./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/memsafety/test-0102-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30fedb40-a0b9-4db9-90fc-082cefc5fb5f/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30fedb40-a0b9-4db9-90fc-082cefc5fb5f/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30fedb40-a0b9-4db9-90fc-082cefc5fb5f/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30fedb40-a0b9-4db9-90fc-082cefc5fb5f/bin/utaipan-gh47qXpMRh/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety/test-0102-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30fedb40-a0b9-4db9-90fc-082cefc5fb5f/bin/utaipan-gh47qXpMRh/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30fedb40-a0b9-4db9-90fc-082cefc5fb5f/bin/utaipan-gh47qXpMRh --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash d10910cb8c44ec8f982d35122d9e66670129ee7c874265953b685f7f63a30072 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-14 10:46:42,276 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 10:46:42,277 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 10:46:42,296 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 10:46:42,296 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 10:46:42,297 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 10:46:42,298 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 10:46:42,300 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 10:46:42,301 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 10:46:42,302 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 10:46:42,303 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 10:46:42,304 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 10:46:42,304 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 10:46:42,305 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 10:46:42,306 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 10:46:42,307 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 10:46:42,308 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 10:46:42,309 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 10:46:42,311 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 10:46:42,312 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 10:46:42,314 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 10:46:42,315 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 10:46:42,316 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 10:46:42,317 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 10:46:42,320 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 10:46:42,320 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 10:46:42,320 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 10:46:42,321 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 10:46:42,322 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 10:46:42,323 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 10:46:42,323 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 10:46:42,324 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 10:46:42,325 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 10:46:42,325 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 10:46:42,326 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 10:46:42,326 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 10:46:42,327 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 10:46:42,327 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 10:46:42,327 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 10:46:42,328 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 10:46:42,328 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 10:46:42,329 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30fedb40-a0b9-4db9-90fc-082cefc5fb5f/bin/utaipan-gh47qXpMRh/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2022-12-14 10:46:42,349 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 10:46:42,349 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 10:46:42,355 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 10:46:42,356 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 10:46:42,356 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 10:46:42,356 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 10:46:42,356 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 10:46:42,357 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 10:46:42,357 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 10:46:42,357 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 10:46:42,357 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 10:46:42,357 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 10:46:42,357 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 10:46:42,357 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 10:46:42,358 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 10:46:42,358 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 10:46:42,358 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 10:46:42,358 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 10:46:42,359 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-14 10:46:42,359 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-14 10:46:42,359 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 10:46:42,359 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 10:46:42,359 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-14 10:46:42,359 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 10:46:42,360 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 10:46:42,360 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 10:46:42,360 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-12-14 10:46:42,360 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-12-14 10:46:42,360 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-12-14 10:46:42,360 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 10:46:42,361 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-12-14 10:46:42,361 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 10:46:42,361 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 10:46:42,361 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 10:46:42,361 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 10:46:42,361 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 10:46:42,361 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 10:46:42,361 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 10:46:42,361 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 10:46:42,361 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 10:46:42,362 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 10:46:42,362 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 10:46:42,362 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_30fedb40-a0b9-4db9-90fc-082cefc5fb5f/bin/utaipan-gh47qXpMRh/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30fedb40-a0b9-4db9-90fc-082cefc5fb5f/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d10910cb8c44ec8f982d35122d9e66670129ee7c874265953b685f7f63a30072 [2022-12-14 10:46:42,532 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 10:46:42,550 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 10:46:42,553 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 10:46:42,554 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 10:46:42,555 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 10:46:42,555 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30fedb40-a0b9-4db9-90fc-082cefc5fb5f/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/memsafety/test-0102-2.i [2022-12-14 10:46:45,151 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 10:46:45,358 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 10:46:45,358 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30fedb40-a0b9-4db9-90fc-082cefc5fb5f/sv-benchmarks/c/memsafety/test-0102-2.i [2022-12-14 10:46:45,371 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30fedb40-a0b9-4db9-90fc-082cefc5fb5f/bin/utaipan-gh47qXpMRh/data/9b824123f/bd06dc6a7a6047118fa1b7cd2fdd7e6b/FLAGf4a9c2bcd [2022-12-14 10:46:45,723 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30fedb40-a0b9-4db9-90fc-082cefc5fb5f/bin/utaipan-gh47qXpMRh/data/9b824123f/bd06dc6a7a6047118fa1b7cd2fdd7e6b [2022-12-14 10:46:45,727 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 10:46:45,728 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 10:46:45,730 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 10:46:45,730 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 10:46:45,735 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 10:46:45,735 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 10:46:45" (1/1) ... [2022-12-14 10:46:45,736 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@298629 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:46:45, skipping insertion in model container [2022-12-14 10:46:45,736 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 10:46:45" (1/1) ... [2022-12-14 10:46:45,744 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 10:46:45,769 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 10:46:45,942 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 10:46:45,949 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2022-12-14 10:46:45,949 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@5dc09a61 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:46:45, skipping insertion in model container [2022-12-14 10:46:45,949 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 10:46:45,950 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2022-12-14 10:46:45,951 INFO L158 Benchmark]: Toolchain (without parser) took 222.21ms. Allocated memory is still 167.8MB. Free memory was 132.2MB in the beginning and 120.5MB in the end (delta: 11.