./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/memsafety/test-0102-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version e04fb08f Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6289e30a-84ce-488a-9a79-4a100fa2c467/bin/utaipan-Xvt2sAort0/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6289e30a-84ce-488a-9a79-4a100fa2c467/bin/utaipan-Xvt2sAort0/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6289e30a-84ce-488a-9a79-4a100fa2c467/bin/utaipan-Xvt2sAort0/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6289e30a-84ce-488a-9a79-4a100fa2c467/bin/utaipan-Xvt2sAort0/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety/test-0102-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6289e30a-84ce-488a-9a79-4a100fa2c467/bin/utaipan-Xvt2sAort0/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6289e30a-84ce-488a-9a79-4a100fa2c467/bin/utaipan-Xvt2sAort0 --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 fa260939b291574cde59d3c10d7828de68c26744f55119227115b01940792a6f --- 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-e04fb08 [2022-11-16 16:28:45,378 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 16:28:45,381 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 16:28:45,423 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 16:28:45,424 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 16:28:45,428 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 16:28:45,430 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 16:28:45,434 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 16:28:45,435 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 16:28:45,441 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 16:28:45,442 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 16:28:45,443 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 16:28:45,443 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 16:28:45,444 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 16:28:45,445 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 16:28:45,446 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 16:28:45,447 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 16:28:45,447 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 16:28:45,449 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 16:28:45,457 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 16:28:45,460 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 16:28:45,464 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 16:28:45,468 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 16:28:45,469 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 16:28:45,480 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 16:28:45,480 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 16:28:45,481 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 16:28:45,482 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 16:28:45,482 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 16:28:45,486 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 16:28:45,486 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 16:28:45,488 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 16:28:45,490 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 16:28:45,491 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 16:28:45,492 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 16:28:45,492 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 16:28:45,493 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 16:28:45,493 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 16:28:45,494 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 16:28:45,495 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 16:28:45,495 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 16:28:45,497 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6289e30a-84ce-488a-9a79-4a100fa2c467/bin/utaipan-Xvt2sAort0/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2022-11-16 16:28:45,548 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 16:28:45,548 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 16:28:45,549 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 16:28:45,549 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 16:28:45,550 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 16:28:45,550 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 16:28:45,551 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-16 16:28:45,551 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-16 16:28:45,551 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-16 16:28:45,551 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-16 16:28:45,553 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-16 16:28:45,553 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-16 16:28:45,553 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-16 16:28:45,554 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-16 16:28:45,554 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-16 16:28:45,554 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-16 16:28:45,554 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-16 16:28:45,555 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-16 16:28:45,555 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 16:28:45,556 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 16:28:45,556 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 16:28:45,556 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 16:28:45,556 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-16 16:28:45,557 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 16:28:45,557 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 16:28:45,557 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 16:28:45,563 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-16 16:28:45,563 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-16 16:28:45,563 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-16 16:28:45,564 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 16:28:45,564 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-16 16:28:45,564 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 16:28:45,564 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 16:28:45,564 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 16:28:45,565 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 16:28:45,565 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 16:28:45,565 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 16:28:45,565 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-16 16:28:45,565 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 16:28:45,566 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-16 16:28:45,566 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 16:28:45,566 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-16 16:28:45,566 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_6289e30a-84ce-488a-9a79-4a100fa2c467/bin/utaipan-Xvt2sAort0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6289e30a-84ce-488a-9a79-4a100fa2c467/bin/utaipan-Xvt2sAort0 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fa260939b291574cde59d3c10d7828de68c26744f55119227115b01940792a6f [2022-11-16 16:28:45,875 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 16:28:45,912 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 16:28:45,917 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 16:28:45,918 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 16:28:45,923 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 16:28:45,924 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6289e30a-84ce-488a-9a79-4a100fa2c467/bin/utaipan-Xvt2sAort0/../../sv-benchmarks/c/memsafety/test-0102-1.i [2022-11-16 16:28:45,994 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6289e30a-84ce-488a-9a79-4a100fa2c467/bin/utaipan-Xvt2sAort0/data/99557875f/6777572cfd5f4575ac2866062ae6c66f/FLAG8071e02f9 [2022-11-16 16:28:46,581 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 16:28:46,587 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6289e30a-84ce-488a-9a79-4a100fa2c467/sv-benchmarks/c/memsafety/test-0102-1.i [2022-11-16 16:28:46,609 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6289e30a-84ce-488a-9a79-4a100fa2c467/bin/utaipan-Xvt2sAort0/data/99557875f/6777572cfd5f4575ac2866062ae6c66f/FLAG8071e02f9 [2022-11-16 16:28:46,840 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6289e30a-84ce-488a-9a79-4a100fa2c467/bin/utaipan-Xvt2sAort0/data/99557875f/6777572cfd5f4575ac2866062ae6c66f [2022-11-16 16:28:46,864 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 16:28:46,867 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 16:28:46,870 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 16:28:46,870 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 16:28:46,874 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 16:28:46,875 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 04:28:46" (1/1) ... [2022-11-16 16:28:46,878 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@178caed8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:28:46, skipping insertion in model container [2022-11-16 16:28:46,878 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 04:28:46" (1/1) ... [2022-11-16 16:28:46,886 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 16:28:46,952 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 16:28:47,394 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 16:28:47,405 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) [2022-11-16 16:28:47,406 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@4299c2a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:28:47, skipping insertion in model container [2022-11-16 16:28:47,407 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 16:28:47,407 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2022-11-16 16:28:47,410 INFO L158 Benchmark]: Toolchain (without parser) took 541.83ms. Allocated memory is still 115.3MB. Free memory was 92.1MB in the beginning and 86.3MB in the end (delta: 5.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-16 16:28:47,411 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 115.3MB. Free memory is still 85.5MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 16:28:47,412 INFO L158 Benchmark]: CACSL2BoogieTranslator took 537.41ms. Allocated memory is still 115.3MB. Free memory was 92.1MB in the beginning and 86.6MB in the end (delta: 5.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-16 16:28:47,413 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30ms. Allocated memory is still 115.3MB. Free memory is still 85.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 537.41ms. Allocated memory is still 115.3MB. Free memory was 92.1MB in the beginning and 86.6MB in the end (delta: 5.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 551]: 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-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6289e30a-84ce-488a-9a79-4a100fa2c467/bin/utaipan-Xvt2sAort0/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6289e30a-84ce-488a-9a79-4a100fa2c467/bin/utaipan-Xvt2sAort0/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6289e30a-84ce-488a-9a79-4a100fa2c467/bin/utaipan-Xvt2sAort0/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6289e30a-84ce-488a-9a79-4a100fa2c467/bin/utaipan-Xvt2sAort0/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety/test-0102-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6289e30a-84ce-488a-9a79-4a100fa2c467/bin/utaipan-Xvt2sAort0/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6289e30a-84ce-488a-9a79-4a100fa2c467/bin/utaipan-Xvt2sAort0 --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 fa260939b291574cde59d3c10d7828de68c26744f55119227115b01940792a6f --- 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-e04fb08 [2022-11-16 16:28:49,965 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 16:28:49,969 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 16:28:50,016 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 16:28:50,017 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 16:28:50,023 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 16:28:50,026 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 16:28:50,030 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 16:28:50,033 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 16:28:50,043 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 16:28:50,045 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 16:28:50,047 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 16:28:50,048 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 16:28:50,051 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 16:28:50,053 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 16:28:50,055 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 16:28:50,057 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 16:28:50,059 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 16:28:50,066 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 16:28:50,072 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 16:28:50,075 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 16:28:50,077 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 16:28:50,080 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 16:28:50,082 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 16:28:50,094 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 16:28:50,095 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 16:28:50,096 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 16:28:50,097 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 16:28:50,099 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 16:28:50,100 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 16:28:50,101 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 16:28:50,102 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 16:28:50,104 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 16:28:50,106 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 16:28:50,108 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 16:28:50,108 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 16:28:50,109 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 16:28:50,110 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 16:28:50,110 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 16:28:50,112 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 16:28:50,114 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 16:28:50,115 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6289e30a-84ce-488a-9a79-4a100fa2c467/bin/utaipan-Xvt2sAort0/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2022-11-16 16:28:50,182 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 16:28:50,183 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 16:28:50,184 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 16:28:50,185 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 16:28:50,186 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 16:28:50,186 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 16:28:50,186 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-16 16:28:50,187 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-16 16:28:50,187 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-16 16:28:50,187 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-16 16:28:50,188 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-16 16:28:50,189 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-16 16:28:50,191 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 16:28:50,191 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 16:28:50,191 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 16:28:50,192 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 16:28:50,192 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-16 16:28:50,192 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 16:28:50,192 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 16:28:50,193 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 16:28:50,193 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-16 16:28:50,193 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-16 16:28:50,194 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-16 16:28:50,194 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 16:28:50,194 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-16 16:28:50,194 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-16 16:28:50,195 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-16 16:28:50,195 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 16:28:50,195 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 16:28:50,195 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 16:28:50,196 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 16:28:50,197 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 16:28:50,197 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 16:28:50,197 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 16:28:50,198 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 16:28:50,198 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-11-16 16:28:50,198 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-16 16:28:50,198 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-16 16:28:50,199 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-16 16:28:50,199 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_6289e30a-84ce-488a-9a79-4a100fa2c467/bin/utaipan-Xvt2sAort0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6289e30a-84ce-488a-9a79-4a100fa2c467/bin/utaipan-Xvt2sAort0 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fa260939b291574cde59d3c10d7828de68c26744f55119227115b01940792a6f [2022-11-16 16:28:50,702 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 16:28:50,733 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 16:28:50,736 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 16:28:50,737 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 16:28:50,739 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 16:28:50,741 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6289e30a-84ce-488a-9a79-4a100fa2c467/bin/utaipan-Xvt2sAort0/../../sv-benchmarks/c/memsafety/test-0102-1.i [2022-11-16 16:28:50,827 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6289e30a-84ce-488a-9a79-4a100fa2c467/bin/utaipan-Xvt2sAort0/data/7a0b4e9f2/b88db49c74a0470b9de14b0b4fd7e993/FLAGd27da0692 [2022-11-16 16:28:51,624 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 16:28:51,631 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6289e30a-84ce-488a-9a79-4a100fa2c467/sv-benchmarks/c/memsafety/test-0102-1.i [2022-11-16 16:28:51,644 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6289e30a-84ce-488a-9a79-4a100fa2c467/bin/utaipan-Xvt2sAort0/data/7a0b4e9f2/b88db49c74a0470b9de14b0b4fd7e993/FLAGd27da0692 [2022-11-16 16:28:51,833 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6289e30a-84ce-488a-9a79-4a100fa2c467/bin/utaipan-Xvt2sAort0/data/7a0b4e9f2/b88db49c74a0470b9de14b0b4fd7e993 [2022-11-16 16:28:51,837 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 16:28:51,840 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 16:28:51,843 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 16:28:51,843 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 16:28:51,849 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 16:28:51,850 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 04:28:51" (1/1) ... [2022-11-16 16:28:51,852 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@73a9083c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:28:51, skipping insertion in model container [2022-11-16 16:28:51,852 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 04:28:51" (1/1) ... [2022-11-16 16:28:51,861 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 16:28:51,928 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 16:28:52,481 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 16:28:52,504 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-11-16 16:28:52,525 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 16:28:52,587 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 16:28:52,605 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 16:28:52,677 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 16:28:52,714 INFO L208 MainTranslator]: Completed translation [2022-11-16 16:28:52,715 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:28:52 WrapperNode [2022-11-16 16:28:52,715 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 16:28:52,716 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 16:28:52,717 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 16:28:52,717 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 16:28:52,726 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:28:52" (1/1) ... [2022-11-16 16:28:52,752 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:28:52" (1/1) ... [2022-11-16 16:28:52,800 INFO L138 Inliner]: procedures = 136, calls = 38, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 86 [2022-11-16 16:28:52,801 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 16:28:52,803 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 16:28:52,803 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 16:28:52,804 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 16:28:52,815 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:28:52" (1/1) ... [2022-11-16 16:28:52,815 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:28:52" (1/1) ... [2022-11-16 16:28:52,837 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:28:52" (1/1) ... [2022-11-16 16:28:52,838 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:28:52" (1/1) ... [2022-11-16 16:28:52,849 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:28:52" (1/1) ... [2022-11-16 16:28:52,868 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:28:52" (1/1) ... [2022-11-16 16:28:52,871 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:28:52" (1/1) ... [2022-11-16 16:28:52,873 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:28:52" (1/1) ... [2022-11-16 16:28:52,876 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 16:28:52,877 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 16:28:52,878 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 16:28:52,878 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 16:28:52,879 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:28:52" (1/1) ... [2022-11-16 16:28:52,886 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 16:28:52,916 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6289e30a-84ce-488a-9a79-4a100fa2c467/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 16:28:52,932 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6289e30a-84ce-488a-9a79-4a100fa2c467/bin/utaipan-Xvt2sAort0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 16:28:52,934 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6289e30a-84ce-488a-9a79-4a100fa2c467/bin/utaipan-Xvt2sAort0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 16:28:52,987 INFO L130 BoogieDeclarations]: Found specification of procedure list_add_tail [2022-11-16 16:28:52,988 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add_tail [2022-11-16 16:28:52,988 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-16 16:28:52,988 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 16:28:52,988 INFO L130 BoogieDeclarations]: Found specification of procedure create_sub_list [2022-11-16 16:28:52,988 INFO L138 BoogieDeclarations]: Found implementation of procedure create_sub_list [2022-11-16 16:28:52,989 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-16 16:28:52,989 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-16 16:28:52,989 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-16 16:28:52,989 INFO L130 BoogieDeclarations]: Found specification of procedure destroy_sub [2022-11-16 16:28:52,990 INFO L138 BoogieDeclarations]: Found implementation of procedure destroy_sub [2022-11-16 16:28:52,990 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-11-16 16:28:52,990 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 16:28:52,990 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-16 16:28:52,990 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-16 16:28:52,991 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 16:28:52,991 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 16:28:53,166 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 16:28:53,168 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 16:28:53,794 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 16:28:53,802 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 16:28:53,802 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-11-16 16:28:53,805 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 04:28:53 BoogieIcfgContainer [2022-11-16 16:28:53,805 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 16:28:53,808 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 16:28:53,808 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 16:28:53,812 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 16:28:53,813 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 04:28:51" (1/3) ... [2022-11-16 16:28:53,814 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6aadbd73 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 04:28:53, skipping insertion in model container [2022-11-16 16:28:53,814 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:28:52" (2/3) ... [2022-11-16 16:28:53,814 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6aadbd73 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 04:28:53, skipping insertion in model container [2022-11-16 16:28:53,815 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 04:28:53" (3/3) ... [2022-11-16 16:28:53,816 INFO L112 eAbstractionObserver]: Analyzing ICFG test-0102-1.i [2022-11-16 16:28:53,840 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 16:28:53,840 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 31 error locations. [2022-11-16 16:28:53,917 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 16:28:53,925 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;@cfd2ce2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 16:28:53,926 INFO L358 AbstractCegarLoop]: Starting to check reachability of 31 error locations. [2022-11-16 16:28:53,934 INFO L276 IsEmpty]: Start isEmpty. Operand has 87 states, 46 states have (on average 1.891304347826087) internal successors, (87), 77 states have internal predecessors, (87), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-16 16:28:53,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-16 16:28:53,944 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 16:28:53,944 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-16 16:28:53,947 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_sub_listErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_sub_listErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_sub_listErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-16 16:28:53,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 16:28:53,959 INFO L85 PathProgramCache]: Analyzing trace with hash 106012329, now seen corresponding path program 1 times [2022-11-16 16:28:53,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-16 16:28:53,977 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1508938680] [2022-11-16 16:28:53,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:28:53,979 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 [2022-11-16 16:28:53,979 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6289e30a-84ce-488a-9a79-4a100fa2c467/bin/utaipan-Xvt2sAort0/mathsat [2022-11-16 16:28:53,991 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6289e30a-84ce-488a-9a79-4a100fa2c467/bin/utaipan-Xvt2sAort0/mathsat -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) [2022-11-16 16:28:54,039 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6289e30a-84ce-488a-9a79-4a100fa2c467/bin/utaipan-Xvt2sAort0/mathsat -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 [2022-11-16 16:28:54,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:28:54,173 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 1 conjunts are in the unsatisfiable core [2022-11-16 16:28:54,182 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 16:28:54,209 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 16:28:54,210 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 16:28:54,211 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-16 16:28:54,211 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1508938680] [2022-11-16 16:28:54,212 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1508938680] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 16:28:54,213 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 16:28:54,213 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 16:28:54,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711418811] [2022-11-16 16:28:54,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 16:28:54,222 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-16 16:28:54,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-16 16:28:54,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-16 16:28:54,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-16 16:28:54,281 INFO L87 Difference]: Start difference. First operand has 87 states, 46 states have (on average 1.891304347826087) internal successors, (87), 77 states have internal predecessors, (87), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 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) [2022-11-16 16:28:54,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 16:28:54,329 INFO L93 Difference]: Finished difference Result 87 states and 93 transitions. [2022-11-16 16:28:54,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-16 16:28:54,332 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 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 [2022-11-16 16:28:54,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 16:28:54,353 INFO L225 Difference]: With dead ends: 87 [2022-11-16 16:28:54,354 INFO L226 Difference]: Without dead ends: 85 [2022-11-16 16:28:54,356 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-16 16:28:54,369 INFO L413 NwaCegarLoop]: 93 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, 93 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 [2022-11-16 16:28:54,372 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 16:28:54,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2022-11-16 16:28:54,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2022-11-16 16:28:54,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 45 states have (on average 1.7555555555555555) internal successors, (79), 75 states have internal predecessors, (79), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-16 16:28:54,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 91 transitions. [2022-11-16 16:28:54,443 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 91 transitions. Word has length 5 [2022-11-16 16:28:54,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 16:28:54,443 INFO L495 AbstractCegarLoop]: Abstraction has 85 states and 91 transitions. [2022-11-16 16:28:54,444 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 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) [2022-11-16 16:28:54,444 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 91 transitions. [2022-11-16 16:28:54,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-16 16:28:54,445 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 16:28:54,445 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-16 16:28:54,469 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6289e30a-84ce-488a-9a79-4a100fa2c467/bin/utaipan-Xvt2sAort0/mathsat -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 [2022-11-16 16:28:54,660 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6289e30a-84ce-488a-9a79-4a100fa2c467/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 16:28:54,660 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting create_sub_listErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_sub_listErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_sub_listErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_sub_listErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-16 16:28:54,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 16:28:54,661 INFO L85 PathProgramCache]: Analyzing trace with hash -1219357814, now seen corresponding path program 1 times [2022-11-16 16:28:54,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-16 16:28:54,662 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2098319576] [2022-11-16 16:28:54,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:28:54,663 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 [2022-11-16 16:28:54,663 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6289e30a-84ce-488a-9a79-4a100fa2c467/bin/utaipan-Xvt2sAort0/mathsat [2022-11-16 16:28:54,665 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6289e30a-84ce-488a-9a79-4a100fa2c467/bin/utaipan-Xvt2sAort0/mathsat -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) [2022-11-16 16:28:54,670 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6289e30a-84ce-488a-9a79-4a100fa2c467/bin/utaipan-Xvt2sAort0/mathsat -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 [2022-11-16 16:28:54,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:28:54,807 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-16 16:28:54,812 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 16:28:54,894 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 [2022-11-16 16:28:54,987 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 16:28:54,989 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 16:28:54,992 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-16 16:28:54,993 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2098319576] [2022-11-16 16:28:54,993 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2098319576] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 16:28:54,997 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 16:28:54,998 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 16:28:54,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959012741] [2022-11-16 16:28:55,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 16:28:55,002 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 16:28:55,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-16 16:28:55,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 16:28:55,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 16:28:55,008 INFO L87 Difference]: Start difference. First operand 85 states and 91 transitions. Second operand has 5 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 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) [2022-11-16 16:28:55,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 16:28:55,399 INFO L93 Difference]: Finished difference Result 91 states and 99 transitions. [2022-11-16 16:28:55,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 16:28:55,400 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 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 7 [2022-11-16 16:28:55,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 16:28:55,403 INFO L225 Difference]: With dead ends: 91 [2022-11-16 16:28:55,403 INFO L226 Difference]: Without dead ends: 91 [2022-11-16 16:28:55,404 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-16 16:28:55,405 INFO L413 NwaCegarLoop]: 74 mSDtfsCounter, 39 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 190 SdHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-16 16:28:55,405 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 190 Invalid, 136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-16 16:28:55,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2022-11-16 16:28:55,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 83. [2022-11-16 16:28:55,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 45 states have (on average 1.711111111111111) internal successors, (77), 73 states have internal predecessors, (77), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-16 16:28:55,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 89 transitions. [2022-11-16 16:28:55,418 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 89 transitions. Word has length 7 [2022-11-16 16:28:55,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 16:28:55,418 INFO L495 AbstractCegarLoop]: Abstraction has 83 states and 89 transitions. [2022-11-16 16:28:55,419 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 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) [2022-11-16 16:28:55,419 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 89 transitions. [2022-11-16 16:28:55,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-16 16:28:55,420 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 16:28:55,420 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-16 16:28:55,441 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6289e30a-84ce-488a-9a79-4a100fa2c467/bin/utaipan-Xvt2sAort0/mathsat -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 [2022-11-16 16:28:55,634 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6289e30a-84ce-488a-9a79-4a100fa2c467/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 16:28:55,634 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting create_sub_listErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_sub_listErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_sub_listErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_sub_listErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-16 16:28:55,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 16:28:55,635 INFO L85 PathProgramCache]: Analyzing trace with hash -1219357813, now seen corresponding path program 1 times [2022-11-16 16:28:55,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-16 16:28:55,636 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1969674233] [2022-11-16 16:28:55,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:28:55,636 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 [2022-11-16 16:28:55,636 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6289e30a-84ce-488a-9a79-4a100fa2c467/bin/utaipan-Xvt2sAort0/mathsat [2022-11-16 16:28:55,643 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6289e30a-84ce-488a-9a79-4a100fa2c467/bin/utaipan-Xvt2sAort0/mathsat -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) [2022-11-16 16:28:55,644 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6289e30a-84ce-488a-9a79-4a100fa2c467/bin/utaipan-Xvt2sAort0/mathsat -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 [2022-11-16 16:28:55,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:28:55,726 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-16 16:28:55,729 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 16:28:55,742 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 [2022-11-16 16:28:55,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 16:28:55,823 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 16:28:55,823 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-16 16:28:55,823 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1969674233] [2022-11-16 16:28:55,824 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1969674233] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 16:28:55,824 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 16:28:55,824 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 16:28:55,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600953891] [2022-11-16 16:28:55,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 16:28:55,825 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 16:28:55,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-16 16:28:55,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 16:28:55,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 16:28:55,827 INFO L87 Difference]: Start difference. First operand 83 states and 89 transitions. Second operand has 5 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 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) [2022-11-16 16:28:56,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 16:28:56,204 INFO L93 Difference]: Finished difference Result 87 states and 93 transitions. [2022-11-16 16:28:56,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 16:28:56,207 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 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 7 [2022-11-16 16:28:56,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 16:28:56,208 INFO L225 Difference]: With dead ends: 87 [2022-11-16 16:28:56,208 INFO L226 Difference]: Without dead ends: 87 [2022-11-16 16:28:56,209 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-16 16:28:56,210 INFO L413 NwaCegarLoop]: 84 mSDtfsCounter, 5 mSDsluCounter, 170 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 254 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-16 16:28:56,210 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 254 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-16 16:28:56,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2022-11-16 16:28:56,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 86. [2022-11-16 16:28:56,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 48 states have (on average 1.6666666666666667) internal successors, (80), 75 states have internal predecessors, (80), 6 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-16 16:28:56,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 92 transitions. [2022-11-16 16:28:56,232 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 92 transitions. Word has length 7 [2022-11-16 16:28:56,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 16:28:56,233 INFO L495 AbstractCegarLoop]: Abstraction has 86 states and 92 transitions. [2022-11-16 16:28:56,234 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 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) [2022-11-16 16:28:56,234 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 92 transitions. [2022-11-16 16:28:56,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-16 16:28:56,236 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 16:28:56,236 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 16:28:56,256 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6289e30a-84ce-488a-9a79-4a100fa2c467/bin/utaipan-Xvt2sAort0/mathsat -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 [2022-11-16 16:28:56,450 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6289e30a-84ce-488a-9a79-4a100fa2c467/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 16:28:56,451 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting create_sub_listErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_sub_listErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_sub_listErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_sub_listErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-16 16:28:56,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 16:28:56,452 INFO L85 PathProgramCache]: Analyzing trace with hash -778231822, now seen corresponding path program 1 times [2022-11-16 16:28:56,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-16 16:28:56,453 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [46809842] [2022-11-16 16:28:56,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:28:56,453 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 [2022-11-16 16:28:56,453 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6289e30a-84ce-488a-9a79-4a100fa2c467/bin/utaipan-Xvt2sAort0/mathsat [2022-11-16 16:28:56,455 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6289e30a-84ce-488a-9a79-4a100fa2c467/bin/utaipan-Xvt2sAort0/mathsat -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) [2022-11-16 16:28:56,496 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6289e30a-84ce-488a-9a79-4a100fa2c467/bin/utaipan-Xvt2sAort0/mathsat -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 [2022-11-16 16:28:56,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:28:56,569 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-16 16:28:56,571 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 16:28:56,583 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 [2022-11-16 16:28:56,595 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 16:28:56,595 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 16:28:56,596 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-16 16:28:56,598 