 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-25 22:28:58,721 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-25 22:28:58,728 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-25 22:28:58,977 INFO L321 Elim1Store]: treesize reduction 29, result has 9.4 percent of original size [2022-11-25 22:28:58,978 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 63 treesize of output 37 [2022-11-25 22:28:58,996 INFO L321 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-11-25 22:28:58,997 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 16 [2022-11-25 22:28:59,042 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-25 22:28:59,042 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 22:28:59,042 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-25 22:28:59,042 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1684650935] [2022-11-25 22:28:59,043 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1684650935] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:28:59,043 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 22:28:59,043 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-25 22:28:59,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811903901] [2022-11-25 22:28:59,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:28:59,043 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-25 22:28:59,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-25 22:28:59,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-25 22:28:59,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-11-25 22:28:59,045 INFO L87 Difference]: Start difference. First operand 408 states and 464 transitions. Second operand has 12 states, 11 states have (on average 3.8181818181818183) internal successors, (42), 11 states have internal predecessors, (42), 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) [2022-11-25 22:29:02,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:29:02,298 INFO L93 Difference]: Finished difference Result 518 states and 574 transitions. [2022-11-25 22:29:02,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-25 22:29:02,300 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 3.8181818181818183) internal successors, (42), 11 states have internal predecessors, (42), 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 54 [2022-11-25 22:29:02,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:29:02,302 INFO L225 Difference]: With dead ends: 518 [2022-11-25 22:29:02,302 INFO L226 Difference]: Without dead ends: 518 [2022-11-25 22:29:02,303 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=82, Invalid=298, Unknown=0, NotChecked=0, Total=380 [2022-11-25 22:29:02,303 INFO L413 NwaCegarLoop]: 77 mSDtfsCounter, 393 mSDsluCounter, 525 mSDsCounter, 0 mSdLazyCounter, 688 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 393 SdHoareTripleChecker+Valid, 602 SdHoareTripleChecker+Invalid, 703 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 688 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-11-25 22:29:02,304 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [393 Valid, 602 Invalid, 703 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 688 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-11-25 22:29:02,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 518 states. [2022-11-25 22:29:02,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 518 to 408. [2022-11-25 22:29:02,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 408 states, 362 states have (on average 1.2320441988950277) internal successors, (446), 393 states have internal predecessors, (446), 4 states have call successors, (4), 4 states have call predecessors, (4), 10 states have return successors, (12), 10 states have call predecessors, (12), 4 states have call successors, (12) [2022-11-25 22:29:02,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 408 states to 408 states and 462 transitions. [2022-11-25 22:29:02,314 INFO L78 Accepts]: Start accepts. Automaton has 408 states and 462 transitions. Word has length 54 [2022-11-25 22:29:02,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:29:02,314 INFO L495 AbstractCegarLoop]: Abstraction has 408 states and 462 transitions. [2022-11-25 22:29:02,315 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 3.8181818181818183) internal successors, (42), 11 states have internal predecessors, (42), 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) [2022-11-25 22:29:02,315 INFO L276 IsEmpty]: Start isEmpty. Operand 408 states and 462 transitions. [2022-11-25 22:29:02,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-11-25 22:29:02,316 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:29:02,316 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 22:29:02,336 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/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 (52)] Forceful destruction successful, exit code 0 [2022-11-25 22:29:02,536 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/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 [2022-11-25 22:29:02,536 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_dataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-11-25 22:29:02,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:29:02,536 INFO L85 PathProgramCache]: Analyzing trace with hash 1610777395, now seen corresponding path program 1 times [2022-11-25 22:29:02,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-25 22:29:02,537 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2055623859] [2022-11-25 22:29:02,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:29:02,537 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 [2022-11-25 22:29:02,537 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/mathsat [2022-11-25 22:29:02,538 INFO L229 MonitoredProcess]: Starting monitored process 53 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/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) [2022-11-25 22:29:02,540 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/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 (53)] Waiting until timeout for monitored process [2022-11-25 22:29:03,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:29:03,295 INFO L263 TraceCheckSpWp]: Trace formula consists of 419 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-25 22:29:03,297 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:29:03,313 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 [2022-11-25 22:29:04,177 INFO L321 Elim1Store]: treesize reduction 123, result has 21.7 percent of original size [2022-11-25 22:29:04,177 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 8 case distinctions, treesize of input 34 treesize of output 56 [2022-11-25 22:29:04,247 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-25 22:29:04,247 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 22:29:06,432 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-25 22:29:06,433 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2055623859] [2022-11-25 22:29:06,433 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2055623859] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 22:29:06,433 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [252933860] [2022-11-25 22:29:06,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:29:06,434 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-25 22:29:06,434 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/cvc4 [2022-11-25 22:29:06,435 INFO L229 MonitoredProcess]: Starting monitored process 54 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-25 22:29:06,436 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (54)] Waiting until timeout for monitored process [2022-11-25 22:29:07,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:29:07,663 INFO L263 TraceCheckSpWp]: Trace formula consists of 419 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-25 22:29:07,666 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:29:07,671 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 [2022-11-25 22:29:07,708 WARN L859 $PredicateComparison]: unable to prove that (exists ((|create_data_#t~malloc7.base| (_ BitVec 32))) (and (exists ((v_ArrVal_4803 (_ BitVec 1)) (v_ArrVal_4804 (_ BitVec 1))) (= |c_#valid| (store (store |c_old(#valid)| c_create_data_~data~0.base v_ArrVal_4803) |create_data_#t~malloc7.base| v_ArrVal_4804))) (= (_ bv0 1) (select (store |c_old(#valid)| c_create_data_~data~0.base (_ bv1 1)) |create_data_#t~malloc7.base|)))) is different from true [2022-11-25 22:29:07,971 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_4803 (_ BitVec 1)) (v_ArrVal_4804 (_ BitVec 1)) (|create_data_#t~malloc7.base| (_ BitVec 32))) (and (= (_ bv0 1) (select (store |c_old(#valid)| c_create_data_~data~0.base (_ bv1 1)) |create_data_#t~malloc7.base|)) (= (store (store (store |c_old(#valid)| c_create_data_~data~0.base v_ArrVal_4803) |create_data_#t~malloc7.base| v_ArrVal_4804) c_create_data_~nextData~0.base (_ bv1 1)) |c_#valid|))) is different from true [2022-11-25 22:29:11,046 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 22:29:11,142 INFO L321 Elim1Store]: treesize reduction 91, result has 27.2 percent of original size [2022-11-25 22:29:11,142 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 5 case distinctions, treesize of input 29 treesize of output 53 [2022-11-25 22:29:11,164 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 1 not checked. [2022-11-25 22:29:11,164 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 22:29:12,698 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-25 22:29:12,698 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [252933860] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-25 22:29:12,698 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-25 22:29:12,698 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8, 7] total 15 [2022-11-25 22:29:12,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921438375] [2022-11-25 22:29:12,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:29:12,699 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-25 22:29:12,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-25 22:29:12,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-25 22:29:12,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=148, Unknown=3, NotChecked=54, Total=272 [2022-11-25 22:29:12,700 INFO L87 Difference]: Start difference. First operand 408 states and 462 transitions. Second operand has 6 states, 5 states have (on average 8.6) internal successors, (43), 6 states have internal predecessors, (43), 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) [2022-11-25 22:29:13,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:29:13,508 INFO L93 Difference]: Finished difference Result 428 states and 483 transitions. [2022-11-25 22:29:13,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 22:29:13,510 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 8.6) internal successors, (43), 6 states have internal predecessors, (43), 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 55 [2022-11-25 22:29:13,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:29:13,512 INFO L225 Difference]: With dead ends: 428 [2022-11-25 22:29:13,512 INFO L226 Difference]: Without dead ends: 428 [2022-11-25 22:29:13,512 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 146 SyntacticMatches, 3 SemanticMatches, 15 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 5.9s TimeCoverageRelationStatistics Valid=67, Invalid=148, Unknown=3, NotChecked=54, Total=272 [2022-11-25 22:29:13,513 INFO L413 NwaCegarLoop]: 80 mSDtfsCounter, 119 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 196 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 202 SdHoareTripleChecker+Invalid, 203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-25 22:29:13,513 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [119 Valid, 202 Invalid, 203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 196 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-25 22:29:13,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 428 states. [2022-11-25 22:29:13,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 428 to 406. [2022-11-25 22:29:13,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 406 states, 362 states have (on average 1.2265193370165746) internal successors, (444), 391 states have internal predecessors, (444), 4 states have call successors, (4), 4 states have call predecessors, (4), 10 states have return successors, (12), 10 states have call predecessors, (12), 4 states have call successors, (12) [2022-11-25 22:29:13,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 406 states to 406 states and 460 transitions. [2022-11-25 22:29:13,524 INFO L78 Accepts]: Start accepts. Automaton has 406 states and 460 transitions. Word has length 55 [2022-11-25 22:29:13,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:29:13,525 INFO L495 AbstractCegarLoop]: Abstraction has 406 states and 460 transitions. [2022-11-25 22:29:13,525 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 8.6) internal successors, (43), 6 states have internal predecessors, (43), 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) [2022-11-25 22:29:13,525 INFO L276 IsEmpty]: Start isEmpty. Operand 406 states and 460 transitions. [2022-11-25 22:29:13,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-11-25 22:29:13,526 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:29:13,526 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 22:29:13,540 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (54)] Forceful destruction successful, exit code 0 [2022-11-25 22:29:13,759 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/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 (53)] Forceful destruction successful, exit code 0 [2022-11-25 22:29:13,936 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt,53 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/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 [2022-11-25 22:29:13,936 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_dataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-11-25 22:29:13,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:29:13,936 INFO L85 PathProgramCache]: Analyzing trace with hash 1610777396, now seen corresponding path program 1 times [2022-11-25 22:29:13,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-25 22:29:13,937 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [593876779] [2022-11-25 22:29:13,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:29:13,937 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 [2022-11-25 22:29:13,937 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/mathsat [2022-11-25 22:29:13,938 INFO L229 MonitoredProcess]: Starting monitored process 55 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/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) [2022-11-25 22:29:13,939 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/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 (55)] Waiting until timeout for monitored process [2022-11-25 22:29:14,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:29:14,800 INFO L263 TraceCheckSpWp]: Trace formula consists of 419 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-25 22:29:14,803 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:29:14,807 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 [2022-11-25 22:29:14,814 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 [2022-11-25 22:29:15,371 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_5001 (_ BitVec 32)) (v_ArrVal_5000 (_ BitVec 32)) (create_data_~data~0.base (_ BitVec 32)) (create_data_~nextData~0.base (_ BitVec 32)) (|create_data_#t~malloc7.base| (_ BitVec 32))) (and (= |c_#length| (store (store (store |c_old(#length)| create_data_~data~0.base v_ArrVal_5000) |create_data_#t~malloc7.base| v_ArrVal_5001) create_data_~nextData~0.base (_ bv16 32))) (= (select |c_old(#valid)| create_data_~data~0.base) (_ bv0 1)) (= (_ bv0 1) (select (store |c_old(#valid)| create_data_~data~0.base (_ bv1 1)) |create_data_#t~malloc7.base|)))) is different from true [2022-11-25 22:29:15,630 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:29:15,632 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:29:15,634 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:29:15,723 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-11-25 22:29:15,723 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 18 treesize of output 36 [2022-11-25 22:29:15,774 INFO L321 Elim1Store]: treesize reduction 22, result has 29.0 percent of original size [2022-11-25 22:29:15,775 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 22 treesize of output 24 [2022-11-25 22:29:15,837 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 1 not checked. [2022-11-25 22:29:15,837 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 22:29:16,216 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-25 22:29:16,216 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [593876779] [2022-11-25 22:29:16,216 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [593876779] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 22:29:16,216 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [417950046] [2022-11-25 22:29:16,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:29:16,217 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-25 22:29:16,217 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/cvc4 [2022-11-25 22:29:16,218 INFO L229 MonitoredProcess]: Starting monitored process 56 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-25 22:29:16,219 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (56)] Waiting until timeout for monitored process [2022-11-25 22:29:17,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:29:17,955 INFO L263 TraceCheckSpWp]: Trace formula consists of 419 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-25 22:29:17,958 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:29:17,999 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 [2022-11-25 22:29:18,007 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 [2022-11-25 22:29:18,156 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_5199 (_ BitVec 32)) (v_ArrVal_5198 (_ BitVec 32)) (create_data_~data~0.base (_ BitVec 32)) (|create_data_#t~malloc7.base| (_ BitVec 32))) (and (= (select |c_old(#valid)| create_data_~data~0.base) (_ bv0 1)) (= (_ bv0 1) (select (store |c_old(#valid)| create_data_~data~0.base (_ bv1 1)) |create_data_#t~malloc7.base|)) (= (store (store |c_old(#length)| create_data_~data~0.base v_ArrVal_5199) |create_data_#t~malloc7.base| v_ArrVal_5198) |c_#length|))) is different from true [2022-11-25 22:29:18,618 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_5199 (_ BitVec 32)) (v_ArrVal_5198 (_ BitVec 32)) (create_data_~data~0.base (_ BitVec 32)) (create_data_~nextData~0.base (_ BitVec 32)) (|create_data_#t~malloc7.base| (_ BitVec 32))) (and (= (select |c_old(#valid)| create_data_~data~0.base) (_ bv0 1)) (= (_ bv0 1) (select (store |c_old(#valid)| create_data_~data~0.base (_ bv1 1)) |create_data_#t~malloc7.base|)) (= (store (store (store |c_old(#length)| create_data_~data~0.base v_ArrVal_5199) |create_data_#t~malloc7.base| v_ArrVal_5198) create_data_~nextData~0.base (_ bv16 32)) |c_#length|))) is different from true [2022-11-25 22:29:18,839 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:29:18,841 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:29:18,843 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:29:18,924 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-11-25 22:29:18,924 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 18 treesize of output 36 [2022-11-25 22:29:18,976 INFO L321 Elim1Store]: treesize reduction 22, result has 29.0 percent of original size [2022-11-25 22:29:18,976 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 22 treesize of output 24 [2022-11-25 22:29:18,999 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 1 not checked. [2022-11-25 22:29:19,000 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 22:29:21,815 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [417950046] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 22:29:21,815 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [82856061] [2022-11-25 22:29:21,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:29:21,815 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 22:29:21,815 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 22:29:21,816 INFO L229 MonitoredProcess]: Starting monitored process 57 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 22:29:21,819 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Waiting until timeout for monitored process [2022-11-25 22:29:22,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:29:22,366 INFO L263 TraceCheckSpWp]: Trace formula consists of 419 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-25 22:29:22,370 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:29:22,374 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 [2022-11-25 22:29:22,577 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 13 treesize of output 9 [2022-11-25 22:29:22,909 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-25 22:29:22,909 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 43 [2022-11-25 22:29:23,029 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-25 22:29:23,030 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 43 [2022-11-25 22:29:23,103 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 30 treesize of output 18 [2022-11-25 22:29:23,122 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_5398 (_ BitVec 32)) (v_ArrVal_5397 (_ BitVec 32)) (v_arrayElimCell_191 (_ BitVec 32)) (create_data_~data~0.base (_ BitVec 32))) (and (= (select |c_old(#valid)| create_data_~data~0.base) (_ bv0 1)) (= (_ bv0 1) (select (store |c_old(#valid)| create_data_~data~0.base (_ bv1 1)) v_arrayElimCell_191)) (= (store (store |c_old(#length)| create_data_~data~0.base v_ArrVal_5398) v_arrayElimCell_191 v_ArrVal_5397) |c_#length|))) is different from true [2022-11-25 22:29:23,378 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_5398 (_ BitVec 32)) (v_ArrVal_5397 (_ BitVec 32)) (v_arrayElimCell_191 (_ BitVec 32)) (create_data_~data~0.base (_ BitVec 32)) (create_data_~nextData~0.base (_ BitVec 32))) (and (= (select |c_old(#valid)| create_data_~data~0.base) (_ bv0 1)) (= (_ bv0 1) (select (store |c_old(#valid)| create_data_~data~0.base (_ bv1 1)) v_arrayElimCell_191)) (= (store (store (store |c_old(#length)| create_data_~data~0.base v_ArrVal_5398) v_arrayElimCell_191 v_ArrVal_5397) create_data_~nextData~0.base (_ bv16 32)) |c_#length|))) is different from true [2022-11-25 22:29:23,611 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:29:23,613 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:29:23,615 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:29:23,709 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-11-25 22:29:23,710 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 18 treesize of output 36 [2022-11-25 22:29:23,778 INFO L321 Elim1Store]: treesize reduction 22, result has 29.0 percent of original size [2022-11-25 22:29:23,778 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 22 treesize of output 24 [2022-11-25 22:29:23,808 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 10 not checked. [2022-11-25 22:29:23,808 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 22:29:32,298 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [82856061] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 22:29:32,298 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 22:29:32,298 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8, 