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-12-14 10:46:45,951 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 167.8MB. Free memory is still 138.1MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 10:46:45,951 INFO L158 Benchmark]: CACSL2BoogieTranslator took 219.42ms. Allocated memory is still 167.8MB. Free memory was 132.2MB in the beginning and 120.5MB in the end (delta: 11.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-12-14 10:46:45,952 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 167.8MB. Free memory is still 138.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 219.42ms. Allocated memory is still 167.8MB. Free memory was 132.2MB in the beginning and 120.5MB in the end (delta: 11.8MB). Peak memory consumption was 10.5MB. 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-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30fedb40-a0b9-4db9-90fc-082cefc5fb5f/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30fedb40-a0b9-4db9-90fc-082cefc5fb5f/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30fedb40-a0b9-4db9-90fc-082cefc5fb5f/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30fedb40-a0b9-4db9-90fc-082cefc5fb5f/bin/utaipan-gh47qXpMRh/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety/test-0102-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30fedb40-a0b9-4db9-90fc-082cefc5fb5f/bin/utaipan-gh47qXpMRh/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30fedb40-a0b9-4db9-90fc-082cefc5fb5f/bin/utaipan-gh47qXpMRh --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash d10910cb8c44ec8f982d35122d9e66670129ee7c874265953b685f7f63a30072 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-14 10:46:47,349 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 10:46:47,351 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 10:46:47,372 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 10:46:47,372 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 10:46:47,373 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 10:46:47,374 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 10:46:47,376 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 10:46:47,378 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 10:46:47,379 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 10:46:47,380 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 10:46:47,381 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 10:46:47,381 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 10:46:47,382 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 10:46:47,383 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 10:46:47,385 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 10:46:47,386 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 10:46:47,386 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 10:46:47,388 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 10:46:47,390 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 10:46:47,392 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 10:46:47,393 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 10:46:47,394 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 10:46:47,395 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 10:46:47,399 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 10:46:47,399 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 10:46:47,400 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 10:46:47,401 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 10:46:47,401 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 10:46:47,402 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 10:46:47,403 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 10:46:47,404 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 10:46:47,404 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 10:46:47,405 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 10:46:47,406 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 10:46:47,406 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 10:46:47,407 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 10:46:47,407 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 10:46:47,407 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 10:46:47,408 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 10:46:47,409 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 10:46:47,410 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30fedb40-a0b9-4db9-90fc-082cefc5fb5f/bin/utaipan-gh47qXpMRh/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2022-12-14 10:46:47,433 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 10:46:47,433 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 10:46:47,434 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 10:46:47,434 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 10:46:47,434 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 10:46:47,435 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 10:46:47,435 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 10:46:47,435 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 10:46:47,435 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 10:46:47,435 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 10:46:47,436 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 10:46:47,436 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 10:46:47,436 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-14 10:46:47,437 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-14 10:46:47,437 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 10:46:47,437 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 10:46:47,437 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-14 10:46:47,438 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 10:46:47,438 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 10:46:47,438 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 10:46:47,438 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-12-14 10:46:47,438 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-12-14 10:46:47,438 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-12-14 10:46:47,439 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 10:46:47,439 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-12-14 10:46:47,439 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-12-14 10:46:47,439 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-12-14 10:46:47,439 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 10:46:47,440 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 10:46:47,450 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 10:46:47,450 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-14 10:46:47,450 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 10:46:47,450 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 10:46:47,451 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 10:46:47,451 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 10:46:47,451 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-12-14 10:46:47,451 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-12-14 10:46:47,451 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 10:46:47,451 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-14 10:46:47,451 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_30fedb40-a0b9-4db9-90fc-082cefc5fb5f/bin/utaipan-gh47qXpMRh/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30fedb40-a0b9-4db9-90fc-082cefc5fb5f/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d10910cb8c44ec8f982d35122d9e66670129ee7c874265953b685f7f63a30072 [2022-12-14 10:46:47,671 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 10:46:47,686 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 10:46:47,687 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 10:46:47,688 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 10:46:47,689 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 10:46:47,690 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30fedb40-a0b9-4db9-90fc-082cefc5fb5f/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/memsafety/test-0102-2.i [2022-12-14 10:46:50,252 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 10:46:50,471 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 10:46:50,471 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30fedb40-a0b9-4db9-90fc-082cefc5fb5f/sv-benchmarks/c/memsafety/test-0102-2.i [2022-12-14 10:46:50,483 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30fedb40-a0b9-4db9-90fc-082cefc5fb5f/bin/utaipan-gh47qXpMRh/data/414c493dc/a6d1dfdd503142ea94889abf41effccd/FLAG2f176423e [2022-12-14 10:46:50,495 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30fedb40-a0b9-4db9-90fc-082cefc5fb5f/bin/utaipan-gh47qXpMRh/data/414c493dc/a6d1dfdd503142ea94889abf41effccd [2022-12-14 10:46:50,497 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 10:46:50,498 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 10:46:50,499 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 10:46:50,499 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 10:46:50,503 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 10:46:50,503 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 10:46:50" (1/1) ... [2022-12-14 10:46:50,504 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d480d05 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:46:50, skipping insertion in model container [2022-12-14 10:46:50,505 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 10:46:50" (1/1) ... [2022-12-14 10:46:50,510 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 10:46:50,544 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 10:46:50,792 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 10:46:50,802 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-12-14 10:46:50,808 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 