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [46809842] [2022-11-16 16:28:56,602 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [46809842] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 16:28:56,604 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 16:28:56,604 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 16:28:56,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239748186] [2022-11-16 16:28:56,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 16:28:56,606 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 16:28:56,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-16 16:28:56,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 16:28:56,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 16:28:56,607 INFO L87 Difference]: Start difference. First operand 86 states and 92 transitions. Second operand has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 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) [2022-11-16 16:28:56,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 16:28:56,763 INFO L93 Difference]: Finished difference Result 86 states and 92 transitions. [2022-11-16 16:28:56,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 16:28:56,764 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 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 11 [2022-11-16 16:28:56,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 16:28:56,765 INFO L225 Difference]: With dead ends: 86 [2022-11-16 16:28:56,765 INFO L226 Difference]: Without dead ends: 86 [2022-11-16 16:28:56,765 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 16:28:56,766 INFO L413 NwaCegarLoop]: 85 mSDtfsCounter, 6 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 132 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 16:28:56,766 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 132 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 16:28:56,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2022-11-16 16:28:56,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 85. [2022-11-16 16:28:56,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 48 states have (on average 1.6458333333333333) internal successors, (79), 74 states have internal predecessors, (79), 6 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-16 16:28:56,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 91 transitions. [2022-11-16 16:28:56,774 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 91 transitions. Word has length 11 [2022-11-16 16:28:56,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 16:28:56,774 INFO L495 AbstractCegarLoop]: Abstraction has 85 states and 91 transitions. [2022-11-16 16:28:56,774 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 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) [2022-11-16 16:28:56,775 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 91 transitions. [2022-11-16 16:28:56,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-16 16:28:56,775 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 16:28:56,787 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 16:28:56,807 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6289e30a-84ce-488a-9a79-4a100fa2c467/bin/utaipan-Xvt2sAort0/mathsat -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 [2022-11-16 16:28:57,005 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6289e30a-84ce-488a-9a79-4a100fa2c467/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 16:28:57,006 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting create_sub_listErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_sub_listErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_sub_listErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_sub_listErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-16 16:28:57,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 16:28:57,007 INFO L85 PathProgramCache]: Analyzing trace with hash -778231821, now seen corresponding path program 1 times [2022-11-16 16:28:57,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-16 16:28:57,007 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1697758705] [2022-11-16 16:28:57,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:28:57,007 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 [2022-11-16 16:28:57,008 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6289e30a-84ce-488a-9a79-4a100fa2c467/bin/utaipan-Xvt2sAort0/mathsat [2022-11-16 16:28:57,009 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6289e30a-84ce-488a-9a79-4a100fa2c467/bin/utaipan-Xvt2sAort0/mathsat -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) [2022-11-16 16:28:57,014 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6289e30a-84ce-488a-9a79-4a100fa2c467/bin/utaipan-Xvt2sAort0/mathsat -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 [2022-11-16 16:28:57,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:28:57,134 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 16:28:57,137 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 16:28:57,151 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 5 [2022-11-16 16:28:57,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 16:28:57,184 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 16:28:57,184 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-16 16:28:57,184 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1697758705] [2022-11-16 16:28:57,184 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1697758705] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 16:28:57,185 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 16:28:57,185 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 16:28:57,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253836226] [2022-11-16 16:28:57,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 16:28:57,186 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 16:28:57,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-16 16:28:57,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 16:28:57,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 16:28:57,187 INFO L87 Difference]: Start difference. First operand 85 states and 91 transitions. Second operand has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 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) [2022-11-16 16:28:57,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 16:28:57,365 INFO L93 Difference]: Finished difference Result 85 states and 91 transitions. [2022-11-16 16:28:57,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 16:28:57,366 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 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 11 [2022-11-16 16:28:57,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 16:28:57,367 INFO L225 Difference]: With dead ends: 85 [2022-11-16 16:28:57,367 INFO L226 Difference]: Without dead ends: 85 [2022-11-16 16:28:57,367 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 16:28:57,368 INFO L413 NwaCegarLoop]: 85 mSDtfsCounter, 5 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 136 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 16:28:57,369 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 136 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-16 16:28:57,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2022-11-16 16:28:57,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 84. [2022-11-16 16:28:57,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 48 states have (on average 1.625) internal successors, (78), 73 states have internal predecessors, (78), 6 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-16 16:28:57,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 90 transitions. [2022-11-16 16:28:57,386 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 90 transitions. Word has length 11 [2022-11-16 16:28:57,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 16:28:57,386 INFO L495 AbstractCegarLoop]: Abstraction has 84 states and 90 transitions. [2022-11-16 16:28:57,386 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 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) [2022-11-16 16:28:57,387 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 90 transitions. [2022-11-16 16:28:57,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-16 16:28:57,387 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 16:28:57,388 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 16:28:57,408 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6289e30a-84ce-488a-9a79-4a100fa2c467/bin/utaipan-Xvt2sAort0/mathsat -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 [2022-11-16 16:28:57,601 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6289e30a-84ce-488a-9a79-4a100fa2c467/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 16:28:57,602 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting list_add_tailErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_sub_listErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_sub_listErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_sub_listErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-16 16:28:57,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 16:28:57,603 INFO L85 PathProgramCache]: Analyzing trace with hash -70636768, now seen corresponding path program 1 times [2022-11-16 16:28:57,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-16 16:28:57,603 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1846955645] [2022-11-16 16:28:57,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:28:57,603 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 [2022-11-16 16:28:57,603 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6289e30a-84ce-488a-9a79-4a100fa2c467/bin/utaipan-Xvt2sAort0/mathsat [2022-11-16 16:28:57,604 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6289e30a-84ce-488a-9a79-4a100fa2c467/bin/utaipan-Xvt2sAort0/mathsat -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) [2022-11-16 16:28:57,606 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6289e30a-84ce-488a-9a79-4a100fa2c467/bin/utaipan-Xvt2sAort0/mathsat -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 [2022-11-16 16:28:57,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:28:57,811 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-16 16:28:57,815 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 16:28:57,830 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 [2022-11-16 16:28:57,838 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 [2022-11-16 16:28:58,010 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:28:58,028 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 [2022-11-16 16:28:58,047 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-16 16:28:58,048 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 [2022-11-16 16:28:58,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 16:28:58,149 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 16:28:58,150 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-16 16:28:58,150 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1846955645] [2022-11-16 16:28:58,150 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1846955645] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 16:28:58,150 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 16:28:58,150 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 16:28:58,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458866343] [2022-11-16 16:28:58,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 16:28:58,151 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 16:28:58,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-16 16:28:58,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 16:28:58,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-16 16:28:58,152 INFO L87 Difference]: Start difference. First operand 84 states and 90 transitions. Second operand has 8 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 6 states have internal predecessors, (12), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 16:28:59,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 16:28:59,010 INFO L93 Difference]: Finished difference Result 112 states and 118 transitions. [2022-11-16 16:28:59,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-16 16:28:59,011 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 6 states have internal predecessors, (12), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-11-16 16:28:59,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 16:28:59,012 INFO L225 Difference]: With dead ends: 112 [2022-11-16 16:28:59,012 INFO L226 Difference]: Without dead ends: 112 [2022-11-16 16:28:59,013 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-11-16 16:28:59,013 INFO L413 NwaCegarLoop]: 68 mSDtfsCounter, 54 mSDsluCounter, 263 mSDsCounter, 0 mSdLazyCounter, 282 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 331 SdHoareTripleChecker+Invalid, 288 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 282 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-16 16:28:59,014 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 331 Invalid, 288 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 282 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-16 16:28:59,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2022-11-16 16:28:59,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 102. [2022-11-16 16:28:59,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 63 states have (on average 1.6349206349206349) internal successors, (103), 89 states have internal predecessors, (103), 7 states have call successors, (7), 5 states have call predecessors, (7), 5 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2022-11-16 16:28:59,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 117 transitions. [2022-11-16 16:28:59,023 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 117 transitions. Word has length 14 [2022-11-16 16:28:59,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 16:28:59,023 INFO L495 AbstractCegarLoop]: Abstraction has 102 states and 117 transitions. [2022-11-16 16:28:59,024 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 6 states have internal predecessors, (12), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 16:28:59,024 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 117 transitions. [2022-11-16 16:28:59,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-16 16:28:59,025 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 16:28:59,025 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 16:28:59,046 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6289e30a-84ce-488a-9a79-4a100fa2c467/bin/utaipan-Xvt2sAort0/mathsat -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 [2022-11-16 16:28:59,240 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6289e30a-84ce-488a-9a79-4a100fa2c467/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 16:28:59,240 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting list_add_tailErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_sub_listErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_sub_listErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_sub_listErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-16 16:28:59,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 16:28:59,241 INFO L85 PathProgramCache]: Analyzing trace with hash -70636769, now seen corresponding path program 1 times [2022-11-16 16:28:59,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-16 16:28:59,241 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [300567774] [2022-11-16 16:28:59,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:28:59,242 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 [2022-11-16 16:28:59,242 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6289e30a-84ce-488a-9a79-4a100fa2c467/bin/utaipan-Xvt2sAort0/mathsat [2022-11-16 16:28:59,250 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6289e30a-84ce-488a-9a79-4a100fa2c467/bin/utaipan-Xvt2sAort0/mathsat -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) [2022-11-16 16:28:59,251 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6289e30a-84ce-488a-9a79-4a100fa2c467/bin/utaipan-Xvt2sAort0/mathsat -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 [2022-11-16 16:28:59,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:28:59,422 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-16 16:28:59,425 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 16:28:59,430 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-16 16:28:59,515 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-16 16:28:59,516 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 [2022-11-16 16:28:59,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 16:28:59,590 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 16:28:59,590 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-16 16:28:59,590 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [300567774] [2022-11-16 16:28:59,591 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [300567774] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 16:28:59,591 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 16:28:59,591 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 16:28:59,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248534718] [2022-11-16 16:28:59,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 16:28:59,592 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 16:28:59,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-16 16:28:59,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 16:28:59,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-16 16:28:59,593 INFO L87 Difference]: Start difference. First operand 102 states and 117 transitions. Second operand has 8 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 6 states have internal predecessors, (12), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 16:29:00,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 16:29:00,204 INFO L93 Difference]: Finished difference Result 131 states and 146 transitions. [2022-11-16 16:29:00,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 16:29:00,205 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 6 states have internal predecessors, (12), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-11-16 16:29:00,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 16:29:00,206 INFO L225 Difference]: With dead ends: 131 [2022-11-16 16:29:00,206 INFO L226 Difference]: Without dead ends: 131 [2022-11-16 16:29:00,207 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-11-16 16:29:00,207 INFO L413 NwaCegarLoop]: 59 mSDtfsCounter, 87 mSDsluCounter, 219 mSDsCounter, 0 mSdLazyCounter, 282 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 278 SdHoareTripleChecker+Invalid, 291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 282 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-16 16:29:00,208 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 278 Invalid, 291 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 282 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-16 16:29:00,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2022-11-16 16:29:00,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 112. [2022-11-16 16:29:00,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 72 states have (on average 1.6666666666666667) internal successors, (120), 98 states have internal predecessors, (120), 7 states have call successors, (7), 6 states have call predecessors, (7), 6 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2022-11-16 16:29:00,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 134 transitions. [2022-11-16 16:29:00,216 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 134 transitions. Word has length 14 [2022-11-16 16:29:00,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 16:29:00,217 INFO L495 AbstractCegarLoop]: Abstraction has 112 states and 134 transitions. [2022-11-16 16:29:00,217 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 6 states have internal predecessors, (12), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 16:29:00,217 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 134 transitions. [2022-11-16 16:29:00,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-16 16:29:00,218 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 16:29:00,218 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 16:29:00,239 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6289e30a-84ce-488a-9a79-4a100fa2c467/bin/utaipan-Xvt2sAort0/mathsat -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 [2022-11-16 16:29:00,433 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6289e30a-84ce-488a-9a79-4a100fa2c467/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 16:29:00,434 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting list_add_tailErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_sub_listErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_sub_listErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_sub_listErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-16 16:29:00,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 16:29:00,434 INFO L85 PathProgramCache]: Analyzing trace with hash 837542848, now seen corresponding path program 1 times [2022-11-16 16:29:00,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-16 16:29:00,435 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1577030969] [2022-11-16 16:29:00,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:29:00,435 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 [2022-11-16 16:29:00,435 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6289e30a-84ce-488a-9a79-4a100fa2c467/bin/utaipan-Xvt2sAort0/mathsat [2022-11-16 16:29:00,436 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6289e30a-84ce-488a-9a79-4a100fa2c467/bin/utaipan-Xvt2sAort0/mathsat -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) [2022-11-16 16:29:00,437 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6289e30a-84ce-488a-9a79-4a100fa2c467/bin/utaipan-Xvt2sAort0/mathsat -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 [2022-11-16 16:29:00,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:29:00,587 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 16:29:00,589 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 16:29:00,608 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 16:29:00,609 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 16:29:00,609 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-16 16:29:00,609 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1577030969] [2022-11-16 16:29:00,609 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1577030969] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 16:29:00,610 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 16:29:00,610 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 16:29:00,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160537641] [2022-11-16 16:29:00,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 16:29:00,611 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 16:29:00,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-16 16:29:00,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 16:29:00,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 16:29:00,612 INFO L87 Difference]: Start difference. First operand 112 states and 134 transitions. Second operand has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 16:29:00,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 16:29:00,837 INFO L93 Difference]: Finished difference Result 111 states and 131 transitions. [2022-11-16 16:29:00,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 16:29:00,838 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-11-16 16:29:00,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 16:29:00,839 INFO L225 Difference]: With dead ends: 111 [2022-11-16 16:29:00,839 INFO L226 Difference]: Without dead ends: 111 [2022-11-16 16:29:00,840 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 16:29:00,840 INFO L413 NwaCegarLoop]: 77 mSDtfsCounter, 27 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 169 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 16:29:00,841 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 169 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-16 16:29:00,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2022-11-16 16:29:00,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 111. [2022-11-16 16:29:00,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 72 states have (on average 1.625) internal successors, (117), 97 states have internal predecessors, (117), 7 states have call successors, (7), 6 states have call predecessors, (7), 6 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2022-11-16 16:29:00,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 131 transitions. [2022-11-16 16:29:00,848 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 131 transitions. Word has length 16 [2022-11-16 16:29:00,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 16:29:00,848 INFO L495 AbstractCegarLoop]: Abstraction has 111 states and 131 transitions. [2022-11-16 16:29:00,849 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 16:29:00,849 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 131 transitions. [2022-11-16 16:29:00,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-16 16:29:00,849 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 16:29:00,850 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 16:29:00,868 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6289e30a-84ce-488a-9a79-4a100fa2c467/bin/utaipan-Xvt2sAort0/mathsat -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 [2022-11-16 16:29:01,064 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6289e30a-84ce-488a-9a79-4a100fa2c467/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 16:29:01,065 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting list_add_tailErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_sub_listErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_sub_listErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_sub_listErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-16 16:29:01,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 16:29:01,065 INFO L85 PathProgramCache]: Analyzing trace with hash 837542849, now seen corresponding path program 1 times [2022-11-16 16:29:01,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-16 16:29:01,066 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2088142680] [2022-11-16 16:29:01,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:29:01,066 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 [2022-11-16 16:29:01,067 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6289e30a-84ce-488a-9a79-4a100fa2c467/bin/utaipan-Xvt2sAort0/mathsat [2022-11-16 16:29:01,068 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6289e30a-84ce-488a-9a79-4a100fa2c467/bin/utaipan-Xvt2sAort0/mathsat -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) [2022-11-16 16:29:01,069 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6289e30a-84ce-488a-9a79-4a100fa2c467/bin/utaipan-Xvt2sAort0/mathsat -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 [2022-11-16 16:29:01,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:29:01,257 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-16 16:29:01,260 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 16:29:01,427 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 16:29:01,427 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 16:29:01,427 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-16 16:29:01,427 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2088142680] [2022-11-16 16:29:01,428 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2088142680] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 16:29:01,428 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 16:29:01,428 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-16 16:29:01,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847150810] [2022-11-16 16:29:01,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 16:29:01,429 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 16:29:01,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-16 16:29:01,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 16:29:01,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-11-16 16:29:01,430 INFO L87 Difference]: Start difference. First operand 111 states and 131 transitions. Second operand has 10 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 8 states have internal predecessors, (14), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 16:29:01,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 16:29:01,984 INFO L93 Difference]: Finished difference Result 119 states and 132 transitions. [2022-11-16 16:29:01,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-16 16:29:01,986 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 8 states have internal predecessors, (14), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-11-16 16:29:01,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 16:29:01,987 INFO L225 Difference]: With dead ends: 119 [2022-11-16 16:29:01,987 INFO L226 Difference]: Without dead ends: 119 [2022-11-16 16:29:01,987 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2022-11-16 16:29:01,988 INFO L413 NwaCegarLoop]: 71 mSDtfsCounter, 97 mSDsluCounter, 440 mSDsCounter, 0 mSdLazyCounter, 165 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 511 SdHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-16 16:29:01,988 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 511 Invalid, 168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 165 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-16 16:29:01,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2022-11-16 16:29:01,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 111. [2022-11-16 16:29:01,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 72 states have (on average 1.6111111111111112) internal successors, (116), 97 states have internal predecessors, (116), 7 states have call successors, (7), 6 states have call predecessors, (7), 6 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2022-11-16 16:29:01,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 130 transitions. [2022-11-16 16:29:01,994 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 130 transitions. Word has length 16 [2022-11-16 16:29:01,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 16:29:01,995 INFO L495 AbstractCegarLoop]: Abstraction has 111 states and 130 transitions. [2022-11-16 16:29:01,995 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 8 states have internal predecessors, (14), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 16:29:01,995 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 130 transitions. [2022-11-16 16:29:01,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-16 16:29:01,996 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 16:29:01,996 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 16:29:02,017 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6289e30a-84ce-488a-9a79-4a100fa2c467/bin/utaipan-Xvt2sAort0/mathsat -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 [2022-11-16 16:29:02,217 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6289e30a-84ce-488a-9a79-4a100fa2c467/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 16:29:02,217 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting list_add_tailErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_sub_listErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_sub_listErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_sub_listErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-16 16:29:02,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 16:29:02,218 INFO L85 PathProgramCache]: Analyzing trace with hash 194024551, now seen corresponding path program 1 times [2022-11-16 16:29:02,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-16 16:29:02,219 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [115377633] [2022-11-16 16:29:02,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:29:02,219 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 [2022-11-16 16:29:02,220 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6289e30a-84ce-488a-9a79-4a100fa2c467/bin/utaipan-Xvt2sAort0/mathsat [2022-11-16 16:29:02,221 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6289e30a-84ce-488a-9a79-4a100fa2c467/bin/utaipan-Xvt2sAort0/mathsat -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) [2022-11-16 16:29:02,233 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6289e30a-84ce-488a-9a79-4a100fa2c467/bin/utaipan-Xvt2sAort0/mathsat -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 [2022-11-16 16:29:02,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:29:02,395 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-16 16:29:02,397 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 16:29:02,407 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 [2022-11-16 16:29:02,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 16:29:02,475 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 16:29:02,475 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-16 16:29:02,476 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [115377633] [2022-11-16 16:29:02,476 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [115377633] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 16:29:02,476 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 16:29:02,476 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 16:29:02,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690164089] [2022-11-16 16:29:02,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 16:29:02,477 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 16:29:02,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-16 16:29:02,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 16:29:02,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-16 16:29:02,478 INFO L87 Difference]: Start difference. First operand 111 states and 130 transitions. Second operand has 6 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 16:29:02,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 16:29:02,898 INFO L93 Difference]: Finished difference Result 118 states and 127 transitions. [2022-11-16 16:29:02,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 16:29:02,899 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-11-16 16:29:02,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 16:29:02,900 INFO L225 Difference]: With dead ends: 118 [2022-11-16 16:29:02,900 INFO L226 Difference]: Without dead ends: 118 [2022-11-16 16:29:02,900 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-11-16 16:29:02,901 INFO L413 NwaCegarLoop]: 72 mSDtfsCounter, 49 mSDsluCounter, 179 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 251 SdHoareTripleChecker+Invalid, 164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-16 16:29:02,902 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 251 Invalid, 164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-16 16:29:02,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2022-11-16 16:29:02,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 110. [2022-11-16 16:29:02,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 72 states have (on average 1.5416666666666667) internal successors, (111), 96 states have internal predecessors, (111), 7 states have call successors, (7), 6 states have call predecessors, (7), 6 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2022-11-16 16:29:02,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 125 transitions. [2022-11-16 16:29:02,907 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 125 transitions. Word has length 17 [2022-11-16 16:29:02,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 16:29:02,908 INFO L495 AbstractCegarLoop]: Abstraction has 110 states and 125 transitions. [2022-11-16 16:29:02,908 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 16:29:02,908 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 125 transitions. [2022-11-16 16:29:02,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-16 16:29:02,909 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 16:29:02,909 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 16:29:02,931 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6289e30a-84ce-488a-9a79-4a100fa2c467/bin/utaipan-Xvt2sAort0/mathsat -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 [2022-11-16 16:29:03,124 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6289e30a-84ce-488a-9a79-4a100fa2c467/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 16:29:03,124 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting list_add_tailErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_sub_listErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_sub_listErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_sub_listErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-16 16:29:03,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 16:29:03,125 INFO L85 PathProgramCache]: Analyzing trace with hash 194024552, now seen corresponding path program 1 times [2022-11-16 16:29:03,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-16 16:29:03,125 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1924351793] [2022-11-16 16:29:03,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:29:03,125 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 [2022-11-16 16:29:03,125 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6289e30a-84ce-488a-9a79-4a100fa2c467/bin/utaipan-Xvt2sAort0/mathsat [2022-11-16 16:29:03,126 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6289e30a-84ce-488a-9a79-4a100fa2c467/bin/utaipan-Xvt2sAort0/mathsat -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) [2022-11-16 16:29:03,128 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6289e30a-84ce-488a-9a79-4a100fa2c467/bin/utaipan-Xvt2sAort0/mathsat -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 [2022-11-16 16:29:03,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:29:03,316 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-16 16:29:03,319 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 16:29:03,331 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 [2022-11-16 16:29:03,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 16:29:03,477 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 16:29:03,477 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-16 16:29:03,477 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1924351793] [2022-11-16 16:29:03,477 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1924351793] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 16:29:03,477 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 16:29:03,477 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 16:29:03,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749701833] [2022-11-16 16:29:03,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 16:29:03,478 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 16:29:03,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-16 16:29:03,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 16:29:03,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-16 16:29:03,479 INFO L87 Difference]: Start difference. First operand 110 states and 125 transitions. Second operand has 6 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 16:29:03,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 16:29:03,975 INFO L93 Difference]: Finished difference Result 116 states and 123 transitions. [2022-11-16 16:29:03,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 16:29:03,976 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-11-16 16:29:03,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 16:29:03,977 INFO L225 Difference]: With dead ends: 116 [2022-11-16 16:29:03,977 INFO L226 Difference]: Without dead ends: 116 [2022-11-16 16:29:03,978 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-11-16 16:29:03,978 INFO L413 NwaCegarLoop]: 72 mSDtfsCounter, 36 mSDsluCounter, 199 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 271 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-16 16:29:03,979 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 271 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 149 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-16 16:29:03,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2022-11-16 16:29:03,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 110. [2022-11-16 16:29:03,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 72 states have (on average 1.4861111111111112) internal successors, (107), 96 states have internal predecessors, (107), 7 states have call successors, (7), 6 states have call predecessors, (7), 6 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2022-11-16 16:29:03,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 121 transitions. [2022-11-16 16:29:03,983 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 121 transitions. Word has length 17 [2022-11-16 16:29:03,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 16:29:03,984 INFO L495 AbstractCegarLoop]: Abstraction has 110 states and 121 transitions. [2022-11-16 16:29:03,984 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 16:29:03,984 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 121 transitions. [2022-11-16 16:29:03,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-16 16:29:03,984 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 16:29:03,985 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 16:29:04,006 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6289e30a-84ce-488a-9a79-4a100fa2c467/bin/utaipan-Xvt2sAort0/mathsat -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 [2022-11-16 16:29:04,185 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6289e30a-84ce-488a-9a79-4a100fa2c467/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 16:29:04,185 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting list_add_tailErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_sub_listErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_sub_listErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_sub_listErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-16 16:29:04,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 16:29:04,186 INFO L85 PathProgramCache]: Analyzing trace with hash 1774001130, now seen corresponding path program 1 times [2022-11-16 16:29:04,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-16 16:29:04,186 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1501861703] [2022-11-16 16:29:04,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:29:04,187 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 [2022-11-16 16:29:04,187 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6289e30a-84ce-488a-9a79-4a100fa2c467/bin/utaipan-Xvt2sAort0/mathsat [2022-11-16 16:29:04,188 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6289e30a-84ce-488a-9a79-4a100fa2c467/bin/utaipan-Xvt2sAort0/mathsat -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) [2022-11-16 16:29:04,189 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6289e30a-84ce-488a-9a79-4a100fa2c467/bin/utaipan-Xvt2sAort0/mathsat -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 [2022-11-16 16:29:04,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:29:04,438 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 28 conjunts are in the unsatisfiable core [2022-11-16 16:29:04,441 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 16:29:04,450 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 [2022-11-16 16:29:04,504 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 [2022-11-16 16:29:04,560 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-16 16:29:04,606 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-16 16:29:04,606 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 [2022-11-16 16:29:04,681 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 [2022-11-16 16:29:04,794 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 [2022-11-16 16:29:04,866 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 16:29:04,866 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 16:29:04,867 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-16 16:29:04,867 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1501861703] [2022-11-16 16:29:04,867 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1501861703] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 16:29:04,867 