10] total 16 [2022-11-25 22:29:32,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126784548] [2022-11-25 22:29:32,299 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 22:29:32,299 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-25 22:29:32,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-25 22:29:32,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-25 22:29:32,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=197, Unknown=10, NotChecked=160, Total=420 [2022-11-25 22:29:32,300 INFO L87 Difference]: Start difference. First operand 406 states and 460 transitions. Second operand has 17 states, 16 states have (on average 7.25) internal successors, (116), 16 states have internal predecessors, (116), 1 states have call successors, (1), 1 states have call predecessors, (1), 3 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-25 22:29:33,944 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_5398 (_ BitVec 32)) (v_ArrVal_5397 (_ BitVec 32)) (v_arrayElimCell_191 (_ BitVec 32)) (create_data_~data~0.base (_ BitVec 32)) (create_data_~nextData~0.base (_ BitVec 32))) (and (= (select |c_old(#valid)| create_data_~data~0.base) (_ bv0 1)) (= (_ bv0 1) (select (store |c_old(#valid)| create_data_~data~0.base (_ bv1 1)) v_arrayElimCell_191)) (= (store (store (store |c_old(#length)| create_data_~data~0.base v_ArrVal_5398) v_arrayElimCell_191 v_ArrVal_5397) create_data_~nextData~0.base (_ bv16 32)) |c_#length|))) (exists ((v_ArrVal_5001 (_ BitVec 32)) (v_ArrVal_5000 (_ BitVec 32)) (create_data_~data~0.base (_ BitVec 32)) (create_data_~nextData~0.base (_ BitVec 32)) (|create_data_#t~malloc7.base| (_ BitVec 32))) (and (= |c_#length| (store (store (store |c_old(#length)| create_data_~data~0.base v_ArrVal_5000) |create_data_#t~malloc7.base| v_ArrVal_5001) create_data_~nextData~0.base (_ bv16 32))) (= (select |c_old(#valid)| create_data_~data~0.base) (_ bv0 1)) (= (_ bv0 1) (select (store |c_old(#valid)| create_data_~data~0.base (_ bv1 1)) |create_data_#t~malloc7.base|)))) (exists ((v_ArrVal_5199 (_ BitVec 32)) (v_ArrVal_5198 (_ BitVec 32)) (create_data_~data~0.base (_ BitVec 32)) (create_data_~nextData~0.base (_ BitVec 32)) (|create_data_#t~malloc7.base| (_ BitVec 32))) (and (= (select |c_old(#valid)| create_data_~data~0.base) (_ bv0 1)) (= (_ bv0 1) (select (store |c_old(#valid)| create_data_~data~0.base (_ bv1 1)) |create_data_#t~malloc7.base|)) (= (store (store (store |c_old(#length)| create_data_~data~0.base v_ArrVal_5199) |create_data_#t~malloc7.base| v_ArrVal_5198) create_data_~nextData~0.base (_ bv16 32)) |c_#length|)))) is different from true [2022-11-25 22:29:36,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:29:36,798 INFO L93 Difference]: Finished difference Result 737 states and 813 transitions. [2022-11-25 22:29:36,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-25 22:29:36,798 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 7.25) internal successors, (116), 16 states have internal predecessors, (116), 1 states have call successors, (1), 1 states have call predecessors, (1), 3 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 55 [2022-11-25 22:29:36,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:29:36,800 INFO L225 Difference]: With dead ends: 737 [2022-11-25 22:29:36,800 INFO L226 Difference]: Without dead ends: 737 [2022-11-25 22:29:36,801 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 149 SyntacticMatches, 3 SemanticMatches, 23 ConstructedPredicates, 6 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 12.3s TimeCoverageRelationStatistics Valid=76, Invalid=279, Unknown=11, NotChecked=234, Total=600 [2022-11-25 22:29:36,801 INFO L413 NwaCegarLoop]: 128 mSDtfsCounter, 422 mSDsluCounter, 791 mSDsCounter, 0 mSdLazyCounter, 818 mSolverCounterSat, 26 mSolverCounterUnsat, 53 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 422 SdHoareTripleChecker+Valid, 919 SdHoareTripleChecker+Invalid, 2516 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 818 IncrementalHoareTripleChecker+Invalid, 53 IncrementalHoareTripleChecker+Unknown, 1619 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2022-11-25 22:29:36,801 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [422 Valid, 919 Invalid, 2516 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 818 Invalid, 53 Unknown, 1619 Unchecked, 3.6s Time] [2022-11-25 22:29:36,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 737 states. [2022-11-25 22:29:36,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 737 to 389. [2022-11-25 22:29:36,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 389 states, 348 states have (on average 1.2155172413793103) internal successors, (423), 377 states have internal predecessors, (423), 4 states have call successors, (4), 4 states have call predecessors, (4), 7 states have return successors, (10), 7 states have call predecessors, (10), 4 states have call successors, (10) [2022-11-25 22:29:36,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 389 states to 389 states and 437 transitions. [2022-11-25 22:29:36,815 INFO L78 Accepts]: Start accepts. Automaton has 389 states and 437 transitions. Word has length 55 [2022-11-25 22:29:36,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:29:36,815 INFO L495 AbstractCegarLoop]: Abstraction has 389 states and 437 transitions. [2022-11-25 22:29:36,815 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 7.25) internal successors, (116), 16 states have internal predecessors, (116), 1 states have call successors, (1), 1 states have call predecessors, (1), 3 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-25 22:29:36,816 INFO L276 IsEmpty]: Start isEmpty. Operand 389 states and 437 transitions. [2022-11-25 22:29:36,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-11-25 22:29:36,816 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:29:36,817 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 22:29:36,837 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/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 (55)] Ended with exit code 0 [2022-11-25 22:29:37,050 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (56)] Forceful destruction successful, exit code 0 [2022-11-25 22:29:37,241 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Forceful destruction successful, exit code 0 [2022-11-25 22:29:37,434 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 55 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,56 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt,57 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 22:29:37,434 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr51ASSERT_VIOLATIONMEMORY_LEAK === [create_dataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-11-25 22:29:37,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:29:37,434 INFO L85 PathProgramCache]: Analyzing trace with hash -1897094198, now seen corresponding path program 1 times [2022-11-25 22:29:37,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-25 22:29:37,435 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [549803928] [2022-11-25 22:29:37,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:29:37,435 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 [2022-11-25 22:29:37,435 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/mathsat [2022-11-25 22:29:37,436 INFO L229 MonitoredProcess]: Starting monitored process 58 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/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) [2022-11-25 22:29:37,437 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/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 (58)] Waiting until timeout for monitored process [2022-11-25 22:29:37,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:29:37,856 INFO L263 TraceCheckSpWp]: Trace formula consists of 331 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-25 22:29:37,857 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:29:37,965 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-25 22:29:38,000 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 16 treesize of output 8 [2022-11-25 22:29:38,012 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-25 22:29:38,012 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 22:29:38,013 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-25 22:29:38,013 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [549803928] [2022-11-25 22:29:38,013 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [549803928] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:29:38,013 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 22:29:38,013 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-25 22:29:38,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1950823514] [2022-11-25 22:29:38,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:29:38,014 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 22:29:38,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-25 22:29:38,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 22:29:38,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-25 22:29:38,015 INFO L87 Difference]: Start difference. First operand 389 states and 437 transitions. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 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) [2022-11-25 22:29:38,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:29:38,505 INFO L93 Difference]: Finished difference Result 427 states and 475 transitions. [2022-11-25 22:29:38,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 22:29:38,506 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 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 57 [2022-11-25 22:29:38,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:29:38,507 INFO L225 Difference]: With dead ends: 427 [2022-11-25 22:29:38,507 INFO L226 Difference]: Without dead ends: 427 [2022-11-25 22:29:38,508 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-25 22:29:38,508 INFO L413 NwaCegarLoop]: 109 mSDtfsCounter, 151 mSDsluCounter, 244 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 353 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-25 22:29:38,508 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [152 Valid, 353 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-25 22:29:38,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 427 states. [2022-11-25 22:29:38,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 427 to 391. [2022-11-25 22:29:38,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 391 states, 350 states have (on average 1.2142857142857142) internal successors, (425), 379 states have internal predecessors, (425), 4 states have call successors, (4), 4 states have call predecessors, (4), 7 states have return successors, (10), 7 states have call predecessors, (10), 4 states have call successors, (10) [2022-11-25 22:29:38,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 439 transitions. [2022-11-25 22:29:38,515 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 439 transitions. Word has length 57 [2022-11-25 22:29:38,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:29:38,516 INFO L495 AbstractCegarLoop]: Abstraction has 391 states and 439 transitions. [2022-11-25 22:29:38,516 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 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) [2022-11-25 22:29:38,516 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 439 transitions. [2022-11-25 22:29:38,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-11-25 22:29:38,517 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:29:38,517 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 22:29:38,531 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/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 (58)] Forceful destruction successful, exit code 0 [2022-11-25 22:29:38,731 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 58 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/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 [2022-11-25 22:29:38,731 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr30REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_dataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-11-25 22:29:38,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:29:38,731 INFO L85 PathProgramCache]: Analyzing trace with hash -1897093746, now seen corresponding path program 1 times [2022-11-25 22:29:38,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-25 22:29:38,732 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [588418447] [2022-11-25 22:29:38,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:29:38,732 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 [2022-11-25 22:29:38,732 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/mathsat [2022-11-25 22:29:38,733 INFO L229 MonitoredProcess]: Starting monitored process 59 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/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) [2022-11-25 22:29:38,734 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/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 (59)] Waiting until timeout for monitored process [2022-11-25 22:29:39,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:29:39,189 INFO L263 TraceCheckSpWp]: Trace formula consists of 333 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-25 22:29:39,190 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:29:39,282 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 11 treesize of output 7 [2022-11-25 22:29:39,326 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 19 treesize of output 11 [2022-11-25 22:29:39,342 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-25 22:29:39,342 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 22:29:39,342 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-25 22:29:39,342 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [588418447] [2022-11-25 22:29:39,342 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [588418447] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:29:39,342 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 22:29:39,342 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-25 22:29:39,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306235708] [2022-11-25 22:29:39,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:29:39,343 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-25 22:29:39,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-25 22:29:39,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-25 22:29:39,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-25 22:29:39,344 INFO L87 Difference]: Start difference. First operand 391 states and 439 transitions. Second operand has 6 states, 5 states have (on average 9.0) internal successors, (45), 6 states have internal predecessors, (45), 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) [2022-11-25 22:29:40,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:29:40,204 INFO L93 Difference]: Finished difference Result 409 states and 457 transitions. [2022-11-25 22:29:40,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-25 22:29:40,205 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 9.0) internal successors, (45), 6 states have internal predecessors, (45), 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 57 [2022-11-25 22:29:40,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:29:40,206 INFO L225 Difference]: With dead ends: 409 [2022-11-25 22:29:40,206 INFO L226 Difference]: Without dead ends: 409 [2022-11-25 22:29:40,206 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-11-25 22:29:40,206 INFO L413 NwaCegarLoop]: 105 mSDtfsCounter, 118 mSDsluCounter, 233 mSDsCounter, 0 mSdLazyCounter, 223 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 338 SdHoareTripleChecker+Invalid, 228 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-25 22:29:40,206 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [118 Valid, 338 Invalid, 228 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 223 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-25 22:29:40,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 409 states. [2022-11-25 22:29:40,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 409 to 393. [2022-11-25 22:29:40,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 393 states, 352 states have (on average 1.2159090909090908) internal successors, (428), 381 states have internal predecessors, (428), 4 states have call successors, (4), 4 states have call predecessors, (4), 7 states have return successors, (10), 7 states have call predecessors, (10), 4 states have call successors, (10) [2022-11-25 22:29:40,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393 states to 393 states and 442 transitions. [2022-11-25 22:29:40,235 INFO L78 Accepts]: Start accepts. Automaton has 393 states and 442 transitions. Word has length 57 [2022-11-25 22:29:40,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:29:40,235 INFO L495 AbstractCegarLoop]: Abstraction has 393 states and 442 transitions. [2022-11-25 22:29:40,235 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 9.0) internal successors, (45), 6 states have internal predecessors, (45), 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) [2022-11-25 22:29:40,236 INFO L276 IsEmpty]: Start isEmpty. Operand 393 states and 442 transitions. [2022-11-25 22:29:40,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-11-25 22:29:40,236 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:29:40,236 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 22:29:40,256 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/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 (59)] Forceful destruction successful, exit code 0 [2022-11-25 22:29:40,451 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/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 [2022-11-25 22:29:40,451 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr31REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_dataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-11-25 22:29:40,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:29:40,452 INFO L85 PathProgramCache]: Analyzing trace with hash -1897093745, now seen corresponding path program 1 times [2022-11-25 22:29:40,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-25 22:29:40,452 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1444607515] [2022-11-25 22:29:40,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:29:40,452 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 [2022-11-25 22:29:40,452 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/mathsat [2022-11-25 22:29:40,453 INFO L229 MonitoredProcess]: Starting monitored process 60 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/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) [2022-11-25 22:29:40,454 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/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 (60)] Waiting until timeout for monitored process [2022-11-25 22:29:41,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:29:41,083 INFO L263 TraceCheckSpWp]: Trace formula consists of 333 conjuncts, 29 conjunts are in the unsatisfiable core [2022-11-25 22:29:41,087 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:29:41,100 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 [2022-11-25 22:29:41,112 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 [2022-11-25 22:29:41,324 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 13 treesize of output 9 [2022-11-25 22:29:41,389 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 9 [2022-11-25 22:29:41,404 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_5771 (_ BitVec 32)) (create_data_~data~0.base (_ BitVec 32)) (v_arrayElimCell_198 (_ BitVec 32))) (and (= (select |c_old(#valid)| create_data_~data~0.base) (_ bv0 1)) (= (store (store |c_old(#length)| create_data_~data~0.base v_ArrVal_5771) v_arrayElimCell_198 (_ bv80 32)) |c_#length|))) is different from true [2022-11-25 22:29:41,711 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:29:41,777 INFO L321 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2022-11-25 22:29:41,777 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 2 case distinctions, treesize of input 15 treesize of output 27 [2022-11-25 22:29:41,815 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-25 22:29:41,815 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 [2022-11-25 22:29:41,965 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 11 treesize of output 7 [2022-11-25 22:29:41,980 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 11 treesize of output 7 [2022-11-25 22:29:42,232 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 33 treesize of output 21 [2022-11-25 22:29:42,245 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 [2022-11-25 22:29:42,309 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 5 not checked. [2022-11-25 22:29:42,309 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 22:29:42,640 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 40 treesize of output 32 [2022-11-25 22:29:42,669 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:29:42,671 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:29:42,677 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:29:42,679 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:29:47,489 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-25 22:29:47,490 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1444607515] [2022-11-25 22:29:47,490 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1444607515] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 22:29:47,490 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1439742272] [2022-11-25 22:29:47,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:29:47,490 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-25 22:29:47,490 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/cvc4 [2022-11-25 22:29:47,492 INFO L229 MonitoredProcess]: Starting monitored process 61 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-25 22:29:47,496 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (61)] Waiting until timeout for monitored process [2022-11-25 22:29:48,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:29:48,522 INFO L263 TraceCheckSpWp]: Trace formula consists of 333 conjuncts, 26 conjunts are in the unsatisfiable core [2022-11-25 22:29:48,524 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:29:49,178 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-25 22:29:49,345 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 11 treesize of output 7 [2022-11-25 22:29:49,361 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:29:49,361 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 19 [2022-11-25 22:29:49,524 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 [2022-11-25 22:29:49,673 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-25 22:29:49,673 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 14 [2022-11-25 22:29:49,820 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-25 22:29:49,820 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 22:29:49,820 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1439742272] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:29:49,820 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 22:29:49,820 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [9] total 20 [2022-11-25 22:29:49,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806817553] [2022-11-25 22:29:49,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:29:49,821 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-25 22:29:49,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-25 22:29:49,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-25 