10:46:50,838 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 10:46:50,843 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 10:46:50,881 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 10:46:50,915 INFO L208 MainTranslator]: Completed translation [2022-12-14 10:46:50,915 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:46:50 WrapperNode [2022-12-14 10:46:50,916 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 10:46:50,917 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 10:46:50,917 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 10:46:50,917 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 10:46:50,923 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:46:50" (1/1) ... [2022-12-14 10:46:50,937 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:46:50" (1/1) ... [2022-12-14 10:46:50,957 INFO L138 Inliner]: procedures = 136, calls = 37, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 101 [2022-12-14 10:46:50,957 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 10:46:50,958 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 10:46:50,958 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 10:46:50,958 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 10:46:50,967 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:46:50" (1/1) ... [2022-12-14 10:46:50,967 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:46:50" (1/1) ... [2022-12-14 10:46:50,971 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:46:50" (1/1) ... [2022-12-14 10:46:50,971 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:46:50" (1/1) ... [2022-12-14 10:46:50,981 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:46:50" (1/1) ... [2022-12-14 10:46:50,984 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:46:50" (1/1) ... [2022-12-14 10:46:50,986 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:46:50" (1/1) ... [2022-12-14 10:46:50,987 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:46:50" (1/1) ... [2022-12-14 10:46:50,990 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 10:46:50,991 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 10:46:50,991 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 10:46:50,991 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 10:46:50,992 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:46:50" (1/1) ... [2022-12-14 10:46:50,998 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 10:46:51,008 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30fedb40-a0b9-4db9-90fc-082cefc5fb5f/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 10:46:51,020 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30fedb40-a0b9-4db9-90fc-082cefc5fb5f/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 10:46:51,023 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30fedb40-a0b9-4db9-90fc-082cefc5fb5f/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 10:46:51,052 INFO L130 BoogieDeclarations]: Found specification of procedure list_add_tail [2022-12-14 10:46:51,052 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add_tail [2022-12-14 10:46:51,052 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-14 10:46:51,052 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 10:46:51,052 INFO L130 BoogieDeclarations]: Found specification of procedure create_sub_list [2022-12-14 10:46:51,053 INFO L138 BoogieDeclarations]: Found implementation of procedure create_sub_list [2022-12-14 10:46:51,053 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-14 10:46:51,053 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-12-14 10:46:51,053 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-12-14 10:46:51,053 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-12-14 10:46:51,053 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-14 10:46:51,053 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-12-14 10:46:51,053 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-12-14 10:46:51,053 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 10:46:51,054 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 10:46:51,165 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 10:46:51,167 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 10:46:51,509 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 10:46:51,515 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 10:46:51,515 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-12-14 10:46:51,517 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 10:46:51 BoogieIcfgContainer [2022-12-14 10:46:51,517 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 10:46:51,520 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 10:46:51,520 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 10:46:51,523 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 10:46:51,523 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 10:46:50" (1/3) ... [2022-12-14 10:46:51,524 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71b78a54 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 10:46:51, skipping insertion in model container [2022-12-14 10:46:51,524 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:46:50" (2/3) ... [2022-12-14 10:46:51,524 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71b78a54 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 10:46:51, skipping insertion in model container [2022-12-14 10:46:51,525 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 10:46:51" (3/3) ... [2022-12-14 10:46:51,526 INFO L112 eAbstractionObserver]: Analyzing ICFG test-0102-2.i [2022-12-14 10:46:51,543 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 10:46:51,543 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 31 error locations. [2022-12-14 10:46:51,584 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 10:46:51,591 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;@565c3fb8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 10:46:51,591 INFO L358 AbstractCegarLoop]: Starting to check reachability of 31 error locations. [2022-12-14 10:46:51,595 INFO L276 IsEmpty]: Start isEmpty. Operand has 83 states, 45 states have (on average 1.9111111111111112) internal successors, (86), 76 states have internal predecessors, (86), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-12-14 10:46:51,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-12-14 10:46:51,601 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:46:51,601 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-12-14 10:46:51,602 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)] === [2022-12-14 10:46:51,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:46:51,607 INFO L85 PathProgramCache]: Analyzing trace with hash 60205689, now seen corresponding path program 1 times [2022-12-14 10:46:51,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 10:46:51,620 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1905612459] [2022-12-14 10:46:51,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:46:51,620 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 10:46:51,620 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30fedb40-a0b9-4db9-90fc-082cefc5fb5f/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 10:46:51,622 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30fedb40-a0b9-4db9-90fc-082cefc5fb5f/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 10:46:51,661 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30fedb40-a0b9-4db9-90fc-082cefc5fb5f/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-12-14 10:46:51,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:46:51,719 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 1 conjunts are in the unsatisfiable core [2022-12-14 10:46:51,723 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:46:51,741 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:46:51,741 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 10:46:51,742 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 10:46:51,742 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1905612459] [2022-12-14 10:46:51,743 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1905612459] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:46:51,743 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:46:51,743 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 10:46:51,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629437498] [2022-12-14 10:46:51,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:46:51,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-14 10:46:51,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 10:46:51,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-14 10:46:51,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-14 10:46:51,779 INFO L87 Difference]: Start difference. First operand has 83 states, 45 states have (on average 1.9111111111111112) internal successors, (86), 76 states have internal predecessors, (86), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) 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) [2022-12-14 10:46:51,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:46:51,804 INFO L93 Difference]: Finished difference Result 83 states and 88 transitions. [2022-12-14 10:46:51,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-14 10:46:51,805 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 [2022-12-14 10:46:51,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:46:51,816 INFO L225 Difference]: With dead ends: 83 [2022-12-14 10:46:51,816 INFO L226 Difference]: Without dead ends: 81 [2022-12-14 10:46:51,817 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 [2022-12-14 10:46:51,820 INFO L413 NwaCegarLoop]: 88 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, 88 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 [2022-12-14 