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 16:29:04,867 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-16 16:29:04,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639668312] [2022-11-16 16:29:04,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 16:29:04,868 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-16 16:29:04,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-16 16:29:04,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-16 16:29:04,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2022-11-16 16:29:04,869 INFO L87 Difference]: Start difference. First operand 110 states and 121 transitions. Second operand has 12 states, 10 states have (on average 1.7) internal successors, (17), 10 states have internal predecessors, (17), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 16:29:06,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 16:29:06,179 INFO L93 Difference]: Finished difference Result 145 states and 161 transitions. [2022-11-16 16:29:06,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-16 16:29:06,180 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 1.7) internal successors, (17), 10 states have internal predecessors, (17), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-11-16 16:29:06,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 16:29:06,181 INFO L225 Difference]: With dead ends: 145 [2022-11-16 16:29:06,181 INFO L226 Difference]: Without dead ends: 145 [2022-11-16 16:29:06,182 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=73, Invalid=307, Unknown=0, NotChecked=0, Total=380 [2022-11-16 16:29:06,182 INFO L413 NwaCegarLoop]: 59 mSDtfsCounter, 62 mSDsluCounter, 376 mSDsCounter, 0 mSdLazyCounter, 395 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 435 SdHoareTripleChecker+Invalid, 409 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 395 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-16 16:29:06,183 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 435 Invalid, 409 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 395 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-16 16:29:06,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2022-11-16 16:29:06,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 132. [2022-11-16 16:29:06,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 92 states have (on average 1.423913043478261) internal successors, (131), 116 states have internal predecessors, (131), 9 states have call successors, (9), 8 states have call predecessors, (9), 6 states have return successors, (9), 7 states have call predecessors, (9), 9 states have call successors, (9) [2022-11-16 16:29:06,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 149 transitions. [2022-11-16 16:29:06,190 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 149 transitions. Word has length 19 [2022-11-16 16:29:06,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 16:29:06,191 INFO L495 AbstractCegarLoop]: Abstraction has 132 states and 149 transitions. [2022-11-16 16:29:06,191 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 1.7) internal successors, (17), 10 states have internal predecessors, (17), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 16:29:06,191 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 149 transitions. [2022-11-16 16:29:06,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-16 16:29:06,192 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 16:29:06,192 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 16:29:06,212 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6289e30a-84ce-488a-9a79-4a100fa2c467/bin/utaipan-Xvt2sAort0/mathsat -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 [2022-11-16 16:29:06,412 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6289e30a-84ce-488a-9a79-4a100fa2c467/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 16:29:06,412 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting list_add_tailErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_sub_listErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_sub_listErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_sub_listErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-16 16:29:06,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 16:29:06,413 INFO L85 PathProgramCache]: Analyzing trace with hash 1774001131, now seen corresponding path program 1 times [2022-11-16 16:29:06,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-16 16:29:06,413 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1469808269] [2022-11-16 16:29:06,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:29:06,414 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 [2022-11-16 16:29:06,414 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6289e30a-84ce-488a-9a79-4a100fa2c467/bin/utaipan-Xvt2sAort0/mathsat [2022-11-16 16:29:06,415 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6289e30a-84ce-488a-9a79-4a100fa2c467/bin/utaipan-Xvt2sAort0/mathsat -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) [2022-11-16 16:29:06,431 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6289e30a-84ce-488a-9a79-4a100fa2c467/bin/utaipan-Xvt2sAort0/mathsat -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)] Waiting until timeout for monitored process [2022-11-16 16:29:06,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:29:06,643 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 46 conjunts are in the unsatisfiable core [2022-11-16 16:29:06,647 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 16:29:06,653 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 [2022-11-16 16:29:06,660 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 [2022-11-16 16:29:06,750 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 [2022-11-16 16:29:06,759 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 [2022-11-16 16:29:06,814 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:29:06,815 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 [2022-11-16 16:29:06,839 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:29:06,840 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 [2022-11-16 16:29:06,886 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-16 16:29:06,886 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 [2022-11-16 16:29:06,902 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 [2022-11-16 16:29:07,008 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 [2022-11-16 16:29:07,022 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 [2022-11-16 16:29:07,208 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 [2022-11-16 16:29:07,214 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 [2022-11-16 16:29:07,326 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 16:29:07,327 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 16:29:07,327 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-16 16:29:07,327 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1469808269] [2022-11-16 16:29:07,327 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1469808269] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 16:29:07,327 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 16:29:07,327 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-16 16:29:07,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767919238] [2022-11-16 16:29:07,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 16:29:07,328 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-16 16:29:07,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-16 16:29:07,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-16 16:29:07,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2022-11-16 16:29:07,329 INFO L87 Difference]: Start difference. First operand 132 states and 149 transitions. Second operand has 12 states, 10 states have (on average 1.7) internal successors, (17), 10 states have internal predecessors, (17), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 16:29:09,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 16:29:09,041 INFO L93 Difference]: Finished difference Result 135 states and 150 transitions. [2022-11-16 16:29:09,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-16 16:29:09,042 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 1.7) internal successors, (17), 10 states have internal predecessors, (17), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-11-16 16:29:09,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 16:29:09,043 INFO L225 Difference]: With dead ends: 135 [2022-11-16 16:29:09,043 INFO L226 Difference]: Without dead ends: 135 [2022-11-16 16:29:09,044 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=73, Invalid=307, Unknown=0, NotChecked=0, Total=380 [2022-11-16 16:29:09,045 INFO L413 NwaCegarLoop]: 71 mSDtfsCounter, 35 mSDsluCounter, 437 mSDsCounter, 0 mSdLazyCounter, 441 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 508 SdHoareTripleChecker+Invalid, 452 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 441 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-16 16:29:09,045 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 508 Invalid, 452 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 441 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-16 16:29:09,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2022-11-16 16:29:09,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 135. [2022-11-16 16:29:09,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 94 states have (on average 1.4042553191489362) internal successors, (132), 119 states have internal predecessors, (132), 9 states have call successors, (9), 8 states have call predecessors, (9), 7 states have return successors, (9), 7 states have call predecessors, (9), 9 states have call successors, (9) [2022-11-16 16:29:09,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 150 transitions. [2022-11-16 16:29:09,052 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 150 transitions. Word has length 19 [2022-11-16 16:29:09,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 16:29:09,053 INFO L495 AbstractCegarLoop]: Abstraction has 135 states and 150 transitions. [2022-11-16 16:29:09,053 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 1.7) internal successors, (17), 10 states have internal predecessors, (17), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 16:29:09,053 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 150 transitions. [2022-11-16 16:29:09,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-11-16 16:29:09,054 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 16:29:09,054 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 16:29:09,076 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6289e30a-84ce-488a-9a79-4a100fa2c467/bin/utaipan-Xvt2sAort0/mathsat -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)] Forceful destruction successful, exit code 0 [2022-11-16 16:29:09,270 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6289e30a-84ce-488a-9a79-4a100fa2c467/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 16:29:09,270 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting create_sub_listErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_sub_listErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_sub_listErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_sub_listErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-16 16:29:09,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 16:29:09,271 INFO L85 PathProgramCache]: Analyzing trace with hash 1031850971, now seen corresponding path program 1 times [2022-11-16 16:29:09,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-16 16:29:09,271 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1424543695] [2022-11-16 16:29:09,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:29:09,271 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 [2022-11-16 16:29:09,272 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6289e30a-84ce-488a-9a79-4a100fa2c467/bin/utaipan-Xvt2sAort0/mathsat [2022-11-16 16:29:09,272 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6289e30a-84ce-488a-9a79-4a100fa2c467/bin/utaipan-Xvt2sAort0/mathsat -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) [2022-11-16 16:29:09,274 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6289e30a-84ce-488a-9a79-4a100fa2c467/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2022-11-16 16:29:09,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:29:09,582 INFO L263 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-16 16:29:09,585 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 16:29:09,604 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 [2022-11-16 16:29:09,611 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 [2022-11-16 16:29:09,702 WARN L855 $PredicateComparison]: unable to prove that (exists ((|create_sub_list_insert_sub_~sub~0#1.base| (_ BitVec 32))) (and (exists ((v_ArrVal_448 (_ BitVec 32))) (= |c_#length| (store |c_old(#length)| |create_sub_list_insert_sub_~sub~0#1.base| v_ArrVal_448))) (= (_ bv0 1) (select |c_old(#valid)| |create_sub_list_insert_sub_~sub~0#1.base|)))) is different from true [2022-11-16 16:29:09,731 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 [2022-11-16 16:29:09,789 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:29:09,791 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 [2022-11-16 16:29:09,803 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-16 16:29:09,804 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 [2022-11-16 16:29:09,893 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 16:29:09,893 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 16:29:12,457 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-16 16:29:12,457 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1424543695] [2022-11-16 16:29:12,457 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1424543695] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 16:29:12,457 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1217374298] [2022-11-16 16:29:12,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:29:12,458 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-16 16:29:12,458 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6289e30a-84ce-488a-9a79-4a100fa2c467/bin/utaipan-Xvt2sAort0/cvc4 [2022-11-16 16:29:12,463 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6289e30a-84ce-488a-9a79-4a100fa2c467/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-16 16:29:12,468 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6289e30a-84ce-488a-9a79-4a100fa2c467/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt (16)] Waiting until timeout for monitored process [2022-11-16 16:29:13,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:29:13,057 INFO L263 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 35 conjunts are in the unsatisfiable core [2022-11-16 16:29:13,061 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 16:29:13,069 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 [2022-11-16 16:29:13,078 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 [2022-11-16 16:29:13,335 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 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-16 16:29:13,772 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:29:13,774 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 [2022-11-16 16:29:13,793 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-16 16:29:13,798 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 [2022-11-16 16:29:13,831 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 16:29:13,832 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 16:29:14,857 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1217374298] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 16:29:14,857 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1041856734] [2022-11-16 16:29:14,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:29:14,858 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 16:29:14,858 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6289e30a-84ce-488a-9a79-4a100fa2c467/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 16:29:14,862 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6289e30a-84ce-488a-9a79-4a100fa2c467/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 16:29:14,883 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6289e30a-84ce-488a-9a79-4a100fa2c467/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-11-16 16:29:15,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:29:15,077 INFO L263 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 31 conjunts are in the unsatisfiable core [2022-11-16 16:29:15,081 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 16:29:15,101 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 [2022-11-16 16:29:15,111 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 [2022-11-16 16:29:15,298 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 [2022-11-16 16:29:15,441 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:29:15,442 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 [2022-11-16 16:29:15,460 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-16 16:29:15,461 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 [2022-11-16 16:29:15,483 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 16:29:15,483 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 16:29:16,391 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1041856734] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 16:29:16,391 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 16:29:16,391 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 12, 11] total 13 [2022-11-16 16:29:16,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47611820] [2022-11-16 16:29:16,392 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 16:29:16,393 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-16 16:29:16,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-16 16:29:16,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-16 16:29:16,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=263, Unknown=3, NotChecked=32, Total=342 [2022-11-16 16:29:16,395 INFO L87 Difference]: Start difference. First operand 135 states and 150 transitions. Second operand has 14 states, 12 states have (on average 3.75) internal successors, (45), 12 states have internal predecessors, (45), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2022-11-16 16:29:22,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 16:29:22,197 INFO L93 Difference]: Finished difference Result 163 states and 184 transitions. [2022-11-16 16:29:22,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-16 16:29:22,198 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 3.75) internal successors, (45), 12 states have internal predecessors, (45), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 29 [2022-11-16 16:29:22,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 16:29:22,199 INFO L225 Difference]: With dead ends: 163 [2022-11-16 16:29:22,199 INFO L226 Difference]: Without dead ends: 163 [2022-11-16 16:29:22,200 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 79 SyntacticMatches, 4 SemanticMatches, 22 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 8.0s TimeCoverageRelationStatistics Valid=76, Invalid=429, Unknown=5, NotChecked=42, Total=552 [2022-11-16 16:29:22,200 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 77 mSDsluCounter, 257 mSDsCounter, 0 mSdLazyCounter, 473 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 297 SdHoareTripleChecker+Invalid, 707 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 473 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 226 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-16 16:29:22,201 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 297 Invalid, 707 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 473 Invalid, 0 Unknown, 226 Unchecked, 1.3s Time] [2022-11-16 16:29:22,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2022-11-16 16:29:22,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 143. [2022-11-16 16:29:22,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 100 states have (on average 1.39) internal successors, (139), 124 states have internal predecessors, (139), 10 states have call successors, (10), 9 states have call predecessors, (10), 8 states have return successors, (11), 9 states have call predecessors, (11), 10 states have call successors, (11) [2022-11-16 16:29:22,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 160 transitions. [2022-11-16 16:29:22,208 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 160 transitions. Word has length 29 [2022-11-16 16:29:22,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 16:29:22,209 INFO L495 AbstractCegarLoop]: Abstraction has 143 states and 160 transitions. [2022-11-16 16:29:22,209 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 3.75) internal successors, (45), 12 states have internal predecessors, (45), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2022-11-16 16:29:22,209 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 160 transitions. [2022-11-16 16:29:22,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-16 16:29:22,210 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 16:29:22,211 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-16 16:29:22,219 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6289e30a-84ce-488a-9a79-4a100fa2c467/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt (16)] Forceful destruction successful, exit code 0 [2022-11-16 16:29:22,439 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6289e30a-84ce-488a-9a79-4a100fa2c467/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2022-11-16 16:29:22,639 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6289e30a-84ce-488a-9a79-4a100fa2c467/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-11-16 16:29:22,827 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6289e30a-84ce-488a-9a79-4a100fa2c467/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6289e30a-84ce-488a-9a79-4a100fa2c467/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6289e30a-84ce-488a-9a79-4a100fa2c467/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 16:29:22,828 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting list_add_tailErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_sub_listErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_sub_listErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_sub_listErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-16 16:29:22,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 16:29:22,828 INFO L85 PathProgramCache]: Analyzing trace with hash 343570640, now seen corresponding path program 1 times [2022-11-16 16:29:22,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-16 16:29:22,829 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1856392050] [2022-11-16 16:29:22,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:29:22,829 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 [2022-11-16 16:29:22,829 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6289e30a-84ce-488a-9a79-4a100fa2c467/bin/utaipan-Xvt2sAort0/mathsat [2022-11-16 16:29:22,830 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6289e30a-84ce-488a-9a79-4a100fa2c467/bin/utaipan-Xvt2sAort0/mathsat -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) [2022-11-16 16:29:22,831 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6289e30a-84ce-488a-9a79-4a100fa2c467/bin/utaipan-Xvt2sAort0/mathsat -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)] Waiting until timeout for monitored process [2022-11-16 16:29:23,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:29:23,220 INFO L263 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 29 conjunts are in the unsatisfiable core [2022-11-16 16:29:23,223 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 16:29:23,268 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 [2022-11-16 16:29:23,612 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:29:23,613 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 14 treesize of output 16 [2022-11-16 16:29:23,636 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-16 16:29:23,637 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 [2022-11-16 16:29:23,864 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 16:29:23,864 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 16:29:31,968 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 98 treesize of output 94 [2022-11-16 16:29:32,078 INFO L321 Elim1Store]: treesize reduction 7, result has 77.4 percent of original size [2022-11-16 16:29:32,078 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 80 treesize of output 97 [2022-11-16 16:29:32,918 INFO L321 Elim1Store]: treesize reduction 7, result has 30.0 percent of original size [2022-11-16 16:29:32,919 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 15 treesize of output 14 [2022-11-16 16:29:33,163 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-16 16:29:33,163 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1856392050] [2022-11-16 16:29:33,163 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1856392050] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 16:29:33,163 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [914679527] [2022-11-16 16:29:33,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:29:33,164 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-16 16:29:33,164 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6289e30a-84ce-488a-9a79-4a100fa2c467/bin/utaipan-Xvt2sAort0/cvc4 [2022-11-16 16:29:33,167 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6289e30a-84ce-488a-9a79-4a100fa2c467/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-16 16:29:33,191 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6289e30a-84ce-488a-9a79-4a100fa2c467/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt (19)] Waiting until timeout for monitored process [2022-11-16 16:29:33,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:29:33,893 INFO L263 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 39 conjunts are in the unsatisfiable core [2022-11-16 16:29:33,912 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 16:29:33,929 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 [2022-11-16 16:29:33,936 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 [2022-11-16 16:29:34,463 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 [2022-11-16 16:29:34,835 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:29:34,836 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 [2022-11-16 16:29:34,853 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-16 16:29:34,854 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 [2022-11-16 16:29:35,161 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:29:35,162 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 [2022-11-16 16:29:35,178 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-16 16:29:35,179 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 [2022-11-16 16:29:35,565 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 16:29:35,567 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 16:29:45,168 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 16:29:45,168 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 44 treesize of output 68 [2022-11-16 16:29:50,981 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [914679527] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 16:29:50,981 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [85977790] [2022-11-16 16:29:50,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:29:50,981 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 16:29:50,981 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6289e30a-84ce-488a-9a79-4a100fa2c467/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 16:29:50,982 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6289e30a-84ce-488a-9a79-4a100fa2c467/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 16:29:50,985 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6289e30a-84ce-488a-9a79-4a100fa2c467/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-11-16 16:29:51,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:29:51,202 INFO L263 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 28 conjunts are in the unsatisfiable core [2022-11-16 16:29:51,205 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 16:29:51,346 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:29:51,347 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 14 treesize of output 16 [2022-11-16 16:29:51,363 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-16 16:29:51,364 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 [2022-11-16 16:29:51,422 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 16:29:51,422 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 16:29:51,861 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 52 treesize of output 48 [2022-11-16 16:29:52,446 INFO L321 Elim1Store]: treesize reduction 7, result has 30.0 percent of original size [2022-11-16 16:29:52,447 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 16 treesize of output 15 [2022-11-16 16:29:52,488 INFO L321 Elim1Store]: treesize reduction 7, result has 30.0 percent of original size [2022-11-16 16:29:52,488 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 16 treesize of output 15 [2022-11-16 16:29:52,519 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 16:29:52,520 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [85977790] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 16:29:52,520 INFO L184 FreeRefinementEngine]: Found 0 perfect and 4 imperfect interpolant sequences. [2022-11-16 16:29:52,520 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14, 14] total 33 [2022-11-16 16:29:52,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645062284] [2022-11-16 16:29:52,521 INFO L85 oduleStraightlineAll]: Using 4 imperfect interpolants to construct interpolant automaton [2022-11-16 16:29:52,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-11-16 16:29:52,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-16 16:29:52,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-11-16 16:29:52,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=1349, Unknown=5, NotChecked=0, Total=1482 [2022-11-16 16:29:52,523 INFO L87 Difference]: Start difference. First operand 143 states and 160 transitions. Second operand has 34 states, 31 states have (on average 1.967741935483871) internal successors, (61), 25 states have internal predecessors, (61), 10 states have call successors, (11), 8 states have call predecessors, (11), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-11-16 16:29:56,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 16:29:56,645 INFO L93 Difference]: Finished difference Result 178 states and 199 transitions. [2022-11-16 16:29:56,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-16 16:29:56,646 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 31 states have (on average 1.967741935483871) internal successors, (61), 25 states have internal predecessors, (61), 10 states have call successors, (11), 8 states have call predecessors, (11), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Word has length 36 [2022-11-16 16:29:56,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 16:29:56,655 INFO L225 Difference]: With dead ends: 178 [2022-11-16 16:29:56,655 INFO L226 Difference]: Without dead ends: 178 [2022-11-16 16:29:56,656 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 128 SyntacticMatches, 4 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 627 ImplicationChecksByTransitivity, 26.0s TimeCoverageRelationStatistics Valid=243, Invalid=2202, Unknown=5, NotChecked=0, Total=2450 [2022-11-16 16:29:56,657 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 143 mSDsluCounter, 525 mSDsCounter, 0 mSdLazyCounter, 994 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 566 SdHoareTripleChecker+Invalid, 1273 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 994 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 265 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-11-16 16:29:56,657 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [143 Valid, 566 Invalid, 1273 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 994 Invalid, 0 Unknown, 265 Unchecked, 3.0s Time] [2022-11-16 16:29:56,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2022-11-16 16:29:56,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 157. [2022-11-16 16:29:56,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 112 states have (on average 1.3660714285714286) internal successors, (153), 137 states have internal predecessors, (153), 11 states have call successors, (11), 10 states have call predecessors, (11), 9 states have return successors, (12), 9 states have call predecessors, (12), 11 states have call successors, (12) [2022-11-16 16:29:56,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 176 transitions. [2022-11-16 16:29:56,662 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 176 transitions. Word has length 36 [2022-11-16 16:29:56,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 16:29:56,663 INFO L495 AbstractCegarLoop]: Abstraction has 157 states and 176 transitions. [2022-11-16 16:29:56,663 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 31 states have (on average 1.967741935483871) internal successors, (61), 25 states have internal predecessors, (61), 10 states have call successors, (11), 8 states have call predecessors, (11), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-11-16 16:29:56,663 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 176 transitions. [2022-11-16 16:29:56,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-11-16 16:29:56,664 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 16:29:56,664 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-16 16:29:56,675 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6289e30a-84ce-488a-9a79-4a100fa2c467/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-11-16 16:29:56,885 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6289e30a-84ce-488a-9a79-4a100fa2c467/bin/utaipan-Xvt2sAort0/mathsat -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)] Forceful destruction successful, exit code 0 [2022-11-16 16:29:57,080 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6289e30a-84ce-488a-9a79-4a100fa2c467/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt (19)] Forceful destruction successful, exit code 0 [2022-11-16 16:29:57,276 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6289e30a-84ce-488a-9a79-4a100fa2c467/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6289e30a-84ce-488a-9a79-4a100fa2c467/bin/utaipan-Xvt2sAort0/mathsat -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 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6289e30a-84ce-488a-9a79-4a100fa2c467/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt [2022-11-16 16:29:57,276 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting list_add_tailErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_sub_listErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_sub_listErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_sub_listErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-16 16:29:57,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 16:29:57,277 INFO L85 PathProgramCache]: Analyzing trace with hash 2012582842, now seen corresponding path program 1 times [2022-11-16 16:29:57,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-16 16:29:57,277 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1808376148] [2022-11-16 16:29:57,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:29:57,277 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 [2022-11-16 16:29:57,277 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6289e30a-84ce-488a-9a79-4a100fa2c467/bin/utaipan-Xvt2sAort0/mathsat [2022-11-16 16:29:57,280 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6289e30a-84ce-488a-9a79-4a100fa2c467/bin/utaipan-Xvt2sAort0/mathsat -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) [2022-11-16 16:29:57,286 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6289e30a-84ce-488a-9a79-4a100fa2c467/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2022-11-16 16:29:57,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:29:57,713 INFO L263 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 75 conjunts are in the unsatisfiable core [2022-11-16 16:29:57,718 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 16:29:57,725 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 [2022-11-16 16:29:57,788 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 [2022-11-16 16:29:57,795 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 [2022-11-16 16:29:57,846 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:29:57,847 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 21 treesize of output 20 [2022-11-16 16:29:57,857 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:29:57,858 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 [2022-11-16 16:29:57,926 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-16 16:29:57,926 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 [2022-11-16 16:29:58,071 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 [2022-11-16 16:29:58,084 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 [2022-11-16 16:29:58,108 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 7 treesize of output 3 [2022-11-16 16:29:58,117 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 7 treesize of output 3 [2022-11-16 16:29:59,795 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 65 treesize of output 36 [2022-11-16 16:29:59,863 INFO L321 Elim1Store]: treesize reduction 46, result has 19.3 percent of original size [2022-11-16 16:29:59,864 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 96 treesize of output 128 [2022-11-16 16:29:59,872 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 132 treesize of output 96 [2022-11-16 16:29:59,884 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 42 treesize of output 24 [2022-11-16 16:30:00,343 INFO L321 Elim1Store]: treesize reduction 56, result has 35.6 percent of original size [2022-11-16 16:30:00,343 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 30 treesize of output 51 [2022-11-16 16:30:00,639 INFO L321 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-11-16 16:30:00,640 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 107 treesize of output 91 [2022-11-16 16:30:01,074 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 15 [2022-11-16 16:30:01,420 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 16:30:01,420 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 16:30:06,114 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-16 16:30:06,114 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1808376148] [2022-11-16 16:30:06,114 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1808376148] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 16:30:06,115 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [784515475] [2022-11-16 16:30:06,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:30:06,115 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-16 16:30:06,115 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6289e30a-84ce-488a-9a79-4a100fa2c467/bin/utaipan-Xvt2sAort0/cvc4 [2022-11-16 16:30:06,116 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6289e30a-84ce-488a-9a79-4a100fa2c467/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-16 16:30:06,119 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6289e30a-84ce-488a-9a79-4a100fa2c467/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt (22)] Waiting until timeout for monitored process [2022-11-16 16:30:07,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:30:07,116 INFO L263 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 79 conjunts are in the unsatisfiable core [2022-11-16 16:30:07,124 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 16:30:07,137 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 [2022-11-16 16:30:07,189 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 [2022-11-16 16:30:07,200 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 [2022-11-16 16:30:07,226 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:30:07,227 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 [2022-11-16 16:30:07,243 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:30:07,244 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 [2022-11-16 16:30:07,328 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-16 16:30:07,328 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 [2022-11-16 16:30:07,414 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 [2022-11-16 16:30:07,453 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 [2022-11-16 16:30:07,479 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 7 treesize of output 3 [2022-11-16 16:30:07,491 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 7 treesize of output 3 [2022-11-16 16:30:08,575 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 65 treesize of output 36 [2022-11-16 16:30:08,642 INFO L321 Elim1Store]: treesize reduction 46, result has 19.3 percent of original size [2022-11-16 16:30:08,643 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 96 treesize of output 128 [2022-11-16 16:30:08,651 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 132 treesize of output 96 [2022-11-16 16:30:08,661 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 42 treesize of output 24 [2022-11-16 16:30:09,168 INFO L321 Elim1Store]: treesize reduction 56, result has 35.6 percent of original size [2022-11-16 16:30:09,168 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 30 treesize of output 51 [2022-11-16 16:30:09,493 INFO L321 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-11-16 16:30:09,493 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 107 treesize of output 91 [2022-11-16 16:30:09,564 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 15 [2022-11-16 16:30:09,765 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 16:30:09,766 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 16:30:12,033 WARN L833 $PredicateComparison]: unable to prove that (forall ((|v_create_sub_list_insert_sub_~sub~0#1.base_35| (_ BitVec 32)) (v_ArrVal_960 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1081 (_ BitVec 1))) (or (= (bvadd (select (store |c_#valid| |v_create_sub_list_insert_sub_~sub~0#1.base_35| v_ArrVal_1081) (select (select (store |c_#memory_$Pointer$.base| |v_create_sub_list_insert_sub_~sub~0#1.base_35| v_ArrVal_960) |c_create_sub_list_~sub#1.base|) (bvadd (_ bv4 32) |c_create_sub_list_~sub#1.offset|))) (_ bv1 1)) (_ bv0 1)) (not (= (_ bv0 1) (select |c_#valid| |v_create_sub_list_insert_sub_~sub~0#1.base_35|))))) is different from false [2022-11-16 16:30:14,062 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [784515475] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 16:30:14,063 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1332985140] [2022-11-16 16:30:14,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:30:14,063 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 16:30:14,063 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6289e30a-84ce-488a-9a79-4a100fa2c467/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 16:30:14,064 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6289e30a-84ce-488a-9a79-4a100fa2c467/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 16:30:14,067 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6289e30a-84ce-488a-9a79-4a100fa2c467/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-11-16 16:30:14,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:30:14,354 INFO L263 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 82 conjunts are in the unsatisfiable core [2022-11-16 16:30:14,361 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 16:30:14,368 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 7 [2022-11-16 16:30:14,377 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 [2022-11-16 16:30:14,808 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 [2022-11-16 16:30:14,818 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 [2022-11-16 16:30:15,052 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 [2022-11-16 16:30:15,064 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:30:15,065 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 [2022-11-16 16:30:15,081 