22:29:49,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=457, Unknown=1, NotChecked=42, Total=552 [2022-11-25 22:29:49,822 INFO L87 Difference]: Start difference. First operand 393 states and 442 transitions. Second operand has 12 states, 12 states have (on average 3.75) internal successors, (45), 11 states have internal predecessors, (45), 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) [2022-11-25 22:29:54,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:29:54,789 INFO L93 Difference]: Finished difference Result 512 states and 577 transitions. [2022-11-25 22:29:54,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-25 22:29:54,790 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.75) internal successors, (45), 11 states have internal predecessors, (45), 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 57 [2022-11-25 22:29:54,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:29:54,791 INFO L225 Difference]: With dead ends: 512 [2022-11-25 22:29:54,791 INFO L226 Difference]: Without dead ends: 512 [2022-11-25 22:29:54,791 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 7.9s TimeCoverageRelationStatistics Valid=142, Invalid=983, Unknown=1, NotChecked=64, Total=1190 [2022-11-25 22:29:54,792 INFO L413 NwaCegarLoop]: 93 mSDtfsCounter, 447 mSDsluCounter, 691 mSDsCounter, 0 mSdLazyCounter, 543 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 447 SdHoareTripleChecker+Valid, 784 SdHoareTripleChecker+Invalid, 560 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 543 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-11-25 22:29:54,792 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [447 Valid, 784 Invalid, 560 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 543 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2022-11-25 22:29:54,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 512 states. [2022-11-25 22:29:54,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 512 to 393. [2022-11-25 22:29:54,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 393 states, 352 states have (on average 1.2102272727272727) internal successors, (426), 381 states have internal predecessors, (426), 4 states have call successors, (4), 4 states have call predecessors, (4), 7 states have return successors, (10), 7 states have call predecessors, (10), 4 states have call successors, (10) [2022-11-25 22:29:54,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393 states to 393 states and 440 transitions. [2022-11-25 22:29:54,801 INFO L78 Accepts]: Start accepts. Automaton has 393 states and 440 transitions. Word has length 57 [2022-11-25 22:29:54,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:29:54,801 INFO L495 AbstractCegarLoop]: Abstraction has 393 states and 440 transitions. [2022-11-25 22:29:54,801 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.75) internal successors, (45), 11 states have internal predecessors, (45), 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) [2022-11-25 22:29:54,801 INFO L276 IsEmpty]: Start isEmpty. Operand 393 states and 440 transitions. [2022-11-25 22:29:54,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-11-25 22:29:54,802 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:29:54,802 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 22:29:54,817 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (61)] Forceful destruction successful, exit code 0 [2022-11-25 22:29:55,023 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/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 (60)] Forceful destruction successful, exit code 0 [2022-11-25 22:29:55,212 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 61 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt,60 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/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 [2022-11-25 22:29:55,212 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_dataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-11-25 22:29:55,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:29:55,212 INFO L85 PathProgramCache]: Analyzing trace with hash 1768854146, now seen corresponding path program 1 times [2022-11-25 22:29:55,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-25 22:29:55,213 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1652439156] [2022-11-25 22:29:55,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:29:55,213 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 [2022-11-25 22:29:55,213 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/mathsat [2022-11-25 22:29:55,214 INFO L229 MonitoredProcess]: Starting monitored process 62 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/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) [2022-11-25 22:29:55,215 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/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 (62)] Waiting until timeout for monitored process [2022-11-25 22:29:55,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:29:55,959 INFO L263 TraceCheckSpWp]: Trace formula consists of 433 conjuncts, 25 conjunts are in the unsatisfiable core [2022-11-25 22:29:55,962 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:29:55,992 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 [2022-11-25 22:29:56,086 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 7 treesize of output 5 [2022-11-25 22:29:56,230 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 13 treesize of output 9 [2022-11-25 22:29:56,381 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 7 treesize of output 3 [2022-11-25 22:30:01,542 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:30:01,651 INFO L321 Elim1Store]: treesize reduction 82, result has 29.3 percent of original size [2022-11-25 22:30:01,651 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 5 case distinctions, treesize of input 25 treesize of output 49 [2022-11-25 22:30:01,788 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-25 22:30:01,788 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 22:30:02,043 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-25 22:30:02,043 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1652439156] [2022-11-25 22:30:02,043 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1652439156] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 22:30:02,043 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1731923025] [2022-11-25 22:30:02,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:30:02,044 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-25 22:30:02,044 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/cvc4 [2022-11-25 22:30:02,045 INFO L229 MonitoredProcess]: Starting monitored process 63 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-25 22:30:02,046 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (63)] Waiting until timeout for monitored process [2022-11-25 22:30:03,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:30:03,615 INFO L263 TraceCheckSpWp]: Trace formula consists of 433 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-25 22:30:03,618 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:30:05,776 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 7 treesize of output 5 [2022-11-25 22:30:07,088 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:30:07,098 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:30:07,106 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:30:07,184 INFO L321 Elim1Store]: treesize reduction 39, result has 40.0 percent of original size [2022-11-25 22:30:07,185 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 20 treesize of output 45 [2022-11-25 22:30:07,303 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-25 22:30:07,304 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 22:30:07,598 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1731923025] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 22:30:07,598 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [653194833] [2022-11-25 22:30:07,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:30:07,598 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 22:30:07,598 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 22:30:07,599 INFO L229 MonitoredProcess]: Starting monitored process 64 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 22:30:07,603 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Waiting until timeout for monitored process [2022-11-25 22:30:08,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:30:08,242 INFO L263 TraceCheckSpWp]: Trace formula consists of 433 conjuncts, 26 conjunts are in the unsatisfiable core [2022-11-25 22:30:08,245 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:30:08,248 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 [2022-11-25 22:30:08,308 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-25 22:30:08,308 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 24 [2022-11-25 22:30:08,534 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 13 treesize of output 9 [2022-11-25 22:30:08,820 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-25 22:30:08,821 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 43 [2022-11-25 22:30:08,921 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-25 22:30:08,921 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 43 [2022-11-25 22:30:08,974 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 30 treesize of output 18 [2022-11-25 22:30:17,715 INFO L321 Elim1Store]: treesize reduction 153, result has 18.2 percent of original size [2022-11-25 22:30:17,715 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 11 case distinctions, treesize of input 47 treesize of output 67 [2022-11-25 22:30:17,902 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-25 22:30:17,902 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 22:30:28,332 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [653194833] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 22:30:28,333 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 22:30:28,333 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 11] total 28 [2022-11-25 22:30:28,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314936312] [2022-11-25 22:30:28,333 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 22:30:28,333 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-11-25 22:30:28,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-25 22:30:28,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-11-25 22:30:28,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=861, Unknown=18, NotChecked=0, Total=992 [2022-11-25 22:30:28,334 INFO L87 Difference]: Start difference. First operand 393 states and 440 transitions. Second operand has 29 states, 28 states have (on average 5.0) internal successors, (140), 29 states have internal predecessors, (140), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-25 22:30:30,843 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 22:30:35,334 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 22:30:39,802 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 22:30:44,380 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 22:30:46,407 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 22:30:51,110 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 22:30:53,149 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 22:30:55,157 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 22:30:57,164 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 22:30:59,245 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 22:31:01,284 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 22:31:03,293 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 22:31:05,302 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 22:31:07,311 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 22:31:09,341 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 22:31:11,362 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 22:31:13,369 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 22:31:15,377 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 22:31:17,384 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 22:31:19,396 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 22:31:21,470 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 22:31:23,541 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 22:31:25,601 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 22:31:27,620 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 22:31:29,629 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 22:31:41,506 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 22:31:43,539 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 22:31:45,732 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 22:31:47,751 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 22:31:49,919 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 22:31:52,410 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 22:31:59,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:31:59,501 INFO L93 Difference]: Finished difference Result 517 states and 580 transitions. [2022-11-25 22:31:59,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-25 22:31:59,503 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 28 states have (on average 5.0) internal successors, (140), 29 states have internal predecessors, (140), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 57 [2022-11-25 22:31:59,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:31:59,505 INFO L225 Difference]: With dead ends: 517 [2022-11-25 22:31:59,505 INFO L226 Difference]: Without dead ends: 517 [2022-11-25 22:31:59,506 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 150 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 508 ImplicationChecksByTransitivity, 46.5s TimeCoverageRelationStatistics Valid=270, Invalid=1582, Unknown=40, NotChecked=0, Total=1892 [2022-11-25 22:31:59,506 INFO L413 NwaCegarLoop]: 73 mSDtfsCounter, 1152 mSDsluCounter, 572 mSDsCounter, 0 mSdLazyCounter, 815 mSolverCounterSat, 129 mSolverCounterUnsat, 299 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 70.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1152 SdHoareTripleChecker+Valid, 645 SdHoareTripleChecker+Invalid, 1243 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 129 IncrementalHoareTripleChecker+Valid, 815 IncrementalHoareTripleChecker+Invalid, 299 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 70.7s IncrementalHoareTripleChecker+Time [2022-11-25 22:31:59,506 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1152 Valid, 645 Invalid, 1243 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [129 Valid, 815 Invalid, 299 Unknown, 0 Unchecked, 70.7s Time] [2022-11-25 22:31:59,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 517 states. [2022-11-25 22:31:59,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 517 to 409. [2022-11-25 22:31:59,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 409 states, 367 states have (on average 1.20708446866485) internal successors, (443), 396 states have internal predecessors, (443), 4 states have call successors, (4), 4 states have call predecessors, (4), 8 states have return successors, (12), 8 states have call predecessors, (12), 4 states have call successors, (12) [2022-11-25 22:31:59,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 409 states to 409 states and 459 transitions. [2022-11-25 22:31:59,515 INFO L78 Accepts]: Start accepts. Automaton has 409 states and 459 transitions. Word has length 57 [2022-11-25 22:31:59,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:31:59,515 INFO L495 AbstractCegarLoop]: Abstraction has 409 states and 459 transitions. [2022-11-25 22:31:59,515 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 28 states have (on average 5.0) internal successors, (140), 29 states have internal predecessors, (140), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-25 22:31:59,516 INFO L276 IsEmpty]: Start isEmpty. Operand 409 states and 459 transitions. [2022-11-25 22:31:59,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-11-25 22:31:59,516 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:31:59,516 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 22:31:59,527 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Forceful destruction successful, exit code 0 [2022-11-25 22:31:59,735 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (63)] Forceful destruction successful, exit code 0 [2022-11-25 22:31:59,938 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/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 (62)] Forceful destruction successful, exit code 0 [2022-11-25 22:32:00,127 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 64 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true,63 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt,62 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/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 [2022-11-25 22:32:00,127 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_dataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-11-25 22:32:00,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:32:00,128 INFO L85 PathProgramCache]: Analyzing trace with hash 1768854147, now seen corresponding path program 1 times [2022-11-25 22:32:00,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-25 22:32:00,128 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1369862339] [2022-11-25 22:32:00,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:32:00,129 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 [2022-11-25 22:32:00,129 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/mathsat [2022-11-25 22:32:00,130 INFO L229 MonitoredProcess]: Starting monitored process 65 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/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) [2022-11-25 22:32:00,144 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/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 (65)] Waiting until timeout for monitored process [2022-11-25 22:32:00,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:32:00,924 INFO L263 TraceCheckSpWp]: Trace formula consists of 433 conjuncts, 27 conjunts are in the unsatisfiable core [2022-11-25 22:32:00,927 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:32:00,965 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 [2022-11-25 22:32:01,090 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 5 treesize of output 3 [2022-11-25 22:32:01,095 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 7 treesize of output 5 [2022-11-25 22:32:01,246 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 13 treesize of output 9 [2022-11-25 22:32:01,536 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-25 22:32:01,536 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 51 treesize of output 50 [2022-11-25 22:32:01,651 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 39 treesize of output 21 [2022-11-25 22:32:02,797 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:32:02,799 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:32:02,801 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:32:02,903 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-11-25 22:32:02,903 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 20 treesize of output 38 [2022-11-25 22:32:02,929 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:32:02,957 INFO L321 Elim1Store]: treesize reduction 17, result has 19.0 percent of original size [2022-11-25 22:32:02,958 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 22 treesize of output 20 [2022-11-25 22:32:03,115 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-25 22:32:03,116 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 22:32:03,820 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-25 22:32:03,820 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1369862339] [2022-11-25 22:32:03,820 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1369862339] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 22:32:03,820 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [948809900] [2022-11-25 22:32:03,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:32:03,821 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-25 22:32:03,821 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/cvc4 [2022-11-25 22:32:03,823 INFO L229 MonitoredProcess]: Starting monitored process 66 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-25 22:32:03,827 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (66)] Waiting until timeout for monitored process [2022-11-25 22:32:05,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:32:05,488 INFO L263 TraceCheckSpWp]: Trace formula consists of 433 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-25 22:32:05,491 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:32:05,496 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 [2022-11-25 22:32:05,591 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:32:05,592 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 [2022-11-25 22:32:05,918 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 13 treesize of output 9 [2022-11-25 22:32:13,749 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:32:13,757 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:32:13,764 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:32:13,866 INFO L321 Elim1Store]: treesize reduction 33, result has 40.0 percent of original size [2022-11-25 22:32:13,867 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 25 treesize of output 40 [2022-11-25 22:32:14,125 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-25 22:32:14,125 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 22:32:16,550 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [948809900] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 22:32:16,551 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1392835831] [2022-11-25 22:32:16,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:32:16,551 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 22:32:16,551 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 22:32:16,552 INFO L229 MonitoredProcess]: Starting monitored process 67 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 22:32:16,555 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Waiting until timeout for monitored process [2022-11-25 22:32:17,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:32:17,263 INFO L263 TraceCheckSpWp]: Trace formula consists of 433 conjuncts, 38 conjunts are in the unsatisfiable core [2022-11-25 22:32:17,267 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:32:17,284 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 [2022-11-25 22:32:17,293 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 [2022-11-25 22:32:17,418 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:32:17,418 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 [2022-11-25 22:32:17,448 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-25 22:32:17,449 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 [2022-11-25 22:32:18,017 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 13 treesize of output 9 [2022-11-25 22:32:18,593 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-25 22:32:18,593 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 57 treesize of output 56 [2022-11-25 22:32:18,743 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-25 22:32:18,743 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 57 treesize of output 56 [2022-11-25 22:32:18,834 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 45 treesize of output 27 [2022-11-25 22:32:18,859 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_7122 (_ BitVec 32)) (v_arrayElimCell_239 (_ BitVec 32)) (v_ArrVal_7120 (_ BitVec 32)) (create_data_~data~0.base (_ BitVec 32))) (let ((.cse0 (store |c_old(#valid)| create_data_~data~0.base (_ bv1 1)))) (and (= (select |c_old(#valid)| create_data_~data~0.base) (_ bv0 1)) (= (select .cse0 v_arrayElimCell_239) (_ bv0 1)) (= (store (store |c_old(#length)| create_data_~data~0.base v_ArrVal_7122) v_arrayElimCell_239 v_ArrVal_7120) |c_#length|) (= |c_#valid| (store .cse0 v_arrayElimCell_239 (_ bv1 1)))))) is different from true [2022-11-25 22:32:19,187 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_7129 (_ BitVec 32)) (v_ArrVal_7122 (_ BitVec 32)) (v_arrayElimCell_239 (_ BitVec 32)) (v_ArrVal_7120 (_ BitVec 32)) (create_data_~data~0.base (_ BitVec 32)) (create_data_~nextData~0.base (_ BitVec 32))) (let ((.cse0 (store |c_old(#valid)| create_data_~data~0.base (_ bv1 1)))) (and (= (select |c_old(#valid)| create_data_~data~0.base) (_ bv0 1)) (= (select .cse0 v_arrayElimCell_239) (_ bv0 1)) (= (_ bv0 1) (select (store .cse0 v_arrayElimCell_239 (_ bv1 1)) create_data_~nextData~0.base)) (= (store (store (store |c_old(#length)| create_data_~data~0.base v_ArrVal_7122) v_arrayElimCell_239 v_ArrVal_7120) create_data_~nextData~0.base v_ArrVal_7129) |c_#length|)))) is different from true [2022-11-25 22:32:19,582 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:32:19,585 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:32:19,589 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:32:19,592 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:32:19,595 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:32:19,598 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:32:19,600 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 24 [2022-11-25 22:32:19,719 INFO L321 Elim1Store]: treesize reduction 66, result has 27.5 percent of original size [2022-11-25 22:32:19,719 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 9 case distinctions, treesize of input 42 treesize of output 56 [2022-11-25 22:32:19,841 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 10 not checked. [2022-11-25 22:32:19,841 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 22:32:37,023 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1392835831] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 22:32:37,023 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 22:32:37,024 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8, 10] total 27 [2022-11-25 22:32:37,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823326346] [2022-11-25 22:32:37,024 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 22:32:37,024 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-11-25 22:32:37,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-25 22:32:37,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-11-25 22:32:37,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=775, Unknown=15, NotChecked=114, Total=992 [2022-11-25 22:32:37,025 INFO L87 Difference]: Start difference. First operand 409 states and 459 transitions. Second operand has 28 states, 27 states have (on average 5.296296296296297) internal successors, (143), 28 states have internal predecessors, (143), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-25 22:32:49,357 WARN L233 SmtUtils]: Spent 10.84s on a formula simplification. DAG size of input: 60 DAG size of output: 54 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 22:33:01,590 WARN L233 SmtUtils]: Spent 11.19s on a formula simplification. DAG size of input: 77 DAG size of output: 63 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 22:33:14,873 WARN L233 SmtUtils]: Spent 12.69s on a formula simplification. DAG size of input: 67 DAG size of output: 61 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 22:33:41,304 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 22:33:45,078 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 22:33:47,271 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 22:33:49,513 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.88s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 22:33:53,162 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.48s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 22:33:57,286 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 22:33:58,956 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 22:34:01,813 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 22:34:07,313 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 22:34:09,664 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-25 22:34:18,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:34:18,770 INFO L93 Difference]: Finished difference Result 760 states and 827 transitions. [2022-11-25 22:34:18,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-11-25 22:34:18,771 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 5.296296296296297) internal successors, (143), 28 states have internal predecessors, (143), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 57 [2022-11-25 22:34:18,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:34:18,773 INFO L225 Difference]: With dead ends: 760 [2022-11-25 22:34:18,773 INFO L226 Difference]: Without dead ends: 760 [2022-11-25 22:34:18,774 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 150 SyntacticMatches, 1 SemanticMatches, 51 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 475 ImplicationChecksByTransitivity, 86.5s TimeCoverageRelationStatistics Valid=365, Invalid=2148, Unknown=45, NotChecked=198, Total=2756 [2022-11-25 22:34:18,775 INFO L413 NwaCegarLoop]: 66 mSDtfsCounter, 1790 mSDsluCounter, 1073 mSDsCounter, 0 mSdLazyCounter, 1730 mSolverCounterSat, 87 mSolverCounterUnsat, 262 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 41.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1790 SdHoareTripleChecker+Valid, 1139 SdHoareTripleChecker+Invalid, 2703 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 1730 IncrementalHoareTripleChecker+Invalid, 262 IncrementalHoareTripleChecker+Unknown, 624 IncrementalHoareTripleChecker+Unchecked, 42.8s IncrementalHoareTripleChecker+Time [2022-11-25 22:34:18,775 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1790 Valid, 1139 Invalid, 2703 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 1730 Invalid, 262 Unknown, 624 Unchecked, 42.8s Time] [2022-11-25 22:34:18,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 760 states. [2022-11-25 22:34:18,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 760 to 269. [2022-11-25 22:34:18,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 269 states, 231 states have (on average 1.2207792207792207) internal successors, (282), 260 states have internal predecessors, (282), 2 states have call successors, (2), 2 states have call predecessors, (2), 6 states have return successors, (6), 6 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-25 22:34:18,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 290 transitions. [2022-11-25 22:34:18,784 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 290 transitions. Word has length 57 [2022-11-25 22:34:18,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:34:18,784 INFO L495 AbstractCegarLoop]: Abstraction has 269 states and 290 transitions. [2022-11-25 22:34:18,784 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 27 states have (on average 5.296296296296297) internal successors, (143), 28 states have internal predecessors, (143), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-25 22:34:18,784 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 290 transitions. [2022-11-25 22:34:18,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-11-25 22:34:18,785 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:34:18,786 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 22:34:18,809 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/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 (65)] Ended with exit code 0 [2022-11-25 22:34:19,012 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Forceful destruction successful, exit code 0 [2022-11-25 22:34:19,216 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (66)] Forceful destruction successful, exit code 0 [2022-11-25 22:34:19,404 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 65 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,67 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true,66 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt [2022-11-25 22:34:19,404 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr31REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_dataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-11-25 22:34:19,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:34:19,405 INFO L85 PathProgramCache]: Analyzing trace with hash -1611932791, now seen corresponding path program 1 times [2022-11-25 22:34:19,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-25 22:34:19,405 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2109457950] [2022-11-25 22:34:19,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:34:19,405 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 [2022-11-25 22:34:19,405 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/mathsat [2022-11-25 22:34:19,406 INFO L229 MonitoredProcess]: Starting monitored process 68 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/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) [2022-11-25 22:34:19,409 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/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 (68)] Waiting until timeout for monitored process [2022-11-25 22:34:20,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:34:20,121 INFO L263 TraceCheckSpWp]: Trace formula consists of 351 conjuncts, 30 conjunts are in the unsatisfiable core [2022-11-25 22:34:20,124 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:34:20,132 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 [2022-11-25 22:34:20,147 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 [2022-11-25 22:34:20,397 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 13 treesize of output 9 [2022-11-25 22:34:20,471 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 9 [2022-11-25 22:34:20,487 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_arrayElimCell_246 (_ BitVec 32)) (v_ArrVal_7263 (_ BitVec 32)) (create_data_~data~0.base (_ BitVec 32))) (and (= (store (store |c_old(#length)| create_data_~data~0.base v_ArrVal_7263) v_arrayElimCell_246 (_ bv80 32)) |c_#length|) (= (select |c_old(#valid)| create_data_~data~0.base) (_ bv0 1)))) is different from true [2022-11-25 22:34:20,809 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:34:20,877 INFO L321 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2022-11-25 22:34:20,878 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 2 case distinctions, treesize of input 15 treesize of output 27 [2022-11-25 22:34:20,907 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-25 22:34:20,907 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 [2022-11-25 22:34:21,075 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 11 treesize of output 7 [2022-11-25 22:34:21,084 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 11 treesize of output 7 [2022-11-25 22:34:21,453 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 33 treesize of output 21 [2022-11-25 22:34:21,469 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 [2022-11-25 22:34:21,541 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 5 not checked. [2022-11-25 22:34:21,541 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 22:34:21,936 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 40 treesize of output 32 [2022-11-25 22:34:21,962 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:34:21,964 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:34:21,970 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:34:21,972 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:34:28,788 WARN L233 SmtUtils]: Spent 6.29s on a formula simplification that was a NOOP. DAG size: 35 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 22:34:28,789 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-25 22:34:28,789 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2109457950] [2022-11-25 22:34:28,789 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2109457950] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 22:34:28,789 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1679428006] [2022-11-25 22:34:28,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:34:28,790 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-25 22:34:28,790 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/cvc4 [2022-11-25 22:34:28,791 INFO L229 MonitoredProcess]: Starting monitored process 69 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-25 22:34:28,792 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (69)] Waiting until timeout for monitored process [2022-11-25 22:34:30,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:34:30,365 INFO L263 TraceCheckSpWp]: Trace formula consists of 351 conjuncts, 30 conjunts are in the unsatisfiable core [2022-11-25 22:34:30,368 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:34:30,444 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 [2022-11-25 22:34:30,463 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 [2022-11-25 22:34:30,742 WARN L859 $PredicateComparison]: unable to prove that (exists ((create_data_~data~0.base (_ BitVec 32))) (and (exists ((v_ArrVal_7393 (_ BitVec 32))) (= (store (store |c_old(#length)| create_data_~data~0.base v_ArrVal_7393) |c_create_data_#t~malloc7.base| (_ bv80 32)) |c_#length|)) (= (select |c_old(#valid)| create_data_~data~0.base) (_ bv0 1)))) is different from true [2022-11-25 22:34:30,759 WARN L859 $PredicateComparison]: unable to prove that (exists ((create_data_~data~0.base (_ BitVec 32)) (v_ArrVal_7393 (_ BitVec 32)) (|create_data_#t~malloc7.base| (_ BitVec 32))) (and (= (select |c_old(#valid)| create_data_~data~0.base) (_ bv0 1)) (= |c_#length| (store (store |c_old(#length)| create_data_~data~0.base v_ArrVal_7393) |create_data_#t~malloc7.base| (_ bv80 32))))) is different from true [2022-11-25 22:34:31,126 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:34:31,194 INFO L321 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2022-11-25 22:34:31,194 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 2 case distinctions, treesize of input 15 treesize of output 27 [2022-11-25 22:34:31,222 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-25 22:34:31,223 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 [2022-11-25 22:34:31,430 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 11 treesize of output 7 [2022-11-25 22:34:31,452 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 11 treesize of output 7 [2022-11-25 22:34:32,082 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 33 treesize of output 21 [2022-11-25 22:34:32,086 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 [2022-11-25 22:34:32,138 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-25 22:34:32,138 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 22:34:32,138 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1679428006] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:34:32,138 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 22:34:32,138 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [9] total 16 [2022-11-25 22:34:32,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745831871] [2022-11-25 22:34:32,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:34:32,139 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-25 22:34:32,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-25 22:34:32,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-25 22:34:32,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=257, Unknown=3, NotChecked=102, Total=420 [2022-11-25 22:34:32,140 INFO L87 Difference]: Start difference. First operand 269 states and 290 transitions. Second operand has 11 states, 10 states have (on average 4.9) internal successors, (49), 11 states have internal predecessors, (49), 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) [2022-11-25 22:34:34,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:34:34,562 INFO L93 Difference]: Finished difference Result 494 states and 536 transitions. [2022-11-25 22:34:34,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-25 22:34:34,563 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 4.9) internal successors, (49), 11 states have internal predecessors, (49), 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 61 [2022-11-25 22:34:34,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:34:34,564 INFO L225 Difference]: With dead ends: 494 [2022-11-25 22:34:34,564 INFO L226 Difference]: Without dead ends: 494 [2022-11-25 22:34:34,564 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 119 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 8.2s TimeCoverageRelationStatistics Valid=90, Invalid=339, Unknown=3, NotChecked=120, Total=552 [2022-11-25 22:34:34,565 INFO L413 NwaCegarLoop]: 112 mSDtfsCounter, 360 mSDsluCounter, 406 mSDsCounter, 0 mSdLazyCounter, 437 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 360 SdHoareTripleChecker+Valid, 518 SdHoareTripleChecker+Invalid, 1008 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 437 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 565 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-11-25 22:34:34,565 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [360 Valid, 518 Invalid, 1008 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 437 Invalid, 0 Unknown, 565 Unchecked, 1.8s Time] [2022-11-25 22:34:34,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 494 states. [2022-11-25 22:34:34,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 494 to 333. [2022-11-25 22:34:34,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 333 states, 291 states have (on average 1.2233676975945018) internal successors, (356), 320 states have internal predecessors, (356), 4 states have call successors, (4), 2 states have call predecessors, (4), 8 states have return successors, (16), 10 states have call predecessors, (16), 4 states have call successors, (16) [2022-11-25 22:34:34,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 333 states to 333 states and 376 transitions. [2022-11-25 22:34:34,574 INFO L78 Accepts]: Start accepts. Automaton has 333 states and 376 transitions. Word has length 61 [2022-11-25 22:34:34,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:34:34,575 INFO L495 AbstractCegarLoop]: Abstraction has 333 states and 376 transitions. [2022-11-25 22:34:34,575 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 4.9) internal successors, (49), 11 states have internal predecessors, (49), 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) [2022-11-25 22:34:34,575 INFO L276 IsEmpty]: Start isEmpty. Operand 333 states and 376 transitions. [2022-11-25 22:34:34,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-11-25 22:34:34,576 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:34:34,577 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 22:34:34,601 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/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 (68)] Forceful destruction successful, exit code 0 [2022-11-25 22:34:34,807 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (69)] Forceful destruction successful, exit code 0 [2022-11-25 22:34:34,996 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 68 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,69 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt [2022-11-25 22:34:34,996 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr34REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_dataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-11-25 22:34:34,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:34:34,997 INFO L85 PathProgramCache]: Analyzing trace with hash 939726753, now seen corresponding path program 1 times [2022-11-25 22:34:34,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-25 22:34:34,997 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [445569551] [2022-11-25 22:34:34,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:34:34,997 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 [2022-11-25 22:34:34,998 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/mathsat [2022-11-25 22:34:34,998 INFO L229 MonitoredProcess]: Starting monitored process 70 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/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) [2022-11-25 22:34:35,000 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/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 (70)] Waiting until timeout for monitored process [2022-11-25 22:34:35,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:34:35,555 INFO L263 TraceCheckSpWp]: Trace formula consists of 365 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-25 22:34:35,557 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:34:35,679 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 11 treesize of output 7 [2022-11-25 22:34:35,761 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 19 treesize of output 11 [2022-11-25 22:34:35,780 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-25 22:34:35,780 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 22:34:35,780 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-25 22:34:35,780 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [445569551] [2022-11-25 22:34:35,780 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [445569551] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:34:35,780 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 22:34:35,781 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-25 22:34:35,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107092140] [2022-11-25 22:34:35,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:34:35,781 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-25 22:34:35,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-25 22:34:35,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-25 22:34:35,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-25 22:34:35,782 INFO L87 Difference]: Start difference. First operand 333 states and 376 transitions. Second operand has 6 states, 5 states have (on average 10.4) internal successors, (52), 6 states have internal predecessors, (52), 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) [2022-11-25 22:34:36,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:34:36,629 INFO L93 Difference]: Finished difference Result 348 states and 390 transitions. [2022-11-25 22:34:36,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-25 22:34:36,630 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 10.4) internal successors, (52), 6 states have internal predecessors, (52), 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 64 [2022-11-25 22:34:36,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:34:36,631 INFO L225 Difference]: With dead ends: 348 [2022-11-25 22:34:36,631 INFO L226 Difference]: Without dead ends: 348 [2022-11-25 22:34:36,632 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-11-25 22:34:36,632 INFO L413 NwaCegarLoop]: 106 mSDtfsCounter, 170 mSDsluCounter, 197 mSDsCounter, 0 mSdLazyCounter, 189 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 170 SdHoareTripleChecker+Valid, 303 SdHoareTripleChecker+Invalid, 194 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-25 22:34:36,633 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [170 Valid, 303 Invalid, 194 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 