10:46:51,821 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 10:46:51,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2022-12-14 10:46:51,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2022-12-14 10:46:51,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 44 states have (on average 1.7727272727272727) internal successors, (78), 74 states have internal predecessors, (78), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-12-14 10:46:51,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 86 transitions. [2022-12-14 10:46:51,850 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 86 transitions. Word has length 5 [2022-12-14 10:46:51,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:46:51,851 INFO L495 AbstractCegarLoop]: Abstraction has 81 states and 86 transitions. [2022-12-14 10:46:51,851 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) [2022-12-14 10:46:51,851 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 86 transitions. [2022-12-14 10:46:51,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-12-14 10:46:51,851 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:46:51,852 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:46:51,860 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30fedb40-a0b9-4db9-90fc-082cefc5fb5f/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-12-14 10:46:52,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30fedb40-a0b9-4db9-90fc-082cefc5fb5f/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 10:46:52,055 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)] === [2022-12-14 10:46:52,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:46:52,057 INFO L85 PathProgramCache]: Analyzing trace with hash 2005144647, now seen corresponding path program 1 times [2022-12-14 10:46:52,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 10:46:52,059 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [922038468] [2022-12-14 10:46:52,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:46:52,060 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 10:46:52,061 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30fedb40-a0b9-4db9-90fc-082cefc5fb5f/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 10:46:52,064 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30fedb40-a0b9-4db9-90fc-082cefc5fb5f/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 10:46:52,068 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30fedb40-a0b9-4db9-90fc-082cefc5fb5f/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-12-14 10:46:52,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:46:52,241 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-14 10:46:52,243 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:46:52,291 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-12-14 10:46:52,329 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:46:52,329 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 10:46:52,330 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 10:46:52,330 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [922038468] [2022-12-14 10:46:52,330 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [922038468] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:46:52,330 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:46:52,330 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 10:46:52,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122624127] [2022-12-14 10:46:52,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:46:52,332 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 10:46:52,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 10:46:52,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 10:46:52,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 10:46:52,333 INFO L87 Difference]: Start difference. First operand 81 states and 86 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) [2022-12-14 10:46:52,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:46:52,584 INFO L93 Difference]: Finished difference Result 108 states and 115 transitions. [2022-12-14 10:46:52,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 10:46:52,585 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 [2022-12-14 10:46:52,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:46:52,586 INFO L225 Difference]: With dead ends: 108 [2022-12-14 10:46:52,586 INFO L226 Difference]: Without dead ends: 108 [2022-12-14 10:46:52,586 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 [2022-12-14 10:46:52,587 INFO L413 NwaCegarLoop]: 60 mSDtfsCounter, 60 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 162 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 10:46:52,588 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 162 Invalid, 140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 10:46:52,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2022-12-14 10:46:52,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 79. [2022-12-14 10:46:52,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 44 states have (on average 1.7272727272727273) internal successors, (76), 72 states have internal predecessors, (76), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-12-14 10:46:52,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 84 transitions. [2022-12-14 10:46:52,595 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 84 transitions. Word has length 7 [2022-12-14 10:46:52,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:46:52,596 INFO L495 AbstractCegarLoop]: Abstraction has 79 states and 84 transitions. [2022-12-14 10:46:52,596 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) [2022-12-14 10:46:52,596 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 84 transitions. [2022-12-14 10:46:52,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-12-14 10:46:52,596 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:46:52,596 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:46:52,604 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30fedb40-a0b9-4db9-90fc-082cefc5fb5f/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2022-12-14 10:46:52,797 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30fedb40-a0b9-4db9-90fc-082cefc5fb5f/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 10:46:52,798 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)] === [2022-12-14 10:46:52,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:46:52,801 INFO L85 PathProgramCache]: Analyzing trace with hash 2005144648, now seen corresponding path program 1 times [2022-12-14 10:46:52,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 10:46:52,803 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [102600647] [2022-12-14 10:46:52,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:46:52,804 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 10:46:52,805 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30fedb40-a0b9-4db9-90fc-082cefc5fb5f/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 10:46:52,807 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30fedb40-a0b9-4db9-90fc-082cefc5fb5f/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 10:46:52,810 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30fedb40-a0b9-4db9-90fc-082cefc5fb5f/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-12-14 10:46:52,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:46:52,952 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 10 conjunts are in the unsatisfiable core [2022-12-14 10:46:52,954 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:46:52,963 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 5 [2022-12-14 10:46:53,013 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:46:53,013 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 10:46:53,014 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 10:46:53,014 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [102600647] [2022-12-14 10:46:53,014 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [102600647] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:46:53,014 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:46:53,014 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 10:46:53,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249703048] [2022-12-14 10:46:53,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:46:53,015 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 10:46:53,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 10:46:53,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 10:46:53,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 10:46:53,016 INFO L87 Difference]: Start difference. First operand 79 states and 84 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) [2022-12-14 10:46:53,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:46:53,231 INFO L93 Difference]: Finished difference Result 83 states and 88 transitions. [2022-12-14 10:46:53,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 10:46:53,232 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 [2022-12-14 10:46:53,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:46:53,232 INFO L225 Difference]: With dead ends: 83 [2022-12-14 10:46:53,232 INFO L226 Difference]: Without dead ends: 83 [2022-12-14 10:46:53,233 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 [2022-12-14 10:46:53,233 INFO L413 NwaCegarLoop]: 79 mSDtfsCounter, 5 mSDsluCounter, 155 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 234 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 10:46:53,234 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 234 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 10:46:53,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2022-12-14 10:46:53,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 82. [2022-12-14 