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:30:15,083 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 [2022-11-16 16:30:15,167 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-16 16:30:15,168 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 [2022-11-16 16:30:15,254 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 16 treesize of output 18 [2022-11-16 16:30:15,289 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 [2022-11-16 16:30:15,318 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 7 treesize of output 3 [2022-11-16 16:30:15,326 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 7 treesize of output 3 [2022-11-16 16:30:16,377 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 65 treesize of output 36 [2022-11-16 16:30:16,453 INFO L321 Elim1Store]: treesize reduction 46, result has 19.3 percent of original size [2022-11-16 16:30:16,454 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 96 treesize of output 128 [2022-11-16 16:30:16,464 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 132 treesize of output 96 [2022-11-16 16:30:16,476 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 42 treesize of output 24 [2022-11-16 16:30:16,979 INFO L321 Elim1Store]: treesize reduction 56, result has 35.6 percent of original size [2022-11-16 16:30:16,979 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 30 treesize of output 51 [2022-11-16 16:30:17,365 INFO L321 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-11-16 16:30:17,365 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 76 treesize of output 66 [2022-11-16 16:30:17,444 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 27 treesize of output 15 [2022-11-16 16:30:17,511 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 16:30:17,511 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 16:30:17,572 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1205 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| |c_create_sub_list_insert_sub_~sub~0#1.base| v_ArrVal_1205) |c_create_sub_list_insert_sub_~head#1.base|) (bvadd (_ bv4 32) |c_create_sub_list_insert_sub_~head#1.offset|))) (_ bv1 1)))) is different from false [2022-11-16 16:30:19,599 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1332985140] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 16:30:19,599 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 16:30:19,599 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 22] total 30 [2022-11-16 16:30:19,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239832038] [2022-11-16 16:30:19,599 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 16:30:19,600 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-11-16 16:30:19,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-16 16:30:19,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-11-16 16:30:19,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=1328, Unknown=44, NotChecked=150, Total=1640 [2022-11-16 16:30:19,604 INFO L87 Difference]: Start difference. First operand 157 states and 176 transitions. Second operand has 31 states, 29 states have (on average 1.6551724137931034) internal successors, (48), 27 states have internal predecessors, (48), 4 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 16:30:22,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 16:30:22,522 INFO L93 Difference]: Finished difference Result 172 states and 191 transitions. [2022-11-16 16:30:22,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-16 16:30:22,523 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 29 states have (on average 1.6551724137931034) internal successors, (48), 27 states have internal predecessors, (48), 4 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) Word has length 35 [2022-11-16 16:30:22,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 16:30:22,524 INFO L225 Difference]: With dead ends: 172 [2022-11-16 16:30:22,524 INFO L226 Difference]: Without dead ends: 172 [2022-11-16 16:30:22,526 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 94 SyntacticMatches, 12 SemanticMatches, 48 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 555 ImplicationChecksByTransitivity, 12.8s TimeCoverageRelationStatistics Valid=201, Invalid=2008, Unknown=55, NotChecked=186, Total=2450 [2022-11-16 16:30:22,526 INFO L413 NwaCegarLoop]: 74 mSDtfsCounter, 35 mSDsluCounter, 1092 mSDsCounter, 0 mSdLazyCounter, 464 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 1166 SdHoareTripleChecker+Invalid, 1102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 464 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 631 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-11-16 16:30:22,529 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 1166 Invalid, 1102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 464 Invalid, 0 Unknown, 631 Unchecked, 1.4s Time] [2022-11-16 16:30:22,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2022-11-16 16:30:22,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 171. [2022-11-16 16:30:22,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 124 states have (on average 1.3387096774193548) internal successors, (166), 150 states have internal predecessors, (166), 12 states have call successors, (12), 11 states have call predecessors, (12), 10 states have return successors, (13), 9 states have call predecessors, (13), 12 states have call successors, (13) [2022-11-16 16:30:22,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 191 transitions. [2022-11-16 16:30:22,537 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 191 transitions. Word has length 35 [2022-11-16 16:30:22,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 16:30:22,538 INFO L495 AbstractCegarLoop]: Abstraction has 171 states and 191 transitions. [2022-11-16 16:30:22,538 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 29 states have (on average 1.6551724137931034) internal successors, (48), 27 states have internal predecessors, (48), 4 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 16:30:22,539 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 191 transitions. [2022-11-16 16:30:22,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-11-16 16:30:22,539 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 16:30:22,540 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-16 16:30:22,561 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6289e30a-84ce-488a-9a79-4a100fa2c467/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2022-11-16 16:30:22,764 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6289e30a-84ce-488a-9a79-4a100fa2c467/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt (22)] Forceful destruction successful, exit code 0 [2022-11-16 16:30:22,966 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6289e30a-84ce-488a-9a79-4a100fa2c467/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2022-11-16 16:30:23,159 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6289e30a-84ce-488a-9a79-4a100fa2c467/bin/utaipan-Xvt2sAort0/mathsat -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 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6289e30a-84ce-488a-9a79-4a100fa2c467/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6289e30a-84ce-488a-9a79-4a100fa2c467/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 16:30:23,159 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting list_add_tailErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_sub_listErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_sub_listErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_sub_listErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-16 16:30:23,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 16:30:23,160 INFO L85 PathProgramCache]: Analyzing trace with hash 2012582843, now seen corresponding path program 1 times [2022-11-16 16:30:23,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-16 16:30:23,160 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1275658959] [2022-11-16 16:30:23,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:30:23,161 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 [2022-11-16 16:30:23,161 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6289e30a-84ce-488a-9a79-4a100fa2c467/bin/utaipan-Xvt2sAort0/mathsat [2022-11-16 16:30:23,162 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6289e30a-84ce-488a-9a79-4a100fa2c467/bin/utaipan-Xvt2sAort0/mathsat -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) [2022-11-16 16:30:23,170 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6289e30a-84ce-488a-9a79-4a100fa2c467/bin/utaipan-Xvt2sAort0/mathsat -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)] Waiting until timeout for monitored process [2022-11-16 16:30:23,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:30:23,754 INFO L263 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 97 conjunts are in the unsatisfiable core [2022-11-16 16:30:23,760 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 16:30:23,765 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 [2022-11-16 16:30:23,850 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 [2022-11-16 16:30:23,859 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-16 16:30:23,927 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:30:23,928 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 [2022-11-16 16:30:23,942 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:30:23,943 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 [2022-11-16 16:30:24,017 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-16 16:30:24,018 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 [2022-11-16 16:30:24,066 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 6 treesize of output 5 [2022-11-16 16:30:24,258 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 [2022-11-16 16:30:24,298 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 [2022-11-16 16:30:24,329 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 7 treesize of output 3 [2022-11-16 16:30:24,342 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 7 treesize of output 3 [2022-11-16 16:30:27,172 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 120 treesize of output 79 [2022-11-16 16:30:27,182 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 0 case distinctions, treesize of input 100 treesize of output 71 [2022-11-16 16:30:27,323 INFO L321 Elim1Store]: treesize reduction 34, result has 24.4 percent of original size [2022-11-16 16:30:27,323 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 124 treesize of output 150 [2022-11-16 16:30:27,335 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:30:27,336 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 154 treesize of output 106 [2022-11-16 16:30:27,352 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:30:27,360 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 30 treesize of output 27 [2022-11-16 16:30:27,402 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 87 treesize of output 30 [2022-11-16 16:30:27,426 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:30:27,427 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 20 [2022-11-16 16:30:27,757 INFO L321 Elim1Store]: treesize reduction 19, result has 47.2 percent of original size [2022-11-16 16:30:27,757 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 1 case distinctions, treesize of input 16 treesize of output 26 [2022-11-16 16:30:27,815 INFO L321 Elim1Store]: treesize reduction 12, result has 52.0 percent of original size [2022-11-16 16:30:27,815 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 24 treesize of output 26 [2022-11-16 16:30:28,047 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-16 16:30:28,055 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 32 treesize of output 30 [2022-11-16 16:30:28,563 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 25 treesize of output 13 [2022-11-16 16:30:28,575 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 15 treesize of output 7 [2022-11-16 16:30:28,862 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 16:30:28,862 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 16:30:30,303 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv4 32) |c_create_sub_list_insert_sub_~head#1.offset|))) (and (forall ((v_ArrVal_1334 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.offset| |c_create_sub_list_insert_sub_~sub~0#1.base| v_ArrVal_1334) |c_create_sub_list_insert_sub_~head#1.base|) .cse1))) (bvule .cse0 (bvadd .cse0 (_ bv4 32))))) (forall ((v_ArrVal_1335 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1334 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| |c_create_sub_list_insert_sub_~sub~0#1.base| v_ArrVal_1334) |c_create_sub_list_insert_sub_~head#1.base|) .cse1) (_ bv4 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_create_sub_list_insert_sub_~sub~0#1.base| v_ArrVal_1335) |c_create_sub_list_insert_sub_~head#1.base|) .cse1)))))) is different from false [2022-11-16 16:30:45,398 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-16 16:30:45,398 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1275658959] [2022-11-16 16:30:45,398 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1275658959] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 16:30:45,398 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1940151673] [2022-11-16 16:30:45,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:30:45,398 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-16 16:30:45,399 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6289e30a-84ce-488a-9a79-4a100fa2c467/bin/utaipan-Xvt2sAort0/cvc4 [2022-11-16 16:30:45,400 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6289e30a-84ce-488a-9a79-4a100fa2c467/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-16 16:30:45,401 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6289e30a-84ce-488a-9a79-4a100fa2c467/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt (25)] Waiting until timeout for monitored process [2022-11-16 16:30:47,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:30:47,151 INFO L263 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 100 conjunts are in the unsatisfiable core [2022-11-16 16:30:47,158 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 16:30:47,166 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 [2022-11-16 16:30:47,205 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 [2022-11-16 16:30:47,217 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 [2022-11-16 16:30:47,242 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:30:47,243 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 [2022-11-16 16:30:47,257 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:30:47,258 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 [2022-11-16 16:30:47,323 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-16 16:30:47,324 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 [2022-11-16 16:30:47,352 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 6 treesize of output 5 [2022-11-16 16:30:47,530 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 [2022-11-16 16:30:47,547 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 [2022-11-16 16:30:47,582 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 7 treesize of output 3 [2022-11-16 16:30:47,591 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 7 treesize of output 3 [2022-11-16 16:30:54,731 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 120 treesize of output 91 [2022-11-16 16:30:54,743 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:30:54,754 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 27 [2022-11-16 16:30:54,766 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 86 treesize of output 45 [2022-11-16 16:30:54,831 INFO L321 Elim1Store]: treesize reduction 34, result has 24.4 percent of original size [2022-11-16 16:30:54,831 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 95 treesize of output 125 [2022-11-16 16:30:54,839 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:30:54,841 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 129 treesize of output 89 [2022-11-16 16:30:54,919 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:30:54,919 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 20 [2022-11-16 16:30:55,580 INFO L321 Elim1Store]: treesize reduction 19, result has 47.2 percent of original size [2022-11-16 16:30:55,580 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 1 case distinctions, treesize of input 16 treesize of output 26 [2022-11-16 16:30:55,644 INFO L321 Elim1Store]: treesize reduction 12, result has 52.0 percent of original size [2022-11-16 16:30:55,644 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 24 treesize of output 26 [2022-11-16 16:30:56,192 INFO L321 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-11-16 16:30:56,193 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 105 treesize of output 89 [2022-11-16 16:30:56,212 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-16 16:30:56,265 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 25 treesize of output 13 [2022-11-16 16:30:56,277 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 15 treesize of output 7 [2022-11-16 16:30:56,317 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 16:30:56,317 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 16:30:56,536 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv4 32) |c_create_sub_list_insert_sub_~head#1.offset|))) (and (forall ((v_ArrVal_1475 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.offset| |c_create_sub_list_insert_sub_~sub~0#1.base| v_ArrVal_1475) |c_create_sub_list_insert_sub_~head#1.base|) .cse1))) (bvule .cse0 (bvadd (_ bv4 32) .cse0)))) (forall ((v_ArrVal_1474 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1475 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv4 32) (select (select (store |c_#memory_$Pointer$.offset| |c_create_sub_list_insert_sub_~sub~0#1.base| v_ArrVal_1475) |c_create_sub_list_insert_sub_~head#1.base|) .cse1)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_create_sub_list_insert_sub_~sub~0#1.base| v_ArrVal_1474) |c_create_sub_list_insert_sub_~head#1.base|) .cse1)))))) is different from false [2022-11-16 16:31:13,121 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1940151673] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 16:31:13,121 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [318015183] [2022-11-16 16:31:13,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:31:13,122 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 16:31:13,122 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6289e30a-84ce-488a-9a79-4a100fa2c467/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 16:31:13,123 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6289e30a-84ce-488a-9a79-4a100fa2c467/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 16:31:13,125 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6289e30a-84ce-488a-9a79-4a100fa2c467/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2022-11-16 16:31:13,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:31:13,417 INFO L263 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 106 conjunts are in the unsatisfiable core [2022-11-16 16:31:13,423 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 16:31:13,429 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 [2022-11-16 16:31:13,437 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 [2022-11-16 16:31:14,704 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 [2022-11-16 16:31:14,715 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 [2022-11-16 16:31:15,155 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:31:15,155 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 [2022-11-16 16:31:15,168 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:31:15,169 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 [2022-11-16 16:31:15,244 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-16 16:31:15,244 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 [2022-11-16 16:31:15,263 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 [2022-11-16 16:31:15,634 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:31:15,635 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 [2022-11-16 16:31:15,677 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:31:15,677 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 [2022-11-16 16:31:15,704 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 [2022-11-16 16:31:15,710 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 [2022-11-16 16:31:26,006 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 0 case distinctions, treesize of input 120 treesize of output 91 [2022-11-16 16:31:26,035 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:31:26,044 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:31:26,046 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 27 [2022-11-16 16:31:26,054 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 0 case distinctions, treesize of input 73 treesize of output 38 [2022-11-16 16:31:26,123 INFO L321 Elim1Store]: treesize reduction 34, result has 24.4 percent of original size [2022-11-16 16:31:26,123 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 85 treesize of output 117 [2022-11-16 16:31:26,130 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:31:26,131 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 121 treesize of output 85 [2022-11-16 16:31:26,191 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:31:26,192 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 20 [2022-11-16 16:31:26,846 INFO L321 Elim1Store]: treesize reduction 26, result has 33.3 percent of original size [2022-11-16 16:31:26,846 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 24 treesize of output 26 [2022-11-16 16:31:26,879 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-11-16 16:31:26,880 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 1 case distinctions, treesize of input 21 treesize of output 26 [2022-11-16 16:31:27,410 INFO L321 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-11-16 16:31:27,411 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 97 treesize of output 83 [2022-11-16 16:31:27,455 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-16 16:31:28,736 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 25 treesize of output 13 [2022-11-16 16:31:28,763 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 15 treesize of output 7 [2022-11-16 16:31:29,895 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 16:31:29,896 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 16:31:30,034 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse0 (bvadd (_ bv4 32) |c_create_sub_list_insert_sub_~head#1.offset|))) (and (forall ((v_ArrVal_1618 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1617 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv4 32) (select (select (store |c_#memory_$Pointer$.offset| |c_create_sub_list_insert_sub_~sub~0#1.base| v_ArrVal_1618) |c_create_sub_list_insert_sub_~head#1.base|) .cse0)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_create_sub_list_insert_sub_~sub~0#1.base| v_ArrVal_1617) |c_create_sub_list_insert_sub_~head#1.base|) .cse0)))) (forall ((v_ArrVal_1618 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (select (select (store |c_#memory_$Pointer$.offset| |c_create_sub_list_insert_sub_~sub~0#1.base| v_ArrVal_1618) |c_create_sub_list_insert_sub_~head#1.base|) .cse0))) (bvule .cse1 (bvadd (_ bv4 32) .cse1)))))) is different from false [2022-11-16 16:31:42,609 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [318015183] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 16:31:42,609 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 16:31:42,609 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 49 [2022-11-16 16:31:42,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654962264] [2022-11-16 16:31:42,610 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 16:31:42,610 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2022-11-16 16:31:42,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-16 16:31:42,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2022-11-16 16:31:42,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=227, Invalid=3254, Unknown=71, NotChecked=354, Total=3906 [2022-11-16 16:31:42,620 INFO L87 Difference]: Start difference. First operand 171 states and 191 transitions. Second operand has 50 states, 47 states have (on average 1.553191489361702) internal successors, (73), 44 states have internal predecessors, (73), 6 states have call successors, (6), 6 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-16 16:31:52,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 16:31:52,323 INFO L93 Difference]: Finished difference Result 171 states and 190 transitions. [2022-11-16 16:31:52,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-16 16:31:52,324 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 47 states have (on average 1.553191489361702) internal successors, (73), 44 states have internal predecessors, (73), 6 states have call successors, (6), 6 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 35 [2022-11-16 16:31:52,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 16:31:52,325 INFO L225 Difference]: With dead ends: 171 [2022-11-16 16:31:52,325 INFO L226 Difference]: Without dead ends: 171 [2022-11-16 16:31:52,327 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 82 SyntacticMatches, 2 SemanticMatches, 71 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 1452 ImplicationChecksByTransitivity, 55.4s TimeCoverageRelationStatistics Valid=331, Invalid=4437, Unknown=74, NotChecked=414, Total=5256 [2022-11-16 16:31:52,327 INFO L413 NwaCegarLoop]: 75 mSDtfsCounter, 32 mSDsluCounter, 1252 mSDsCounter, 0 mSdLazyCounter, 392 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 1327 SdHoareTripleChecker+Invalid, 1200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 392 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 804 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-16 16:31:52,327 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 1327 Invalid, 1200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 392 Invalid, 0 Unknown, 804 Unchecked, 1.0s Time] [2022-11-16 16:31:52,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2022-11-16 16:31:52,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 171. [2022-11-16 16:31:52,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 124 states have (on average 1.3306451612903225) internal successors, (165), 150 states have internal predecessors, (165), 12 states have call successors, (12), 11 states have call predecessors, (12), 10 states have return successors, (13), 9 states have call predecessors, (13), 12 states have call successors, (13) [2022-11-16 16:31:52,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 190 transitions. [2022-11-16 16:31:52,334 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 190 transitions. Word has length 35 [2022-11-16 16:31:52,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 16:31:52,334 INFO L495 AbstractCegarLoop]: Abstraction has 171 states and 190 transitions. [2022-11-16 16:31:52,334 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 47 states have (on average 1.553191489361702) internal successors, (73), 44 states have internal predecessors, (73), 6 states have call successors, (6), 6 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-16 16:31:52,334 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 190 transitions. [2022-11-16 16:31:52,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-11-16 16:31:52,335 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 16:31:52,336 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-16 16:31:52,360 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6289e30a-84ce-488a-9a79-4a100fa2c467/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt (25)] Forceful destruction successful, exit code 0 [2022-11-16 16:31:52,553 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6289e30a-84ce-488a-9a79-4a100fa2c467/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2022-11-16 16:31:52,757 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6289e30a-84ce-488a-9a79-4a100fa2c467/bin/utaipan-Xvt2sAort0/mathsat -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)] Ended with exit code 0 [2022-11-16 16:31:52,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6289e30a-84ce-488a-9a79-4a100fa2c467/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt,26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6289e30a-84ce-488a-9a79-4a100fa2c467/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6289e30a-84ce-488a-9a79-4a100fa2c467/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 16:31:52,948 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting list_add_tailErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_sub_listErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_sub_listErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_sub_listErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-16 16:31:52,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 16:31:52,948 INFO L85 PathProgramCache]: Analyzing trace with hash -541096591, now seen corresponding path program 1 times [2022-11-16 16:31:52,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-16 16:31:52,948 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1145625720] [2022-11-16 16:31:52,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:31:52,949 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 [2022-11-16 16:31:52,949 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6289e30a-84ce-488a-9a79-4a100fa2c467/bin/utaipan-Xvt2sAort0/mathsat [2022-11-16 16:31:52,949 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6289e30a-84ce-488a-9a79-4a100fa2c467/bin/utaipan-Xvt2sAort0/mathsat -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) [2022-11-16 16:31:52,957 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6289e30a-84ce-488a-9a79-4a100fa2c467/bin/utaipan-Xvt2sAort0/mathsat -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 [2022-11-16 16:31:53,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:31:53,243 INFO L263 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-16 16:31:53,244 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 16:31:53,410 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 16:31:53,410 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 16:31:53,411 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-16 16:31:53,411 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1145625720] [2022-11-16 16:31:53,411 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1145625720] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 16:31:53,411 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 16:31:53,411 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-16 16:31:53,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221927070] [2022-11-16 16:31:53,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 16:31:53,412 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 16:31:53,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-16 16:31:53,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 16:31:53,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-11-16 16:31:53,412 INFO L87 Difference]: Start difference. First operand 171 states and 190 transitions. Second operand has 10 states, 9 states have (on average 3.5555555555555554) internal successors, (32), 8 states have internal predecessors, (32), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-16 16:31:53,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 16:31:53,955 INFO L93 Difference]: Finished difference Result 175 states and 188 transitions. [2022-11-16 16:31:53,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-16 16:31:53,956 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.5555555555555554) internal successors, (32), 8 states have internal predecessors, (32), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 38 [2022-11-16 16:31:53,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 16:31:53,958 INFO L225 Difference]: With dead ends: 175 [2022-11-16 16:31:53,958 INFO L226 Difference]: Without dead ends: 175 [2022-11-16 16:31:53,958 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2022-11-16 16:31:53,959 INFO L413 NwaCegarLoop]: 91 mSDtfsCounter, 87 mSDsluCounter, 516 mSDsCounter, 0 mSdLazyCounter, 176 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 607 SdHoareTripleChecker+Invalid, 179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-16 16:31:53,959 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 607 Invalid, 179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 176 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-16 16:31:53,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2022-11-16 16:31:53,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 171. [2022-11-16 16:31:53,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 124 states have (on average 1.3064516129032258) internal successors, (162), 150 states have internal predecessors, (162), 12 states have call successors, (12), 11 states have call predecessors, (12), 10 states have return successors, (13), 9 states have call predecessors, (13), 12 states have call successors, (13) [2022-11-16 16:31:53,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 187 transitions. [2022-11-16 16:31:53,966 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 187 transitions. Word has length 38 [2022-11-16 16:31:53,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 16:31:53,966 INFO L495 AbstractCegarLoop]: Abstraction has 171 states and 187 transitions. [2022-11-16 16:31:53,967 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 3.5555555555555554) internal successors, (32), 8 states have internal predecessors, (32), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-16 16:31:53,967 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 187 transitions. [2022-11-16 16:31:53,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-11-16 16:31:53,968 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 16:31:53,968 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 16:31:53,983 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6289e30a-84ce-488a-9a79-4a100fa2c467/bin/utaipan-Xvt2sAort0/mathsat -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)] Forceful destruction successful, exit code 0 [2022-11-16 16:31:54,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6289e30a-84ce-488a-9a79-4a100fa2c467/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 16:31:54,179 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting list_add_tailErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_sub_listErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_sub_listErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_sub_listErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-16 16:31:54,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 16:31:54,179 INFO L85 PathProgramCache]: Analyzing trace with hash -796271557, now seen corresponding path program 1 times [2022-11-16 16:31:54,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-16 16:31:54,180 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [872031914] [2022-11-16 16:31:54,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:31:54,180 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 [2022-11-16 16:31:54,180 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6289e30a-84ce-488a-9a79-4a100fa2c467/bin/utaipan-Xvt2sAort0/mathsat [2022-11-16 16:31:54,181 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6289e30a-84ce-488a-9a79-4a100fa2c467/bin/utaipan-Xvt2sAort0/mathsat -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) [2022-11-16 16:31:54,189 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6289e30a-84ce-488a-9a79-4a100fa2c467/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2022-11-16 16:31:54,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:31:54,662 INFO L263 TraceCheckSpWp]: Trace formula consists of 356 conjuncts, 47 conjunts are in the unsatisfiable core [2022-11-16 16:31:54,664 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 16:31:54,874 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 [2022-11-16 16:31:54,884 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 [2022-11-16 16:31:54,943 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:31:54,944 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 [2022-11-16 16:31:54,955 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:31:54,956 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 [2022-11-16 16:31:54,983 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-16 16:31:54,983 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 [2022-11-16 16:31:55,070 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 [2022-11-16 16:31:55,078 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 [2022-11-16 16:31:55,276 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 [2022-11-16 16:31:55,284 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 [2022-11-16 16:31:55,423 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 16:31:55,424 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 16:31:55,712 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 16:31:55,712 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 46 treesize of output 50 [2022-11-16 16:31:56,321 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse0 (bvadd (_ bv4 32) |c_create_sub_list_insert_sub_~head#1.offset|))) (and (forall ((v_ArrVal_1838 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_create_sub_list_insert_sub_~head#1.base| (select (select (store |c_#memory_$Pointer$.base| |c_create_sub_list_insert_sub_~sub~0#1.base| v_ArrVal_1838) |c_create_sub_list_insert_sub_~head#1.base|) .cse0))) (forall ((v_ArrVal_1837 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (select (select (store |c_#memory_$Pointer$.offset| |c_create_sub_list_insert_sub_~sub~0#1.base| v_ArrVal_1837) |c_create_sub_list_insert_sub_~head#1.base|) .cse0))) (bvule .cse1 (bvadd (_ bv4 32) .cse1)))) (forall ((v_ArrVal_1837 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv4 32) (select (select (store |c_#memory_$Pointer$.offset| |c_create_sub_list_insert_sub_~sub~0#1.base| v_ArrVal_1837) |c_create_sub_list_insert_sub_~head#1.base|) .cse0)) (bvadd (_ bv8 32) |c_create_sub_list_insert_sub_~head#1.offset|))))) is different from false [2022-11-16 16:32:01,424 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 16:32:01,424 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 2 case distinctions, treesize of input 25 treesize of output 31 [2022-11-16 16:32:01,428 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 24 [2022-11-16 16:32:01,434 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 3 [2022-11-16 16:32:01,459 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 16:32:01,459 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 2 case distinctions, treesize of input 49 treesize of output 42 [2022-11-16 16:32:01,463 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 16:32:01,466 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 28 treesize of output 10 [2022-11-16 16:32:01,504 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 16:32:01,504 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 2 case distinctions, treesize of input 29 treesize of output 35 [2022-11-16 16:32:01,508 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 16:32:01,511 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 [2022-11-16 16:32:02,749 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 16:32:02,750 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 38 treesize of output 62 [2022-11-16 16:32:03,034 INFO L321 Elim1Store]: treesize reduction 7, result has 30.0 percent of original size [2022-11-16 16:32:03,035 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 16 treesize of output 15 [2022-11-16 16:32:03,067 INFO L321 Elim1Store]: treesize reduction 7, result has 30.0 percent of original size [2022-11-16 16:32:03,068 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 16 treesize of output 15 [2022-11-16 16:32:03,096 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 9 refuted. 1 times theorem prover too weak. 0 trivial. 