189 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-25 22:34:36,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 348 states. [2022-11-25 22:34:36,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 348 to 336. [2022-11-25 22:34:36,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 336 states, 294 states have (on average 1.2244897959183674) internal successors, (360), 323 states have internal predecessors, (360), 4 states have call successors, (4), 2 states have call predecessors, (4), 8 states have return successors, (16), 10 states have call predecessors, (16), 4 states have call successors, (16) [2022-11-25 22:34:36,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 336 states to 336 states and 380 transitions. [2022-11-25 22:34:36,639 INFO L78 Accepts]: Start accepts. Automaton has 336 states and 380 transitions. Word has length 64 [2022-11-25 22:34:36,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:34:36,640 INFO L495 AbstractCegarLoop]: Abstraction has 336 states and 380 transitions. [2022-11-25 22:34:36,640 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 10.4) internal successors, (52), 6 states have internal predecessors, (52), 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) [2022-11-25 22:34:36,640 INFO L276 IsEmpty]: Start isEmpty. Operand 336 states and 380 transitions. [2022-11-25 22:34:36,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-11-25 22:34:36,641 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:34:36,642 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 22:34:36,661 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/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 (70)] Forceful destruction successful, exit code 0 [2022-11-25 22:34:36,851 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 70 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/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 [2022-11-25 22:34:36,852 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr35REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_dataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-11-25 22:34:36,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:34:36,852 INFO L85 PathProgramCache]: Analyzing trace with hash 939726754, now seen corresponding path program 1 times [2022-11-25 22:34:36,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-25 22:34:36,852 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1410626327] [2022-11-25 22:34:36,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:34:36,852 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 [2022-11-25 22:34:36,853 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/mathsat [2022-11-25 22:34:36,853 INFO L229 MonitoredProcess]: Starting monitored process 71 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/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) [2022-11-25 22:34:36,856 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/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 (71)] Waiting until timeout for monitored process [2022-11-25 22:34:37,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:34:37,429 INFO L263 TraceCheckSpWp]: Trace formula consists of 365 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-25 22:34:37,431 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:34:37,637 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 11 treesize of output 7 [2022-11-25 22:34:37,646 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 11 treesize of output 7 [2022-11-25 22:34:37,809 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 17 treesize of output 9 [2022-11-25 22:34:37,817 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 [2022-11-25 22:34:37,850 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-25 22:34:37,851 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 22:34:37,851 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-25 22:34:37,851 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1410626327] [2022-11-25 22:34:37,851 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1410626327] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:34:37,851 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 22:34:37,851 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-25 22:34:37,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797840235] [2022-11-25 22:34:37,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:34:37,852 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-25 22:34:37,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-25 22:34:37,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-25 22:34:37,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-25 22:34:37,853 INFO L87 Difference]: Start difference. First operand 336 states and 380 transitions. Second operand has 6 states, 5 states have (on average 10.4) internal successors, (52), 6 states have internal predecessors, (52), 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) [2022-11-25 22:34:38,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:34:38,932 INFO L93 Difference]: Finished difference Result 364 states and 406 transitions. [2022-11-25 22:34:38,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 22:34:38,933 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 10.4) internal successors, (52), 6 states have internal predecessors, (52), 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 64 [2022-11-25 22:34:38,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:34:38,935 INFO L225 Difference]: With dead ends: 364 [2022-11-25 22:34:38,935 INFO L226 Difference]: Without dead ends: 364 [2022-11-25 22:34:38,935 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-25 22:34:38,936 INFO L413 NwaCegarLoop]: 103 mSDtfsCounter, 156 mSDsluCounter, 224 mSDsCounter, 0 mSdLazyCounter, 196 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 327 SdHoareTripleChecker+Invalid, 200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-25 22:34:38,936 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [156 Valid, 327 Invalid, 200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 196 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-25 22:34:38,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 364 states. [2022-11-25 22:34:38,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 364 to 336. [2022-11-25 22:34:38,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 336 states, 294 states have (on average 1.2210884353741496) internal successors, (359), 323 states have internal predecessors, (359), 4 states have call successors, (4), 2 states have call predecessors, (4), 8 states have return successors, (16), 10 states have call predecessors, (16), 4 states have call successors, (16) [2022-11-25 22:34:38,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 336 states to 336 states and 379 transitions. [2022-11-25 22:34:38,942 INFO L78 Accepts]: Start accepts. Automaton has 336 states and 379 transitions. Word has length 64 [2022-11-25 22:34:38,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:34:38,943 INFO L495 AbstractCegarLoop]: Abstraction has 336 states and 379 transitions. [2022-11-25 22:34:38,943 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 10.4) internal successors, (52), 6 states have internal predecessors, (52), 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) [2022-11-25 22:34:38,943 INFO L276 IsEmpty]: Start isEmpty. Operand 336 states and 379 transitions. [2022-11-25 22:34:38,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-25 22:34:38,944 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:34:38,944 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 22:34:38,964 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/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 (71)] Forceful destruction successful, exit code 0 [2022-11-25 22:34:39,158 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 71 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/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 [2022-11-25 22:34:39,158 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr31REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_dataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-11-25 22:34:39,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:34:39,159 INFO L85 PathProgramCache]: Analyzing trace with hash 504851823, now seen corresponding path program 1 times [2022-11-25 22:34:39,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-25 22:34:39,159 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1922459653] [2022-11-25 22:34:39,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:34:39,159 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 [2022-11-25 22:34:39,160 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/mathsat [2022-11-25 22:34:39,160 INFO L229 MonitoredProcess]: Starting monitored process 72 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/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) [2022-11-25 22:34:39,161 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/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 (72)] Waiting until timeout for monitored process [2022-11-25 22:34:39,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:34:39,848 INFO L263 TraceCheckSpWp]: Trace formula consists of 363 conjuncts, 30 conjunts are in the unsatisfiable core [2022-11-25 22:34:39,851 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:34:39,859 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 [2022-11-25 22:34:39,874 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 [2022-11-25 22:34:40,121 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 13 treesize of output 9 [2022-11-25 22:34:40,196 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 9 [2022-11-25 22:34:40,212 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_arrayElimCell_261 (_ BitVec 32)) (create_data_~data~0.base (_ BitVec 32)) (v_ArrVal_7749 (_ BitVec 32))) (and (= (select |c_old(#valid)| create_data_~data~0.base) (_ bv0 1)) (= (store (store |c_old(#length)| create_data_~data~0.base v_ArrVal_7749) v_arrayElimCell_261 (_ bv80 32)) |c_#length|))) is different from true [2022-11-25 22:34:40,596 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:34:40,679 INFO L321 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2022-11-25 22:34:40,679 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 2 case distinctions, treesize of input 15 treesize of output 27 [2022-11-25 22:34:40,712 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-25 22:34:40,713 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 [2022-11-25 22:34:40,898 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 11 treesize of output 7 [2022-11-25 22:34:40,917 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 11 treesize of output 7 [2022-11-25 22:34:41,266 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 33 treesize of output 21 [2022-11-25 22:34:41,280 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 [2022-11-25 22:34:41,343 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 5 not checked. [2022-11-25 22:34:41,343 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 22:34:41,748 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 40 treesize of output 32 [2022-11-25 22:34:41,791 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:34:41,793 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:34:41,799 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:34:41,801 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:34:46,652 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-25 22:34:46,652 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1922459653] [2022-11-25 22:34:46,652 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1922459653] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 22:34:46,652 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1793005331] [2022-11-25 22:34:46,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:34:46,652 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-25 22:34:46,652 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/cvc4 [2022-11-25 22:34:46,653 INFO L229 MonitoredProcess]: Starting monitored process 73 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-25 22:34:46,655 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (73)] Waiting until timeout for monitored process [2022-11-25 22:34:48,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:34:48,254 INFO L263 TraceCheckSpWp]: Trace formula consists of 363 conjuncts, 29 conjunts are in the unsatisfiable core [2022-11-25 22:34:48,257 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:34:48,320 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 [2022-11-25 22:34:48,334 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 [2022-11-25 22:34:48,642 WARN L859 $PredicateComparison]: unable to prove that (exists ((create_data_~data~0.base (_ BitVec 32)) (|create_data_#t~malloc7.base| (_ BitVec 32))) (and (exists ((v_ArrVal_7881 (_ BitVec 32))) (= |c_#length| (store (store |c_old(#length)| create_data_~data~0.base v_ArrVal_7881) |create_data_#t~malloc7.base| (_ bv80 32)))) (= (select |c_old(#valid)| create_data_~data~0.base) (_ bv0 1)))) is different from true [2022-11-25 22:34:49,015 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:34:49,078 INFO L321 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2022-11-25 22:34:49,078 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 2 case distinctions, treesize of input 15 treesize of output 27 [2022-11-25 22:34:49,105 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-25 22:34:49,106 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 [2022-11-25 22:34:49,323 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 11 treesize of output 7 [2022-11-25 22:34:49,344 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 11 treesize of output 7 [2022-11-25 22:34:49,917 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 33 treesize of output 21 [2022-11-25 22:34:49,920 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 [2022-11-25 22:34:49,977 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-25 22:34:49,978 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 22:34:49,978 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1793005331] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:34:49,978 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 22:34:49,978 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [9] total 15 [2022-11-25 22:34:49,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205478425] [2022-11-25 22:34:49,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:34:49,979 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-25 22:34:49,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-25 22:34:49,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-25 22:34:49,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=256, Unknown=2, NotChecked=66, Total=380 [2022-11-25 22:34:49,980 INFO L87 Difference]: Start difference. First operand 336 states and 379 transitions. Second operand has 10 states, 9 states have (on average 5.888888888888889) internal successors, (53), 10 states have internal predecessors, (53), 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) [2022-11-25 22:34:53,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:34:53,238 INFO L93 Difference]: Finished difference Result 494 states and 552 transitions. [2022-11-25 22:34:53,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-25 22:34:53,239 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 5.888888888888889) internal successors, (53), 10 states have internal predecessors, (53), 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 65 [2022-11-25 22:34:53,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:34:53,240 INFO L225 Difference]: With dead ends: 494 [2022-11-25 22:34:53,240 INFO L226 Difference]: Without dead ends: 494 [2022-11-25 22:34:53,241 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 128 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 6.2s TimeCoverageRelationStatistics Valid=88, Invalid=338, Unknown=2, NotChecked=78, Total=506 [2022-11-25 22:34:53,241 INFO L413 NwaCegarLoop]: 161 mSDtfsCounter, 247 mSDsluCounter, 586 mSDsCounter, 0 mSdLazyCounter, 640 mSolverCounterSat, 5 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 247 SdHoareTripleChecker+Valid, 747 SdHoareTripleChecker+Invalid, 931 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 640 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 285 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-11-25 22:34:53,241 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [247 Valid, 747 Invalid, 931 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 640 Invalid, 1 Unknown, 285 Unchecked, 2.6s Time] [2022-11-25 22:34:53,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 494 states. [2022-11-25 22:34:53,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 494 to 359. [2022-11-25 22:34:53,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 359 states, 316 states have (on average 1.2151898734177216) internal successors, (384), 345 states have internal predecessors, (384), 4 states have call successors, (4), 2 states have call predecessors, (4), 9 states have return successors, (18), 11 states have call predecessors, (18), 4 states have call successors, (18) [2022-11-25 22:34:53,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 359 states to 359 states and 406 transitions. [2022-11-25 22:34:53,249 INFO L78 Accepts]: Start accepts. Automaton has 359 states and 406 transitions. Word has length 65 [2022-11-25 22:34:53,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:34:53,250 INFO L495 AbstractCegarLoop]: Abstraction has 359 states and 406 transitions. [2022-11-25 22:34:53,250 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 5.888888888888889) internal successors, (53), 10 states have internal predecessors, (53), 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) [2022-11-25 22:34:53,250 INFO L276 IsEmpty]: Start isEmpty. Operand 359 states and 406 transitions. [2022-11-25 22:34:53,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-25 22:34:53,251 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:34:53,251 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 22:34:53,266 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (73)] Ended with exit code 0 [2022-11-25 22:34:53,480 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/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 (72)] Forceful destruction successful, exit code 0 [2022-11-25 22:34:53,675 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 73 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt,72 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/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 [2022-11-25 22:34:53,675 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_dataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-11-25 22:34:53,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:34:53,675 INFO L85 PathProgramCache]: Analyzing trace with hash -665539789, now seen corresponding path program 1 times [2022-11-25 22:34:53,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-25 22:34:53,676 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [191866905] [2022-11-25 22:34:53,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:34:53,676 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 [2022-11-25 22:34:53,676 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/mathsat [2022-11-25 22:34:53,677 INFO L229 MonitoredProcess]: Starting monitored process 74 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/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) [2022-11-25 22:34:53,679 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/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 (74)] Waiting until timeout for monitored process [2022-11-25 22:34:54,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:34:54,392 INFO L263 TraceCheckSpWp]: Trace formula consists of 382 conjuncts, 21 conjunts are in the unsatisfiable core [2022-11-25 22:34:54,394 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:34:54,473 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-25 22:34:54,474 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 1 case distinctions, treesize of input 9 treesize of output 19 [2022-11-25 22:34:54,530 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 11 treesize of output 7 [2022-11-25 22:34:54,609 INFO L321 Elim1Store]: treesize reduction 29, result has 27.5 percent of original size [2022-11-25 22:34:54,609 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 18 treesize of output 24 [2022-11-25 22:34:54,722 INFO L321 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2022-11-25 22:34:54,723 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 29 treesize of output 24 [2022-11-25 22:34:54,851 INFO L321 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2022-11-25 22:34:54,852 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 34 treesize of output 14 [2022-11-25 22:34:54,895 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-25 22:34:54,895 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 22:34:55,102 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 36 treesize of output 32 [2022-11-25 22:34:55,404 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-25 22:34:55,404 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-25 22:34:55,404 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [191866905] [2022-11-25 22:34:55,404 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [191866905] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 22:34:55,404 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [425996331] [2022-11-25 22:34:55,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:34:55,405 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-25 22:34:55,405 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/cvc4 [2022-11-25 22:34:55,406 INFO L229 MonitoredProcess]: Starting monitored process 75 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-25 22:34:55,407 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (75)] Waiting until timeout for monitored process [2022-11-25 22:34:56,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:34:56,763 INFO L263 TraceCheckSpWp]: Trace formula consists of 382 conjuncts, 22 conjunts are in the unsatisfiable core [2022-11-25 22:34:56,765 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:34:57,035 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 11 treesize of output 7 [2022-11-25 22:34:57,209 INFO L321 Elim1Store]: treesize reduction 29, result has 27.5 percent of original size [2022-11-25 22:34:57,209 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 18 treesize of output 24 [2022-11-25 22:34:57,423 INFO L321 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2022-11-25 22:34:57,423 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 29 treesize of output 24 [2022-11-25 22:34:57,578 INFO L321 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2022-11-25 22:34:57,578 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 34 treesize of output 14 [2022-11-25 22:34:57,586 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-25 22:34:57,586 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 22:34:57,688 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 36 treesize of output 32 [2022-11-25 22:34:57,843 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-25 22:34:57,843 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [425996331] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 22:34:57,843 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1890207599] [2022-11-25 