10:46:53,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 47 states have (on average 1.6808510638297873) internal successors, (79), 74 states have internal predecessors, (79), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-12-14 10:46:53,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 87 transitions. [2022-12-14 10:46:53,238 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 87 transitions. Word has length 7 [2022-12-14 10:46:53,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:46:53,238 INFO L495 AbstractCegarLoop]: Abstraction has 82 states and 87 transitions. [2022-12-14 10:46:53,238 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) [2022-12-14 10:46:53,239 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 87 transitions. [2022-12-14 10:46:53,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-12-14 10:46:53,239 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:46:53,239 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:46:53,247 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30fedb40-a0b9-4db9-90fc-082cefc5fb5f/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-12-14 10:46:53,439 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30fedb40-a0b9-4db9-90fc-082cefc5fb5f/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 10:46:53,440 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)] === [2022-12-14 10:46:53,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:46:53,441 INFO L85 PathProgramCache]: Analyzing trace with hash 859208239, now seen corresponding path program 1 times [2022-12-14 10:46:53,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 10:46:53,442 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [497171243] [2022-12-14 10:46:53,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:46:53,442 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 10:46:53,442 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30fedb40-a0b9-4db9-90fc-082cefc5fb5f/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 10:46:53,444 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30fedb40-a0b9-4db9-90fc-082cefc5fb5f/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 10:46:53,445 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30fedb40-a0b9-4db9-90fc-082cefc5fb5f/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-12-14 10:46:53,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:46:53,507 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 10:46:53,508 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:46:53,512 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-12-14 10:46:53,518 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:46:53,518 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 10:46:53,518 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 10:46:53,519 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [497171243] [2022-12-14 10:46:53,519 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [497171243] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:46:53,519 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:46:53,519 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 10:46:53,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053111307] [2022-12-14 10:46:53,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:46:53,519 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 10:46:53,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 10:46:53,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 10:46:53,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 10:46:53,520 INFO L87 Difference]: Start difference. First operand 82 states and 87 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) [2022-12-14 10:46:53,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:46:53,607 INFO L93 Difference]: Finished difference Result 82 states and 87 transitions. [2022-12-14 10:46:53,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 10:46:53,607 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 [2022-12-14 10:46:53,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:46:53,608 INFO L225 Difference]: With dead ends: 82 [2022-12-14 10:46:53,608 INFO L226 Difference]: Without dead ends: 82 [2022-12-14 10:46:53,608 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 [2022-12-14 10:46:53,609 INFO L413 NwaCegarLoop]: 80 mSDtfsCounter, 6 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 122 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 [2022-12-14 10:46:53,609 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 122 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 10:46:53,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2022-12-14 10:46:53,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 81. [2022-12-14 10:46:53,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 47 states have (on average 1.6595744680851063) internal successors, (78), 73 states have internal predecessors, (78), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-12-14 10:46:53,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 86 transitions. [2022-12-14 10:46:53,617 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 86 transitions. Word has length 11 [2022-12-14 10:46:53,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:46:53,618 INFO L495 AbstractCegarLoop]: Abstraction has 81 states and 86 transitions. [2022-12-14 10:46:53,618 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) [2022-12-14 10:46:53,618 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 86 transitions. [2022-12-14 10:46:53,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-12-14 10:46:53,618 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:46:53,618 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:46:53,625 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30fedb40-a0b9-4db9-90fc-082cefc5fb5f/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Ended with exit code 0 [2022-12-14 10:46:53,819 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30fedb40-a0b9-4db9-90fc-082cefc5fb5f/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 10:46:53,820 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)] === [2022-12-14 10:46:53,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:46:53,821 INFO L85 PathProgramCache]: Analyzing trace with hash 859208240, now seen corresponding path program 1 times [2022-12-14 10:46:53,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 10:46:53,821 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2045580759] [2022-12-14 10:46:53,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:46:53,822 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 10:46:53,822 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30fedb40-a0b9-4db9-90fc-082cefc5fb5f/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 10:46:53,823 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30fedb40-a0b9-4db9-90fc-082cefc5fb5f/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 10:46:53,825 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30fedb40-a0b9-4db9-90fc-082cefc5fb5f/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-12-14 10:46:53,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:46:53,917 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-14 10:46:53,918 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:46:53,924 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-14 10:46:53,937 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:46:53,937 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 10:46:53,938 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 10:46:53,938 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2045580759] [2022-12-14 10:46:53,938 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2045580759] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:46:53,938 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:46:53,938 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 10:46:53,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443904341] [2022-12-14 10:46:53,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:46:53,938 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 10:46:53,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 10:46:53,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 10:46:53,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 10:46:53,939 INFO L87 Difference]: Start difference. First operand 81 states and 86 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) [2022-12-14 10:46:54,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:46:54,045 INFO L93 Difference]: Finished difference Result 81 states and 86 transitions. [2022-12-14 10:46:54,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 10:46:54,046 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 [2022-12-14 10:46:54,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:46:54,047 INFO L225 Difference]: With dead ends: 81 [2022-12-14 10:46:54,047 INFO L226 Difference]: Without dead ends: 81 [2022-12-14 10:46:54,047 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 [2022-12-14 10:46:54,048 INFO L413 NwaCegarLoop]: 80 mSDtfsCounter, 5 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 126 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 10:46:54,048 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 126 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 10:46:54,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2022-12-14 10:46:54,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 80. [2022-12-14 10:46:54,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 47 states have (on average 1.6382978723404256) internal successors, (77), 72 states have internal predecessors, (77), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-12-14 10:46:54,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 