2 not checked. [2022-11-16 16:32:03,096 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-16 16:32:03,097 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [872031914] [2022-11-16 16:32:03,097 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [872031914] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 16:32:03,097 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1806791378] [2022-11-16 16:32:03,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:32:03,097 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-16 16:32:03,097 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6289e30a-84ce-488a-9a79-4a100fa2c467/bin/utaipan-Xvt2sAort0/cvc4 [2022-11-16 16:32:03,099 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6289e30a-84ce-488a-9a79-4a100fa2c467/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-16 16:32:03,100 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6289e30a-84ce-488a-9a79-4a100fa2c467/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt (29)] Waiting until timeout for monitored process [2022-11-16 16:32:04,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:32:04,903 INFO L263 TraceCheckSpWp]: Trace formula consists of 356 conjuncts, 65 conjunts are in the unsatisfiable core [2022-11-16 16:32:04,907 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 16:32:04,912 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 [2022-11-16 16:32:04,920 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 [2022-11-16 16:32:05,398 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 [2022-11-16 16:32:05,786 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:32:05,787 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 [2022-11-16 16:32:05,802 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-16 16:32:05,802 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 [2022-11-16 16:32:06,074 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 [2022-11-16 16:32:06,083 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 [2022-11-16 16:32:06,244 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:32:06,245 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 [2022-11-16 16:32:06,255 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:32:06,255 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 [2022-11-16 16:32:06,290 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-16 16:32:06,290 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 [2022-11-16 16:32:06,306 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 [2022-11-16 16:32:06,473 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 [2022-11-16 16:32:06,483 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 [2022-11-16 16:32:06,918 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 [2022-11-16 16:32:06,925 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 [2022-11-16 16:32:07,177 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 1 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 16:32:07,177 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 16:32:08,179 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv4 32) |c_create_sub_list_insert_sub_~head#1.offset|))) (and (forall ((v_ArrVal_1956 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.offset| |c_create_sub_list_insert_sub_~sub~0#1.base| v_ArrVal_1956) |c_create_sub_list_insert_sub_~head#1.base|) .cse1))) (bvule .cse0 (bvadd (_ bv4 32) .cse0)))) (forall ((v_ArrVal_1955 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1956 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv4 32) (select (select (store |c_#memory_$Pointer$.offset| |c_create_sub_list_insert_sub_~sub~0#1.base| v_ArrVal_1956) |c_create_sub_list_insert_sub_~head#1.base|) .cse1)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_create_sub_list_insert_sub_~sub~0#1.base| v_ArrVal_1955) |c_create_sub_list_insert_sub_~head#1.base|) .cse1)))))) is different from false [2022-11-16 16:32:11,977 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 16:32:11,978 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 2 case distinctions, treesize of input 54 treesize of output 60 [2022-11-16 16:32:11,984 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 94 treesize of output 82 [2022-11-16 16:32:12,011 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 16:32:12,011 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 2 case distinctions, treesize of input 78 treesize of output 70 [2022-11-16 16:32:12,017 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 108 treesize of output 90 [2022-11-16 16:32:12,030 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 46 treesize of output 38 [2022-11-16 16:32:12,035 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 78 treesize of output 70 [2022-11-16 16:32:12,496 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 16:32:12,496 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 2 case distinctions, treesize of input 49 treesize of output 42 [2022-11-16 16:32:12,502 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 50 treesize of output 32 [2022-11-16 16:32:12,512 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2022-11-16 16:32:37,893 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 16:32:37,893 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 93 treesize of output 145 [2022-11-16 16:32:46,385 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1806791378] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 16:32:46,386 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1741968672] [2022-11-16 16:32:46,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:32:46,386 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 16:32:46,386 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6289e30a-84ce-488a-9a79-4a100fa2c467/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 16:32:46,387 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6289e30a-84ce-488a-9a79-4a100fa2c467/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 16:32:46,390 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6289e30a-84ce-488a-9a79-4a100fa2c467/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2022-11-16 16:32:46,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:32:46,711 INFO L263 TraceCheckSpWp]: Trace formula consists of 356 conjuncts, 51 conjunts are in the unsatisfiable core [2022-11-16 16:32:46,715 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 16:32:46,822 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 [2022-11-16 16:32:46,831 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 [2022-11-16 16:32:46,856 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:32:46,857 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 [2022-11-16 16:32:46,868 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:32:46,869 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 [2022-11-16 16:32:46,905 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-16 16:32:46,905 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 [2022-11-16 16:32:46,949 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 16 treesize of output 18 [2022-11-16 16:32:46,956 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 [2022-11-16 16:32:47,091 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 16:32:47,092 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 7 [2022-11-16 16:32:47,105 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 16:32:47,105 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 7 [2022-11-16 16:32:47,436 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 16:32:47,436 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 16:32:47,536 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 16:32:47,537 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 46 treesize of output 50 [2022-11-16 16:32:47,693 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse0 (bvadd (_ bv4 32) |c_create_sub_list_insert_sub_~head#1.offset|))) (and (forall ((v_ArrVal_2074 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv4 32) (select (select (store |c_#memory_$Pointer$.offset| |c_create_sub_list_insert_sub_~sub~0#1.base| v_ArrVal_2074) |c_create_sub_list_insert_sub_~head#1.base|) .cse0)) (bvadd (_ bv8 32) |c_create_sub_list_insert_sub_~head#1.offset|))) (forall ((v_ArrVal_2074 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (select (select (store |c_#memory_$Pointer$.offset| |c_create_sub_list_insert_sub_~sub~0#1.base| v_ArrVal_2074) |c_create_sub_list_insert_sub_~head#1.base|) .cse0))) (bvule .cse1 (bvadd (_ bv4 32) .cse1)))) (forall ((v_ArrVal_2075 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_create_sub_list_insert_sub_~head#1.base| (select (select (store |c_#memory_$Pointer$.base| |c_create_sub_list_insert_sub_~sub~0#1.base| v_ArrVal_2075) |c_create_sub_list_insert_sub_~head#1.base|) .cse0))))) is different from false [2022-11-16 16:32:52,204 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 16:32:52,204 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 2 case distinctions, treesize of input 25 treesize of output 31 [2022-11-16 16:32:52,209 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 24 [2022-11-16 16:32:52,216 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 3 [2022-11-16 16:32:52,240 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 16:32:52,241 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 2 case distinctions, treesize of input 29 treesize of output 35 [2022-11-16 16:32:52,244 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 16:32:52,247 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 [2022-11-16 16:32:52,283 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 16:32:52,283 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 2 case distinctions, treesize of input 49 treesize of output 42 [2022-11-16 16:32:52,287 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 16:32:52,290 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 28 treesize of output 10 [2022-11-16 16:32:52,568 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 16:32:52,569 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 38 treesize of output 62 [2022-11-16 16:32:52,720 INFO L321 Elim1Store]: treesize reduction 7, result has 30.0 percent of original size [2022-11-16 16:32:52,720 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 16 treesize of output 15 [2022-11-16 16:32:52,764 INFO L321 Elim1Store]: treesize reduction 7, result has 30.0 percent of original size [2022-11-16 16:32:52,765 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 16 treesize of output 15 [2022-11-16 16:32:52,799 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 9 refuted. 1 times theorem prover too weak. 0 trivial. 2 not checked. [2022-11-16 16:32:52,799 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1741968672] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 16:32:52,799 INFO L184 FreeRefinementEngine]: Found 0 perfect and 5 imperfect interpolant sequences. [2022-11-16 16:32:52,800 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 18, 18, 17, 18] total 47 [2022-11-16 16:32:52,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814381124] [2022-11-16 16:32:52,800 INFO L85 oduleStraightlineAll]: Using 5 imperfect interpolants to construct interpolant automaton [2022-11-16 16:32:52,801 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-11-16 16:32:52,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-16 16:32:52,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-11-16 16:32:52,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=183, Invalid=2754, Unknown=45, NotChecked=324, Total=3306 [2022-11-16 16:32:52,803 INFO L87 Difference]: Start difference. First operand 171 states and 187 transitions. Second operand has 48 states, 42 states have (on average 1.9761904761904763) internal successors, (83), 39 states have internal predecessors, (83), 10 states have call successors, (11), 8 states have call predecessors, (11), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-11-16 16:33:00,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 16:33:00,906 INFO L93 Difference]: Finished difference Result 189 states and 208 transitions. [2022-11-16 16:33:00,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-16 16:33:00,906 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 42 states have (on average 1.9761904761904763) internal successors, (83), 39 states have internal predecessors, (83), 10 states have call successors, (11), 8 states have call predecessors, (11), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Word has length 41 [2022-11-16 16:33:00,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 16:33:00,908 INFO L225 Difference]: With dead ends: 189 [2022-11-16 16:33:00,908 INFO L226 Difference]: Without dead ends: 189 [2022-11-16 16:33:00,910 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 157 SyntacticMatches, 4 SemanticMatches, 71 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 1222 ImplicationChecksByTransitivity, 55.1s TimeCoverageRelationStatistics Valid=385, Invalid=4411, Unknown=46, NotChecked=414, Total=5256 [2022-11-16 16:33:00,910 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 123 mSDsluCounter, 705 mSDsCounter, 0 mSdLazyCounter, 1044 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 746 SdHoareTripleChecker+Invalid, 1619 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 1044 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 564 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2022-11-16 16:33:00,911 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [123 Valid, 746 Invalid, 1619 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 1044 Invalid, 0 Unknown, 564 Unchecked, 3.7s Time] [2022-11-16 16:33:00,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2022-11-16 16:33:00,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 171. [2022-11-16 16:33:00,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 124 states have (on average 1.2983870967741935) internal successors, (161), 150 states have internal predecessors, (161), 12 states have call successors, (12), 11 states have call predecessors, (12), 10 states have return successors, (13), 9 states have call predecessors, (13), 12 states have call successors, (13) [2022-11-16 16:33:00,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 186 transitions. [2022-11-16 16:33:00,919 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 186 transitions. Word has length 41 [2022-11-16 16:33:00,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 16:33:00,920 INFO L495 AbstractCegarLoop]: Abstraction has 171 states and 186 transitions. [2022-11-16 16:33:00,920 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 42 states have (on average 1.9761904761904763) internal successors, (83), 39 states have internal predecessors, (83), 10 states have call successors, (11), 8 states have call predecessors, (11), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-11-16 16:33:00,920 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 186 transitions. [2022-11-16 16:33:00,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-11-16 16:33:00,922 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 16:33:00,922 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 16:33:00,941 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6289e30a-84ce-488a-9a79-4a100fa2c467/bin/utaipan-Xvt2sAort0/mathsat -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)] Forceful destruction successful, exit code 0 [2022-11-16 16:33:01,143 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6289e30a-84ce-488a-9a79-4a100fa2c467/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt (29)] Ended with exit code 0 [2022-11-16 16:33:01,343 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6289e30a-84ce-488a-9a79-4a100fa2c467/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2022-11-16 16:33:01,536 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6289e30a-84ce-488a-9a79-4a100fa2c467/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6289e30a-84ce-488a-9a79-4a100fa2c467/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt,30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6289e30a-84ce-488a-9a79-4a100fa2c467/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 16:33:01,536 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting create_sub_listErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_sub_listErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_sub_listErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_sub_listErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-16 16:33:01,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 16:33:01,537 INFO L85 PathProgramCache]: Analyzing trace with hash 782352299, now seen corresponding path program 1 times [2022-11-16 16:33:01,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-16 16:33:01,537 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1024593777] [2022-11-16 16:33:01,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:33:01,538 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 [2022-11-16 16:33:01,538 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6289e30a-84ce-488a-9a79-4a100fa2c467/bin/utaipan-Xvt2sAort0/mathsat [2022-11-16 16:33:01,539 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6289e30a-84ce-488a-9a79-4a100fa2c467/bin/utaipan-Xvt2sAort0/mathsat -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) [2022-11-16 16:33:01,540 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6289e30a-84ce-488a-9a79-4a100fa2c467/bin/utaipan-Xvt2sAort0/mathsat -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 [2022-11-16 16:33:02,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:33:02,027 INFO L263 TraceCheckSpWp]: Trace formula consists of 348 conjuncts, 29 conjunts are in the unsatisfiable core [2022-11-16 16:33:02,029 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 16:33:02,044 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 [2022-11-16 16:33:02,053 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 [2022-11-16 16:33:02,258 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 [2022-11-16 16:33:02,469 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-16 16:33:02,469 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 [2022-11-16 16:33:02,493 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_2177 (_ BitVec 32)) (|v_create_sub_list_insert_sub_~sub~0#1.base_64| (_ BitVec 32)) (v_ArrVal_2176 (_ BitVec 32)) (|create_sub_list_insert_sub_~sub~0#1.base| (_ BitVec 32))) (and (= (_ bv0 1) (select |c_old(#valid)| |v_create_sub_list_insert_sub_~sub~0#1.base_64|)) (= |c_#length| (store (store |c_old(#length)| |v_create_sub_list_insert_sub_~sub~0#1.base_64| v_ArrVal_2176) |create_sub_list_insert_sub_~sub~0#1.base| v_ArrVal_2177)) (not (= |c_create_sub_list_#in~sub#1.base| |create_sub_list_insert_sub_~sub~0#1.base|)))) is different from true [2022-11-16 16:33:02,602 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-16 16:33:02,603 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 [2022-11-16 16:33:02,609 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 [2022-11-16 16:33:02,716 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:33:02,755 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-16 16:33:02,756 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 15 treesize of output 23 [2022-11-16 16:33:02,785 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-16 16:33:02,786 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 13 treesize of output 13 [2022-11-16 16:33:02,936 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 5 not checked. [2022-11-16 16:33:02,936 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 16:33:03,604 INFO L321 Elim1Store]: treesize reduction 7, result has 30.0 percent of original size [2022-11-16 16:33:03,604 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 15 treesize of output 14 [2022-11-16 16:33:05,680 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse0 (bvadd |c_ULTIMATE.start_insert_top_~top~0#1.offset| (_ bv24 32)))) (and (forall ((|v_create_sub_list_insert_sub_~sub~0#1.base_70| (_ BitVec 32))) (or (not (= (_ bv0 1) (select |c_#valid| |v_create_sub_list_insert_sub_~sub~0#1.base_70|))) (forall ((|v_create_sub_list_insert_sub_~sub~0#1.base_69| (_ BitVec 32))) (or (forall ((v_ArrVal_2182 (_ BitVec 32)) (v_ArrVal_2183 (_ BitVec 32))) (bvule .cse0 (select (store (store |c_#length| |v_create_sub_list_insert_sub_~sub~0#1.base_70| v_ArrVal_2182) |v_create_sub_list_insert_sub_~sub~0#1.base_69| v_ArrVal_2183) |c_ULTIMATE.start_insert_top_~top~0#1.base|))) (= |v_create_sub_list_insert_sub_~sub~0#1.base_69| |c_ULTIMATE.start_insert_top_~top~0#1.base|))))) (or (bvule (bvadd |c_ULTIMATE.start_insert_top_~top~0#1.offset| (_ bv20 32)) .cse0) (forall ((|v_create_sub_list_insert_sub_~sub~0#1.base_70| (_ BitVec 32))) (not (= (_ bv0 1) (select |c_#valid| |v_create_sub_list_insert_sub_~sub~0#1.base_70|))))))) is different from false [2022-11-16 16:33:05,685 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-16 16:33:05,685 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1024593777] [2022-11-16 16:33:05,686 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1024593777] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 16:33:05,686 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1068238660] [2022-11-16 16:33:05,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:33:05,686 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-16 16:33:05,686 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6289e30a-84ce-488a-9a79-4a100fa2c467/bin/utaipan-Xvt2sAort0/cvc4 [2022-11-16 16:33:05,687 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6289e30a-84ce-488a-9a79-4a100fa2c467/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-16 16:33:05,689 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6289e30a-84ce-488a-9a79-4a100fa2c467/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt (32)] Waiting until timeout for monitored process [2022-11-16 16:33:06,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:33:06,785 INFO L263 TraceCheckSpWp]: Trace formula consists of 348 conjuncts, 44 conjunts are in the unsatisfiable core [2022-11-16 16:33:06,787 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 16:33:06,792 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 [2022-11-16 16:33:06,802 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 [2022-11-16 16:33:07,131 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 [2022-11-16 16:33:07,417 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-16 16:33:07,418 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 [2022-11-16 16:33:07,685 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-16 16:33:07,685 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 [2022-11-16 16:33:07,692 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 [2022-11-16 16:33:08,349 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:33:08,384 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-16 16:33:08,384 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 15 treesize of output 23 [2022-11-16 16:33:08,409 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-16 16:33:08,409 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 13 treesize of output 13 [2022-11-16 16:33:08,441 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 1 proven. 16 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 16:33:08,441 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 16:33:09,546 INFO L321 Elim1Store]: treesize reduction 7, result has 30.0 percent of original size [2022-11-16 16:33:09,546 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 15 treesize of output 14 [2022-11-16 16:33:18,161 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1068238660] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 16:33:18,161 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1692257520] [2022-11-16 16:33:18,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:33:18,162 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 16:33:18,162 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6289e30a-84ce-488a-9a79-4a100fa2c467/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 16:33:18,163 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6289e30a-84ce-488a-9a79-4a100fa2c467/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 16:33:18,165 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6289e30a-84ce-488a-9a79-4a100fa2c467/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2022-11-16 16:33:18,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:33:18,539 INFO L263 TraceCheckSpWp]: Trace formula consists of 348 conjuncts, 38 conjunts are in the unsatisfiable core [2022-11-16 16:33:18,541 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 16:33:18,545 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 [2022-11-16 16:33:18,552 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 [2022-11-16 16:33:18,738 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 [2022-11-16 16:33:18,866 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-16 16:33:18,867 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 [2022-11-16 16:33:19,071 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-16 16:33:19,072 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 [2022-11-16 16:33:19,077 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 [2022-11-16 16:33:19,310 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:33:19,351 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-16 16:33:19,352 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 15 treesize of output 23 [2022-11-16 16:33:19,382 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-16 16:33:19,382 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 13 treesize of output 13 [2022-11-16 16:33:19,412 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 1 proven. 16 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 16:33:19,412 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 16:33:20,317 INFO L321 Elim1Store]: treesize reduction 7, result has 30.0 percent of original size [2022-11-16 16:33:20,318 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 15 treesize of output 14 [2022-11-16 16:33:26,976 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1692257520] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 16:33:26,976 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 16:33:26,976 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 17, 15] total 21 [2022-11-16 16:33:26,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525558970] [2022-11-16 16:33:26,977 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 16:33:26,977 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-16 16:33:26,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-16 16:33:26,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-16 16:33:26,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=581, Unknown=9, NotChecked=98, Total=756 [2022-11-16 16:33:26,978 INFO L87 Difference]: Start difference. First operand 171 states and 186 transitions. Second operand has 22 states, 20 states have (on average 3.3) internal successors, (66), 19 states have internal predecessors, (66), 6 states have call successors, (6), 3 states have call predecessors, (6), 5 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2022-11-16 16:33:33,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 16:33:33,103 INFO L93 Difference]: Finished difference Result 207 states and 233 transitions. [2022-11-16 16:33:33,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-16 16:33:33,104 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 20 states have (on average 3.3) internal successors, (66), 19 states have internal predecessors, (66), 6 states have call successors, (6), 3 states have call predecessors, (6), 5 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) Word has length 45 [2022-11-16 16:33:33,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 16:33:33,105 INFO L225 Difference]: With dead ends: 207 [2022-11-16 16:33:33,106 INFO L226 Difference]: Without dead ends: 207 [2022-11-16 16:33:33,106 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 31 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 191 ImplicationChecksByTransitivity, 23.2s TimeCoverageRelationStatistics Valid=108, Invalid=819, Unknown=11, NotChecked=118, Total=1056 [2022-11-16 16:33:33,107 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 96 mSDsluCounter, 453 mSDsCounter, 0 mSdLazyCounter, 595 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 500 SdHoareTripleChecker+Invalid, 1052 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 595 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 450 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-11-16 16:33:33,107 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 500 Invalid, 1052 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 595 Invalid, 0 Unknown, 450 Unchecked, 1.4s Time] [2022-11-16 16:33:33,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2022-11-16 16:33:33,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 179. [2022-11-16 16:33:33,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 130 states have (on average 1.2923076923076924) internal successors, (168), 155 states have internal predecessors, (168), 13 states have call successors, (13), 12 states have call predecessors, (13), 11 states have return successors, (15), 11 states have call predecessors, (15), 13 states have call successors, (15) [2022-11-16 16:33:33,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 196 transitions. [2022-11-16 16:33:33,114 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 196 transitions. Word has length 45 [2022-11-16 16:33:33,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 16:33:33,114 INFO L495 AbstractCegarLoop]: Abstraction has 179 states and 196 transitions. [2022-11-16 16:33:33,114 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 20 states have (on average 3.3) internal successors, (66), 19 states have internal predecessors, (66), 6 states have call successors, (6), 3 states have call predecessors, (6), 5 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2022-11-16 16:33:33,114 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 196 transitions. [2022-11-16 16:33:33,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-11-16 16:33:33,116 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 16:33:33,116 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 16:33:33,140 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6289e30a-84ce-488a-9a79-4a100fa2c467/bin/utaipan-Xvt2sAort0/mathsat -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 [2022-11-16 16:33:33,336 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6289e30a-84ce-488a-9a79-4a100fa2c467/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt (32)] Forceful destruction successful, exit code 0 [2022-11-16 16:33:33,538 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6289e30a-84ce-488a-9a79-4a100fa2c467/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2022-11-16 16:33:33,731 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6289e30a-84ce-488a-9a79-4a100fa2c467/bin/utaipan-Xvt2sAort0/mathsat -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 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6289e30a-84ce-488a-9a79-4a100fa2c467/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt,33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6289e30a-84ce-488a-9a79-4a100fa2c467/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 16:33:33,732 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting list_add_tailErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_sub_listErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_sub_listErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_sub_listErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-16 16:33:33,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 16:33:33,732 INFO L85 PathProgramCache]: Analyzing trace with hash -1563009013, now seen corresponding path program 1 times [2022-11-16 16:33:33,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-16 16:33:33,732 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [590531191] [2022-11-16 16:33:33,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:33:33,733 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 [2022-11-16 16:33:33,733 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6289e30a-84ce-488a-9a79-4a100fa2c467/bin/utaipan-Xvt2sAort0/mathsat [2022-11-16 16:33:33,733 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6289e30a-84ce-488a-9a79-4a100fa2c467/bin/utaipan-Xvt2sAort0/mathsat -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) [2022-11-16 16:33:33,739 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6289e30a-84ce-488a-9a79-4a100fa2c467/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (34)] Waiting until timeout for monitored process [2022-11-16 16:33:34,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:33:34,226 INFO L263 TraceCheckSpWp]: Trace formula consists of 390 conjuncts, 29 conjunts are in the unsatisfiable core [2022-11-16 16:33:34,229 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 16:33:34,243 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 [2022-11-16 16:33:34,251 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 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-16 16:33:34,288 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:33:34,289 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 [2022-11-16 16:33:34,310 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-16 16:33:34,310 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 [2022-11-16 16:33:34,359 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 [2022-11-16 16:33:34,482 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 [2022-11-16 16:33:34,662 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:33:34,668 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 [2022-11-16 16:33:34,771 WARN L855 $PredicateComparison]: unable to prove that (exists ((|create_sub_list_insert_sub_~sub~0#1.base| (_ BitVec 32))) (= |c_#length| (store |c_old(#length)| |create_sub_list_insert_sub_~sub~0#1.base| (_ bv12 32)))) is different from true [2022-11-16 16:33:34,786 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 [2022-11-16 16:33:34,863 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((|create_sub_list_insert_sub_~sub~0#1.base| (_ BitVec 32))) (= (select |c_#length| |create_sub_list_insert_sub_~sub~0#1.base|) (_ bv12 32))) (exists ((|create_sub_list_insert_sub_~sub~0#1.base| (_ BitVec 32))) (= |c_#length| (store |c_old(#length)| |create_sub_list_insert_sub_~sub~0#1.base| (_ bv12 32))))) is different from true [2022-11-16 16:33:34,919 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-16 16:33:34,919 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 18 [2022-11-16 16:33:35,251 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 2 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 7 not checked. [2022-11-16 16:33:35,251 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 16:33:35,818 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-16 16:33:35,819 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [590531191] [2022-11-16 16:33:35,819 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [590531191] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 16:33:35,819 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1176274881] [2022-11-16 16:33:35,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:33:35,819 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-16 16:33:35,819 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6289e30a-84ce-488a-9a79-4a100fa2c467/bin/utaipan-Xvt2sAort0/cvc4 [2022-11-16 16:33:35,820 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6289e30a-84ce-488a-9a79-4a100fa2c467/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-16 16:33:35,822 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6289e30a-84ce-488a-9a79-4a100fa2c467/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt (35)] Waiting until timeout for monitored process [2022-11-16 16:33:37,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:33:37,967 INFO L263 TraceCheckSpWp]: Trace formula consists of 390 conjuncts, 27 conjunts are in the unsatisfiable core [2022-11-16 16:33:37,969 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 16:33:37,983 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 5 [2022-11-16 16:33:38,072 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:33:38,073 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 [2022-11-16 16:33:38,192 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 [2022-11-16 16:33:38,363 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 [2022-11-16 16:33:38,449 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_2513 (_ BitVec 32)) (|create_sub_list_insert_sub_~sub~0#1.base| (_ BitVec 32))) (and (= (store |c_old(#length)| |create_sub_list_insert_sub_~sub~0#1.base| v_ArrVal_2513) |c_#length|) (bvult |create_sub_list_insert_sub_~sub~0#1.base| |c_#StackHeapBarrier|))) (not (= |c_#StackHeapBarrier| (_ bv0 32))) (not (= (bvadd |c_#StackHeapBarrier| (_ bv1 32)) (_ bv0 32)))) is different from true [2022-11-16 16:33:38,529 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:33:38,530 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 [2022-11-16 16:33:38,563 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 [2022-11-16 16:33:38,630 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_2629 (_ BitVec 32)) (|create_sub_list_insert_sub_~sub~0#1.base| (_ BitVec 32))) (and (= |c_#length| (store |c_old(#length)| |create_sub_list_insert_sub_~sub~0#1.base| v_ArrVal_2629)) (bvult |create_sub_list_insert_sub_~sub~0#1.base| |c_#StackHeapBarrier|))) (not (= |c_#StackHeapBarrier| (_ bv0 32))) (not (= (bvadd |c_#StackHeapBarrier| (_ bv1 32)) (_ bv0 32)))) is different from true [2022-11-16 16:33:38,672 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 [2022-11-16 16:33:38,827 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:33:38,828 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 [2022-11-16 16:33:39,048 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 14 trivial. 7 not checked. [2022-11-16 16:33:39,048 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 16:33:41,405 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1176274881] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 16:33:41,405 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1284367087] [2022-11-16 16:33:41,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:33:41,405 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 16:33:41,405 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6289e30a-84ce-488a-9a79-4a100fa2c467/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 16:33:41,407 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6289e30a-84ce-488a-9a79-4a100fa2c467/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 16:33:41,409 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6289e30a-84ce-488a-9a79-4a100fa2c467/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2022-11-16 16:33:41,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:33:41,752 INFO L263 TraceCheckSpWp]: Trace formula consists of 390 conjuncts, 38 conjunts are in the unsatisfiable core [2022-11-16 16:33:41,755 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 16:33:41,768 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 [2022-11-16 16:33:41,776 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 [2022-11-16 16:33:41,915 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-16 16:33:41,915 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 18 [2022-11-16 16:33:41,962 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-16 16:33:41,962 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 [2022-11-16 16:33:42,418 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 [2022-11-16 16:33:42,434 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_2747 (_ BitVec 32)) (|create_sub_list_insert_sub_~sub~0#1.base| (_ BitVec 32))) (and (= (store |c_old(#length)| |create_sub_list_insert_sub_~sub~0#1.base| v_ArrVal_2747) |c_#length|) (= (_ bv0 1) (select |c_old(#valid)| |create_sub_list_insert_sub_~sub~0#1.base|)))) is different from true [2022-11-16 16:33:42,486 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:33:42,487 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 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-16 16:33:42,532 INFO L321 Elim1Store]: treesize reduction 12, result has 42.9 percent of original size [2022-11-16 16:33:42,532 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 20 treesize of output 22 [2022-11-16 16:33:42,642 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 [2022-11-16 16:33:42,744 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-16 16:33:42,745 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 18 [2022-11-16 16:33:43,195 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 14 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 7 not checked. [2022-11-16 16:33:43,195 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 16:33:43,498 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1284367087] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 16:33:43,498 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 16:33:43,498 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11, 15] total 31 [2022-11-16 16:33:43,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543098985] [2022-11-16 16:33:43,498 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 16:33:43,499 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-11-16 16:33:43,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-16 16:33:43,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-11-16 16:33:43,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=884, Unknown=7, NotChecked=320, Total=1332 [2022-11-16 16:33:43,499 INFO L87 Difference]: Start difference. First operand 179 states and 196 transitions. Second operand has 32 states, 27 states have (on average 3.074074074074074) internal successors, (83), 24 states have internal predecessors, (83), 11 states have call successors, (13), 10 states have call predecessors, (13), 8 states have return successors, (11), 10 states have call predecessors, (11), 9 states have call successors, (11) [2022-11-16 16:33:44,204 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_2513 (_ BitVec 32)) (|create_sub_list_insert_sub_~sub~0#1.base| (_ BitVec 32))) (and (= (store |c_old(#length)| |create_sub_list_insert_sub_~sub~0#1.base| v_ArrVal_2513) |c_#length|) (bvult |create_sub_list_insert_sub_~sub~0#1.base| |c_#StackHeapBarrier|))) (exists ((v_ArrVal_2747 (_ BitVec 32)) (|create_sub_list_insert_sub_~sub~0#1.base| (_ BitVec 32))) (and (= (store |c_old(#length)| |create_sub_list_insert_sub_~sub~0#1.base| v_ArrVal_2747) |c_#length|) (= (_ bv0 1) (select |c_old(#valid)| |create_sub_list_insert_sub_~sub~0#1.base|)))) (exists ((v_ArrVal_2629 (_ BitVec 32)) (|create_sub_list_insert_sub_~sub~0#1.base| (_ BitVec 32))) (and (= |c_#length| (store |c_old(#length)| |create_sub_list_insert_sub_~sub~0#1.base| v_ArrVal_2629)) (bvult |create_sub_list_insert_sub_~sub~0#1.base| |c_#StackHeapBarrier|))) (not (= |c_#StackHeapBarrier| (_ bv0 32))) (exists ((|create_sub_list_insert_sub_~sub~0#1.base| (_ BitVec 32))) (= (select |c_#length| |create_sub_list_insert_sub_~sub~0#1.base|) (_ bv12 32))) (exists ((|create_sub_list_insert_sub_~sub~0#1.base| (_ BitVec 32))) (= |c_#length| (store |c_old(#length)| |create_sub_list_insert_sub_~sub~0#1.base| (_ bv12 32)))) (not (= (bvadd |c_#StackHeapBarrier| (_ bv1 32)) (_ bv0 32)))) is different from true [2022-11-16 16:33:45,085 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_2747 (_ BitVec 32)) (|create_sub_list_insert_sub_~sub~0#1.base| (_ BitVec 32))) (and (= (store |c_old(#length)| |create_sub_list_insert_sub_~sub~0#1.base| v_ArrVal_2747) |c_#length|) (= (_ bv0 1) (select |c_old(#valid)| |create_sub_list_insert_sub_~sub~0#1.base|)))) (exists ((|create_sub_list_insert_sub_~sub~0#1.base| (_ BitVec 32))) (= (select |c_#length| |create_sub_list_insert_sub_~sub~0#1.base|) (_ bv12 32))) (exists ((|create_sub_list_insert_sub_~sub~0#1.base| (_ BitVec 32))) (= |c_#length| (store |c_old(#length)| |create_sub_list_insert_sub_~sub~0#1.base| (_ bv12 32))))) is different from true [2022-11-16 16:33:45,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 16:33:45,602 INFO L93 Difference]: Finished difference Result 256 states and 289 transitions. [2022-11-16 16:33:45,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-16 16:33:45,603 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 27 states have (on average 3.074074074074074) internal successors, (83), 24 states have internal predecessors, (83), 11 states have call successors, (13), 10 states have call predecessors, (13), 8 states have return successors, (11), 10 states have call predecessors, (11), 9 states have call successors, (11) Word has length 51 [2022-11-16 16:33:45,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 16:33:45,604 INFO L225 Difference]: With dead ends: 256 [2022-11-16 16:33:45,605 INFO L226 Difference]: Without dead ends: 256 [2022-11-16 16:33:45,605 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 126 SyntacticMatches, 5 SemanticMatches, 47 ConstructedPredicates, 7 IntricatePredicates, 0 DeprecatedPredicates, 492 ImplicationChecksByTransitivity, 5.9s TimeCoverageRelationStatistics Valid=204, Invalid=1535, Unknown=11, NotChecked=602, Total=2352 [2022-11-16 16:33:45,606 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 98 mSDsluCounter, 373 mSDsCounter, 0 mSdLazyCounter, 390 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 423 SdHoareTripleChecker+Invalid, 1516 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 390 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1104 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-16 16:33:45,606 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 423 Invalid, 1516 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 390 Invalid, 0 Unknown, 1104 Unchecked, 0.9s Time] [2022-11-16 16:33:45,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2022-11-16 16:33:45,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 243. [2022-11-16 16:33:45,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 243 states, 182 states have (on average 1.2637362637362637) internal successors, (230), 209 states have internal predecessors, (230), 18 states have call successors, (18), 17 states have call predecessors, (18), 18 states have return successors, (26), 16 states have call predecessors, (26), 18 states have call successors, (26) [2022-11-16 16:33:45,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 274 transitions. [2022-11-16 16:33:45,616 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 274 transitions. Word has length 51 [2022-11-16 16:33:45,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 16:33:45,617 INFO L495 AbstractCegarLoop]: Abstraction has 243 states and 274 transitions. [2022-11-16 16:33:45,617 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 27 states have (on average 3.074074074074074) internal successors, (83), 24 states have internal predecessors, (83), 11 states have call successors, (13), 10 states have call predecessors, (13), 8 states have return successors, (11), 10 states have call predecessors, (11), 9 states have call successors, (11) [2022-11-16 16:33:45,618 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 274 transitions. [2022-11-16 16:33:45,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-11-16 16:33:45,619 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 16:33:45,619 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 16:33:45,626 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6289e30a-84ce-488a-9a79-4a100fa2c467/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0 [2022-11-16 16:33:45,830 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6289e30a-84ce-488a-9a79-4a100fa2c467/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (34)] Forceful destruction successful, exit code 0 [2022-11-16 16:33:46,027 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6289e30a-84ce-488a-9a79-4a100fa2c467/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt (35)] Forceful destruction successful, exit code 0 [2022-11-16 16:33:46,219 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6289e30a-84ce-488a-9a79-4a100fa2c467/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6289e30a-84ce-488a-9a79-4a100fa2c467/bin/utaipan-Xvt2sAort0/mathsat -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 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6289e30a-84ce-488a-9a79-4a100fa2c467/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt [2022-11-16 16:33:46,220 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting list_add_tailErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_sub_listErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_sub_listErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_sub_listErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-16 16:33:46,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 16:33:46,220 INFO L85 PathProgramCache]: Analyzing trace with hash -1563009014, now seen corresponding path program 1 times [2022-11-16 16:33:46,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-16 16:33:46,220 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1701087288] [2022-11-16 16:33:46,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:33:46,220 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 [2022-11-16 16:33:46,221 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6289e30a-84ce-488a-9a79-4a100fa2c467/bin/utaipan-Xvt2sAort0/mathsat [2022-11-16 16:33:46,229 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6289e30a-84ce-488a-9a79-4a100fa2c467/bin/utaipan-Xvt2sAort0/mathsat -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) [2022-11-16 16:33:46,230 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6289e30a-84ce-488a-9a79-4a100fa2c467/bin/utaipan-Xvt2sAort0/mathsat -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 [2022-11-16 16:33:46,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:33:46,751 INFO L263 TraceCheckSpWp]: Trace formula consists of 390 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-16 16:33:46,753 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 16:33:46,762 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 [2022-11-16 16:33:46,820 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-16 16:33:46,821 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 [2022-11-16 16:33:46,858 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 7 treesize of output 5 [2022-11-16 16:33:46,963 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 [2022-11-16 16:33:47,062 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_2862 (_ BitVec 1)) (|create_sub_list_insert_sub_~sub~0#1.base| (_ BitVec 32))) (and (= (store |c_old(#valid)| |create_sub_list_insert_sub_~sub~0#1.base| v_ArrVal_2862) |c_#valid|) (bvult |create_sub_list_insert_sub_~sub~0#1.base| |c_#StackHeapBarrier|))) (not (= |c_#StackHeapBarrier| (_ bv0 32))) (not (= (bvadd |c_#StackHeapBarrier| (_ bv1 32)) (_ bv0 32)))) is different from true [2022-11-16 16:33:47,132 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:33:47,133 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 14 treesize of output 20 [2022-11-16 16:33:47,226 WARN L855 $PredicateComparison]: unable to prove that (exists ((|create_sub_list_insert_sub_~sub~0#1.base| (_ BitVec 32))) (= |c_#valid| (store |c_old(#valid)| |create_sub_list_insert_sub_~sub~0#1.base| (_ bv1 1)))) is different from true [2022-11-16 16:33:47,241 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 [2022-11-16 16:33:47,384 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-16 16:33:47,384 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 [2022-11-16 16:33:47,537 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 2 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 7 not checked. [2022-11-16 16:33:47,538 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 16:33:47,855 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-16 16:33:47,855 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1701087288] [2022-11-16 16:33:47,855 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1701087288] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 16:33:47,855 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1554930922] [2022-11-16 16:33:47,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:33:47,855 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-16 16:33:47,856 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6289e30a-84ce-488a-9a79-4a100fa2c467/bin/utaipan-Xvt2sAort0/cvc4 [2022-11-16 16:33:47,856 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6289e30a-84ce-488a-9a79-4a100fa2c467/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-16 16:33:47,858 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6289e30a-84ce-488a-9a79-4a100fa2c467/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt (38)] Waiting until timeout for monitored process [2022-11-16 16:33:49,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:33:49,784 INFO L263 TraceCheckSpWp]: Trace formula consists of 390 conjuncts, 21 conjunts are in the unsatisfiable core [2022-11-16 16:33:49,787 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 16:33:49,865 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-16 16:33:49,865 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 [2022-11-16 16:33:49,952 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:33:49,958 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:33:49,987 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-16 16:33:49,987 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 1 case distinctions, treesize of input 21 treesize of output 36 [2022-11-16 16:33:50,120 INFO L321 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2022-11-16 16:33:50,120 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 24 treesize of output 20 [2022-11-16 16:33:50,263 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 [2022-11-16 16:33:50,397 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:33:50,403 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:33:50,434 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-16 16:33:50,435 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 1 case distinctions, treesize of input 25 treesize of output 40 [2022-11-16 16:33:50,572 INFO L321 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2022-11-16 16:33:50,572 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 24 treesize of output 20 [2022-11-16 16:33:50,678 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 [2022-11-16 16:33:50,818 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:33:50,826 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:33:50,854 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-16 16:33:50,855 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 1 case distinctions, treesize of input 25 treesize of output 40 [2022-11-16 16:33:51,319 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-11-16 16:33:51,319 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 16:33:51,479 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1554930922] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 16:33:51,479 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1153211120] [2022-11-16 16:33:51,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:33:51,480 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 16:33:51,480 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6289e30a-84ce-488a-9a79-4a100fa2c467/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 16:33:51,483 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6289e30a-84ce-488a-9a79-4a100fa2c467/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 16:33:51,507 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6289e30a-84ce-488a-9a79-4a100fa2c467/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2022-11-16 16:33:51,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:33:51,854 INFO L263 TraceCheckSpWp]: Trace formula consists of 390 conjuncts, 35 conjunts are in the unsatisfiable core [2022-11-16 16:33:51,857 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 16:33:51,875 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 [2022-11-16 16:33:51,972 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-16 16:33:51,972 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 [2022-11-16 16:33:52,263 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 0 case distinctions, treesize of input 12 treesize of output 11 [2022-11-16 16:33:52,538 INFO L321 Elim1Store]: treesize reduction 51, result has 23.9 percent of original size [2022-11-16 16:33:52,538 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 26 treesize of output 36 [2022-11-16 16:33:52,688 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 0 case distinctions, treesize of input 12 treesize of output 11 [2022-11-16 16:33:52,707 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_3094 (_ BitVec 1)) (|create_sub_list_insert_sub_~sub~0#1.base| (_ BitVec 32))) (and (= |c_#valid| (store |c_old(#valid)| |create_sub_list_insert_sub_~sub~0#1.base| v_ArrVal_3094)) (= (_ bv0 1) (select |c_old(#valid)| |create_sub_list_insert_sub_~sub~0#1.base|)))) is different from true [2022-11-16 16:33:52,802 INFO L321 Elim1Store]: treesize reduction 44, result has 34.3 percent of original size [2022-11-16 16:33:52,803 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 26 treesize of output 43 [2022-11-16 16:33:53,163 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 9 trivial. 4 not checked. [2022-11-16 16:33:53,163 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 16:33:53,549 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1153211120] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 16:33:53,549 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 16:33:53,549 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 10, 13] total 32 [2022-11-16 16:33:53,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143856872] [2022-11-16 16:33:53,549 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 16:33:53,550 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-11-16 16:33:53,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-16 16:33:53,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-11-16 16:33:53,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=987, Unknown=14, NotChecked=198, Total=1332 [2022-11-16 16:33:53,551 INFO L87 Difference]: Start difference. First operand 243 states and 274 transitions. Second operand has 33 states, 29 states have (on average 2.9655172413793105) internal successors, (86), 27 states have internal predecessors, (86), 9 states have call successors, (12), 9 states have call predecessors, (12), 8 states have return successors, (10), 9 states have call predecessors, (10), 7 states have call successors, (10) [2022-11-16 16:33:59,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 16:33:59,745 INFO L93 Difference]: Finished difference Result 259 states and 291 transitions. [2022-11-16 16:33:59,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-11-16 16:33:59,746 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 29 states have (on average 2.9655172413793105) internal successors, (86), 27 states have internal predecessors, (86), 9 states have call successors, (12), 9 states have call predecessors, (12), 8 states have return successors, (10), 9 states have call predecessors, (10), 7 states have call successors, (10) Word has length 51 [2022-11-16 16:33:59,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 16:33:59,747 INFO L225 Difference]: With dead ends: 259 [2022-11-16 16:33:59,748 INFO L226 Difference]: Without dead ends: 259 [2022-11-16 16:33:59,748 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 139 SyntacticMatches, 11 SemanticMatches, 53 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 867 ImplicationChecksByTransitivity, 7.6s TimeCoverageRelationStatistics Valid=309, Invalid=2336, Unknown=19, NotChecked=306, Total=2970 [2022-11-16 16:33:59,749 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 144 mSDsluCounter, 585 mSDsCounter, 0 mSdLazyCounter, 360 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 635 SdHoareTripleChecker+Invalid, 1116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 360 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 738 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-16 16:33:59,749 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 635 Invalid, 1116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 360 Invalid, 0 Unknown, 738 Unchecked, 0.8s Time] [2022-11-16 16:33:59,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2022-11-16 16:33:59,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 243. [2022-11-16 16:33:59,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 243 states, 182 states have (on average 1.2582417582417582) internal successors, (229), 209 states have internal predecessors, (229), 18 states have call successors, (18), 17 states have call predecessors, (18), 18 states have return successors, (26), 16 states have call predecessors, (26), 18 states have call successors, (26) [2022-11-16 16:33:59,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 273 transitions. [2022-11-16 16:33:59,760 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 273 transitions. Word has length 51 [2022-11-16 16:33:59,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 16:33:59,761 INFO L495 AbstractCegarLoop]: Abstraction has 243 states and 273 transitions. [2022-11-16 16:33:59,761 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 29 states have (on average 2.9655172413793105) internal successors, (86), 27 states have internal predecessors, (86), 9 states have call successors, (12), 9 states have call predecessors, (12), 8 states have return successors, (10), 9 states have call predecessors, (10), 7 states have call successors, (10) [2022-11-16 16:33:59,761 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 273 transitions. [2022-11-16 16:33:59,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-11-16 16:33:59,762 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 16:33:59,762 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 16:33:59,778 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6289e30a-84ce-488a-9a79-4a100fa2c467/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt (38)] Forceful destruction successful, exit code 0 [2022-11-16 16:33:59,982 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6289e30a-84ce-488a-9a79-4a100fa2c467/bin/utaipan-Xvt2sAort0/mathsat -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 [2022-11-16 16:34:00,178 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6289e30a-84ce-488a-9a79-4a100fa2c467/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Forceful destruction successful, exit code 0 [2022-11-16 16:34:00,372 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6289e30a-84ce-488a-9a79-4a100fa2c467/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt,37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6289e30a-84ce-488a-9a79-4a100fa2c467/bin/utaipan-Xvt2sAort0/mathsat -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 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6289e30a-84ce-488a-9a79-4a100fa2c467/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 16:34:00,373 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting list_add_tailErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_sub_listErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_sub_listErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_sub_listErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-16 16:34:00,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 16:34:00,373 INFO L85 PathProgramCache]: Analyzing trace with hash -189202688, now seen corresponding path program 1 times [2022-11-16 16:34:00,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-16 16:34:00,373 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1963172359] [2022-11-16 16:34:00,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:34:00,373 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 [2022-11-16 16:34:00,374 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6289e30a-84ce-488a-9a79-4a100fa2c467/bin/utaipan-Xvt2sAort0/mathsat [2022-11-16 16:34:00,374 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6289e30a-84ce-488a-9a79-4a100fa2c467/bin/utaipan-Xvt2sAort0/mathsat -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) [2022-11-16 16:34:00,375 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6289e30a-84ce-488a-9a79-4a100fa2c467/bin/utaipan-Xvt2sAort0/mathsat -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 [2022-11-16 16:34:00,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:34:00,955 INFO L263 TraceCheckSpWp]: Trace formula consists of 423 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-16 16:34:00,957 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 16:34:01,270 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:34:01,271 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 14 treesize of output 16 [2022-11-16 16:34:01,288 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-16 16:34:01,288 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 [2022-11-16 16:34:01,444 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 26 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 16:34:01,444 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 16:34:04,162 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 16:34:04,162 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 52 treesize of output 56 [2022-11-16 16:34:04,225 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 16:34:04,226 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 50 treesize of output 74 [2022-11-16 16:34:05,102 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 16:34:05,102 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 30 treesize of output 34 [2022-11-16 16:34:05,139 INFO L321 Elim1Store]: treesize reduction 7, result has 30.0 percent of original size [2022-11-16 16:34:05,139 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 15 treesize of output 14 [2022-11-16 16:34:05,917 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 25 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 16:34:05,918 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-16 16:34:05,918 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1963172359] [2022-11-16 16:34:05,918 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1963172359] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 16:34:05,918 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1647724859] [2022-11-16 16:34:05,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:34:05,919 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-16 16:34:05,919 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6289e30a-84ce-488a-9a79-4a100fa2c467/bin/utaipan-Xvt2sAort0/cvc4 [2022-11-16 16:34:05,920 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6289e30a-84ce-488a-9a79-4a100fa2c467/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-16 16:34:05,925 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6289e30a-84ce-488a-9a79-4a100fa2c467/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt (41)] Waiting until timeout for monitored process [2022-11-16 16:34:06,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:34:06,998 INFO L263 TraceCheckSpWp]: Trace formula consists of 423 conjuncts, 48 conjunts are in the unsatisfiable core [2022-11-16 16:34:07,002 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 16:34:07,008 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-16 16:34:07,016 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 [2022-11-16 16:34:07,471 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 [2022-11-16 16:34:07,986 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:34:07,986 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 [2022-11-16 16:34:08,001 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-16 16:34:08,001 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 [2022-11-16 16:34:08,247 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:34:08,247 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 [2022-11-16 16:34:08,265 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-16 16:34:08,266 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 [2022-11-16 16:34:09,040 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:34:09,041 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 [2022-11-16 16:34:09,053 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-16 16:34:09,053 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 [2022-11-16 16:34:09,372 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 12 proven. 18 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 16:34:09,373 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 16:34:09,755 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 16:34:09,755 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 41 treesize of output 65 [2022-11-16 16:34:10,331 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1647724859] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 16:34:10,332 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1754699023] [2022-11-16 16:34:10,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:34:10,332 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 16:34:10,332 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6289e30a-84ce-488a-9a79-4a100fa2c467/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 16:34:10,333 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6289e30a-84ce-488a-9a79-4a100fa2c467/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 16:34:10,335 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6289e30a-84ce-488a-9a79-4a100fa2c467/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2022-11-16 16:34:10,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:34:10,711 INFO L263 TraceCheckSpWp]: Trace formula consists of 423 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-16 16:34:10,713 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 16:34:10,921 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:34:10,922 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 14 treesize of output 16 [2022-11-16 16:34:10,937 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-16 16:34:10,937 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 [2022-11-16 16:34:11,008 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 26 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 16:34:11,008 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 16:34:11,457 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 16:34:11,457 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 52 treesize of output 56 [2022-11-16 16:34:11,511 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 16:34:11,511 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 50 treesize of output 74 [2022-11-16 16:34:12,340 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 16:34:12,341 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 30 treesize of output 34 [2022-11-16 16:34:12,379 INFO L321 Elim1Store]: treesize reduction 7, result has 30.0 percent of original size [2022-11-16 16:34:12,379 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 15 treesize of output 14 [2022-11-16 16:34:12,617 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 25 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 16:34:12,617 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1754699023] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 16:34:12,617 INFO L184 FreeRefinementEngine]: Found 0 perfect and 5 imperfect interpolant sequences. [2022-11-16 16:34:12,617 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 19, 11, 11] total 39 [2022-11-16 16:34:12,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445168245] [2022-11-16 16:34:12,617 INFO L85 oduleStraightlineAll]: Using 5 imperfect interpolants to construct interpolant automaton [2022-11-16 16:34:12,618 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-11-16 16:34:12,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-16 16:34:12,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-11-16 16:34:12,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=1506, Unknown=0, NotChecked=0, Total=1640 [2022-11-16 16:34:12,619 INFO L87 Difference]: Start difference. First operand 243 states and 273 transitions. Second operand has 40 states, 39 states have (on average 2.8205128205128207) internal successors, (110), 32 states have internal predecessors, (110), 11 states have call successors, (14), 9 states have call predecessors, (14), 6 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-11-16 16:34:27,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 16:34:27,595 INFO L93 Difference]: Finished difference Result 312 states and 346 transitions. [2022-11-16 16:34:27,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-11-16 16:34:27,596 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 39 states have (on average 2.8205128205128207) internal successors, (110), 32 states have internal predecessors, (110), 11 states have call successors, (14), 9 states have call predecessors, (14), 6 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Word has length 52 [2022-11-16 16:34:27,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 16:34:27,597 INFO L225 Difference]: With dead ends: 312 [2022-11-16 16:34:27,597 INFO L226 Difference]: Without dead ends: 312 [2022-11-16 16:34:27,599 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 311 GetRequests, 236 SyntacticMatches, 6 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1302 ImplicationChecksByTransitivity, 17.2s TimeCoverageRelationStatistics Valid=507, Invalid=4462, Unknown=1, NotChecked=0, Total=4970 [2022-11-16 16:34:27,599 INFO L413 NwaCegarLoop]: 86 mSDtfsCounter, 287 mSDsluCounter, 1356 mSDsCounter, 0 mSdLazyCounter, 1399 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 294 SdHoareTripleChecker+Valid, 1442 SdHoareTripleChecker+Invalid, 2080 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 1399 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 651 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2022-11-16 16:34:27,600 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [294 Valid, 1442 Invalid, 2080 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 1399 Invalid, 0 Unknown, 651 Unchecked, 4.3s Time] [2022-11-16 16:34:27,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312 states. [2022-11-16 16:34:27,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 259. [2022-11-16 16:34:27,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 259 states, 196 states have (on average 1.239795918367347) internal successors, (243), 223 states have internal predecessors, (243), 19 states have call successors, (19), 18 states have call predecessors, (19), 20 states have return successors, (25), 17 states have call predecessors, (25), 19 states have call successors, (25) [2022-11-16 16:34:27,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 287 transitions. [2022-11-16 16:34:27,615 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 287 transitions. Word has length 52 [2022-11-16 16:34:27,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 16:34:27,615 INFO L495 AbstractCegarLoop]: Abstraction has 259 states and 287 transitions. [2022-11-16 16:34:27,616 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 39 states have (on average 2.8205128205128207) internal successors, (110), 32 states have internal predecessors, (110), 11 states have call successors, (14), 9 states have call predecessors, (14), 6 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-11-16 16:34:27,616 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 287 transitions. [2022-11-16 16:34:27,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-11-16 16:34:27,616 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 16:34:27,617 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 16:34:27,629 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6289e30a-84ce-488a-9a79-4a100fa2c467/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Ended with exit code 0 [2022-11-16 16:34:27,831 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6289e30a-84ce-488a-9a79-4a100fa2c467/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt (41)] Forceful destruction successful, exit code 0 [2022-11-16 16:34:28,035 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6289e30a-84ce-488a-9a79-4a100fa2c467/bin/utaipan-Xvt2sAort0/mathsat -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)] Forceful destruction successful, exit code 0 [2022-11-16 16:34:28,225 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6289e30a-84ce-488a-9a79-4a100fa2c467/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6289e30a-84ce-488a-9a79-4a100fa2c467/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt,40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6289e30a-84ce-488a-9a79-4a100fa2c467/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 16:34:28,225 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting list_add_tailErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_sub_listErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_sub_listErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_sub_listErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-16 16:34:28,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 16:34:28,226 INFO L85 PathProgramCache]: Analyzing trace with hash -1771803766, now seen corresponding path program 2 times [2022-11-16 16:34:28,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-16 16:34:28,226 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [847774721] [2022-11-16 16:34:28,226 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 16:34:28,226 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 [2022-11-16 16:34:28,227 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6289e30a-84ce-488a-9a79-4a100fa2c467/bin/utaipan-Xvt2sAort0/mathsat [2022-11-16 16:34:28,227 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6289e30a-84ce-488a-9a79-4a100fa2c467/bin/utaipan-Xvt2sAort0/mathsat -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) [2022-11-16 16:34:28,234 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6289e30a-84ce-488a-9a79-4a100fa2c467/bin/utaipan-Xvt2sAort0/mathsat -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 [2022-11-16 16:34:28,973 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 16:34:28,973 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 16:34:28,992 INFO L263 TraceCheckSpWp]: Trace formula consists of 438 conjuncts, 60 conjunts are in the unsatisfiable core [2022-11-16 16:34:28,996 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 16:34:29,204 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-16 16:34:29,204 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 [2022-11-16 16:34:29,542 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 [2022-11-16 16:34:29,658 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-16 16:34:29,658 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 16 treesize of output 22 [2022-11-16 16:34:29,672 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 3 [2022-11-16 16:34:29,801 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-16 16:34:29,802 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 20 treesize of output 26 [2022-11-16 16:34:30,780 INFO L321 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2022-11-16 16:34:30,780 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 25 treesize of output 34 [2022-11-16 16:34:31,235 INFO L321 Elim1Store]: treesize reduction 56, result has 35.6 percent of original size [2022-11-16 16:34:31,235 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 30 treesize of output 51 [2022-11-16 16:34:31,259 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 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 [2022-11-16 16:34:31,394 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 34 treesize of output 32 [2022-11-16 16:34:31,758 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 35 treesize of output 19 [2022-11-16 16:34:31,771 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 11 treesize of output 7 [2022-11-16 16:34:31,960 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 12 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 16:34:31,960 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 16:34:34,518 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 24 treesize of output 22 [2022-11-16 16:34:35,651 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 16:34:35,651 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 53 treesize of output 44 [2022-11-16 16:34:35,655 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 16:34:35,718 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 16:34:35,719 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 3 new quantified variables, introduced 3 case distinctions, treesize of input 424 treesize of output 430 [2022-11-16 16:34:35,743 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 482 treesize of output 450 [2022-11-16 16:34:35,821 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 8 treesize of output 4 [2022-11-16 16:34:36,034 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 16:34:36,035 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 284 treesize of output 272 [2022-11-16 16:34:36,336 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 270 treesize of output 254 [2022-11-16 16:34:36,412 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 16:34:36,412 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 449 treesize of output 429 [2022-11-16 16:34:38,702 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 16:34:38,702 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 53 treesize of output 44 [2022-11-16 16:34:38,781 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 16:34:38,781 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 3 new quantified variables, introduced 3 case distinctions, treesize of input 1216 treesize of output 1210 [2022-11-16 16:34:38,812 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 1262 treesize of output 1222 [2022-11-16 16:34:38,835 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 1222 treesize of output 1126 [2022-11-16 16:34:38,875 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 8 treesize of output 4 [2022-11-16 16:34:39,222 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 542 treesize of output 510 [2022-11-16 16:34:40,125 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 16:34:40,126 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 888 treesize of output 860 [2022-11-16 16:34:42,381 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 16:34:42,381 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 664 treesize of output 644 [2022-11-16 16:35:02,113 WARN L233 SmtUtils]: Spent 7.51s on a formula simplification. DAG size of input: 215 DAG size of output: 60 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 16:35:02,116 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-16 16:35:02,116 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [847774721] [2022-11-16 16:35:02,116 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [847774721] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 16:35:02,116 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1463381304] [2022-11-16 16:35:02,116 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 16:35:02,117 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-16 16:35:02,117 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6289e30a-84ce-488a-9a79-4a100fa2c467/bin/utaipan-Xvt2sAort0/cvc4 [2022-11-16 16:35:02,119 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6289e30a-84ce-488a-9a79-4a100fa2c467/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-16 16:35:02,121 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6289e30a-84ce-488a-9a79-4a100fa2c467/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt (44)] Waiting until timeout for monitored process [2022-11-16 16:35:03,023 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6289e30a-84ce-488a-9a79-4a100fa2c467/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt (44)] Forceful destruction successful, exit code 1 [2022-11-16 16:35:03,029 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 16:35:03,029 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1064743543] [2022-11-16 16:35:03,030 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 16:35:03,030 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 16:35:03,030 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6289e30a-84ce-488a-9a79-4a100fa2c467/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 16:35:03,035 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6289e30a-84ce-488a-9a79-4a100fa2c467/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 16:35:03,039 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6289e30a-84ce-488a-9a79-4a100fa2c467/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2022-11-16 16:35:04,453 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 16:35:04,453 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 16:35:04,464 INFO L263 TraceCheckSpWp]: Trace formula consists of 438 conjuncts, 116 conjunts are in the unsatisfiable core [2022-11-16 16:35:04,470 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 16:35:04,479 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 [2022-11-16 16:35:04,486 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 [2022-11-16 16:35:04,799 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 [2022-11-16 16:35:04,809 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 [2022-11-16 16:35:04,932 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 [2022-11-16 16:35:04,941 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:35:04,941 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 [2022-11-16 16:35:04,950 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:35:04,951 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 [2022-11-16 16:35:05,093 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-16 16:35:05,093 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 [2022-11-16 16:35:05,259 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 [2022-11-16 16:35:05,269 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 [2022-11-16 16:35:06,873 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 65 treesize of output 36 [2022-11-16 16:35:06,924 INFO L321 Elim1Store]: treesize reduction 46, result has 19.3 percent of original size [2022-11-16 16:35:06,925 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 83 treesize of output 117 [2022-11-16 16:35:06,932 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 44 treesize of output 26 [2022-11-16 16:35:06,938 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:35:06,939 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 109 treesize of output 77 [2022-11-16 16:35:07,271 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-16 16:35:07,272 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 [2022-11-16 16:35:07,656 INFO L321 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2022-11-16 16:35:07,656 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 102 treesize of output 92 [2022-11-16 16:35:07,896 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 8 treesize of output 4 [2022-11-16 16:35:10,444 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 23 [2022-11-16 16:35:10,494 INFO L321 Elim1Store]: treesize reduction 24, result has 38.5 percent of original size [2022-11-16 16:35:10,494 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 2 new quantified variables, introduced 2 case distinctions, treesize of input 39 treesize of output 46 [2022-11-16 16:35:10,684 INFO L321 Elim1Store]: treesize reduction 56, result has 35.6 percent of original size [2022-11-16 16:35:10,684 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 30 treesize of output 51 [2022-11-16 16:35:10,927 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 34 treesize of output 32 [2022-11-16 16:35:11,403 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 35 treesize of output 19 [2022-11-16 16:35:11,630 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 32 refuted. 