22:34:57,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:34:57,843 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 22:34:57,844 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 22:34:57,844 INFO L229 MonitoredProcess]: Starting monitored process 76 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 22:34:57,847 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Waiting until timeout for monitored process [2022-11-25 22:34:58,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:34:58,440 INFO L263 TraceCheckSpWp]: Trace formula consists of 382 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-25 22:34:58,442 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:34:58,524 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 11 treesize of output 7 [2022-11-25 22:34:58,609 INFO L321 Elim1Store]: treesize reduction 34, result has 37.0 percent of original size [2022-11-25 22:34:58,609 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 23 treesize of output 35 [2022-11-25 22:34:58,804 INFO L321 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2022-11-25 22:34:58,804 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 37 treesize of output 28 [2022-11-25 22:34:58,976 INFO L321 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2022-11-25 22:34:58,977 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 42 treesize of output 18 [2022-11-25 22:34:58,981 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-25 22:34:58,981 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 22:34:59,090 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 36 treesize of output 32 [2022-11-25 22:34:59,251 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-25 22:34:59,252 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1890207599] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 22:34:59,252 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-25 22:34:59,252 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 9, 8, 8, 8] total 23 [2022-11-25 22:34:59,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056958206] [2022-11-25 22:34:59,252 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-25 22:34:59,253 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-25 22:34:59,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-25 22:34:59,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-25 22:34:59,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=479, Unknown=0, NotChecked=0, Total=552 [2022-11-25 22:34:59,254 INFO L87 Difference]: Start difference. First operand 359 states and 406 transitions. Second operand has 24 states, 23 states have (on average 4.304347826086956) internal successors, (99), 23 states have internal predecessors, (99), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-25 22:35:03,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:35:03,094 INFO L93 Difference]: Finished difference Result 370 states and 420 transitions. [2022-11-25 22:35:03,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-25 22:35:03,095 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 4.304347826086956) internal successors, (99), 23 states have internal predecessors, (99), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 65 [2022-11-25 22:35:03,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:35:03,097 INFO L225 Difference]: With dead ends: 370 [2022-11-25 22:35:03,097 INFO L226 Difference]: Without dead ends: 370 [2022-11-25 22:35:03,098 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 390 GetRequests, 357 SyntacticMatches, 5 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 179 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=195, Invalid=675, Unknown=0, NotChecked=0, Total=870 [2022-11-25 22:35:03,098 INFO L413 NwaCegarLoop]: 109 mSDtfsCounter, 334 mSDsluCounter, 863 mSDsCounter, 0 mSdLazyCounter, 794 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 334 SdHoareTripleChecker+Valid, 972 SdHoareTripleChecker+Invalid, 813 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 794 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-11-25 22:35:03,098 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [334 Valid, 972 Invalid, 813 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 794 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2022-11-25 22:35:03,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 370 states. [2022-11-25 22:35:03,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 370 to 358. [2022-11-25 22:35:03,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 358 states, 316 states have (on average 1.2088607594936709) internal successors, (382), 344 states have internal predecessors, (382), 4 states have call successors, (4), 2 states have call predecessors, (4), 9 states have return successors, (18), 11 states have call predecessors, (18), 4 states have call successors, (18) [2022-11-25 22:35:03,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 358 states to 358 states and 404 transitions. [2022-11-25 22:35:03,106 INFO L78 Accepts]: Start accepts. Automaton has 358 states and 404 transitions. Word has length 65 [2022-11-25 22:35:03,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:35:03,107 INFO L495 AbstractCegarLoop]: Abstraction has 358 states and 404 transitions. [2022-11-25 22:35:03,107 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 4.304347826086956) internal successors, (99), 23 states have internal predecessors, (99), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-25 22:35:03,107 INFO L276 IsEmpty]: Start isEmpty. Operand 358 states and 404 transitions. [2022-11-25 22:35:03,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-25 22:35:03,108 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:35:03,108 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 22:35:03,125 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (75)] Forceful destruction successful, exit code 0 [2022-11-25 22:35:03,333 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Forceful destruction successful, exit code 0 [2022-11-25 22:35:03,538 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/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 (74)] Forceful destruction successful, exit code 0 [2022-11-25 22:35:03,725 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 75 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt,76 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true,74 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/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 [2022-11-25 22:35:03,726 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_dataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-11-25 22:35:03,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:35:03,726 INFO L85 PathProgramCache]: Analyzing trace with hash -665539788, now seen corresponding path program 1 times [2022-11-25 22:35:03,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-25 22:35:03,727 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [48279965] [2022-11-25 22:35:03,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:35:03,727 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 [2022-11-25 22:35:03,727 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/mathsat [2022-11-25 22:35:03,728 INFO L229 MonitoredProcess]: Starting monitored process 77 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/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) [2022-11-25 22:35:03,729 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/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 (77)] Waiting until timeout for monitored process [2022-11-25 22:35:04,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:35:04,453 INFO L263 TraceCheckSpWp]: Trace formula consists of 382 conjuncts, 31 conjunts are in the unsatisfiable core [2022-11-25 22:35:04,469 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:35:04,665 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 11 treesize of output 7 [2022-11-25 22:35:04,681 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 11 treesize of output 7 [2022-11-25 22:35:04,907 INFO L321 Elim1Store]: treesize reduction 19, result has 47.2 percent of original size [2022-11-25 22:35:04,907 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 16 treesize of output 26 [2022-11-25 22:35:04,941 INFO L321 Elim1Store]: treesize reduction 6, result has 57.1 percent of original size [2022-11-25 22:35:04,941 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 17 treesize of output 17 [2022-11-25 22:35:05,116 INFO L321 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2022-11-25 22:35:05,116 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 20 [2022-11-25 22:35:05,177 INFO L321 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2022-11-25 22:35:05,178 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 35 treesize of output 26 [2022-11-25 22:35:05,343 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 31 treesize of output 13 [2022-11-25 22:35:05,352 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 19 treesize of output 7 [2022-11-25 22:35:05,397 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-25 22:35:05,397 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 22:35:06,700 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 36 treesize of output 28 [2022-11-25 22:35:06,735 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 66 treesize of output 62 [2022-11-25 22:35:06,740 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 102 treesize of output 94 [2022-11-25 22:35:44,391 WARN L233 SmtUtils]: Spent 34.84s on a formula simplification. DAG size of input: 61 DAG size of output: 47 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 22:35:44,792 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-25 22:35:44,792 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 221 treesize of output 251 [2022-11-25 22:35:45,203 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-25 22:35:45,204 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 205 treesize of output 295 [2022-11-25 22:35:50,643 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-25 22:35:50,643 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-25 22:35:50,643 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [48279965] [2022-11-25 22:35:50,644 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [48279965] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 22:35:50,644 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [94756603] [2022-11-25 22:35:50,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:35:50,644 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-25 22:35:50,644 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/cvc4 [2022-11-25 22:35:50,645 INFO L229 MonitoredProcess]: Starting monitored process 78 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-25 22:35:50,647 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (78)] Waiting until timeout for monitored process [2022-11-25 22:35:52,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:35:52,043 INFO L263 TraceCheckSpWp]: Trace formula consists of 382 conjuncts, 31 conjunts are in the unsatisfiable core [2022-11-25 22:35:52,046 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:35:52,517 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 11 treesize of output 7 [2022-11-25 22:35:52,527 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 11 treesize of output 7 [2022-11-25 22:35:52,883 INFO L321 Elim1Store]: treesize reduction 19, result has 47.2 percent of original size [2022-11-25 22:35:52,883 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 16 treesize of output 26 [2022-11-25 22:35:52,923 INFO L321 Elim1Store]: treesize reduction 6, result has 57.1 percent of original size [2022-11-25 22:35:52,923 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 17 treesize of output 17 [2022-11-25 22:35:53,245 INFO L321 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2022-11-25 22:35:53,245 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 35 treesize of output 26 [2022-11-25 22:35:53,296 INFO L321 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2022-11-25 22:35:53,297 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 20 [2022-11-25 22:35:53,593 INFO L321 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2022-11-25 22:35:53,594 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 40 treesize of output 16 [2022-11-25 22:35:53,603 INFO L321 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2022-11-25 22:35:53,603 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 10 [2022-11-25 22:35:53,612 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-25 22:35:53,612 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 22:35:55,614 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 36 treesize of output 28 [2022-11-25 22:35:55,641 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 66 treesize of output 62 [2022-11-25 22:35:55,646 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 102 treesize of output 94 [2022-11-25 22:36:39,658 WARN L233 SmtUtils]: Spent 39.53s on a formula simplification. DAG size of input: 69 DAG size of output: 45 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 22:36:39,961 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-25 22:36:39,961 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 175 treesize of output 209 [2022-11-25 22:36:40,378 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-25 22:36:40,379 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 163 treesize of output 253 [2022-11-25 22:36:42,831 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-25 22:36:42,832 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [94756603] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 22:36:42,832 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2043589374] [2022-11-25 22:36:42,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:36:42,832 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 22:36:42,832 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 22:36:42,835 INFO L229 MonitoredProcess]: Starting monitored process 79 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 22:36:42,836 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Waiting until timeout for monitored process [2022-11-25 22:36:43,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:36:43,463 INFO L263 TraceCheckSpWp]: Trace formula consists of 382 conjuncts, 30 conjunts are in the unsatisfiable core [2022-11-25 22:36:43,465 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:36:43,612 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 11 treesize of output 7 [2022-11-25 22:36:43,626 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 11 treesize of output 7 [2022-11-25 22:36:43,825 INFO L321 Elim1Store]: treesize reduction 6, result has 57.1 percent of original size [2022-11-25 22:36:43,826 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 17 treesize of output 17 [2022-11-25 22:36:43,841 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 16 treesize of output 18 [2022-11-25 22:36:43,932 INFO L321 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2022-11-25 22:36:43,932 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 35 treesize of output 26 [2022-11-25 22:36:43,979 INFO L321 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2022-11-25 22:36:43,980 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 20 [2022-11-25 22:36:44,109 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 31 treesize of output 13 [2022-11-25 22:36:44,119 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 19 treesize of output 7 [2022-11-25 22:36:44,124 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-25 22:36:44,124 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 22:36:44,770 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 36 treesize of output 28 [2022-11-25 22:36:44,798 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 66 treesize of output 62 [2022-11-25 22:36:44,804 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 102 treesize of output 94 [2022-11-25 22:37:07,607 WARN L233 SmtUtils]: Spent 11.75s on a formula simplification. DAG size of input: 61 DAG size of output: 28 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 22:37:07,784 INFO L321 Elim1Store]: treesize reduction 7, result has 77.4 percent of original size [2022-11-25 22:37:07,784 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 46 treesize of output 63 [2022-11-25 22:37:07,796 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 53 treesize of output 49 [2022-11-25 22:37:08,014 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-25 22:37:08,014 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2043589374] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 22:37:08,014 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-25 22:37:08,015 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 9, 8, 8, 8] total 24 [2022-11-25 22:37:08,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285547458] [2022-11-25 22:37:08,015 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-25 22:37:08,015 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-11-25 22:37:08,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-25 22:37:08,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-11-25 22:37:08,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=514, Unknown=5, NotChecked=0, Total=600 [2022-11-25 22:37:08,016 INFO L87 Difference]: Start difference. First operand 358 states and 404 transitions. Second operand has 25 states, 24 states have (on average 4.791666666666667) internal successors, (115), 25 states have internal predecessors, (115), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-25 22:37:14,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:37:14,291 INFO L93 Difference]: Finished difference Result 386 states and 435 transitions. [2022-11-25 22:37:14,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-25 22:37:14,293 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 4.791666666666667) internal successors, (115), 25 states have internal predecessors, (115), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 65 [2022-11-25 22:37:14,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:37:14,295 INFO L225 Difference]: With dead ends: 386 [2022-11-25 22:37:14,295 INFO L226 Difference]: Without dead ends: 386 [2022-11-25 22:37:14,295 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 391 GetRequests, 358 SyntacticMatches, 3 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 209 ImplicationChecksByTransitivity, 106.8s TimeCoverageRelationStatistics Valid=223, Invalid=764, Unknown=5, NotChecked=0, Total=992 [2022-11-25 22:37:14,296 INFO L413 NwaCegarLoop]: 102 mSDtfsCounter, 540 mSDsluCounter, 898 mSDsCounter, 0 mSdLazyCounter, 846 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 540 SdHoareTripleChecker+Valid, 1000 SdHoareTripleChecker+Invalid, 864 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 846 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2022-11-25 22:37:14,296 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [540 Valid, 1000 Invalid, 864 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 846 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2022-11-25 22:37:14,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 386 states. [2022-11-25 22:37:14,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 386 to 357. [2022-11-25 22:37:14,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 357 states, 316 states have (on average 1.2025316455696202) internal successors, (380), 343 states have internal predecessors, (380), 4 states have call successors, (4), 2 states have call predecessors, (4), 9 states have return successors, (18), 11 states have call predecessors, (18), 4 states have call successors, (18) [2022-11-25 22:37:14,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 357 states to 357 states and 402 transitions. [2022-11-25 22:37:14,318 INFO L78 Accepts]: Start accepts. Automaton has 357 states and 402 transitions. Word has length 65 [2022-11-25 22:37:14,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:37:14,318 INFO L495 AbstractCegarLoop]: Abstraction has 357 states and 402 transitions. [2022-11-25 22:37:14,318 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 4.791666666666667) internal successors, (115), 25 states have internal predecessors, (115), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-25 22:37:14,319 INFO L276 IsEmpty]: Start isEmpty. Operand 357 states and 402 transitions. [2022-11-25 22:37:14,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-25 22:37:14,319 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:37:14,319 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 22:37:14,338 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/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 (77)] Forceful destruction successful, exit code 0 [2022-11-25 22:37:14,532 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (78)] Forceful destruction successful, exit code 0 [2022-11-25 22:37:14,727 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Forceful destruction successful, exit code 0 [2022-11-25 22:37:14,921 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 77 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,78 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt,79 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 22:37:14,921 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_dataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-11-25 22:37:14,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:37:14,921 INFO L85 PathProgramCache]: Analyzing trace with hash -1286364406, now seen corresponding path program 1 times [2022-11-25 22:37:14,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-25 22:37:14,922 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [24595759] [2022-11-25 22:37:14,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:37:14,922 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 [2022-11-25 22:37:14,922 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/mathsat [2022-11-25 22:37:14,923 INFO L229 MonitoredProcess]: Starting monitored process 80 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/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) [2022-11-25 22:37:14,924 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/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 (80)] Waiting until timeout for monitored process [2022-11-25 22:37:15,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:37:15,861 INFO L263 TraceCheckSpWp]: Trace formula consists of 473 conjuncts, 27 conjunts are in the unsatisfiable core [2022-11-25 22:37:15,863 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:37:15,983 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 [2022-11-25 22:37:16,130 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 11 treesize of output 7 [2022-11-25 22:37:16,275 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-25 22:37:16,276 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 26 [2022-11-25 22:37:16,297 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 11 treesize of output 7 [2022-11-25 22:37:16,469 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 [2022-11-25 22:37:16,540 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-25 22:37:16,540 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 29 [2022-11-25 22:37:16,588 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-25 22:37:16,588 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 22:37:16,588 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-25 22:37:16,588 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [24595759] [2022-11-25 