85 transitions. [2022-12-14 10:46:54,051 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 85 transitions. Word has length 11 [2022-12-14 10:46:54,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:46:54,051 INFO L495 AbstractCegarLoop]: Abstraction has 80 states and 85 transitions. [2022-12-14 10:46:54,051 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) [2022-12-14 10:46:54,051 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 85 transitions. [2022-12-14 10:46:54,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-12-14 10:46:54,052 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:46:54,052 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:46:54,060 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30fedb40-a0b9-4db9-90fc-082cefc5fb5f/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-12-14 10:46:54,252 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30fedb40-a0b9-4db9-90fc-082cefc5fb5f/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 10:46:54,253 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting list_add_tailErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_sub_listErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_sub_listErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_sub_listErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-12-14 10:46:54,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:46:54,255 INFO L85 PathProgramCache]: Analyzing trace with hash -1332328513, now seen corresponding path program 1 times [2022-12-14 10:46:54,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 10:46:54,256 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [709110385] [2022-12-14 10:46:54,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:46:54,256 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 10:46:54,257 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30fedb40-a0b9-4db9-90fc-082cefc5fb5f/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 10:46:54,259 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30fedb40-a0b9-4db9-90fc-082cefc5fb5f/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 10:46:54,262 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30fedb40-a0b9-4db9-90fc-082cefc5fb5f/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-12-14 10:46:54,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:46:54,393 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 13 conjunts are in the unsatisfiable core [2022-12-14 10:46:54,394 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:46:54,398 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 7 [2022-12-14 10:46:54,433 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-12-14 10:46:54,434 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2022-12-14 10:46:54,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:46:54,476 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 10:46:54,476 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 10:46:54,476 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [709110385] [2022-12-14 10:46:54,476 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [709110385] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:46:54,476 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:46:54,476 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-14 10:46:54,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131931032] [2022-12-14 10:46:54,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:46:54,477 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-14 10:46:54,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 10:46:54,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-14 10:46:54,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-12-14 10:46:54,478 INFO L87 Difference]: Start difference. First operand 80 states and 85 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) [2022-12-14 10:46:54,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:46:54,785 INFO L93 Difference]: Finished difference Result 129 states and 135 transitions. [2022-12-14 10:46:54,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-14 10:46:54,786 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 [2022-12-14 10:46:54,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:46:54,786 INFO L225 Difference]: With dead ends: 129 [2022-12-14 10:46:54,786 INFO L226 Difference]: Without dead ends: 129 [2022-12-14 10:46:54,786 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 [2022-12-14 10:46:54,787 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 108 mSDsluCounter, 190 mSDsCounter, 0 mSdLazyCounter, 283 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 235 SdHoareTripleChecker+Invalid, 292 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 283 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-14 10:46:54,787 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 235 Invalid, 292 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 283 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-14 10:46:54,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2022-12-14 10:46:54,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 90. [2022-12-14 10:46:54,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 56 states have (on average 1.6964285714285714) internal successors, (95), 81 states have internal predecessors, (95), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-12-14 10:46:54,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 103 transitions. [2022-12-14 10:46:54,791 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 103 transitions. Word has length 14 [2022-12-14 10:46:54,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:46:54,792 INFO L495 AbstractCegarLoop]: Abstraction has 90 states and 103 transitions. [2022-12-14 10:46:54,792 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) [2022-12-14 10:46:54,792 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 103 transitions. [2022-12-14 10:46:54,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-12-14 10:46:54,792 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:46:54,792 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:46:54,802 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30fedb40-a0b9-4db9-90fc-082cefc5fb5f/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-12-14 10:46:54,993 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30fedb40-a0b9-4db9-90fc-082cefc5fb5f/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 10:46:54,994 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting list_add_tailErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_sub_listErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_sub_listErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_sub_listErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-12-14 10:46:54,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:46:54,996 INFO L85 PathProgramCache]: Analyzing trace with hash -1332328512, now seen corresponding path program 1 times [2022-12-14 10:46:54,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 10:46:54,997 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1379650357] [2022-12-14 10:46:54,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:46:54,998 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 10:46:54,998 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30fedb40-a0b9-4db9-90fc-082cefc5fb5f/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 10:46:55,001 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30fedb40-a0b9-4db9-90fc-082cefc5fb5f/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 10:46:55,004 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30fedb40-a0b9-4db9-90fc-082cefc5fb5f/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-12-14 10:46:55,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:46:55,155 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 24 conjunts are in the unsatisfiable core [2022-12-14 10:46:55,158 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:46:55,165 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-14 10:46:55,170 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-12-14 10:46:55,256 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:46:55,258 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-12-14 10:46:55,269 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-12-14 10:46:55,269 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-12-14 10:46:55,328 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:46:55,329 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 10:46:55,329 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 10:46:55,329 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1379650357] [2022-12-14 10:46:55,329 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1379650357] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:46:55,329 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:46:55,329 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-14 10:46:55,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932991453] [2022-12-14 10:46:55,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:46:55,330 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-14 10:46:55,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 10:46:55,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-14 10:46:55,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-12-14 10:46:55,330 INFO L87 Difference]: Start difference. First operand 90 states and 103 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) [2022-12-14 10:46:55,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:46:55,828 INFO L93 Difference]: Finished difference Result 117 states and 130 transitions. [2022-12-14 10:46:55,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-14 10:46:55,829 