6 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 16:35:11,630 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 16:35:12,136 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_3930 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| |c_create_sub_list_insert_sub_~sub~0#1.base| v_ArrVal_3930) |c_create_sub_list_insert_sub_~head#1.base|) (bvadd (_ bv4 32) |c_create_sub_list_insert_sub_~head#1.offset|))) (_ bv1 1)))) is different from false [2022-11-16 16:35:13,259 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1064743543] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 16:35:13,260 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 16:35:13,260 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 32] total 51 [2022-11-16 16:35:13,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738305661] [2022-11-16 16:35:13,260 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 16:35:13,260 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2022-11-16 16:35:13,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-16 16:35:13,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2022-11-16 16:35:13,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=259, Invalid=3865, Unknown=40, NotChecked=126, Total=4290 [2022-11-16 16:35:13,263 INFO L87 Difference]: Start difference. First operand 259 states and 287 transitions. Second operand has 52 states, 49 states have (on average 1.6734693877551021) internal successors, (82), 45 states have internal predecessors, (82), 8 states have call successors, (8), 8 states have call predecessors, (8), 4 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-16 16:35:23,761 WARN L233 SmtUtils]: Spent 6.21s on a formula simplification. DAG size of input: 71 DAG size of output: 53 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 16:35:32,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 16:35:32,462 INFO L93 Difference]: Finished difference Result 260 states and 288 transitions. [2022-11-16 16:35:32,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-11-16 16:35:32,463 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 49 states have (on average 1.6734693877551021) internal successors, (82), 45 states have internal predecessors, (82), 8 states have call successors, (8), 8 states have call predecessors, (8), 4 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) Word has length 51 [2022-11-16 16:35:32,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 16:35:32,464 INFO L225 Difference]: With dead ends: 260 [2022-11-16 16:35:32,464 INFO L226 Difference]: Without dead ends: 260 [2022-11-16 16:35:32,466 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 67 SyntacticMatches, 3 SemanticMatches, 87 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 2596 ImplicationChecksByTransitivity, 37.9s TimeCoverageRelationStatistics Valid=545, Invalid=7032, Unknown=83, NotChecked=172, Total=7832 [2022-11-16 16:35:32,467 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 82 mSDsluCounter, 931 mSDsCounter, 0 mSdLazyCounter, 662 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 978 SdHoareTripleChecker+Invalid, 1525 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 662 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 850 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-11-16 16:35:32,467 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 978 Invalid, 1525 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 662 Invalid, 0 Unknown, 850 Unchecked, 1.8s Time] [2022-11-16 16:35:32,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2022-11-16 16:35:32,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 259. [2022-11-16 16:35:32,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 259 states, 196 states have (on average 1.2346938775510203) internal successors, (242), 223 states have internal predecessors, (242), 19 states have call successors, (19), 18 states have call predecessors, (19), 20 states have return successors, (25), 17 states have call predecessors, (25), 19 states have call successors, (25) [2022-11-16 16:35:32,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 286 transitions. [2022-11-16 16:35:32,475 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 286 transitions. Word has length 51 [2022-11-16 16:35:32,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 16:35:32,476 INFO L495 AbstractCegarLoop]: Abstraction has 259 states and 286 transitions. [2022-11-16 16:35:32,476 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 49 states have (on average 1.6734693877551021) internal successors, (82), 45 states have internal predecessors, (82), 8 states have call successors, (8), 8 states have call predecessors, (8), 4 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-16 16:35:32,476 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 286 transitions. [2022-11-16 16:35:32,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-11-16 16:35:32,477 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 16:35:32,477 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 16:35:32,498 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6289e30a-84ce-488a-9a79-4a100fa2c467/bin/utaipan-Xvt2sAort0/mathsat -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 [2022-11-16 16:35:32,702 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6289e30a-84ce-488a-9a79-4a100fa2c467/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Forceful destruction successful, exit code 0 [2022-11-16 16:35:32,893 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6289e30a-84ce-488a-9a79-4a100fa2c467/bin/utaipan-Xvt2sAort0/mathsat -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 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6289e30a-84ce-488a-9a79-4a100fa2c467/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 16:35:32,894 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting list_add_tailErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_sub_listErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_sub_listErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_sub_listErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-16 16:35:32,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 16:35:32,894 INFO L85 PathProgramCache]: Analyzing trace with hash -1771803765, now seen corresponding path program 2 times [2022-11-16 16:35:32,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-16 16:35:32,895 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1153064130] [2022-11-16 16:35:32,895 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 16:35:32,895 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 [2022-11-16 16:35:32,895 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6289e30a-84ce-488a-9a79-4a100fa2c467/bin/utaipan-Xvt2sAort0/mathsat [2022-11-16 16:35:32,896 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6289e30a-84ce-488a-9a79-4a100fa2c467/bin/utaipan-Xvt2sAort0/mathsat -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) [2022-11-16 16:35:32,897 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6289e30a-84ce-488a-9a79-4a100fa2c467/bin/utaipan-Xvt2sAort0/mathsat -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)] Waiting until timeout for monitored process [2022-11-16 16:35:33,703 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 16:35:33,703 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 16:35:33,724 INFO L263 TraceCheckSpWp]: Trace formula consists of 438 conjuncts, 128 conjunts are in the unsatisfiable core [2022-11-16 16:35:33,730 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 16:35:33,735 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 [2022-11-16 16:35:33,742 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 [2022-11-16 16:35:33,834 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 [2022-11-16 16:35:33,889 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:35:33,889 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 [2022-11-16 16:35:33,942 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-16 16:35:33,942 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 [2022-11-16 16:35:33,970 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 [2022-11-16 16:35:34,135 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:35:34,135 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 [2022-11-16 16:35:34,156 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 [2022-11-16 16:35:34,612 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 13 treesize of output 9 [2022-11-16 16:35:34,783 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-16 16:35:34,783 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 16 treesize of output 22 [2022-11-16 16:35:34,795 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 3 [2022-11-16 16:35:34,986 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-16 16:35:34,986 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 20 treesize of output 26 [2022-11-16 16:35:36,098 INFO L321 Elim1Store]: treesize reduction 27, result has 48.1 percent of original size [2022-11-16 16:35:36,098 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 31 treesize of output 46 [2022-11-16 16:35:36,383 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 9 treesize of output 3 [2022-11-16 16:35:36,613 INFO L321 Elim1Store]: treesize reduction 46, result has 40.3 percent of original size [2022-11-16 16:35:36,613 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 3 case distinctions, treesize of input 23 treesize of output 42 [2022-11-16 16:35:36,719 INFO L321 Elim1Store]: treesize reduction 62, result has 36.1 percent of original size [2022-11-16 16:35:36,719 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 32 treesize of output 55 [2022-11-16 16:35:37,041 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:35:37,041 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 41 treesize of output 39 [2022-11-16 16:35:37,081 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 29 treesize of output 17 [2022-11-16 16:35:37,937 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 [2022-11-16 16:35:38,209 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-16 16:35:38,209 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 16 treesize of output 22 [2022-11-16 16:35:38,220 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 3 [2022-11-16 16:35:38,537 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-16 16:35:38,537 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 20 treesize of output 26 [2022-11-16 16:35:38,837 INFO L321 Elim1Store]: treesize reduction 17, result has 46.9 percent of original size [2022-11-16 16:35:38,837 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 26 treesize of output 38 [2022-11-16 16:35:38,847 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 3 [2022-11-16 16:35:39,259 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 0 case distinctions, treesize of input 82 treesize of output 51 [2022-11-16 16:35:39,267 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:35:39,303 INFO L321 Elim1Store]: treesize reduction 28, result has 28.2 percent of original size [2022-11-16 16:35:39,303 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 2 new quantified variables, introduced 2 case distinctions, treesize of input 72 treesize of output 71 [2022-11-16 16:35:39,785 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:35:39,789 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:35:39,794 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:35:39,796 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:35:39,801 INFO L321 Elim1Store]: treesize reduction 52, result has 1.9 percent of original size [2022-11-16 16:35:39,801 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 31 treesize of output 42 [2022-11-16 16:35:39,880 INFO L321 Elim1Store]: treesize reduction 86, result has 19.6 percent of original size [2022-11-16 16:35:39,880 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 38 treesize of output 44 [2022-11-16 16:35:40,314 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:35:40,315 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-16 16:35:40,327 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:35:40,328 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 24 treesize of output 24 [2022-11-16 16:35:41,145 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 25 treesize of output 13 [2022-11-16 16:35:41,193 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 [2022-11-16 16:35:41,842 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 3 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 16:35:41,842 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 16:35:45,605 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 16:35:45,605 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 71 treesize of output 60 [2022-11-16 16:35:45,660 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 16:35:45,660 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 790 treesize of output 747 [2022-11-16 16:35:45,704 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 365 treesize of output 333 [2022-11-16 16:35:45,717 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 698 treesize of output 570 [2022-11-16 16:35:45,731 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 570 treesize of output 506 [2022-11-16 16:35:47,055 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 16:35:47,056 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 74 treesize of output 75 [2022-11-16 16:35:47,061 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 16:35:47,111 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 16:35:47,111 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 482 treesize of output 475 [2022-11-16 16:35:47,128 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 458 treesize of output 442 [2022-11-16 16:35:47,148 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 225 treesize of output 217 [2022-11-16 16:37:10,465 WARN L233 SmtUtils]: Spent 50.46s on a formula simplification. DAG size of input: 137 DAG size of output: 72 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 16:37:10,466 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-16 16:37:10,466 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1153064130] [2022-11-16 16:37:10,466 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1153064130] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 16:37:10,466 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [123517451] [2022-11-16 16:37:10,467 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 16:37:10,467 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-16 16:37:10,467 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6289e30a-84ce-488a-9a79-4a100fa2c467/bin/utaipan-Xvt2sAort0/cvc4 [2022-11-16 16:37:10,468 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6289e30a-84ce-488a-9a79-4a100fa2c467/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-16 16:37:10,469 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6289e30a-84ce-488a-9a79-4a100fa2c467/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt (47)] Waiting until timeout for monitored process [2022-11-16 16:37:13,115 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 16:37:13,115 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 16:37:13,135 INFO L263 TraceCheckSpWp]: Trace formula consists of 438 conjuncts, 137 conjunts are in the unsatisfiable core [2022-11-16 16:37:13,142 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 16:37:13,147 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 [2022-11-16 16:37:13,818 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 [2022-11-16 16:37:13,835 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 [2022-11-16 16:37:14,102 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:37:14,103 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 [2022-11-16 16:37:14,122 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:37:14,123 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 [2022-11-16 16:37:14,160 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-16 16:37:14,160 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 [2022-11-16 16:37:14,510 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 [2022-11-16 16:37:14,521 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 [2022-11-16 16:37:17,747 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 78 treesize of output 43 [2022-11-16 16:37:17,817 INFO L321 Elim1Store]: treesize reduction 46, result has 19.3 percent of original size [2022-11-16 16:37:17,817 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 83 treesize of output 117 [2022-11-16 16:37:17,824 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 121 treesize of output 89 [2022-11-16 16:37:17,838 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 42 treesize of output 24 [2022-11-16 16:37:17,852 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 87 treesize of output 30 [2022-11-16 16:37:18,279 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-16 16:37:18,279 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 [2022-11-16 16:37:18,331 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 6 treesize of output 5 [2022-11-16 16:37:18,783 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 17 treesize of output 19 [2022-11-16 16:37:18,841 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 8 treesize of output 4 [2022-11-16 16:37:20,628 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 [2022-11-16 16:37:21,172 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-16 16:37:21,172 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 16 treesize of output 22 [2022-11-16 16:37:21,192 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 3 [2022-11-16 16:37:21,733 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-16 16:37:21,733 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 20 treesize of output 26 [2022-11-16 16:37:22,330 INFO L321 Elim1Store]: treesize reduction 17, result has 46.9 percent of original size [2022-11-16 16:37:22,330 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 26 treesize of output 38 [2022-11-16 16:37:22,337 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 3 [2022-11-16 16:37:23,019 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 23 [2022-11-16 16:37:23,082 INFO L321 Elim1Store]: treesize reduction 24, result has 38.5 percent of original size [2022-11-16 16:37:23,082 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 2 new quantified variables, introduced 2 case distinctions, treesize of input 50 treesize of output 55 [2022-11-16 16:37:23,698 INFO L321 Elim1Store]: treesize reduction 12, result has 52.0 percent of original size [2022-11-16 16:37:23,698 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 24 treesize of output 26 [2022-11-16 16:37:23,717 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 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-16 16:37:24,152 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 32 treesize of output 30 [2022-11-16 16:37:24,177 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-16 16:37:25,027 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 16:37:25,027 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 7 [2022-11-16 16:37:25,037 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 16:37:25,038 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 17 [2022-11-16 16:37:27,003 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 3 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 16:37:27,003 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 16:37:33,999 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 16:37:34,000 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 74 treesize of output 75 [2022-11-16 16:37:34,067 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 16:37:34,067 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 1962 treesize of output 1943 [2022-11-16 16:37:34,089 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 1926 treesize of output 1894 [2022-11-16 16:37:34,107 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 1894 treesize of output 1830 [2022-11-16 16:37:34,125 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 1830 treesize of output 1814 [2022-11-16 16:37:52,891 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 14 treesize of output 10 [2022-11-16 16:37:56,677 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 14 treesize of output 10 [2022-11-16 16:37:57,722 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 14 treesize of output 10 [2022-11-16 16:38:04,891 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 16:38:04,891 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 71 treesize of output 60 [2022-11-16 16:38:04,939 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 16:38:04,939 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 414 treesize of output 395 [2022-11-16 16:38:04,955 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 378 treesize of output 346 [2022-11-16 16:38:04,979 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 181 treesize of output 165 [2022-11-16 16:38:04,992 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 330 treesize of output 266 [2022-11-16 16:38:07,822 WARN L855 $PredicateComparison]: unable to prove that (let ((.cse168 (select |c_#memory_$Pointer$.base| |c_create_sub_list_insert_sub_~head#1.base|)) (.cse169 (bvadd (_ bv4 32) |c_create_sub_list_insert_sub_~head#1.offset|))) (let ((.cse18 (select .cse168 .cse169))) (let ((.cse20 (= .cse18 |c_create_sub_list_~sub#1.base|)) (.cse5 (= |c_create_sub_list_insert_sub_~sub~0#1.base| |c_create_sub_list_~sub#1.base|)) (.cse15 (bvadd (_ bv8 32) |c_create_sub_list_~sub#1.offset|)) (.cse17 (store |c_#memory_$Pointer$.base| |c_create_sub_list_insert_sub_~head#1.base| (store .cse168 .cse169 |c_create_sub_list_insert_sub_~sub~0#1.base|))) (.cse19 (bvadd (_ bv4 32) |c_create_sub_list_~sub#1.offset|))) (let ((.cse136 (forall ((v_arrayElimCell_489 (_ BitVec 32)) (v_ArrVal_4306 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4305 (Array (_ BitVec 32) (_ BitVec 32))) (|v_create_sub_list_insert_sub_~sub~0#1.base_125| (_ BitVec 32)) (v_arrayElimCell_490 (_ BitVec 32)) (v_ArrVal_4287 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse167 (store |c_#length| |v_create_sub_list_insert_sub_~sub~0#1.base_125| (_ bv12 32)))) (let ((.cse166 (select .cse167 (select (select (store (store (store .cse17 |c_create_sub_list_insert_sub_~sub~0#1.base| v_ArrVal_4306) .cse18 v_ArrVal_4305) |v_create_sub_list_insert_sub_~sub~0#1.base_125| v_ArrVal_4287) |c_create_sub_list_~sub#1.base|) .cse19)))) (or (not (= (select |c_#valid| |v_create_sub_list_insert_sub_~sub~0#1.base_125|) (_ bv0 1))) (bvule (bvadd v_arrayElimCell_490 (_ bv4 32)) .cse166) (bvule (bvadd v_arrayElimCell_489 (_ bv4 32)) .cse166) (not (bvule .cse15 (select .cse167 |c_create_sub_list_~sub#1.base|)))))))) (.cse135 (forall ((v_arrayElimCell_489 (_ BitVec 32)) (v_ArrVal_4306 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4305 (Array (_ BitVec 32) (_ BitVec 32))) (|v_create_sub_list_insert_sub_~sub~0#1.base_125| (_ BitVec 32)) (v_arrayElimCell_490 (_ BitVec 32)) (v_ArrVal_4287 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse165 (store |c_#length| |v_create_sub_list_insert_sub_~sub~0#1.base_125| (_ bv12 32)))) (let ((.cse164 (select .cse165 (select (select (store (store (store .cse17 |c_create_sub_list_insert_sub_~sub~0#1.base| v_ArrVal_4306) .cse18 v_ArrVal_4305) |v_create_sub_list_insert_sub_~sub~0#1.base_125| v_ArrVal_4287) |c_create_sub_list_~sub#1.base|) .cse19)))) (or (not (= (select |c_#valid| |v_create_sub_list_insert_sub_~sub~0#1.base_125|) (_ bv0 1))) (bvule (bvadd v_arrayElimCell_490 (_ bv4 32)) .cse164) (bvule (bvadd v_arrayElimCell_489 (_ bv4 32)) .cse164) (not (bvule .cse15 (select .cse165 |c_create_sub_list_~sub#1.base|))) (= |v_create_sub_list_insert_sub_~sub~0#1.base_125| |c_create_sub_list_~sub#1.base|)))))) (.cse62 (not .cse5)) (.cse63 (not .cse20))) (let ((.cse60 (forall ((|v_create_sub_list_insert_sub_~sub~0#1.base_125| (_ BitVec 32))) (let ((.cse162 (store |c_#length| |v_create_sub_list_insert_sub_~sub~0#1.base_125| (_ bv12 32)))) (or (not (= (select |c_#valid| |v_create_sub_list_insert_sub_~sub~0#1.base_125|) (_ bv0 1))) (not (bvule .cse15 (select .cse162 |c_create_sub_list_~sub#1.base|))) (forall ((v_arrayElimCell_489 (_ BitVec 32)) (v_arrayElimCell_488 (_ BitVec 32)) (v_ArrVal_4306 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4305 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4287 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse163 (select .cse162 (select (select (store (store (store .cse17 |c_create_sub_list_insert_sub_~sub~0#1.base| v_ArrVal_4306) .cse18 v_ArrVal_4305) |v_create_sub_list_insert_sub_~sub~0#1.base_125| v_ArrVal_4287) |c_create_sub_list_~sub#1.base|) .cse19)))) (or (bvule (bvadd v_arrayElimCell_489 (_ bv4 32)) .cse163) (bvule (bvadd v_arrayElimCell_488 (_ bv4 32)) .cse163)))))))) (.cse61 (forall ((|v_create_sub_list_insert_sub_~sub~0#1.base_125| (_ BitVec 32))) (let ((.cse160 (store |c_#length| |v_create_sub_list_insert_sub_~sub~0#1.base_125| (_ bv12 32)))) (or (not (= (select |c_#valid| |v_create_sub_list_insert_sub_~sub~0#1.base_125|) (_ bv0 1))) (not (bvule .cse15 (select .cse160 |c_create_sub_list_~sub#1.base|))) (forall ((v_arrayElimCell_489 (_ BitVec 32)) (v_arrayElimCell_488 (_ BitVec 32)) (v_ArrVal_4306 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4305 (Array (_ BitVec 32) (_ BitVec 32))) (v_arrayElimCell_490 (_ BitVec 32)) (v_ArrVal_4287 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse161 (select .cse160 (select (select (store (store (store .cse17 |c_create_sub_list_insert_sub_~sub~0#1.base| v_ArrVal_4306) .cse18 v_ArrVal_4305) |v_create_sub_list_insert_sub_~sub~0#1.base_125| v_ArrVal_4287) |c_create_sub_list_~sub#1.base|) .cse19)))) (or (bvule (bvadd v_arrayElimCell_490 (_ bv4 32)) .cse161) (bvule (bvadd v_arrayElimCell_489 (_ bv4 32)) .cse161) (bvule (bvadd v_arrayElimCell_488 (_ bv4 32)) .cse161)))))))) (.cse7 (or .cse63 (forall ((v_arrayElimCell_489 (_ BitVec 32)) (v_arrayElimCell_488 (_ BitVec 32)) (v_ArrVal_4306 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4305 (Array (_ BitVec 32) (_ BitVec 32))) (|v_create_sub_list_insert_sub_~sub~0#1.base_125| (_ BitVec 32)) (v_arrayElimCell_490 (_ BitVec 32)) (v_ArrVal_4287 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse159 (store |c_#length| |v_create_sub_list_insert_sub_~sub~0#1.base_125| (_ bv12 32)))) (let ((.cse158 (select .cse159 (select (select (store (store (store .cse17 |c_create_sub_list_insert_sub_~sub~0#1.base| v_ArrVal_4306) .cse18 v_ArrVal_4305) |v_create_sub_list_insert_sub_~sub~0#1.base_125| v_ArrVal_4287) |c_create_sub_list_~sub#1.base|) .cse19)))) (or (not (= (select |c_#valid| |v_create_sub_list_insert_sub_~sub~0#1.base_125|) (_ bv0 1))) (bvule (bvadd v_arrayElimCell_490 (_ bv4 32)) .cse158) (bvule (bvadd v_arrayElimCell_489 (_ bv4 32)) .cse158) (not (bvule .cse15 (select .cse159 |c_create_sub_list_~sub#1.base|))) (bvule (bvadd v_arrayElimCell_488 (_ bv4 32)) .cse158))))))) (.cse100 (forall ((|v_create_sub_list_insert_sub_~sub~0#1.base_125| (_ BitVec 32))) (let ((.cse157 (store |c_#length| |v_create_sub_list_insert_sub_~sub~0#1.base_125| (_ bv12 32)))) (or (not (= (select |c_#valid| |v_create_sub_list_insert_sub_~sub~0#1.base_125|) (_ bv0 1))) (forall ((v_arrayElimCell_487 (_ BitVec 32)) (v_arrayElimCell_489 (_ BitVec 32)) (v_arrayElimCell_488 (_ BitVec 32)) (v_ArrVal_4306 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4305 (Array (_ BitVec 32) (_ BitVec 32))) (v_arrayElimCell_490 (_ BitVec 32)) (v_ArrVal_4287 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse156 (select .cse157 (select (select (store (store (store .cse17 |c_create_sub_list_insert_sub_~sub~0#1.base| v_ArrVal_4306) .cse18 v_ArrVal_4305) |v_create_sub_list_insert_sub_~sub~0#1.base_125| v_ArrVal_4287) |c_create_sub_list_~sub#1.base|) .cse19)))) (or (bvule (bvadd v_arrayElimCell_490 (_ bv4 32)) .cse156) (bvule (bvadd v_arrayElimCell_489 (_ bv4 32)) .cse156) (bvule (bvadd v_arrayElimCell_487 (_ bv4 32)) .cse156) (bvule (bvadd v_arrayElimCell_488 (_ bv4 32)) .cse156)))) (not (bvule .cse15 (select .cse157 |c_create_sub_list_~sub#1.base|))))))) (.cse101 (forall ((|v_create_sub_list_insert_sub_~sub~0#1.base_125| (_ BitVec 32))) (let ((.cse155 (store |c_#length| |v_create_sub_list_insert_sub_~sub~0#1.base_125| (_ bv12 32)))) (or (not (= (select |c_#valid| |v_create_sub_list_insert_sub_~sub~0#1.base_125|) (_ bv0 1))) (forall ((v_arrayElimCell_487 (_ BitVec 32)) (v_arrayElimCell_489 (_ BitVec 32)) (v_ArrVal_4306 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4305 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4287 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse154 (select .cse155 (select (select (store (store (store .cse17 |c_create_sub_list_insert_sub_~sub~0#1.base| v_ArrVal_4306) .cse18 v_ArrVal_4305) |v_create_sub_list_insert_sub_~sub~0#1.base_125| v_ArrVal_4287) |c_create_sub_list_~sub#1.base|) .cse19)))) (or (bvule (bvadd v_arrayElimCell_489 (_ bv4 32)) .cse154) (bvule (bvadd v_arrayElimCell_487 (_ bv4 32)) .cse154) (forall ((v_arrayElimCell_488 (_ BitVec 32))) (bvule (bvadd v_arrayElimCell_488 (_ bv4 32)) .cse154))))) (not (bvule .cse15 (select .cse155 |c_create_sub_list_~sub#1.base|))))))) (.cse102 (or (forall ((v_arrayElimCell_487 (_ BitVec 32)) (v_arrayElimCell_489 (_ BitVec 32)) (v_ArrVal_4306 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4305 (Array (_ BitVec 32) (_ BitVec 32))) (|v_create_sub_list_insert_sub_~sub~0#1.base_125| (_ BitVec 32)) (v_ArrVal_4287 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse153 (store |c_#length| |v_create_sub_list_insert_sub_~sub~0#1.base_125| (_ bv12 32)))) (let ((.cse152 (select .cse153 (select (select (store (store (store .cse17 |c_create_sub_list_insert_sub_~sub~0#1.base| v_ArrVal_4306) .cse18 v_ArrVal_4305) |v_create_sub_list_insert_sub_~sub~0#1.base_125| v_ArrVal_4287) |c_create_sub_list_~sub#1.base|) .cse19)))) (or (not (= (select |c_#valid| |v_create_sub_list_insert_sub_~sub~0#1.base_125|) (_ bv0 1))) (bvule (bvadd v_arrayElimCell_489 (_ bv4 32)) .cse152) (not (bvule .cse15 (select .cse153 |c_create_sub_list_~sub#1.base|))) (bvule (bvadd v_arrayElimCell_487 (_ bv4 32)) .cse152))))) .cse20)) (.cse27 (or .cse135 .cse62)) (.cse103 (forall ((v_arrayElimCell_487 (_ BitVec 32)) (v_arrayElimCell_489 (_ BitVec 32)) (v_ArrVal_4306 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4305 (Array (_ BitVec 32) (_ BitVec 32))) (|v_create_sub_list_insert_sub_~sub~0#1.base_125| (_ BitVec 32)) (v_ArrVal_4287 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse151 (store |c_#length| |v_create_sub_list_insert_sub_~sub~0#1.base_125| (_ bv12 32)))) (let ((.cse150 (select .cse151 (select (select (store (store (store .cse17 |c_create_sub_list_insert_sub_~sub~0#1.base| v_ArrVal_4306) .cse18 v_ArrVal_4305) |v_create_sub_list_insert_sub_~sub~0#1.base_125| v_ArrVal_4287) |c_create_sub_list_~sub#1.base|) .cse19)))) (or (not (= (select |c_#valid| |v_create_sub_list_insert_sub_~sub~0#1.base_125|) (_ bv0 1))) (bvule (bvadd v_arrayElimCell_489 (_ bv4 32)) .cse150) (not (bvule .cse15 (select .cse151 |c_create_sub_list_~sub#1.base|))) (= |v_create_sub_list_insert_sub_~sub~0#1.base_125| |c_create_sub_list_~sub#1.base|) (bvule (bvadd v_arrayElimCell_487 (_ bv4 32)) .cse150)))))) (.cse52 (or .cse136 .cse62)) (.cse34 (forall ((|v_create_sub_list_insert_sub_~sub~0#1.base_125| (_ BitVec 32))) (let ((.cse148 (store |c_#length| |v_create_sub_list_insert_sub_~sub~0#1.base_125| (_ bv12 32)))) (or (not (= (select |c_#valid| |v_create_sub_list_insert_sub_~sub~0#1.base_125|) (_ bv0 1))) (not (bvule .cse15 (select .cse148 |c_create_sub_list_~sub#1.base|))) (forall ((v_arrayElimCell_487 (_ BitVec 32)) (v_arrayElimCell_489 (_ BitVec 32)) (v_ArrVal_4306 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4305 (Array (_ BitVec 32) (_ BitVec 32))) (v_arrayElimCell_490 (_ BitVec 32)) (v_ArrVal_4287 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse149 (select .cse148 (select (select (store (store (store .cse17 |c_create_sub_list_insert_sub_~sub~0#1.base| v_ArrVal_4306) .cse18 v_ArrVal_4305) |v_create_sub_list_insert_sub_~sub~0#1.base_125| v_ArrVal_4287) |c_create_sub_list_~sub#1.base|) .cse19)))) (or (bvule (bvadd v_arrayElimCell_490 (_ bv4 32)) .cse149) (bvule (bvadd v_arrayElimCell_489 (_ bv4 32)) .cse149) (bvule (bvadd v_arrayElimCell_487 (_ bv4 32)) .cse149) (forall ((v_arrayElimCell_488 (_ BitVec 32))) (bvule (bvadd v_arrayElimCell_488 (_ bv4 32)) .cse149))))))))) (.cse35 (or (forall ((v_arrayElimCell_487 (_ BitVec 32)) (v_arrayElimCell_489 (_ BitVec 32)) (v_ArrVal_4306 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4305 (Array (_ BitVec 32) (_ BitVec 32))) (|v_create_sub_list_insert_sub_~sub~0#1.base_125| (_ BitVec 32)) (v_arrayElimCell_490 (_ BitVec 32)) (v_ArrVal_4287 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse147 (store |c_#length| |v_create_sub_list_insert_sub_~sub~0#1.base_125| (_ bv12 32)))) (let ((.cse146 (select .cse147 (select (select (store (store (store .cse17 |c_create_sub_list_insert_sub_~sub~0#1.base| v_ArrVal_4306) .cse18 v_ArrVal_4305) |v_create_sub_list_insert_sub_~sub~0#1.base_125| v_ArrVal_4287) |c_create_sub_list_~sub#1.base|) .cse19)))) (or (not (= (select |c_#valid| |v_create_sub_list_insert_sub_~sub~0#1.base_125|) (_ bv0 1))) (bvule (bvadd v_arrayElimCell_490 (_ bv4 32)) .cse146) (bvule (bvadd v_arrayElimCell_489 (_ bv4 32)) .cse146) (not (bvule .cse15 (select .cse147 |c_create_sub_list_~sub#1.base|))) (bvule (bvadd v_arrayElimCell_487 (_ bv4 32)) .cse146))))) .cse20)) (.cse94 (forall ((v_ArrVal_4306 (Array (_ BitVec 32) (_ BitVec 32))) (|v_create_sub_list_insert_sub_~sub~0#1.base_125| (_ BitVec 32)) (v_ArrVal_4305 (Array (_ BitVec 32) (_ BitVec 32))) (v_arrayElimCell_490 (_ BitVec 32)) (v_ArrVal_4287 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse145 (store |c_#length| |v_create_sub_list_insert_sub_~sub~0#1.base_125| (_ bv12 32)))) (or (not (= (select |c_#valid| |v_create_sub_list_insert_sub_~sub~0#1.base_125|) (_ bv0 1))) (bvule (bvadd v_arrayElimCell_490 (_ bv4 32)) (select .cse145 (select (select (store (store (store .cse17 |c_create_sub_list_insert_sub_~sub~0#1.base| v_ArrVal_4306) .cse18 v_ArrVal_4305) |v_create_sub_list_insert_sub_~sub~0#1.base_125| v_ArrVal_4287) |c_create_sub_list_~sub#1.base|) .cse19))) (not (bvule .cse15 (select .cse145 |c_create_sub_list_~sub#1.base|))) (= |v_create_sub_list_insert_sub_~sub~0#1.base_125| |c_create_sub_list_~sub#1.base|))))) (.cse40 (forall ((|v_create_sub_list_insert_sub_~sub~0#1.base_125| (_ BitVec 32))) (let ((.cse143 (store |c_#length| |v_create_sub_list_insert_sub_~sub~0#1.base_125| (_ bv12 32)))) (or (not (= (select |c_#valid| |v_create_sub_list_insert_sub_~sub~0#1.base_125|) (_ bv0 1))) (not (bvule .cse15 (select .cse143 |c_create_sub_list_~sub#1.base|))) (= |v_create_sub_list_insert_sub_~sub~0#1.base_125| |c_create_sub_list_~sub#1.base|) (forall ((v_arrayElimCell_487 (_ BitVec 32)) (v_arrayElimCell_489 (_ BitVec 32)) (v_ArrVal_4306 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4305 (Array (_ BitVec 32) (_ BitVec 32))) (v_arrayElimCell_490 (_ BitVec 32)) (v_ArrVal_4287 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse144 (select .cse143 (select (select (store (store (store .cse17 |c_create_sub_list_insert_sub_~sub~0#1.base| v_ArrVal_4306) .cse18 v_ArrVal_4305) |v_create_sub_list_insert_sub_~sub~0#1.base_125| v_ArrVal_4287) |c_create_sub_list_~sub#1.base|) .cse19)))) (or (bvule (bvadd v_arrayElimCell_490 (_ bv4 32)) .cse144) (bvule (bvadd v_arrayElimCell_489 (_ bv4 32)) .cse144) (bvule (bvadd v_arrayElimCell_487 (_ bv4 32)) .cse144) (forall ((v_arrayElimCell_488 (_ BitVec 32))) (bvule (bvadd v_arrayElimCell_488 (_ bv4 32)) .cse144))))))))) (.cse46 (or .cse20 (forall ((v_arrayElimCell_487 (_ BitVec 32)) (v_arrayElimCell_489 (_ BitVec 32)) (v_ArrVal_4306 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4305 (Array (_ BitVec 32) (_ BitVec 32))) (|v_create_sub_list_insert_sub_~sub~0#1.base_125| (_ BitVec 32)) (v_arrayElimCell_490 (_ BitVec 32)) (v_ArrVal_4287 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse142 (store |c_#length| |v_create_sub_list_insert_sub_~sub~0#1.base_125| (_ bv12 32)))) (let ((.cse141 (select .cse142 (select (select (store (store (store .cse17 |c_create_sub_list_insert_sub_~sub~0#1.base| v_ArrVal_4306) .cse18 v_ArrVal_4305) |v_create_sub_list_insert_sub_~sub~0#1.base_125| v_ArrVal_4287) |c_create_sub_list_~sub#1.base|) .cse19)))) (or (not (= (select |c_#valid| |v_create_sub_list_insert_sub_~sub~0#1.base_125|) (_ bv0 1))) (bvule (bvadd v_arrayElimCell_490 (_ bv4 32)) .cse141) (bvule (bvadd v_arrayElimCell_489 (_ bv4 32)) .cse141) (not (bvule .cse15 (select .cse142 |c_create_sub_list_~sub#1.base|))) (= |v_create_sub_list_insert_sub_~sub~0#1.base_125| |c_create_sub_list_~sub#1.base|) (bvule (bvadd v_arrayElimCell_487 (_ bv4 32)) .cse141))))))) (.cse31 (or .cse63 (forall ((v_arrayElimCell_489 (_ BitVec 32)) (v_arrayElimCell_488 (_ BitVec 32)) (v_ArrVal_4306 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4305 (Array (_ BitVec 32) (_ BitVec 32))) (|v_create_sub_list_insert_sub_~sub~0#1.base_125| (_ BitVec 32)) (v_ArrVal_4287 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse140 (store |c_#length| |v_create_sub_list_insert_sub_~sub~0#1.base_125| (_ bv12 32)))) (let ((.cse139 (select .cse140 (select (select (store (store (store .cse17 |c_create_sub_list_insert_sub_~sub~0#1.base| v_ArrVal_4306) .cse18 v_ArrVal_4305) |v_create_sub_list_insert_sub_~sub~0#1.base_125| v_ArrVal_4287) |c_create_sub_list_~sub#1.base|) .cse19)))) (or (not (= (select |c_#valid| |v_create_sub_list_insert_sub_~sub~0#1.base_125|) (_ bv0 1))) (bvule (bvadd v_arrayElimCell_489 (_ bv4 32)) .cse139) (not (bvule .cse15 (select .cse140 |c_create_sub_list_~sub#1.base|))) (= |v_create_sub_list_insert_sub_~sub~0#1.base_125| |c_create_sub_list_~sub#1.base|) (bvule (bvadd v_arrayElimCell_488 (_ bv4 32)) .cse139))))))) (.cse78 (forall ((|v_create_sub_list_insert_sub_~sub~0#1.base_125| (_ BitVec 32))) (let ((.cse138 (store |c_#length| |v_create_sub_list_insert_sub_~sub~0#1.base_125| (_ bv12 32)))) (or (not (= (select |c_#valid| |v_create_sub_list_insert_sub_~sub~0#1.base_125|) (_ bv0 1))) (forall ((v_arrayElimCell_489 (_ BitVec 32)) (v_ArrVal_4306 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4305 (Array (_ BitVec 32) (_ BitVec 32))) (v_arrayElimCell_490 (_ BitVec 32)) (v_ArrVal_4287 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse137 (select .cse138 (select (select (store (store (store .cse17 |c_create_sub_list_insert_sub_~sub~0#1.base| v_ArrVal_4306) .cse18 v_ArrVal_4305) |v_create_sub_list_insert_sub_~sub~0#1.base_125| v_ArrVal_4287) |c_create_sub_list_~sub#1.base|) .cse19)))) (or (bvule (bvadd v_arrayElimCell_490 (_ bv4 32)) .cse137) (bvule (bvadd v_arrayElimCell_489 (_ bv4 32)) .cse137) (forall ((v_arrayElimCell_488 (_ BitVec 32))) (bvule (bvadd v_arrayElimCell_488 (_ bv4 32)) .cse137))))) (not (bvule .cse15 (select .cse138 |c_create_sub_list_~sub#1.base|))))))) (.cse79 (or .cse136 .cse20)) (.cse118 (or .cse135 .cse20)) (.cse119 (forall ((|v_create_sub_list_insert_sub_~sub~0#1.base_125| (_ BitVec 32))) (let ((.cse134 (store |c_#length| |v_create_sub_list_insert_sub_~sub~0#1.base_125| (_ bv12 32)))) (or (not (= (select |c_#valid| |v_create_sub_list_insert_sub_~sub~0#1.base_125|) (_ bv0 1))) (forall ((v_arrayElimCell_489 (_ BitVec 32)) (v_ArrVal_4306 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4305 (Array (_ BitVec 32) (_ BitVec 32))) (v_arrayElimCell_490 (_ BitVec 32)) (v_ArrVal_4287 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse133 (select .cse134 (select (select (store (store (store .cse17 |c_create_sub_list_insert_sub_~sub~0#1.base| v_ArrVal_4306) .cse18 v_ArrVal_4305) |v_create_sub_list_insert_sub_~sub~0#1.base_125| v_ArrVal_4287) |c_create_sub_list_~sub#1.base|) .cse19)))) (or (bvule (bvadd v_arrayElimCell_490 (_ bv4 32)) .cse133) (bvule (bvadd v_arrayElimCell_489 (_ bv4 32)) .cse133) (forall ((v_arrayElimCell_488 (_ BitVec 32))) (bvule (bvadd v_arrayElimCell_488 (_ bv4 32)) .cse133))))) (not (bvule .cse15 (select .cse134 |c_create_sub_list_~sub#1.base|))) (= |v_create_sub_list_insert_sub_~sub~0#1.base_125| |c_create_sub_list_~sub#1.base|))))) (.cse65 (forall ((|v_create_sub_list_insert_sub_~sub~0#1.base_125| (_ BitVec 32))) (let ((.cse132 (store |c_#length| |v_create_sub_list_insert_sub_~sub~0#1.base_125| (_ bv12 32)))) (or (not (= (select |c_#valid| |v_create_sub_list_insert_sub_~sub~0#1.base_125|) (_ bv0 1))) (forall ((v_arrayElimCell_488 (_ BitVec 32)) (v_ArrVal_4306 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4305 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4287 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd v_arrayElimCell_488 (_ bv4 32)) (select .cse132 (select (select (store (store (store .cse17 |c_create_sub_list_insert_sub_~sub~0#1.base| v_ArrVal_4306) .cse18 v_ArrVal_4305) |v_create_sub_list_insert_sub_~sub~0#1.base_125| v_ArrVal_4287) |c_create_sub_list_~sub#1.base|) .cse19)))) (not (bvule .cse15 (select .cse132 |c_create_sub_list_~sub#1.base|))) (= |v_create_sub_list_insert_sub_~sub~0#1.base_125| |c_create_sub_list_~sub#1.base|))))) (.cse70 (forall ((|v_create_sub_list_insert_sub_~sub~0#1.base_125| (_ BitVec 32))) (let ((.cse131 (store |c_#length| |v_create_sub_list_insert_sub_~sub~0#1.base_125| (_ bv12 32)))) (or (not (= (select |c_#valid| |v_create_sub_list_insert_sub_~sub~0#1.base_125|) (_ bv0 1))) (forall ((v_ArrVal_4306 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4305 (Array (_ BitVec 32) (_ BitVec 32))) (v_arrayElimCell_490 (_ BitVec 32)) (v_ArrVal_4287 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse130 (select .cse131 (select (select (store (store (store .cse17 |c_create_sub_list_insert_sub_~sub~0#1.base| v_ArrVal_4306) .cse18 v_ArrVal_4305) |v_create_sub_list_insert_sub_~sub~0#1.base_125| v_ArrVal_4287) |c_create_sub_list_~sub#1.base|) .cse19)))) (or (bvule (bvadd v_arrayElimCell_490 (_ bv4 32)) .cse130) (forall ((v_arrayElimCell_488 (_ BitVec 32))) (bvule (bvadd v_arrayElimCell_488 (_ bv4 32)) .cse130))))) (not (bvule .cse15 (select .cse131 |c_create_sub_list_~sub#1.base|))) (= |v_create_sub_list_insert_sub_~sub~0#1.base_125| |c_create_sub_list_~sub#1.base|))))) (.cse11 (or .cse63 (forall ((v_arrayElimCell_489 (_ BitVec 32)) (v_arrayElimCell_488 (_ BitVec 32)) (v_ArrVal_4306 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4305 (Array (_ BitVec 32) (_ BitVec 32))) (|v_create_sub_list_insert_sub_~sub~0#1.base_125| (_ BitVec 32)) (v_ArrVal_4287 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse129 (store |c_#length| |v_create_sub_list_insert_sub_~sub~0#1.base_125| (_ bv12 32)))) (let ((.cse128 (select .cse129 (select (select (store (store (store .cse17 |c_create_sub_list_insert_sub_~sub~0#1.base| v_ArrVal_4306) .cse18 v_ArrVal_4305) |v_create_sub_list_insert_sub_~sub~0#1.base_125| v_ArrVal_4287) |c_create_sub_list_~sub#1.base|) .cse19)))) (or (not (= (select |c_#valid| |v_create_sub_list_insert_sub_~sub~0#1.base_125|) (_ bv0 1))) (bvule (bvadd v_arrayElimCell_489 (_ bv4 32)) .cse128) (not (bvule .cse15 (select .cse129 |c_create_sub_list_~sub#1.base|))) (bvule (bvadd v_arrayElimCell_488 (_ bv4 32)) .cse128))))))) (.cse36 (or .cse63 (forall ((v_arrayElimCell_488 (_ BitVec 32)) (v_ArrVal_4306 (Array (_ BitVec 32) (_ BitVec 32))) (|v_create_sub_list_insert_sub_~sub~0#1.base_125| (_ BitVec 32)) (v_ArrVal_4305 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4287 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse127 (store |c_#length| |v_create_sub_list_insert_sub_~sub~0#1.base_125| (_ bv12 32)))) (or (not (= (select |c_#valid| |v_create_sub_list_insert_sub_~sub~0#1.base_125|) (_ bv0 1))) (not (bvule .cse15 (select .cse127 |c_create_sub_list_~sub#1.base|))) (= |v_create_sub_list_insert_sub_~sub~0#1.base_125| |c_create_sub_list_~sub#1.base|) (bvule (bvadd v_arrayElimCell_488 (_ bv4 32)) (select .cse127 (select (select (store (store (store .cse17 |c_create_sub_list_insert_sub_~sub~0#1.base| v_ArrVal_4306) .cse18 v_ArrVal_4305) |v_create_sub_list_insert_sub_~sub~0#1.base_125| v_ArrVal_4287) |c_create_sub_list_~sub#1.base|) .cse19)))))))) (.cse13 (bvadd (_ bv8 32) |c_create_sub_list_insert_sub_~sub~0#1.offset|))) (let ((.cse10 (forall ((|v_create_sub_list_insert_sub_~sub~0#1.base_125| (_ BitVec 32))) (let ((.cse125 (store |c_#length| |v_create_sub_list_insert_sub_~sub~0#1.base_125| (_ bv12 32)))) (or (not (= (select |c_#valid| |v_create_sub_list_insert_sub_~sub~0#1.base_125|) (_ bv0 1))) (not (bvule .cse15 (select .cse125 |c_create_sub_list_~sub#1.base|))) (forall ((v_arrayElimCell_489 (_ BitVec 32)) (v_arrayElimCell_488 (_ BitVec 32)) (v_ArrVal_4306 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4305 (Array (_ BitVec 32) (_ BitVec 32))) (v_arrayElimCell_490 (_ BitVec 32)) (v_ArrVal_4287 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse126 (select .cse125 (select (select (store (store (store .cse17 |c_create_sub_list_insert_sub_~sub~0#1.base| v_ArrVal_4306) .cse18 v_ArrVal_4305) |v_create_sub_list_insert_sub_~sub~0#1.base_125| v_ArrVal_4287) |c_create_sub_list_~sub#1.base|) .cse19)))) (or (bvule .cse13 .cse126) (bvule (bvadd v_arrayElimCell_490 (_ bv4 32)) .cse126) (bvule (bvadd v_arrayElimCell_489 (_ bv4 32)) .cse126) (bvule (bvadd v_arrayElimCell_488 (_ bv4 32)) .cse126)))))))) (.cse56 (or (forall ((v_arrayElimCell_489 (_ BitVec 32)) (v_ArrVal_4306 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4305 (Array (_ BitVec 32) (_ BitVec 32))) (|v_create_sub_list_insert_sub_~sub~0#1.base_125| (_ BitVec 32)) (v_arrayElimCell_490 (_ BitVec 32)) (v_ArrVal_4287 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse124 (store |c_#length| |v_create_sub_list_insert_sub_~sub~0#1.base_125| (_ bv12 32)))) (let ((.cse123 (select .cse124 (select (select (store (store (store .cse17 |c_create_sub_list_insert_sub_~sub~0#1.base| v_ArrVal_4306) .cse18 v_ArrVal_4305) |v_create_sub_list_insert_sub_~sub~0#1.base_125| v_ArrVal_4287) |c_create_sub_list_~sub#1.base|) .cse19)))) (or (not (= (select |c_#valid| |v_create_sub_list_insert_sub_~sub~0#1.base_125|) (_ bv0 1))) (bvule .cse13 .cse123) (bvule (bvadd v_arrayElimCell_490 (_ bv4 32)) .cse123) (bvule (bvadd v_arrayElimCell_489 (_ bv4 32)) .cse123) (not (bvule .cse15 (select .cse124 |c_create_sub_list_~sub#1.base|))) (= |v_create_sub_list_insert_sub_~sub~0#1.base_125| |c_create_sub_list_~sub#1.base|))))) .cse20)) (.cse28 (or .cse5 (and .cse36 (or (forall ((v_arrayElimCell_487 (_ BitVec 32)) (v_ArrVal_4306 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4305 (Array (_ BitVec 32) (_ BitVec 32))) (|v_create_sub_list_insert_sub_~sub~0#1.base_125| (_ BitVec 32)) (v_ArrVal_4287 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse120 (store |c_#length| |v_create_sub_list_insert_sub_~sub~0#1.base_125| (_ bv12 32)))) (or (not (= (select |c_#valid| |v_create_sub_list_insert_sub_~sub~0#1.base_125|) (_ bv0 1))) (not (bvule .cse15 (select .cse120 |c_create_sub_list_~sub#1.base|))) (= |v_create_sub_list_insert_sub_~sub~0#1.base_125| |c_create_sub_list_~sub#1.base|) (bvule (bvadd v_arrayElimCell_487 (_ bv4 32)) (select .cse120 (select (select (store (store (store .cse17 |c_create_sub_list_insert_sub_~sub~0#1.base| v_ArrVal_4306) .cse18 v_ArrVal_4305) |v_create_sub_list_insert_sub_~sub~0#1.base_125| v_ArrVal_4287) |c_create_sub_list_~sub#1.base|) .cse19)))))) .cse20) (forall ((|v_create_sub_list_insert_sub_~sub~0#1.base_125| (_ BitVec 32))) (let ((.cse121 (store |c_#length| |v_create_sub_list_insert_sub_~sub~0#1.base_125| (_ bv12 32)))) (or (not (= (select |c_#valid| |v_create_sub_list_insert_sub_~sub~0#1.base_125|) (_ bv0 1))) (not (bvule .cse15 (select .cse121 |c_create_sub_list_~sub#1.base|))) (= |v_create_sub_list_insert_sub_~sub~0#1.base_125| |c_create_sub_list_~sub#1.base|) (forall ((v_arrayElimCell_487 (_ BitVec 32)) (v_arrayElimCell_488 (_ BitVec 32)) (v_ArrVal_4306 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4305 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4287 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse122 (select .cse121 (select (select (store (store (store .cse17 |c_create_sub_list_insert_sub_~sub~0#1.base| v_ArrVal_4306) .cse18 v_ArrVal_4305) |v_create_sub_list_insert_sub_~sub~0#1.base_125| v_ArrVal_4287) |c_create_sub_list_~sub#1.base|) .cse19)))) (or (bvule (bvadd v_arrayElimCell_487 (_ bv4 32)) .cse122) (bvule (bvadd v_arrayElimCell_488 (_ bv4 32)) .cse122)))))))))) (.cse4 (or .cse62 (and .cse31 .cse78 .cse79 .cse118 .cse119 (or (and .cse65 .cse70) .cse63) .cse11))) (.cse29 (or .cse5 (and .cse40 .cse46))) (.cse12 (or .cse62 .cse20 .cse94)) (.cse30 (or .cse5 (and .cse34 .cse35))) (.cse21 (or (and .cse118 .cse119) .cse62)) (.cse24 (or .cse63 (forall ((v_arrayElimCell_488 (_ BitVec 32)) (v_ArrVal_4306 (Array (_ BitVec 32) (_ BitVec 32))) (|v_create_sub_list_insert_sub_~sub~0#1.base_125| (_ BitVec 32)) (v_ArrVal_4305 (Array (_ BitVec 32) (_ BitVec 32))) (v_arrayElimCell_490 (_ BitVec 32)) (v_ArrVal_4287 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse117 (store |c_#length| |v_create_sub_list_insert_sub_~sub~0#1.base_125| (_ bv12 32)))) (let ((.cse116 (select .cse117 (select (select (store (store (store .cse17 |c_create_sub_list_insert_sub_~sub~0#1.base| v_ArrVal_4306) .cse18 v_ArrVal_4305) |v_create_sub_list_insert_sub_~sub~0#1.base_125| v_ArrVal_4287) |c_create_sub_list_~sub#1.base|) .cse19)))) (or (not (= (select |c_#valid| |v_create_sub_list_insert_sub_~sub~0#1.base_125|) (_ bv0 1))) (bvule (bvadd v_arrayElimCell_490 (_ bv4 32)) .cse116) (not (bvule .cse15 (select .cse117 |c_create_sub_list_~sub#1.base|))) (= |v_create_sub_list_insert_sub_~sub~0#1.base_125| |c_create_sub_list_~sub#1.base|) (bvule (bvadd v_arrayElimCell_488 (_ bv4 32)) .cse116))))))) (.cse32 (or (and .cse52 (forall ((|v_create_sub_list_insert_sub_~sub~0#1.base_125| (_ BitVec 32))) (let ((.cse115 (store |c_#length| |v_create_sub_list_insert_sub_~sub~0#1.base_125| (_ bv12 32)))) (or (not (= (select |c_#valid| |v_create_sub_list_insert_sub_~sub~0#1.base_125|) (_ bv0 1))) (forall ((v_arrayElimCell_487 (_ BitVec 32)) (v_arrayElimCell_489 (_ BitVec 32)) (v_ArrVal_4306 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4305 (Array (_ BitVec 32) (_ BitVec 32))) (v_arrayElimCell_490 (_ BitVec 32)) (v_ArrVal_4287 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse114 (select .cse115 (select (select (store (store (store .cse17 |c_create_sub_list_insert_sub_~sub~0#1.base| v_ArrVal_4306) .cse18 v_ArrVal_4305) |v_create_sub_list_insert_sub_~sub~0#1.base_125| v_ArrVal_4287) |c_create_sub_list_~sub#1.base|) .cse19)))) (or (bvule (bvadd v_arrayElimCell_490 (_ bv4 32)) .cse114) (bvule (bvadd v_arrayElimCell_489 (_ bv4 32)) .cse114) (bvule (bvadd v_arrayElimCell_487 (_ bv4 32)) .cse114)))) (not (bvule .cse15 (select .cse115 |c_create_sub_list_~sub#1.base|))))))) .cse20)) (.cse33 (or .cse62 (and .cse78 .cse79 .cse11))) (.cse37 (or .cse5 (and (or .cse103 .cse20) (forall ((|v_create_sub_list_insert_sub_~sub~0#1.base_125| (_ BitVec 32))) (let ((.cse113 (store |c_#length| |v_create_sub_list_insert_sub_~sub~0#1.base_125| (_ bv12 32)))) (or (not (= (select |c_#valid| |v_create_sub_list_insert_sub_~sub~0#1.base_125|) (_ bv0 1))) (forall ((v_arrayElimCell_487 (_ BitVec 32)) (v_arrayElimCell_489 (_ BitVec 32)) (v_ArrVal_4306 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4305 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4287 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse112 (select .cse113 (select (select (store (store (store .cse17 |c_create_sub_list_insert_sub_~sub~0#1.base| v_ArrVal_4306) .cse18 v_ArrVal_4305) |v_create_sub_list_insert_sub_~sub~0#1.base_125| v_ArrVal_4287) |c_create_sub_list_~sub#1.base|) .cse19)))) (or (bvule (bvadd v_arrayElimCell_489 (_ bv4 32)) .cse112) (bvule (bvadd v_arrayElimCell_487 (_ bv4 32)) .cse112) (forall ((v_arrayElimCell_488 (_ BitVec 32))) (bvule (bvadd v_arrayElimCell_488 (_ bv4 32)) .cse112))))) (not (bvule .cse15 (select .cse113 |c_create_sub_list_~sub#1.base|))) (= |v_create_sub_list_insert_sub_~sub~0#1.base_125| |c_create_sub_list_~sub#1.base|))))))) (.cse39 (or (and .cse27 (forall ((|v_create_sub_list_insert_sub_~sub~0#1.base_125| (_ BitVec 32))) (let ((.cse111 (store |c_#length| |v_create_sub_list_insert_sub_~sub~0#1.base_125| (_ bv12 32)))) (or (not (= (select |c_#valid| |v_create_sub_list_insert_sub_~sub~0#1.base_125|) (_ bv0 1))) (forall ((v_arrayElimCell_487 (_ BitVec 32)) (v_arrayElimCell_489 (_ BitVec 32)) (v_ArrVal_4306 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4305 (Array (_ BitVec 32) (_ BitVec 32))) (v_arrayElimCell_490 (_ BitVec 32)) (v_ArrVal_4287 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse110 (select .cse111 (select (select (store (store (store .cse17 |c_create_sub_list_insert_sub_~sub~0#1.base| v_ArrVal_4306) .cse18 v_ArrVal_4305) |v_create_sub_list_insert_sub_~sub~0#1.base_125| v_ArrVal_4287) |c_create_sub_list_~sub#1.base|) .cse19)))) (or (bvule (bvadd v_arrayElimCell_490 (_ bv4 32)) .cse110) (bvule (bvadd v_arrayElimCell_489 (_ bv4 32)) .cse110) (bvule (bvadd v_arrayElimCell_487 (_ bv4 32)) .cse110)))) (not (bvule .cse15 (select .cse111 |c_create_sub_list_~sub#1.base|))) (= |v_create_sub_list_insert_sub_~sub~0#1.base_125| |c_create_sub_list_~sub#1.base|))))) .cse20)) (.cse42 (forall ((|v_create_sub_list_insert_sub_~sub~0#1.base_125| (_ BitVec 32))) (let ((.cse109 (store |c_#length| |v_create_sub_list_insert_sub_~sub~0#1.base_125| (_ bv12 32)))) (or (not (= (select |c_#valid| |v_create_sub_list_insert_sub_~sub~0#1.base_125|) (_ bv0 1))) (forall ((v_arrayElimCell_487 (_ BitVec 32)) (v_arrayElimCell_488 (_ BitVec 32)) (v_ArrVal_4306 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4305 (Array (_ BitVec 32) (_ BitVec 32))) (v_arrayElimCell_490 (_ BitVec 32)) (v_ArrVal_4287 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse108 (select .cse109 (select (select (store (store (store .cse17 |c_create_sub_list_insert_sub_~sub~0#1.base| v_ArrVal_4306) .cse18 v_ArrVal_4305) |v_create_sub_list_insert_sub_~sub~0#1.base_125| v_ArrVal_4287) |c_create_sub_list_~sub#1.base|) .cse19)))) (or (bvule (bvadd v_arrayElimCell_490 (_ bv4 32)) .cse108) (bvule (bvadd v_arrayElimCell_487 (_ bv4 32)) .cse108) (bvule (bvadd v_arrayElimCell_488 (_ bv4 32)) .cse108)))) (not (bvule .cse15 (select .cse109 |c_create_sub_list_~sub#1.base|))) (= |v_create_sub_list_insert_sub_~sub~0#1.base_125| |c_create_sub_list_~sub#1.base|))))) (.cse43 (or (and .cse65 (or .cse5 (forall ((v_arrayElimCell_487 (_ BitVec 32)) (v_arrayElimCell_488 (_ BitVec 32)) (v_ArrVal_4306 (Array (_ BitVec 32) (_ BitVec 32))) (|v_create_sub_list_insert_sub_~sub~0#1.base_125| (_ BitVec 32)) (v_ArrVal_4305 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4287 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse104 (store |c_#length| |v_create_sub_list_insert_sub_~sub~0#1.base_125| (_ bv12 32)))) (let ((.cse105 (select .cse104 (select (select (store (store (store .cse17 |c_create_sub_list_insert_sub_~sub~0#1.base| v_ArrVal_4306) .cse18 v_ArrVal_4305) |v_create_sub_list_insert_sub_~sub~0#1.base_125| v_ArrVal_4287) |c_create_sub_list_~sub#1.base|) .cse19)))) (or (not (= (select |c_#valid| |v_create_sub_list_insert_sub_~sub~0#1.base_125|) (_ bv0 1))) (not (bvule .cse15 (select .cse104 |c_create_sub_list_~sub#1.base|))) (= |v_create_sub_list_insert_sub_~sub~0#1.base_125| |c_create_sub_list_~sub#1.base|) (bvule (bvadd v_arrayElimCell_487 (_ bv4 32)) .cse105) (bvule (bvadd v_arrayElimCell_488 (_ bv4 32)) .cse105)))))) .cse70 (forall ((|v_create_sub_list_insert_sub_~sub~0#1.base_125| (_ BitVec 32))) (let ((.cse107 (store |c_#length| |v_create_sub_list_insert_sub_~sub~0#1.base_125| (_ bv12 32)))) (or (not (= (select |c_#valid| |v_create_sub_list_insert_sub_~sub~0#1.base_125|) (_ bv0 1))) (forall ((v_arrayElimCell_487 (_ BitVec 32)) (v_ArrVal_4306 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4305 (Array (_ BitVec 32) (_ BitVec 32))) (v_arrayElimCell_490 (_ BitVec 32)) (v_ArrVal_4287 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse106 (select .cse107 (select (select (store (store (store .cse17 |c_create_sub_list_insert_sub_~sub~0#1.base| v_ArrVal_4306) .cse18 v_ArrVal_4305) |v_create_sub_list_insert_sub_~sub~0#1.base_125| v_ArrVal_4287) |c_create_sub_list_~sub#1.base|) .cse19)))) (or (bvule (bvadd v_arrayElimCell_490 (_ bv4 32)) .cse106) (bvule (bvadd v_arrayElimCell_487 (_ bv4 32)) .cse106) (forall ((v_arrayElimCell_488 (_ BitVec 32))) (bvule (bvadd v_arrayElimCell_488 (_ bv4 32)) .cse106))))) (not (bvule .cse15 (select .cse107 |c_create_sub_list_~sub#1.base|))) (= |v_create_sub_list_insert_sub_~sub~0#1.base_125| |c_create_sub_list_~sub#1.base|))))) .cse63)) (.cse2 (store |c_#length| |c_create_sub_list_~sub#1.base| (_ bv12 32))) (.cse44 (or (and .cse101 .cse102) .cse5)) (.cse45 (or .cse103 .cse5 .cse20)) (.cse47 (or (and .cse101 .cse7 .cse34 .cse35 .cse100 .cse102 .cse11) .cse5)) (.cse49 (or (let ((.cse99 (and .cse60 .cse61 .cse100))) (and (or .cse5 (forall ((v_arrayElimCell_487 (_ BitVec 32)) (v_arrayElimCell_489 (_ BitVec 32)) (v_arrayElimCell_488 (_ BitVec 32)) (v_ArrVal_4306 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4305 (Array (_ BitVec 32) (_ BitVec 32))) (|v_create_sub_list_insert_sub_~sub~0#1.base_125| (_ BitVec 32)) (v_ArrVal_4287 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse98 (store |c_#length| |v_create_sub_list_insert_sub_~sub~0#1.base_125| (_ bv12 32)))) (let ((.cse97 (select .cse98 (select (select (store (store (store .cse17 |c_create_sub_list_insert_sub_~sub~0#1.base| v_ArrVal_4306) .cse18 v_ArrVal_4305) |v_create_sub_list_insert_sub_~sub~0#1.base_125| v_ArrVal_4287) |c_create_sub_list_~sub#1.base|) .cse19)))) (or (not (= (select |c_#valid| |v_create_sub_list_insert_sub_~sub~0#1.base_125|) (_ bv0 1))) (bvule (bvadd v_arrayElimCell_489 (_ bv4 32)) .cse97) (not (bvule .cse15 (select .cse98 |c_create_sub_list_~sub#1.base|))) (bvule (bvadd v_arrayElimCell_487 (_ bv4 32)) .cse97) (bvule (bvadd v_arrayElimCell_488 (_ bv4 32)) .cse97)))))) .cse60 .cse61 (or .cse5 .cse99) .cse100 (or .cse99 .cse62))) .cse63)) (.cse50 (or (forall ((v_arrayElimCell_487 (_ BitVec 32)) (v_ArrVal_4306 (Array (_ BitVec 32) (_ BitVec 32))) (|v_create_sub_list_insert_sub_~sub~0#1.base_125| (_ BitVec 32)) (v_ArrVal_4305 (Array (_ BitVec 32) (_ BitVec 32))) (v_arrayElimCell_490 (_ BitVec 32)) (v_ArrVal_4287 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse96 (store |c_#length| |v_create_sub_list_insert_sub_~sub~0#1.base_125| (_ bv12 32)))) (let ((.cse95 (select .cse96 (select (select (store (store (store .cse17 |c_create_sub_list_insert_sub_~sub~0#1.base| v_ArrVal_4306) .cse18 v_ArrVal_4305) |v_create_sub_list_insert_sub_~sub~0#1.base_125| v_ArrVal_4287) |c_create_sub_list_~sub#1.base|) .cse19)))) (or (not (= (select |c_#valid| |v_create_sub_list_insert_sub_~sub~0#1.base_125|) (_ bv0 1))) (bvule (bvadd v_arrayElimCell_490 (_ bv4 32)) .cse95) (not (bvule .cse15 (select .cse96 |c_create_sub_list_~sub#1.base|))) (= |v_create_sub_list_insert_sub_~sub~0#1.base_125| |c_create_sub_list_~sub#1.base|) (bvule (bvadd v_arrayElimCell_487 (_ bv4 32)) .cse95))))) .cse20)) (.cse22 (= |c_create_sub_list_insert_sub_~head#1.offset| |c_create_sub_list_~sub#1.offset|)) (.cse0 (not (bvule .cse15 (_ bv12 32)))) (.cse1 (not (= (select |c_#valid| |c_create_sub_list_~sub#1.base|) (_ bv0 1)))) (.cse38 (or (and .cse36 (or .cse20 .cse94) .cse70) .cse62)) (.cse6 (forall ((|v_create_sub_list_insert_sub_~sub~0#1.base_125| (_ BitVec 32))) (let ((.cse92 (store |c_#length| |v_create_sub_list_insert_sub_~sub~0#1.base_125| (_ bv12 32)))) (or (not (= (select |c_#valid| |v_create_sub_list_insert_sub_~sub~0#1.base_125|) (_ bv0 1))) (not (bvule .cse15 (select .cse92 |c_create_sub_list_~sub#1.base|))) (forall ((v_arrayElimCell_489 (_ BitVec 32)) (v_ArrVal_4306 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4305 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4287 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse93 (select .cse92 (select (select (store (store (store .cse17 |c_create_sub_list_insert_sub_~sub~0#1.base| v_ArrVal_4306) .cse18 v_ArrVal_4305) |v_create_sub_list_insert_sub_~sub~0#1.base_125| v_ArrVal_4287) |c_create_sub_list_~sub#1.base|) .cse19)))) (or (bvule .cse13 .cse93) (bvule (bvadd v_arrayElimCell_489 (_ bv4 32)) .cse93) (forall ((v_arrayElimCell_488 (_ BitVec 32))) (bvule (bvadd v_arrayElimCell_488 (_ bv4 32)) .cse93))))))))) (.cse8 (or (forall ((v_arrayElimCell_489 (_ BitVec 32)) (v_ArrVal_4306 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4305 (Array (_ BitVec 32) (_ BitVec 32))) (|v_create_sub_list_insert_sub_~sub~0#1.base_125| (_ BitVec 32)) (v_ArrVal_4287 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse91 (store |c_#length| |v_create_sub_list_insert_sub_~sub~0#1.base_125| (_ bv12 32)))) (let ((.cse90 (select .cse91 (select (select (store (store (store .cse17 |c_create_sub_list_insert_sub_~sub~0#1.base| v_ArrVal_4306) .cse18 v_ArrVal_4305) |v_create_sub_list_insert_sub_~sub~0#1.base_125| v_ArrVal_4287) |c_create_sub_list_~sub#1.base|) .cse19)))) (or (not (= (select |c_#valid| |v_create_sub_list_insert_sub_~sub~0#1.base_125|) (_ bv0 1))) (bvule .cse13 .cse90) (bvule (bvadd v_arrayElimCell_489 (_ bv4 32)) .cse90) (not (bvule .cse15 (select .cse91 |c_create_sub_list_~sub#1.base|))))))) .cse20)) (.cse3 (or (forall ((v_arrayElimCell_489 (_ BitVec 32)) (v_ArrVal_4306 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4305 (Array (_ BitVec 32) (_ BitVec 32))) (|v_create_sub_list_insert_sub_~sub~0#1.base_125| (_ BitVec 32)) (v_arrayElimCell_490 (_ BitVec 32)) (v_ArrVal_4287 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse89 (store |c_#length| |v_create_sub_list_insert_sub_~sub~0#1.base_125| (_ bv12 32)))) (let ((.cse88 (select .cse89 (select (select (store (store (store .cse17 |c_create_sub_list_insert_sub_~sub~0#1.base| v_ArrVal_4306) .cse18 v_ArrVal_4305) |v_create_sub_list_insert_sub_~sub~0#1.base_125| v_ArrVal_4287) |c_create_sub_list_~sub#1.base|) .cse19)))) (or (not (= (select |c_#valid| |v_create_sub_list_insert_sub_~sub~0#1.base_125|) (_ bv0 1))) (bvule .cse13 .cse88) (bvule (bvadd v_arrayElimCell_490 (_ bv4 32)) .cse88) (bvule (bvadd v_arrayElimCell_489 (_ bv4 32)) .cse88) (not (bvule .cse15 (select .cse89 |c_create_sub_list_~sub#1.base|))))))) .cse20)) (.cse64 (forall ((|v_create_sub_list_insert_sub_~sub~0#1.base_125| (_ BitVec 32))) (let ((.cse87 (store |c_#length| |v_create_sub_list_insert_sub_~sub~0#1.base_125| (_ bv12 32)))) (or (not (= (select |c_#valid| |v_create_sub_list_insert_sub_~sub~0#1.base_125|) (_ bv0 1))) (forall ((v_arrayElimCell_489 (_ BitVec 32)) (v_ArrVal_4306 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4305 (Array (_ BitVec 32) (_ BitVec 32))) (v_arrayElimCell_490 (_ BitVec 32)) (v_ArrVal_4287 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse86 (select .cse87 (select (select (store (store (store .cse17 |c_create_sub_list_insert_sub_~sub~0#1.base| v_ArrVal_4306) .cse18 v_ArrVal_4305) |v_create_sub_list_insert_sub_~sub~0#1.base_125| v_ArrVal_4287) |c_create_sub_list_~sub#1.base|) .cse19)))) (or (bvule .cse13 .cse86) (bvule (bvadd v_arrayElimCell_490 (_ bv4 32)) .cse86) (bvule (bvadd v_arrayElimCell_489 (_ bv4 32)) .cse86) (forall ((v_arrayElimCell_488 (_ BitVec 32))) (bvule (bvadd v_arrayElimCell_488 (_ bv4 32)) .cse86))))) (not (bvule .cse15 (select .cse87 |c_create_sub_list_~sub#1.base|))) (= |v_create_sub_list_insert_sub_~sub~0#1.base_125| |c_create_sub_list_~sub#1.base|))))) (.cse41 (or .cse63 (forall ((v_arrayElimCell_489 (_ BitVec 32)) (v_arrayElimCell_488 (_ BitVec 32)) (v_ArrVal_4306 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4305 (Array (_ BitVec 32) (_ BitVec 32))) (|v_create_sub_list_insert_sub_~sub~0#1.base_125| (_ BitVec 32)) (v_arrayElimCell_490 (_ BitVec 32)) (v_ArrVal_4287 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse85 (store |c_#length| |v_create_sub_list_insert_sub_~sub~0#1.base_125| (_ bv12 32)))) (let ((.cse84 (select .cse85 (select (select (store (store (store .cse17 |c_create_sub_list_insert_sub_~sub~0#1.base| v_ArrVal_4306) .cse18 v_ArrVal_4305) |v_create_sub_list_insert_sub_~sub~0#1.base_125| v_ArrVal_4287) |c_create_sub_list_~sub#1.base|) .cse19)))) (or (not (= (select |c_#valid| |v_create_sub_list_insert_sub_~sub~0#1.base_125|) (_ bv0 1))) (bvule (bvadd v_arrayElimCell_490 (_ bv4 32)) .cse84) (bvule (bvadd v_arrayElimCell_489 (_ bv4 32)) .cse84) (not (bvule .cse15 (select .cse85 |c_create_sub_list_~sub#1.base|))) (= |v_create_sub_list_insert_sub_~sub~0#1.base_125| |c_create_sub_list_~sub#1.base|) (bvule (bvadd v_arrayElimCell_488 (_ bv4 32)) .cse84))))))) (.cse9 (forall ((|v_create_sub_list_insert_sub_~sub~0#1.base_125| (_ BitVec 32))) (let ((.cse83 (store |c_#length| |v_create_sub_list_insert_sub_~sub~0#1.base_125| (_ bv12 32)))) (or (not (= (select |c_#valid| |v_create_sub_list_insert_sub_~sub~0#1.base_125|) (_ bv0 1))) (forall ((v_arrayElimCell_489 (_ BitVec 32)) (v_ArrVal_4306 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4305 (Array (_ BitVec 32) (_ BitVec 32))) (v_arrayElimCell_490 (_ BitVec 32)) (v_ArrVal_4287 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse82 (select .cse83 (select (select (store (store (store .cse17 |c_create_sub_list_insert_sub_~sub~0#1.base| v_ArrVal_4306) .cse18 v_ArrVal_4305) |v_create_sub_list_insert_sub_~sub~0#1.base_125| v_ArrVal_4287) |c_create_sub_list_~sub#1.base|) .cse19)))) (or (bvule .cse13 .cse82) (bvule (bvadd v_arrayElimCell_490 (_ bv4 32)) .cse82) (bvule (bvadd v_arrayElimCell_489 (_ bv4 32)) .cse82) (forall ((v_arrayElimCell_488 (_ BitVec 32))) (bvule (bvadd v_arrayElimCell_488 (_ bv4 32)) .cse82))))) (not (bvule .cse15 (select .cse83 |c_create_sub_list_~sub#1.base|))))))) (.cse51 (= |c_create_sub_list_insert_sub_~head#1.base| |c_create_sub_list_~sub#1.base|)) (.cse23 (forall ((|v_create_sub_list_insert_sub_~sub~0#1.base_125| (_ BitVec 32))) (or (not (= (select |c_#valid| |v_create_sub_list_insert_sub_~sub~0#1.base_125|) (_ bv0 1))) (not (bvule .cse15 (select (store |c_#length| |v_create_sub_list_insert_sub_~sub~0#1.base_125| (_ bv12 32)) |c_create_sub_list_~sub#1.base|)))))) (.cse55 (forall ((v_arrayElimCell_489 (_ BitVec 32)) (v_ArrVal_4306 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4305 (Array (_ BitVec 32) (_ BitVec 32))) (|v_create_sub_list_insert_sub_~sub~0#1.base_125| (_ BitVec 32)) (v_ArrVal_4287 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse81 (store |c_#length| |v_create_sub_list_insert_sub_~sub~0#1.base_125| (_ bv12 32)))) (let ((.cse80 (select .cse81 (select (select (store (store (store .cse17 |c_create_sub_list_insert_sub_~sub~0#1.base| v_ArrVal_4306) .cse18 v_ArrVal_4305) |v_create_sub_list_insert_sub_~sub~0#1.base_125| v_ArrVal_4287) |c_create_sub_list_~sub#1.base|) .cse19)))) (or (not (= (select |c_#valid| |v_create_sub_list_insert_sub_~sub~0#1.base_125|) (_ bv0 1))) (bvule .cse13 .cse80) (bvule (bvadd v_arrayElimCell_489 (_ bv4 32)) .cse80) (not (bvule .cse15 (select .cse81 |c_create_sub_list_~sub#1.base|))) (= |v_create_sub_list_insert_sub_~sub~0#1.base_125| |c_create_sub_list_~sub#1.base|)))))) (.cse48 (or (and .cse78 .cse79) .cse62))) (and (or .cse0 .cse1 (forall ((v_arrayElimCell_489 (_ BitVec 32)) (v_arrayElimCell_492 (_ BitVec 32))) (bvule (bvadd v_arrayElimCell_489 (_ bv4 32)) (select .cse2 v_arrayElimCell_492)))) .cse3 .cse4 (or .cse5 (and .cse3 .cse6 .cse7 .cse8 .cse9 .cse10 .cse11)) .cse12 (or (forall ((v_ArrVal_4306 (Array (_ BitVec 32) (_ BitVec 32))) (|v_create_sub_list_insert_sub_~sub~0#1.base_125| (_ BitVec 32)) (v_ArrVal_4305 (Array (_ BitVec 32) (_ BitVec 32))) (v_arrayElimCell_490 (_ BitVec 32)) (v_ArrVal_4287 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse16 (store |c_#length| |v_create_sub_list_insert_sub_~sub~0#1.base_125| (_ bv12 32)))) (let ((.cse14 (select .cse16 (select (select (store (store (store .cse17 |c_create_sub_list_insert_sub_~sub~0#1.base| v_ArrVal_4306) .cse18 v_ArrVal_4305) |v_create_sub_list_insert_sub_~sub~0#1.base_125| v_ArrVal_4287) |c_create_sub_list_~sub#1.base|) .cse19)))) (or (not (= (select |c_#valid| |v_create_sub_list_insert_sub_~sub~0#1.base_125|) (_ bv0 1))) (bvule .cse13 .cse14) (bvule (bvadd v_arrayElimCell_490 (_ bv4 32)) .cse14) (not (bvule .cse15 (select .cse16 |c_create_sub_list_~sub#1.base|))) (= |v_create_sub_list_insert_sub_~sub~0#1.base_125| |c_create_sub_list_~sub#1.base|))))) .cse20) .cse21 (or .cse22 .cse23) .cse24 (or (and (forall ((|v_create_sub_list_insert_sub_~sub~0#1.base_125| (_ BitVec 32))) (let ((.cse26 (store |c_#length| |v_create_sub_list_insert_sub_~sub~0#1.base_125| (_ bv12 32)))) (or (not (= (select |c_#valid| |v_create_sub_list_insert_sub_~sub~0#1.base_125|) (_ bv0 1))) (forall ((v_arrayElimCell_489 (_ BitVec 32)) (v_ArrVal_4306 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4305 (Array (_ BitVec 32) (_ BitVec 32))) (v_arrayElimCell_490 (_ BitVec 32)) (v_ArrVal_4287 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse25 (select .cse26 (select (select (store (store (store .cse17 |c_create_sub_list_insert_sub_~sub~0#1.base| v_ArrVal_4306) .cse18 v_ArrVal_4305) |v_create_sub_list_insert_sub_~sub~0#1.base_125| v_ArrVal_4287) |c_create_sub_list_~sub#1.base|) .cse19)))) (or (bvule .cse13 .cse25) (bvule (bvadd v_arrayElimCell_490 (_ bv4 32)) .cse25) (bvule (bvadd v_arrayElimCell_489 (_ bv4 32)) .cse25)))) (not (bvule .cse15 (select .cse26 |c_create_sub_list_~sub#1.base|))) (= |v_create_sub_list_insert_sub_~sub~0#1.base_125| |c_create_sub_list_~sub#1.base|)))) .cse27) .cse20) (or (and .cse28 .cse4 .cse29 .cse12 .cse30 .cse21 .cse24 .cse31 .cse32 .cse33 .cse7 .cse34 .cse35 .cse36 .cse37 .cse38 .cse39 .cse40 .cse41 .cse42 .cse43 .cse44 .cse45 .cse46 .cse47 (or .cse0 .cse1 (forall ((v_arrayElimCell_489 (_ BitVec 32)) (v_arrayElimCell_491 (_ BitVec 32))) (bvule (bvadd v_arrayElimCell_489 (_ bv4 32)) (select .cse2 v_arrayElimCell_491)))) .cse48 .cse49 .cse50 .cse11) .cse51) .cse31 (or (and .cse52 (forall ((|v_create_sub_list_insert_sub_~sub~0#1.base_125| (_ BitVec 32))) (let ((.cse54 (store |c_#length| |v_create_sub_list_insert_sub_~sub~0#1.base_125| (_ bv12 32)))) (or (not (= (select |c_#valid| |v_create_sub_list_insert_sub_~sub~0#1.base_125|) (_ bv0 1))) (forall ((v_arrayElimCell_489 (_ BitVec 32)) (v_ArrVal_4306 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4305 (Array (_ BitVec 32) (_ BitVec 32))) (v_arrayElimCell_490 (_ BitVec 32)) (v_ArrVal_4287 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse53 (select .cse54 (select (select (store (store (store .cse17 |c_create_sub_list_insert_sub_~sub~0#1.base| v_ArrVal_4306) .cse18 v_ArrVal_4305) |v_create_sub_list_insert_sub_~sub~0#1.base_125| v_ArrVal_4287) |c_create_sub_list_~sub#1.base|) .cse19)))) (or (bvule .cse13 .cse53) (bvule (bvadd v_arrayElimCell_490 (_ bv4 32)) .cse53) (bvule (bvadd v_arrayElimCell_489 (_ bv4 32)) .cse53)))) (not (bvule .cse15 (select .cse54 |c_create_sub_list_~sub#1.base|))))))) .cse20) .cse33 (or .cse5 .cse55 .cse20) .cse56 .cse7 (or (let ((.cse57 (and .cse60 .cse61 .cse10))) (and (or .cse5 .cse57) (or .cse5 (forall ((v_arrayElimCell_489 (_ BitVec 32)) (v_arrayElimCell_488 (_ BitVec 32)) (v_ArrVal_4306 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4305 (Array (_ BitVec 32) (_ BitVec 32))) (|v_create_sub_list_insert_sub_~sub~0#1.base_125| (_ BitVec 32)) (v_ArrVal_4287 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse59 (store |c_#length| |v_create_sub_list_insert_sub_~sub~0#1.base_125| (_ bv12 32)))) (let ((.cse58 (select .cse59 (select (select (store (store (store .cse17 |c_create_sub_list_insert_sub_~sub~0#1.base| v_ArrVal_4306) .cse18 v_ArrVal_4305) |v_create_sub_list_insert_sub_~sub~0#1.base_125| v_ArrVal_4287) |c_create_sub_list_~sub#1.base|) .cse19)))) (or (not (= (select |c_#valid| |v_create_sub_list_insert_sub_~sub~0#1.base_125|) (_ bv0 1))) (bvule .cse13 .cse58) (bvule (bvadd v_arrayElimCell_489 (_ bv4 32)) .cse58) (not (bvule .cse15 (select .cse59 |c_create_sub_list_~sub#1.base|))) (bvule (bvadd v_arrayElimCell_488 (_ bv4 32)) .cse58)))))) .cse60 .cse61 (or .cse57 .cse62) .cse10)) .cse63) (or .cse5 (and .cse56 .cse64)) (or (and .cse65 (forall ((|v_create_sub_list_insert_sub_~sub~0#1.base_125| (_ BitVec 32))) (let ((.cse67 (store |c_#length| |v_create_sub_list_insert_sub_~sub~0#1.base_125| (_ bv12 32)))) (or (not (= (select |c_#valid| |v_create_sub_list_insert_sub_~sub~0#1.base_125|) (_ bv0 1))) (forall ((v_ArrVal_4306 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4305 (Array (_ BitVec 32) (_ BitVec 32))) (v_arrayElimCell_490 (_ BitVec 32)) (v_ArrVal_4287 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse66 (select .cse67 (select (select (store (store (store .cse17 |c_create_sub_list_insert_sub_~sub~0#1.base| v_ArrVal_4306) .cse18 v_ArrVal_4305) |v_create_sub_list_insert_sub_~sub~0#1.base_125| v_ArrVal_4287) |c_create_sub_list_~sub#1.base|) .cse19)))) (or (bvule .cse13 .cse66) (bvule (bvadd v_arrayElimCell_490 (_ bv4 32)) .cse66) (forall ((v_arrayElimCell_488 (_ BitVec 32))) (bvule (bvadd v_arrayElimCell_488 (_ bv4 32)) .cse66))))) (not (bvule .cse15 (select .cse67 |c_create_sub_list_~sub#1.base|))) (= |v_create_sub_list_insert_sub_~sub~0#1.base_125| |c_create_sub_list_~sub#1.base|)))) (or .cse5 (forall ((v_arrayElimCell_488 (_ BitVec 32)) (v_ArrVal_4306 (Array (_ BitVec 32) (_ BitVec 32))) (|v_create_sub_list_insert_sub_~sub~0#1.base_125| (_ BitVec 32)) (v_ArrVal_4305 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4287 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse69 (store |c_#length| |v_create_sub_list_insert_sub_~sub~0#1.base_125| (_ bv12 32)))) (let ((.cse68 (select .cse69 (select (select (store (store (store .cse17 |c_create_sub_list_insert_sub_~sub~0#1.base| v_ArrVal_4306) .cse18 v_ArrVal_4305) |v_create_sub_list_insert_sub_~sub~0#1.base_125| v_ArrVal_4287) |c_create_sub_list_~sub#1.base|) .cse19)))) (or (not (= (select |c_#valid| |v_create_sub_list_insert_sub_~sub~0#1.base_125|) (_ bv0 1))) (bvule .cse13 .cse68) (not (bvule .cse15 (select .cse69 |c_create_sub_list_~sub#1.base|))) (= |v_create_sub_list_insert_sub_~sub~0#1.base_125| |c_create_sub_list_~sub#1.base|) (bvule (bvadd v_arrayElimCell_488 (_ bv4 32)) .cse68)))))) .cse70) .cse63) (or (and .cse28 .cse4 .cse29 .cse12 .cse30 .cse21 .cse24 .cse31 .cse32 .cse33 .cse7 .cse34 .cse35 .cse36 .cse37 .cse38 .cse39 .cse40 .cse41 .cse42 .cse43 (or (forall ((v_arrayElimCell_489 (_ BitVec 32)) (v_arrayElimCell_493 (_ BitVec 32))) (bvule (bvadd v_arrayElimCell_489 (_ bv4 32)) (select .cse2 v_arrayElimCell_493))) .cse0 .cse1) .cse44 .cse45 .cse46 .cse47 .cse48 .cse49 .cse50 .cse11) .cse22) (or .cse62 .cse23) (or .cse0 .cse1) .cse36 (or .cse23 (bvule (bvadd (_ bv4 32) |c_create_sub_list_insert_sub_~sub~0#1.offset|) .cse13)) .cse38 (or .cse5 (and .cse6 .cse8)) (or .cse5 (and .cse36 (forall ((|v_create_sub_list_insert_sub_~sub~0#1.base_125| (_ BitVec 32))) (let ((.cse72 (store |c_#length| |v_create_sub_list_insert_sub_~sub~0#1.base_125| (_ bv12 32)))) (or (forall ((v_arrayElimCell_488 (_ BitVec 32)) (v_ArrVal_4306 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4305 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4287 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse71 (select .cse72 (select (select (store (store (store .cse17 |c_create_sub_list_insert_sub_~sub~0#1.base| v_ArrVal_4306) .cse18 v_ArrVal_4305) |v_create_sub_list_insert_sub_~sub~0#1.base_125| v_ArrVal_4287) |c_create_sub_list_~sub#1.base|) .cse19)))) (or (bvule .cse13 .cse71) (bvule (bvadd v_arrayElimCell_488 (_ bv4 32)) .cse71)))) (not (= (select |c_#valid| |v_create_sub_list_insert_sub_~sub~0#1.base_125|) (_ bv0 1))) (not (bvule .cse15 (select .cse72 |c_create_sub_list_~sub#1.base|))) (= |v_create_sub_list_insert_sub_~sub~0#1.base_125| |c_create_sub_list_~sub#1.base|)))) (or (forall ((v_ArrVal_4306 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4305 (Array (_ BitVec 32) (_ BitVec 32))) (|v_create_sub_list_insert_sub_~sub~0#1.base_125| (_ BitVec 32)) (v_ArrVal_4287 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse73 (store |c_#length| |v_create_sub_list_insert_sub_~sub~0#1.base_125| (_ bv12 32)))) (or (not (= (select |c_#valid| |v_create_sub_list_insert_sub_~sub~0#1.base_125|) (_ bv0 1))) (bvule .cse13 (select .cse73 (select (select (store (store (store .cse17 |c_create_sub_list_insert_sub_~sub~0#1.base| v_ArrVal_4306) .cse18 v_ArrVal_4305) |v_create_sub_list_insert_sub_~sub~0#1.base_125| v_ArrVal_4287) |c_create_sub_list_~sub#1.base|) .cse19))) (not (bvule .cse15 (select .cse73 |c_create_sub_list_~sub#1.base|))) (= |v_create_sub_list_insert_sub_~sub~0#1.base_125| |c_create_sub_list_~sub#1.base|)))) .cse20))) (or (and .cse3 .cse9) .cse5) (or .cse63 .cse23) .cse64 .cse41 .cse9 (forall ((|v_create_sub_list_insert_sub_~sub~0#1.base_125| (_ BitVec 32))) (let ((.cse75 (store |c_#length| |v_create_sub_list_insert_sub_~sub~0#1.base_125| (_ bv12 32)))) (or (not (= (select |c_#valid| |v_create_sub_list_insert_sub_~sub~0#1.base_125|) (_ bv0 1))) (forall ((v_arrayElimCell_488 (_ BitVec 32)) (v_ArrVal_4306 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4305 (Array (_ BitVec 32) (_ BitVec 32))) (v_arrayElimCell_490 (_ BitVec 32)) (v_ArrVal_4287 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse74 (select .cse75 (select (select (store (store (store .cse17 |c_create_sub_list_insert_sub_~sub~0#1.base| v_ArrVal_4306) .cse18 v_ArrVal_4305) |v_create_sub_list_insert_sub_~sub~0#1.base_125| v_ArrVal_4287) |c_create_sub_list_~sub#1.base|) .cse19)))) (or (bvule .cse13 .cse74) (bvule (bvadd v_arrayElimCell_490 (_ bv4 32)) .cse74) (bvule (bvadd v_arrayElimCell_488 (_ bv4 32)) .cse74)))) (not (bvule .cse15 (select .cse75 |c_create_sub_list_~sub#1.base|))) (= |v_create_sub_list_insert_sub_~sub~0#1.base_125| |c_create_sub_list_~sub#1.base|)))) (or .cse51 .cse23) (or .cse5 (and (or .cse55 .cse20) (forall ((|v_create_sub_list_insert_sub_~sub~0#1.base_125| (_ BitVec 32))) (let ((.cse76 (store |c_#length| |v_create_sub_list_insert_sub_~sub~0#1.base_125| (_ bv12 32)))) (or (not (= (select |c_#valid| |v_create_sub_list_insert_sub_~sub~0#1.base_125|) (_ bv0 1))) (not (bvule .cse15 (select .cse76 |c_create_sub_list_~sub#1.base|))) (= |v_create_sub_list_insert_sub_~sub~0#1.base_125| |c_create_sub_list_~sub#1.base|) (forall ((v_arrayElimCell_489 (_ BitVec 32)) (v_ArrVal_4306 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4305 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4287 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse77 (select .cse76 (select (select (store (store (store .cse17 |c_create_sub_list_insert_sub_~sub~0#1.base| v_ArrVal_4306) .cse18 v_ArrVal_4305) |v_create_sub_list_insert_sub_~sub~0#1.base_125| v_ArrVal_4287) |c_create_sub_list_~sub#1.base|) .cse19)))) (or (bvule .cse13 .cse77) (bvule (bvadd v_arrayElimCell_489 (_ bv4 32)) .cse77) (forall ((v_arrayElimCell_488 (_ BitVec 32))) (bvule (bvadd v_arrayElimCell_488 (_ bv4 32)) .cse77)))))))))) .cse48 .cse11))))))) is different from true [2022-11-16 16:38:07,857 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [123517451] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 16:38:07,857 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [173257671] [2022-11-16 16:38:07,857 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 16:38:07,857 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 16:38:07,858 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6289e30a-84ce-488a-9a79-4a100fa2c467/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 16:38:07,861 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6289e30a-84ce-488a-9a79-4a100fa2c467/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 16:38:07,875 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6289e30a-84ce-488a-9a79-4a100fa2c467/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process [2022-11-16 16:38:09,180 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 16:38:09,180 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 16:38:09,191 INFO L263 TraceCheckSpWp]: Trace formula consists of 438 conjuncts, 131 conjunts are in the unsatisfiable core [2022-11-16 16:38:09,197 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 16:38:09,208 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 [2022-11-16 16:38:09,224 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 [2022-11-16 16:38:09,299 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 [2022-11-16 16:38:09,316 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 [2022-11-16 16:38:09,716 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 [2022-11-16 16:38:09,728 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:38:09,728 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 21 treesize of output 20 [2022-11-16 16:38:09,740 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 16:38:09,740 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 [2022-11-16 16:38:09,785 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-16 16:38:09,786 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 [2022-11-16 16:38:09,861 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 [2022-11-16 16:38:09,873 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 [2022-11-16 16:38:11,704 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 65 treesize of output 36 [2022-11-16 16:38:11,816 INFO L321 Elim1Store]: treesize reduction 46, result has 19.3 percent of original size [2022-11-16 16:38:11,816 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 83 treesize of output 117 [2022-11-16 16:38:11,823 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 121 treesize of output 89 [2022-11-16 16:38:11,832 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 42 treesize of output 24 [2022-11-16 16:38:11,844 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 87 treesize of output 30 [2022-11-16 16:38:11,904 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 [2022-11-16 16:38:11,978 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-16 16:38:11,979 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 [2022-11-16 16:38:12,104 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 17 treesize of output 19 [2022-11-16 16:38:12,122 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 8 treesize of output 4 [2022-11-16 16:38:13,815 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 [2022-11-16 16:38:14,452 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-16 16:38:14,452 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 16 treesize of output 22 [2022-11-16 16:38:14,473 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 3 [2022-11-16 16:38:15,217 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-16 16:38:15,217 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 20 treesize of output 26 [2022-11-16 16:38:15,874 INFO L321 Elim1Store]: treesize reduction 17, result has 46.9 percent of original size [2022-11-16 16:38:15,874 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 26 treesize of output 38 [2022-11-16 16:38:15,891 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 3 [2022-11-16 16:38:16,666 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 23 [2022-11-16 16:38:16,738 INFO L321 Elim1Store]: treesize reduction 24, result has 38.5 percent of original size [2022-11-16 16:38:16,739 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 2 new quantified variables, introduced 2 case distinctions, treesize of input 50 treesize of output 55 [2022-11-16 16:38:16,893 INFO L321 Elim1Store]: treesize reduction 19, result has 47.2 percent of original size [2022-11-16 16:38:16,893 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 1 case distinctions, treesize of input 16 treesize of output 26 [2022-11-16 16:38:16,952 INFO L321 Elim1Store]: treesize reduction 12, result has 52.0 percent of original size [2022-11-16 16:38:16,952 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 24 treesize of output 26 [2022-11-16 16:38:17,451 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-16 16:38:17,462 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 32 treesize of output 30 [2022-11-16 16:38:18,746 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 25 treesize of output 13 [2022-11-16 16:38:18,768 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 15 treesize of output 7 [2022-11-16 16:38:19,558 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 3 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 16:38:19,558 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 16:38:21,538 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse0 (bvadd (_ bv4 32) |c_create_sub_list_insert_sub_~head#1.offset|))) (and (forall ((v_ArrVal_4475 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4474 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv4 32) (select (select (store |c_#memory_$Pointer$.offset| |c_create_sub_list_insert_sub_~sub~0#1.base| v_ArrVal_4474) |c_create_sub_list_insert_sub_~head#1.base|) .cse0)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_create_sub_list_insert_sub_~sub~0#1.base| v_ArrVal_4475) |c_create_sub_list_insert_sub_~head#1.base|) .cse0)))) (forall ((v_ArrVal_4474 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (select (select (store |c_#memory_$Pointer$.offset| |c_create_sub_list_insert_sub_~sub~0#1.base| v_ArrVal_4474) |c_create_sub_list_insert_sub_~head#1.base|) .cse0))) (bvule .cse1 (bvadd (_ bv4 32) .cse1)))))) is different from false [2022-11-16 16:38:24,836 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 16:38:24,836 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 74 treesize of output 75 [2022-11-16 16:38:24,897 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 16:38:24,897 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 922 treesize of output 915 [2022-11-16 16:38:24,913 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 898 treesize of output 866 [2022-11-16 16:38:24,928 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 866 treesize of output 850 [2022-11-16 16:38:24,960 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 429 treesize of output 421 [2022-11-16 16:38:33,741 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 14 treesize of output 10 [2022-11-16 16:38:33,756 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 29 treesize of output 21 [2022-11-16 16:38:33,857 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 14 treesize of output 10 [2022-11-16 16:38:34,141 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 14 treesize of output 10 [2022-11-16 16:38:34,157 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 29 treesize of output 21 [2022-11-16 16:38:34,397 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 29 treesize of output 21 [2022-11-16 16:38:34,578 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 43 treesize of output 31 [2022-11-16 16:38:34,952 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 14 treesize of output 10 [2022-11-16 16:38:34,980 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 14 treesize of output 10 [2022-11-16 16:38:34,995 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 29 treesize of output 21 [2022-11-16 16:38:35,117 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 29 treesize of output 21 [2022-11-16 16:38:35,147 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 29 treesize of output 21 [2022-11-16 16:38:35,173 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 43 treesize of output 31 [2022-11-16 16:38:35,211 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 29 treesize of output 21 [2022-11-16 16:38:35,236 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 43 treesize of output 31 [2022-11-16 16:38:35,272 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 29 treesize of output 21 [2022-11-16 16:38:35,297 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 43 treesize of output 31 [2022-11-16 16:38:35,335 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 14 treesize of output 10 [2022-11-16 16:38:35,355 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 43 treesize of output 31 [2022-11-16 16:38:35,393 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 57 treesize of output 41 [2022-11-16 16:38:35,871 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 29 treesize of output 21 [2022-11-16 16:38:35,897 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 43 treesize of output 31 [2022-11-16 16:38:36,126 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 14 treesize of output 10 [2022-11-16 16:38:36,143 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 29 treesize of output 21 [2022-11-16 16:38:36,234 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 57 treesize of output 41 [2022-11-16 16:38:36,284 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 43 treesize of output 31 [2022-11-16 16:38:36,582 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 29 treesize of output 21 [2022-11-16 16:38:36,673 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 43 treesize of output 31 [2022-11-16 16:38:37,188 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 29 treesize of output 21 [2022-11-16 16:38:37,389 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 43 treesize of output 31 [2022-11-16 16:38:37,744 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 14 treesize of output 10 [2022-11-16 16:38:37,770 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 14 treesize of output 10 [2022-11-16 16:38:37,786 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 29 treesize of output 21 [2022-11-16 16:38:37,906 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 29 treesize of output 21 [2022-11-16 16:38:37,934 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 29 treesize of output 21 [2022-11-16 16:38:37,958 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 43 treesize of output 31 [2022-11-16 16:38:37,995 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 29 treesize of output 21 [2022-11-16 16:38:38,020 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 43 treesize of output 31 [2022-11-16 16:38:38,055 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 29 treesize of output 21 [2022-11-16 16:38:38,081 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 43 treesize of output 31 [2022-11-16 16:38:38,116 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 14 treesize of output 10 [2022-11-16 16:38:38,136 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 43 treesize of output 31 [2022-11-16 16:38:38,172 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 57 treesize of output 41 [2022-11-16 16:38:38,717 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 29 treesize of output 21 [2022-11-16 16:38:38,742 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 43 treesize of output 31 [2022-11-16 16:38:39,004 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 14 treesize of output 10 [2022-11-16 16:38:39,021 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 29 treesize of output 21 [2022-11-16 16:38:39,127 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 29 treesize of output 21 [2022-11-16 16:38:39,149 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 43 treesize of output 31 [2022-11-16 16:38:39,184 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 29 treesize of output 21 [2022-11-16 16:38:39,212 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 43 treesize of output 31 [2022-11-16 16:38:39,247 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 29 treesize of output 21 [2022-11-16 16:38:39,269 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 29 treesize of output 21 [2022-11-16 16:38:39,292 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 43 treesize of output 31 [2022-11-16 16:38:39,326 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 14 treesize of output 10 [2022-11-16 16:38:39,491 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 29 treesize of output 21 [2022-11-16 16:38:39,513 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 43 treesize of output 31 [2022-11-16 16:38:39,571 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 16:38:39,571 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 71 treesize of output 60 [2022-11-16 16:38:39,617 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 16:38:39,617 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 946 treesize of output 903 [2022-11-16 16:38:39,632 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 886 treesize of output 758 [2022-11-16 16:38:39,645 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 758 treesize of output 694 [2022-11-16 16:38:39,657 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 694 treesize of output 662 [2022-11-16 16:43:03,023 WARN L233 SmtUtils]: Spent 1.92m on a formula simplification. DAG size of input: 613 DAG size of output: 90 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 16:43:03,027 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [173257671] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 16:43:03,027 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 16:43:03,027 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31, 32] total 75 [2022-11-16 16:43:03,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193265992] [2022-11-16 16:43:03,027 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 16:43:03,028 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 76 states [2022-11-16 16:43:03,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-16 16:43:03,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2022-11-16 16:43:03,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=346, Invalid=8099, Unknown=119, NotChecked=366, Total=8930 [2022-11-16 16:43:03,031 INFO L87 Difference]: Start difference. First operand 259 states and 286 transitions. Second operand has 76 states, 73 states have (on average 1.5205479452054795) internal successors, (111), 67 states have internal predecessors, (111), 9 states have call successors, (9), 9 states have call predecessors, (9), 6 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6)