22:37:16,588 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [24595759] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:37:16,588 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 22:37:16,588 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-25 22:37:16,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048349342] [2022-11-25 22:37:16,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:37:16,589 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-25 22:37:16,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-25 22:37:16,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-25 22:37:16,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2022-11-25 22:37:16,590 INFO L87 Difference]: Start difference. First operand 357 states and 402 transitions. Second operand has 12 states, 11 states have (on average 4.818181818181818) internal successors, (53), 11 states have internal predecessors, (53), 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) [2022-11-25 22:37:19,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:37:19,178 INFO L93 Difference]: Finished difference Result 416 states and 486 transitions. [2022-11-25 22:37:19,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-25 22:37:19,179 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.818181818181818) internal successors, (53), 11 states have internal predecessors, (53), 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 65 [2022-11-25 22:37:19,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:37:19,180 INFO L225 Difference]: With dead ends: 416 [2022-11-25 22:37:19,180 INFO L226 Difference]: Without dead ends: 416 [2022-11-25 22:37:19,180 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=86, Invalid=334, Unknown=0, NotChecked=0, Total=420 [2022-11-25 22:37:19,181 INFO L413 NwaCegarLoop]: 93 mSDtfsCounter, 223 mSDsluCounter, 528 mSDsCounter, 0 mSdLazyCounter, 679 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 224 SdHoareTripleChecker+Valid, 621 SdHoareTripleChecker+Invalid, 687 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 679 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-11-25 22:37:19,181 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [224 Valid, 621 Invalid, 687 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 679 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-11-25 22:37:19,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 416 states. [2022-11-25 22:37:19,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 416 to 367. [2022-11-25 22:37:19,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 367 states, 326 states have (on average 1.2085889570552146) internal successors, (394), 353 states have internal predecessors, (394), 4 states have call successors, (4), 2 states have call predecessors, (4), 9 states have return successors, (18), 11 states have call predecessors, (18), 4 states have call successors, (18) [2022-11-25 22:37:19,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 367 states to 367 states and 416 transitions. [2022-11-25 22:37:19,189 INFO L78 Accepts]: Start accepts. Automaton has 367 states and 416 transitions. Word has length 65 [2022-11-25 22:37:19,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:37:19,190 INFO L495 AbstractCegarLoop]: Abstraction has 367 states and 416 transitions. [2022-11-25 22:37:19,190 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.818181818181818) internal successors, (53), 11 states have internal predecessors, (53), 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) [2022-11-25 22:37:19,190 INFO L276 IsEmpty]: Start isEmpty. Operand 367 states and 416 transitions. [2022-11-25 22:37:19,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-25 22:37:19,191 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:37:19,191 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 22:37:19,216 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/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 (80)] Forceful destruction successful, exit code 0 [2022-11-25 22:37:19,411 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 80 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/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 [2022-11-25 22:37:19,412 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr25REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_dataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-11-25 22:37:19,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:37:19,412 INFO L85 PathProgramCache]: Analyzing trace with hash -1286364405, now seen corresponding path program 1 times [2022-11-25 22:37:19,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-25 22:37:19,413 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1960434074] [2022-11-25 22:37:19,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:37:19,413 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 [2022-11-25 22:37:19,413 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/mathsat [2022-11-25 22:37:19,414 INFO L229 MonitoredProcess]: Starting monitored process 81 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/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) [2022-11-25 22:37:19,420 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/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 (81)] Waiting until timeout for monitored process [2022-11-25 22:37:20,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:37:20,373 INFO L263 TraceCheckSpWp]: Trace formula consists of 473 conjuncts, 37 conjunts are in the unsatisfiable core [2022-11-25 22:37:20,375 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:37:20,379 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 [2022-11-25 22:37:20,409 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-25 22:37:20,410 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 [2022-11-25 22:37:20,538 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 [2022-11-25 22:37:20,799 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-25 22:37:20,820 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-25 22:37:20,935 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-25 22:37:20,949 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-25 22:37:21,212 INFO L321 Elim1Store]: treesize reduction 29, result has 9.4 percent of original size [2022-11-25 22:37:21,212 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 63 treesize of output 37 [2022-11-25 22:37:21,230 INFO L321 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-11-25 22:37:21,231 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 16 [2022-11-25 22:37:21,275 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-25 22:37:21,276 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 22:37:21,276 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-25 22:37:21,276 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1960434074] [2022-11-25 22:37:21,276 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1960434074] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:37:21,276 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 22:37:21,277 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-25 22:37:21,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434031361] [2022-11-25 22:37:21,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:37:21,277 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-25 22:37:21,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-25 22:37:21,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-25 22:37:21,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2022-11-25 22:37:21,278 INFO L87 Difference]: Start difference. First operand 367 states and 416 transitions. Second operand has 12 states, 11 states have (on average 4.818181818181818) internal successors, (53), 11 states have internal predecessors, (53), 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) [2022-11-25 22:37:24,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:37:24,286 INFO L93 Difference]: Finished difference Result 451 states and 500 transitions. [2022-11-25 22:37:24,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-25 22:37:24,288 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.818181818181818) internal successors, (53), 11 states have internal predecessors, (53), 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 65 [2022-11-25 22:37:24,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:37:24,289 INFO L225 Difference]: With dead ends: 451 [2022-11-25 22:37:24,289 INFO L226 Difference]: Without dead ends: 451 [2022-11-25 22:37:24,289 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=91, Invalid=371, Unknown=0, NotChecked=0, Total=462 [2022-11-25 22:37:24,290 INFO L413 NwaCegarLoop]: 78 mSDtfsCounter, 446 mSDsluCounter, 505 mSDsCounter, 0 mSdLazyCounter, 649 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 446 SdHoareTripleChecker+Valid, 583 SdHoareTripleChecker+Invalid, 665 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 649 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-11-25 22:37:24,290 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [446 Valid, 583 Invalid, 665 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 649 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-11-25 22:37:24,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 451 states. [2022-11-25 22:37:24,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 451 to 364. [2022-11-25 22:37:24,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 364 states, 323 states have (on average 1.2074303405572755) internal successors, (390), 350 states have internal predecessors, (390), 4 states have call successors, (4), 2 states have call predecessors, (4), 9 states have return successors, (18), 11 states have call predecessors, (18), 4 states have call successors, (18) [2022-11-25 22:37:24,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 364 states to 364 states and 412 transitions. [2022-11-25 22:37:24,296 INFO L78 Accepts]: Start accepts. Automaton has 364 states and 412 transitions. Word has length 65 [2022-11-25 22:37:24,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:37:24,297 INFO L495 AbstractCegarLoop]: Abstraction has 364 states and 412 transitions. [2022-11-25 22:37:24,297 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.818181818181818) internal successors, (53), 11 states have internal predecessors, (53), 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) [2022-11-25 22:37:24,297 INFO L276 IsEmpty]: Start isEmpty. Operand 364 states and 412 transitions. [2022-11-25 22:37:24,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-11-25 22:37:24,298 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:37:24,298 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 22:37:24,320 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/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 (81)] Forceful destruction successful, exit code 0 [2022-11-25 22:37:24,511 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 81 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/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 [2022-11-25 22:37:24,512 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr36REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_dataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-11-25 22:37:24,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:37:24,512 INFO L85 PathProgramCache]: Analyzing trace with hash 1134284034, now seen corresponding path program 1 times [2022-11-25 22:37:24,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-25 22:37:24,512 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [564709688] [2022-11-25 22:37:24,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:37:24,513 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 [2022-11-25 22:37:24,513 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/mathsat [2022-11-25 22:37:24,513 INFO L229 MonitoredProcess]: Starting monitored process 82 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/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) [2022-11-25 22:37:24,515 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/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 (82)] Waiting until timeout for monitored process [2022-11-25 22:37:25,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:37:25,133 INFO L263 TraceCheckSpWp]: Trace formula consists of 375 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-25 22:37:25,134 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:37:25,228 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 27 treesize of output 19 [2022-11-25 22:37:25,291 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-25 22:37:25,291 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 26 [2022-11-25 22:37:25,344 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-25 22:37:25,344 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 22:37:25,344 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-25 22:37:25,344 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [564709688] [2022-11-25 22:37:25,345 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [564709688] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:37:25,345 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 22:37:25,345 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-25 22:37:25,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748860861] [2022-11-25 22:37:25,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:37:25,345 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-25 22:37:25,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-25 22:37:25,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-25 22:37:25,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-25 22:37:25,346 INFO L87 Difference]: Start difference. First operand 364 states and 412 transitions. Second operand has 8 states, 7 states have (on average 7.714285714285714) internal successors, (54), 8 states have internal predecessors, (54), 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) [2022-11-25 22:37:27,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:37:27,026 INFO L93 Difference]: Finished difference Result 391 states and 441 transitions. [2022-11-25 22:37:27,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-25 22:37:27,027 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 7.714285714285714) internal successors, (54), 8 states have internal predecessors, (54), 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 66 [2022-11-25 22:37:27,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:37:27,029 INFO L225 Difference]: With dead ends: 391 [2022-11-25 22:37:27,029 INFO L226 Difference]: Without dead ends: 391 [2022-11-25 22:37:27,029 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2022-11-25 22:37:27,029 INFO L413 NwaCegarLoop]: 121 mSDtfsCounter, 51 mSDsluCounter, 442 mSDsCounter, 0 mSdLazyCounter, 381 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 563 SdHoareTripleChecker+Invalid, 383 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 381 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-11-25 22:37:27,029 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 563 Invalid, 383 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 381 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-11-25 22:37:27,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 391 states. [2022-11-25 22:37:27,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 391 to 377. [2022-11-25 22:37:27,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 377 states, 336 states have (on average 1.2113095238095237) internal successors, (407), 363 states have internal predecessors, (407), 4 states have call successors, (4), 2 states have call predecessors, (4), 9 states have return successors, (18), 11 states have call predecessors, (18), 4 states have call successors, (18) [2022-11-25 22:37:27,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 429 transitions. [2022-11-25 22:37:27,035 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 429 transitions. Word has length 66 [2022-11-25 22:37:27,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:37:27,035 INFO L495 AbstractCegarLoop]: Abstraction has 377 states and 429 transitions. [2022-11-25 22:37:27,035 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 7.714285714285714) internal successors, (54), 8 states have internal predecessors, (54), 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) [2022-11-25 22:37:27,036 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 429 transitions. [2022-11-25 22:37:27,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-11-25 22:37:27,037 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:37:27,037 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 22:37:27,059 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/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 (82)] Forceful destruction successful, exit code 0 [2022-11-25 22:37:27,259 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 82 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/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 [2022-11-25 22:37:27,259 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr37REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_dataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-11-25 22:37:27,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:37:27,259 INFO L85 PathProgramCache]: Analyzing trace with hash 1134284035, now seen corresponding path program 1 times [2022-11-25 22:37:27,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-25 22:37:27,260 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [624791973] [2022-11-25 22:37:27,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:37:27,260 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 [2022-11-25 22:37:27,260 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/mathsat [2022-11-25 22:37:27,262 INFO L229 MonitoredProcess]: Starting monitored process 83 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/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) [2022-11-25 22:37:27,264 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/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 (83)] Waiting until timeout for monitored process [2022-11-25 22:37:28,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:37:28,040 INFO L263 TraceCheckSpWp]: Trace formula consists of 375 conjuncts, 35 conjunts are in the unsatisfiable core [2022-11-25 22:37:28,043 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:37:28,321 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 11 treesize of output 7 [2022-11-25 22:37:28,410 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 11 treesize of output 7 [2022-11-25 22:37:28,432 INFO L321 Elim1Store]: treesize reduction 29, result has 27.5 percent of original size [2022-11-25 22:37:28,433 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 [2022-11-25 22:37:29,136 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-25 22:37:29,137 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 73 treesize of output 48 [2022-11-25 22:37:29,165 INFO L321 Elim1Store]: treesize reduction 26, result has 10.3 percent of original size [2022-11-25 22:37:29,165 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 41 treesize of output 23 [2022-11-25 22:37:29,284 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-25 22:37:29,284 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 22:37:29,285 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-25 22:37:29,285 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [624791973] [2022-11-25 22:37:29,285 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [624791973] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:37:29,285 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 22:37:29,285 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-11-25 22:37:29,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315934201] [2022-11-25 22:37:29,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:37:29,286 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-25 22:37:29,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-25 22:37:29,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-25 22:37:29,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2022-11-25 22:37:29,286 INFO L87 Difference]: Start difference. First operand 377 states and 429 transitions. Second operand has 16 states, 15 states have (on average 3.6) internal successors, (54), 15 states have internal predecessors, (54), 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) [2022-11-25 22:37:33,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:37:33,526 INFO L93 Difference]: Finished difference Result 452 states and 528 transitions. [2022-11-25 22:37:33,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-25 22:37:33,527 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 3.6) internal successors, (54), 15 states have internal predecessors, (54), 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 66 [2022-11-25 22:37:33,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:37:33,529 INFO L225 Difference]: With dead ends: 452 [2022-11-25 22:37:33,529 INFO L226 Difference]: Without dead ends: 452 [2022-11-25 22:37:33,529 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=181, Invalid=689, Unknown=0, NotChecked=0, Total=870 [2022-11-25 22:37:33,530 INFO L413 NwaCegarLoop]: 94 mSDtfsCounter, 349 mSDsluCounter, 885 mSDsCounter, 0 mSdLazyCounter, 811 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 351 SdHoareTripleChecker+Valid, 979 SdHoareTripleChecker+Invalid, 822 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 811 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-11-25 22:37:33,530 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [351 Valid, 979 Invalid, 822 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 811 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-11-25 22:37:33,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 452 states. [2022-11-25 22:37:33,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 452 to 396. [2022-11-25 22:37:33,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 396 states, 355 states have (on average 1.2140845070422535) internal successors, (431), 382 states have internal predecessors, (431), 4 states have call successors, (4), 2 states have call predecessors, (4), 9 states have return successors, (18), 11 states have call predecessors, (18), 4 states have call successors, (18) [2022-11-25 22:37:33,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 396 states to 396 states and 453 transitions. [2022-11-25 22:37:33,538 INFO L78 Accepts]: Start accepts. Automaton has 396 states and 453 transitions. Word has length 66 [2022-11-25 22:37:33,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:37:33,539 INFO L495 AbstractCegarLoop]: Abstraction has 396 states and 453 transitions. [2022-11-25 22:37:33,539 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 3.6) internal successors, (54), 15 states have internal predecessors, (54), 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) [2022-11-25 22:37:33,539 INFO L276 IsEmpty]: Start isEmpty. Operand 396 states and 453 transitions. [2022-11-25 22:37:33,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-11-25 22:37:33,540 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:37:33,540 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 22:37:33,564 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/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 (83)] Forceful destruction successful, exit code 0 [2022-11-25 22:37:33,756 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 83 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/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 [2022-11-25 22:37:33,756 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_dataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-11-25 22:37:33,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:37:33,757 INFO L85 PathProgramCache]: Analyzing trace with hash -1667627081, now seen corresponding path program 2 times [2022-11-25 22:37:33,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-25 22:37:33,757 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1418237886] [2022-11-25 22:37:33,757 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-25 22:37:33,757 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 [2022-11-25 22:37:33,758 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/mathsat [2022-11-25 22:37:33,758 INFO L229 MonitoredProcess]: Starting monitored process 84 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/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) [2022-11-25 22:37:33,759 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/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 (84)] Waiting until timeout for monitored process [2022-11-25 22:37:34,901 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-25 22:37:34,901 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 22:37:34,933 INFO L263 TraceCheckSpWp]: Trace formula consists of 563 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-25 22:37:34,935 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:37:34,939 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 [2022-11-25 22:37:34,946 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 [2022-11-25 22:37:35,078 WARN L859 $PredicateComparison]: unable to prove that (exists ((create_data_~data~0.base (_ BitVec 32))) (and (= (select |c_old(#valid)| create_data_~data~0.base) (_ bv0 1)) (exists ((v_ArrVal_9572 (_ BitVec 32)) (v_ArrVal_9573 (_ BitVec 32))) (= (store (store |c_old(#length)| create_data_~data~0.base v_ArrVal_9572) |c_create_data_#t~malloc7.base| v_ArrVal_9573) |c_#length|)) (exists ((v_ArrVal_9574 (_ BitVec 1))) (= (select (store |c_old(#valid)| create_data_~data~0.base v_ArrVal_9574) |c_create_data_#t~malloc7.base|) (_ bv0 1))))) is different from true [2022-11-25 22:37:35,100 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_9574 (_ BitVec 1)) (v_ArrVal_9572 (_ BitVec 32)) (v_ArrVal_9573 (_ BitVec 32)) (create_data_~data~0.base (_ BitVec 32)) (|create_data_#t~malloc7.base| (_ BitVec 32))) (and (= (select |c_old(#valid)| create_data_~data~0.base) (_ bv0 1)) (= (select (store |c_old(#valid)| create_data_~data~0.base v_ArrVal_9574) |create_data_#t~malloc7.base|) (_ bv0 1)) (= (store (store |c_old(#length)| create_data_~data~0.base v_ArrVal_9572) |create_data_#t~malloc7.base| v_ArrVal_9573) |c_#length|))) is different from true [2022-11-25 22:37:35,576 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_9574 (_ BitVec 1)) (v_ArrVal_9572 (_ BitVec 32)) (v_ArrVal_9573 (_ BitVec 32)) (create_data_~data~0.base (_ BitVec 32)) (|create_data_#t~malloc7.base| (_ BitVec 32))) (and (= (select |c_old(#valid)| create_data_~data~0.base) (_ bv0 1)) (= (store (store (store |c_old(#length)| create_data_~data~0.base v_ArrVal_9572) |create_data_#t~malloc7.base| v_ArrVal_9573) c_create_data_~nextData~0.base (_ bv16 32)) |c_#length|) (= (select (store |c_old(#valid)| create_data_~data~0.base v_ArrVal_9574) |create_data_#t~malloc7.base|) (_ bv0 1)))) is different from true [2022-11-25 22:37:35,753 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_9574 (_ BitVec 1)) (v_create_data_~data~0.base_168 (_ BitVec 32)) (v_ArrVal_9572 (_ BitVec 32)) (v_ArrVal_9573 (_ BitVec 32)) (create_data_~data~0.base (_ BitVec 32)) (|create_data_#t~malloc7.base| (_ BitVec 32))) (and (= (select |c_old(#valid)| v_create_data_~data~0.base_168) (_ bv0 1)) (= (store (store (store |c_old(#length)| v_create_data_~data~0.base_168 v_ArrVal_9572) |create_data_#t~malloc7.base| v_ArrVal_9573) create_data_~data~0.base (_ bv16 32)) |c_#length|) (= (_ bv0 1) (select (store |c_old(#valid)| v_create_data_~data~0.base_168 v_ArrVal_9574) |create_data_#t~malloc7.base|)))) is different from true [2022-11-25 22:37:35,791 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_9574 (_ BitVec 1)) (v_create_data_~data~0.base_168 (_ BitVec 32)) (v_ArrVal_9572 (_ BitVec 32)) (v_ArrVal_9573 (_ BitVec 32)) (create_data_~data~0.base (_ BitVec 32)) (create_data_~nextData~0.base (_ BitVec 32)) (|create_data_#t~malloc7.base| (_ BitVec 32))) (and (= (select |c_old(#valid)| v_create_data_~data~0.base_168) (_ bv0 1)) (= (store (store (store (store |c_old(#length)| v_create_data_~data~0.base_168 v_ArrVal_9572) |create_data_#t~malloc7.base| v_ArrVal_9573) create_data_~data~0.base (_ bv16 32)) create_data_~nextData~0.base (_ bv16 32)) |c_#length|) (= (_ bv0 1) (select (store |c_old(#valid)| v_create_data_~data~0.base_168 v_ArrVal_9574) |create_data_#t~malloc7.base|)))) is different from true [2022-11-25 22:37:36,103 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:37:36,105 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:37:36,308 INFO L321 Elim1Store]: treesize reduction 99, result has 31.3 percent of original size [2022-11-25 22:37:36,308 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 4 case distinctions, treesize of input 21 treesize of output 53 [2022-11-25 22:37:36,389 INFO L321 Elim1Store]: treesize reduction 17, result has 45.2 percent of original size [2022-11-25 22:37:36,389 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 31 treesize of output 38 [2022-11-25 22:37:36,532 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 13 not checked. [2022-11-25 22:37:36,532 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 22:37:39,109 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-25 22:37:39,109 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1418237886] [2022-11-25 22:37:39,109 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1418237886] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 22:37:39,109 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [970960307] [2022-11-25 22:37:39,109 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-25 22:37:39,109 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-25 22:37:39,109 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/cvc4 [2022-11-25 22:37:39,110 INFO L229 MonitoredProcess]: Starting monitored process 85 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-25 22:37:39,112 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (85)] Waiting until timeout for monitored process [2022-11-25 22:37:40,521 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-25 22:37:40,522 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1115075204] [2022-11-25 22:37:40,522 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-25 22:37:40,522 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 22:37:40,522 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 22:37:40,523 INFO L229 MonitoredProcess]: Starting monitored process 86 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 22:37:40,543 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (86)] Waiting until timeout for monitored process [2022-11-25 22:37:40,549 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (85)] Forceful destruction successful, exit code 1 [2022-11-25 22:37:42,124 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-25 22:37:42,124 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 22:37:42,137 INFO L263 TraceCheckSpWp]: Trace formula consists of 563 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-25 22:37:42,139 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:37:42,144 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 [2022-11-25 22:37:42,151 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 [2022-11-25 22:37:42,651 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_10116 (_ BitVec 32)) (v_ArrVal_10117 (_ BitVec 32)) (create_data_~data~0.base (_ BitVec 32)) (|create_data_#t~malloc7.base| (_ BitVec 32))) (and (= (select |c_old(#valid)| create_data_~data~0.base) (_ bv0 1)) (= (_ bv0 1) (select (store |c_old(#valid)| create_data_~data~0.base (_ bv1 1)) |create_data_#t~malloc7.base|)) (= (store (store |c_old(#length)| create_data_~data~0.base v_ArrVal_10116) |create_data_#t~malloc7.base| v_ArrVal_10117) |c_#length|))) is different from true [2022-11-25 22:37:43,133 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 [2022-11-25 22:37:43,506 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-25 22:37:43,506 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 [2022-11-25 22:37:43,547 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_10116 (_ BitVec 32)) (v_create_data_~data~0.base_176 (_ BitVec 32)) (v_ArrVal_10117 (_ BitVec 32)) (create_data_~data~0.base (_ BitVec 32)) (create_data_~nextData~0.base (_ BitVec 32)) (|create_data_#t~malloc7.base| (_ BitVec 32))) (and (= (select |c_old(#valid)| v_create_data_~data~0.base_176) (_ bv0 1)) (not (= create_data_~nextData~0.base create_data_~data~0.base)) (= (_ bv0 1) (select (store |c_old(#valid)| v_create_data_~data~0.base_176 (_ bv1 1)) |create_data_#t~malloc7.base|)) (= (store (store (store (store |c_old(#length)| v_create_data_~data~0.base_176 v_ArrVal_10116) |create_data_#t~malloc7.base| v_ArrVal_10117) create_data_~data~0.base (_ bv16 32)) create_data_~nextData~0.base (_ bv16 32)) |c_#length|))) is different from true [2022-11-25 22:37:44,036 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:37:44,039 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:37:44,049 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:37:44,223 INFO L321 Elim1Store]: treesize reduction 69, result has 34.9 percent of original size [2022-11-25 22:37:44,224 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 21 treesize of output 50 [2022-11-25 22:37:44,284 INFO L321 Elim1Store]: treesize reduction 22, result has 29.0 percent of original size [2022-11-25 22:37:44,284 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 22 treesize of output 24 [2022-11-25 22:37:44,486 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 13 not checked. [2022-11-25 22:37:44,486 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 22:37:44,762 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 10 treesize of output 8 [2022-11-25 22:37:47,335 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1115075204] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 22:37:47,335 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-25 22:37:47,335 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2022-11-25 22:37:47,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786333055] [2022-11-25 22:37:47,335 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-25 22:37:47,335 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-25 22:37:47,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-25 22:37:47,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-25 22:37:47,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=107, Unknown=8, NotChecked=182, Total=342 [2022-11-25 22:37:47,336 INFO L87 Difference]: Start difference. First operand 396 states and 453 transitions. Second operand has 16 states, 15 states have (on average 6.733333333333333) internal successors, (101), 14 states have internal predecessors, (101), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-25 22:37:47,472 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_10116 (_ BitVec 32)) (v_ArrVal_10117 (_ BitVec 32)) (create_data_~data~0.base (_ BitVec 32)) (|create_data_#t~malloc7.base| (_ BitVec 32))) (and (= (select |c_old(#valid)| create_data_~data~0.base) (_ bv0 1)) (= (_ bv0 1) (select (store |c_old(#valid)| create_data_~data~0.base (_ bv1 1)) |create_data_#t~malloc7.base|)) (= (store (store |c_old(#length)| create_data_~data~0.base v_ArrVal_10116) |create_data_#t~malloc7.base| v_ArrVal_10117) |c_#length|))) (exists ((create_data_~data~0.base (_ BitVec 32))) (and (= (select |c_old(#valid)| create_data_~data~0.base) (_ bv0 1)) (exists ((v_ArrVal_9572 (_ BitVec 32)) (v_ArrVal_9573 (_ BitVec 32))) (= (store (store |c_old(#length)| create_data_~data~0.base v_ArrVal_9572) |c_create_data_#t~malloc7.base| v_ArrVal_9573) |c_#length|)) (exists ((v_ArrVal_9574 (_ BitVec 1))) (= (select (store |c_old(#valid)| create_data_~data~0.base v_ArrVal_9574) |c_create_data_#t~malloc7.base|) (_ bv0 1))))) (exists ((v_ArrVal_10116 (_ BitVec 32)) (v_create_data_~data~0.base_176 (_ BitVec 32)) (v_ArrVal_10117 (_ BitVec 32)) (create_data_~data~0.base (_ BitVec 32)) (|create_data_#t~malloc7.base| (_ BitVec 32))) (and (= (store (store (store |c_old(#length)| v_create_data_~data~0.base_176 v_ArrVal_10116) |create_data_#t~malloc7.base| v_ArrVal_10117) create_data_~data~0.base (_ bv16 32)) |c_#length|) (= (_ bv0 1) (bvadd (select |c_#valid| create_data_~data~0.base) (_ bv1 1))) (= (select |c_old(#valid)| v_create_data_~data~0.base_176) (_ bv0 1)) (= (_ bv0 1) (select (store |c_old(#valid)| v_create_data_~data~0.base_176 (_ bv1 1)) |create_data_#t~malloc7.base|))))) is different from true [2022-11-25 22:37:47,480 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_10116 (_ BitVec 32)) (v_ArrVal_10117 (_ BitVec 32)) (create_data_~data~0.base (_ BitVec 32)) (|create_data_#t~malloc7.base| (_ BitVec 32))) (and (= (select |c_old(#valid)| create_data_~data~0.base) (_ bv0 1)) (= (_ bv0 1) (select (store |c_old(#valid)| create_data_~data~0.base (_ bv1 1)) |create_data_#t~malloc7.base|)) (= (store (store |c_old(#length)| create_data_~data~0.base v_ArrVal_10116) |create_data_#t~malloc7.base| v_ArrVal_10117) |c_#length|))) (exists ((v_ArrVal_9574 (_ BitVec 1)) (v_ArrVal_9572 (_ BitVec 32)) (v_ArrVal_9573 (_ BitVec 32)) (create_data_~data~0.base (_ BitVec 32)) (|create_data_#t~malloc7.base| (_ BitVec 32))) (and (= (select |c_old(#valid)| create_data_~data~0.base) (_ bv0 1)) (= (select (store |c_old(#valid)| create_data_~data~0.base v_ArrVal_9574) |create_data_#t~malloc7.base|) (_ bv0 1)) (= (store (store |c_old(#length)| create_data_~data~0.base v_ArrVal_9572) |create_data_#t~malloc7.base| v_ArrVal_9573) |c_#length|)))) is different from true [2022-11-25 22:37:48,325 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_9574 (_ BitVec 1)) (v_create_data_~data~0.base_168 (_ BitVec 32)) (v_ArrVal_9572 (_ BitVec 32)) (v_ArrVal_9573 (_ BitVec 32)) (create_data_~data~0.base (_ BitVec 32)) (create_data_~nextData~0.base (_ BitVec 32)) (|create_data_#t~malloc7.base| (_ BitVec 32))) (and (= (select |c_old(#valid)| v_create_data_~data~0.base_168) (_ bv0 1)) (= (store (store (store (store |c_old(#length)| v_create_data_~data~0.base_168 v_ArrVal_9572) |create_data_#t~malloc7.base| v_ArrVal_9573) create_data_~data~0.base (_ bv16 32)) create_data_~nextData~0.base (_ bv16 32)) |c_#length|) (= (_ bv0 1) (select (store |c_old(#valid)| v_create_data_~data~0.base_168 v_ArrVal_9574) |create_data_#t~malloc7.base|)))) (exists ((v_ArrVal_10116 (_ BitVec 32)) (v_create_data_~data~0.base_176 (_ BitVec 32)) (v_ArrVal_10117 (_ BitVec 32)) (create_data_~data~0.base (_ BitVec 32)) (create_data_~nextData~0.base (_ BitVec 32)) (|create_data_#t~malloc7.base| (_ BitVec 32))) (and (= (select |c_old(#valid)| v_create_data_~data~0.base_176) (_ bv0 1)) (not (= create_data_~nextData~0.base create_data_~data~0.base)) (= (_ bv0 1) (select (store |c_old(#valid)| v_create_data_~data~0.base_176 (_ bv1 1)) |create_data_#t~malloc7.base|)) (= (store (store (store (store |c_old(#length)| v_create_data_~data~0.base_176 v_ArrVal_10116) |create_data_#t~malloc7.base| v_ArrVal_10117) create_data_~data~0.base (_ bv16 32)) create_data_~nextData~0.base (_ bv16 32)) |c_#length|)))) is different from true [2022-11-25 22:37:51,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:37:51,381 INFO L93 Difference]: Finished difference Result 834 states and 948 transitions. [2022-11-25 22:37:51,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-25 22:37:51,382 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 6.733333333333333) internal successors, (101), 14 states have internal predecessors, (101), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 66 [2022-11-25 22:37:51,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:37:51,384 INFO L225 Difference]: With dead ends: 834 [2022-11-25 22:37:51,384 INFO L226 Difference]: Without dead ends: 834 [2022-11-25 22:37:51,384 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 117 SyntacticMatches, 3 SemanticMatches, 22 ConstructedPredicates, 10 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 5.9s TimeCoverageRelationStatistics Valid=65, Invalid=146, Unknown=11, NotChecked=330, Total=552 [2022-11-25 22:37:51,385 INFO L413 NwaCegarLoop]: 265 mSDtfsCounter, 266 mSDsluCounter, 677 mSDsCounter, 0 mSdLazyCounter, 815 mSolverCounterSat, 13 mSolverCounterUnsat, 10 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 266 SdHoareTripleChecker+Valid, 942 SdHoareTripleChecker+Invalid, 3779 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 815 IncrementalHoareTripleChecker+Invalid, 10 IncrementalHoareTripleChecker+Unknown, 2941 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2022-11-25 22:37:51,385 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [266 Valid, 942 Invalid, 3779 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 815 Invalid, 10 Unknown, 2941 Unchecked, 3.7s Time] [2022-11-25 22:37:51,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 834 states. [2022-11-25 22:37:51,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 834 to 433. [2022-11-25 22:37:51,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 433 states, 391 states have (on average 1.2020460358056266) internal successors, (470), 418 states have internal predecessors, (470), 4 states have call successors, (4), 2 states have call predecessors, (4), 10 states have return successors, (20), 12 states have call predecessors, (20), 4 states have call successors, (20) [2022-11-25 22:37:51,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 433 states to 433 states and 494 transitions. [2022-11-25 22:37:51,395 INFO L78 Accepts]: Start accepts. Automaton has 433 states and 494 transitions. Word has length 66 [2022-11-25 22:37:51,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:37:51,395 INFO L495 AbstractCegarLoop]: Abstraction has 433 states and 494 transitions. [2022-11-25 22:37:51,396 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 6.733333333333333) internal successors, (101), 14 states have internal predecessors, (101), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-25 22:37:51,396 INFO L276 IsEmpty]: Start isEmpty. Operand 433 states and 494 transitions. [2022-11-25 22:37:51,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-11-25 22:37:51,397 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:37:51,397 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 22:37:51,423 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/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 (84)] Forceful destruction successful, exit code 0 [2022-11-25 22:37:51,620 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (86)] Forceful destruction successful, exit code 0 [2022-11-25 22:37:51,810 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 84 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,86 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 22:37:51,811 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_FREE === [create_dataErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_dataErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-11-25 22:37:51,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:37:51,811 INFO L85 PathProgramCache]: Analyzing trace with hash 803066894, now seen corresponding path program 1 times [2022-11-25 22:37:51,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-25 22:37:51,812 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1384756202] [2022-11-25 22:37:51,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:37:51,812 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 [2022-11-25 22:37:51,812 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/mathsat [2022-11-25 22:37:51,813 INFO L229 MonitoredProcess]: Starting monitored process 87 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/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) [2022-11-25 22:37:51,817 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebae157f-5e5f-4de5-99ca-7756fab7e1c2/bin/utaipan-ByfvJB40ur/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 (87)] Waiting until timeout for monitored process [2022-11-25 22:37:52,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:37:52,723 INFO L263 TraceCheckSpWp]: Trace formula consists of 381 conjuncts, 67 conjunts are in the unsatisfiable core [2022-11-25 22:37:52,728 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:37:52,734 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 [2022-11-25 22:37:52,790 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-25 22:37:52,790 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 [2022-11-25 22:37:53,045 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 13 treesize of output 9 [2022-11-25 22:37:53,057 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 13 treesize of output 9 [2022-11-25 22:37:53,249 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-25 22:37:53,250 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 40 [2022-11-25 22:37:53,260 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:37:53,261 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 24 [2022-11-25 22:37:53,360 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-25 22:37:53,360 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 40 [2022-11-25 22:37:53,370 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:37:53,376 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 24 [2022-11-25 22:37:53,444 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 24 treesize of output 12 [2022-11-25 22:37:53,501 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:37:53,504 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-25 22:37:55,620 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:37:55,621 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:37:55,623 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:37:55,624 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 22:37:55,625 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 47 [2022-11-25 22:37:55,746 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 49 [2022-11-25 22:37:55,761 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-25 22:37:57,978 INFO L321 Elim1Store]: treesize reduction 34, result has 33.3 percent of original size [2022-11-25 22:37:57,979 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 29 treesize of output 37 [2022-11-25 22:37:58,110 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-25 22:37:58,124 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-25 22:37:58,293 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2022-11-25 22:37:58,302 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 34 [2022-11-25 22:37:59,034 INFO L321 Elim1Store]: treesize reduction 15, result has 6.3 percent of original size [2022-11-25 22:37:59,034 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 109 treesize of output 48 [2022-11-25 22:37:59,358 INFO L321 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-11-25 22:37:59,358 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 21 [2022-11-25 22:37:59,413 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-25 22:37:59,414 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 22:38:00,441 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-25 22:38:00,442 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 6534 treesize of output 6167