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 [2022-12-14 10:46:55,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:46:55,829 INFO L225 Difference]: With dead ends: 117 [2022-12-14 10:46:55,829 INFO L226 Difference]: Without dead ends: 117 [2022-12-14 10:46:55,830 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 [2022-12-14 10:46:55,830 INFO L413 NwaCegarLoop]: 64 mSDtfsCounter, 52 mSDsluCounter, 234 mSDsCounter, 0 mSdLazyCounter, 280 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 298 SdHoareTripleChecker+Invalid, 286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 280 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-12-14 10:46:55,830 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 298 Invalid, 286 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 280 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-12-14 10:46:55,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2022-12-14 10:46:55,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 108. [2022-12-14 10:46:55,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 71 states have (on average 1.676056338028169) internal successors, (119), 97 states have internal predecessors, (119), 5 states have call successors, (5), 5 states have call predecessors, (5), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-12-14 10:46:55,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 129 transitions. [2022-12-14 10:46:55,835 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 129 transitions. Word has length 14 [2022-12-14 10:46:55,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:46:55,835 INFO L495 AbstractCegarLoop]: Abstraction has 108 states and 129 transitions. [2022-12-14 10:46:55,836 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) [2022-12-14 10:46:55,836 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 129 transitions. [2022-12-14 10:46:55,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-12-14 10:46:55,836 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:46:55,836 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:46:55,846 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30fedb40-a0b9-4db9-90fc-082cefc5fb5f/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Ended with exit code 0 [2022-12-14 10:46:56,036 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30fedb40-a0b9-4db9-90fc-082cefc5fb5f/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 10:46:56,038 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)] === [2022-12-14 10:46:56,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:46:56,039 INFO L85 PathProgramCache]: Analyzing trace with hash -467443808, now seen corresponding path program 1 times [2022-12-14 10:46:56,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 10:46:56,040 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [551716570] [2022-12-14 10:46:56,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:46:56,041 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 10:46:56,041 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30fedb40-a0b9-4db9-90fc-082cefc5fb5f/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 10:46:56,044 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30fedb40-a0b9-4db9-90fc-082cefc5fb5f/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 10:46:56,046 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30fedb40-a0b9-4db9-90fc-082cefc5fb5f/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-12-14 10:46:56,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:46:56,178 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-14 10:46:56,180 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:46:56,193 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:46:56,193 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 10:46:56,193 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 10:46:56,193 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [551716570] [2022-12-14 10:46:56,194 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [551716570] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:46:56,194 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:46:56,194 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 10:46:56,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992086099] [2022-12-14 10:46:56,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:46:56,194 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 10:46:56,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 10:46:56,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 10:46:56,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 10:46:56,195 INFO L87 Difference]: Start difference. First operand 108 states and 129 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) [2022-12-14 10:46:56,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:46:56,310 INFO L93 Difference]: Finished difference Result 107 states and 126 transitions. [2022-12-14 10:46:56,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 10:46:56,310 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 [2022-12-14 10:46:56,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:46:56,311 INFO L225 Difference]: With dead ends: 107 [2022-12-14 10:46:56,311 INFO L226 Difference]: Without dead ends: 107 [2022-12-14 10:46:56,311 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 [2022-12-14 10:46:56,312 INFO L413 NwaCegarLoop]: 72 mSDtfsCounter, 27 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 10:46:56,312 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 154 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 10:46:56,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2022-12-14 10:46:56,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 107. [2022-12-14 10:46:56,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 71 states have (on average 1.6338028169014085) internal successors, (116), 96 states have internal predecessors, (116), 5 states have call successors, (5), 5 states have call predecessors, (5), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-12-14 10:46:56,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 126 transitions. [2022-12-14 10:46:56,318 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 126 transitions. Word has length 16 [2022-12-14 10:46:56,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:46:56,318 INFO L495 AbstractCegarLoop]: Abstraction has 107 states and 126 transitions. [2022-12-14 10:46:56,318 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) [2022-12-14 10:46:56,318 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 126 transitions. [2022-12-14 10:46:56,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-12-14 10:46:56,319 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:46:56,319 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:46:56,327 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30fedb40-a0b9-4db9-90fc-082cefc5fb5f/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Ended with exit code 0 [2022-12-14 10:46:56,520 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30fedb40-a0b9-4db9-90fc-082cefc5fb5f/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 10:46:56,521 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)] === [2022-12-14 10:46:56,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:46:56,522 INFO L85 PathProgramCache]: Analyzing trace with hash -467443807, now seen corresponding path program 1 times [2022-12-14 10:46:56,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 10:46:56,523 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2077039759] [2022-12-14 10:46:56,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:46:56,524 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 10:46:56,524 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30fedb40-a0b9-4db9-90fc-082cefc5fb5f/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 10:46:56,527 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30fedb40-a0b9-4db9-90fc-082cefc5fb5f/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 10:46:56,530 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30fedb40-a0b9-4db9-90fc-082cefc5fb5f/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-12-14 10:46:56,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:46:56,693 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 13 conjunts are in the unsatisfiable core [2022-12-14 10:46:56,694 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:46:56,775 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:46:56,775 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 10:46:56,776 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 10:46:56,776 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2077039759] [2022-12-14 10:46:56,776 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2077039759] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:46:56,776 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:46:56,776 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-12-14 10:46:56,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394997500] [2022-12-14 10:46:56,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:46:56,777 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-14 10:46:56,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 10:46:56,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-14 10:46:56,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-12-14 10:46:56,778 INFO L87 Difference]: Start difference. First operand 107 states and 126 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) [2022-12-14 10:46:57,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:46:57,089 INFO L93 Difference]: Finished difference Result 115 states and 127 transitions. [2022-12-14 10:46:57,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-14 10:46:57,090 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 [2022-12-14 10:46:57,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:46:57,090 INFO L225 Difference]: With dead ends: 115 [2022-12-14 10:46:57,090 INFO L226 Difference]: Without dead ends: 115 [2022-12-14 10:46:57,091 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2022-12-14 10:46:57,091 INFO L413 NwaCegarLoop]: 66 mSDtfsCounter, 113 mSDsluCounter, 390 mSDsCounter, 0 mSdLazyCounter, 165 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 456 SdHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 10:46:57,091 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [116 Valid, 456 Invalid, 168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 165 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 10:46:57,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2022-12-14 10:46:57,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 107. [2022-12-14 10:46:57,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 71 states have (on average 1.619718309859155) internal successors, (115), 96 states have internal predecessors, (115), 5 states have call successors, (5), 5 states have call predecessors, (5), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-12-14 10:46:57,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 125 transitions. [2022-12-14 10:46:57,094 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 125 transitions. Word has length 16 [2022-12-14 10:46:57,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:46:57,095 INFO L495 AbstractCegarLoop]: Abstraction has 107 states and 125 transitions. [2022-12-14 10:46:57,095 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) [2022-12-14 10:46:57,095 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 125 transitions. [2022-12-14 10:46:57,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-12-14 10:46:57,095 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:46:57,095 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:46:57,107 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30fedb40-a0b9-4db9-90fc-082cefc5fb5f/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Ended with exit code 0 [2022-12-14 10:46:57,296 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30fedb40-a0b9-4db9-90fc-082cefc5fb5f/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 10:46:57,296 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)] === [2022-12-14 10:46:57,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:46:57,297 INFO L85 PathProgramCache]: Analyzing trace with hash -1605856063, now seen corresponding path program 1 times [2022-12-14 10:46:57,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 10:46:57,297 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [87249422] [2022-12-14 10:46:57,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:46:57,298 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 10:46:57,298 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30fedb40-a0b9-4db9-90fc-082cefc5fb5f/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 10:46:57,299 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30fedb40-a0b9-4db9-90fc-082cefc5fb5f/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 10:46:57,301 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30fedb40-a0b9-4db9-90fc-082cefc5fb5f/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-12-14 10:46:57,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:46:57,441 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-14 10:46:57,442 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:46:57,446 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-12-14 10:46:57,482 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:46:57,482 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 10:46:57,482 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 10:46:57,482 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [87249422] [2022-12-14 10:46:57,482 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [87249422] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:46:57,482 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:46:57,483 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-14 10:46:57,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262582823] [2022-12-14 10:46:57,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:46:57,483 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-14 10:46:57,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 10:46:57,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-14 10:46:57,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-12-14 10:46:57,484 INFO L87 Difference]: Start difference. First operand 107 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) [2022-12-14 10:46:57,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:46:57,745 INFO L93 Difference]: Finished difference Result 114 states and 122 transitions. [2022-12-14 10:46:57,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-14 10:46:57,745 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 [2022-12-14 10:46:57,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:46:57,746 INFO L225 Difference]: With dead ends: 114 [2022-12-14 10:46:57,746 INFO L226 Difference]: Without dead ends: 114 [2022-12-14 10:46:57,746 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-12-14 10:46:57,747 INFO L413 NwaCegarLoop]: 67 mSDtfsCounter, 49 mSDsluCounter, 159 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 226 SdHoareTripleChecker+Invalid, 164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 10:46:57,747 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 226 Invalid, 164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 10:46:57,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2022-12-14 10:46:57,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 106. [2022-12-14 10:46:57,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 71 states have (on average 1.5492957746478873) internal successors, (110), 95 states have internal predecessors, (110), 5 states have call successors, (5), 5 states have call predecessors, (5), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-12-14 10:46:57,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 120 transitions. [2022-12-14 10:46:57,750 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 120 transitions. Word has length 17 [2022-12-14 10:46:57,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:46:57,750 INFO L495 AbstractCegarLoop]: Abstraction has 106 states and 120 transitions. [2022-12-14 10:46:57,750 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) [2022-12-14 10:46:57,750 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 120 transitions. [2022-12-14 10:46:57,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-12-14 10:46:57,750 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:46:57,750 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:46:57,758 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30fedb40-a0b9-4db9-90fc-082cefc5fb5f/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Ended with exit code 0 [2022-12-14 10:46:57,951 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30fedb40-a0b9-4db9-90fc-082cefc5fb5f/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 10:46:57,953 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)] === [2022-12-14 10:46:57,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:46:57,954 INFO L85 PathProgramCache]: Analyzing trace with hash -1605856062, now seen corresponding path program 1 times [2022-12-14 10:46:57,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 10:46:57,955 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1355508030] [2022-12-14 10:46:57,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:46:57,956 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 10:46:57,956 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30fedb40-a0b9-4db9-90fc-082cefc5fb5f/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 10:46:57,959 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30fedb40-a0b9-4db9-90fc-082cefc5fb5f/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 10:46:57,962 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30fedb40-a0b9-4db9-90fc-082cefc5fb5f/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-12-14 10:46:58,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:46:58,065 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 12 conjunts are in the unsatisfiable core [2022-12-14 10:46:58,067 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:46:58,073 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-14 10:46:58,148 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:46:58,148 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 10:46:58,148 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 10:46:58,148 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1355508030] [2022-12-14 10:46:58,148 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1355508030] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:46:58,148 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:46:58,148 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-14 10:46:58,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102730690] [2022-12-14 10:46:58,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:46:58,149 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-14 10:46:58,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 10:46:58,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-14 10:46:58,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-12-14 10:46:58,149 INFO L87 Difference]: Start difference. First operand 106 states and 120 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) [2022-12-14 10:46:58,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:46:58,449 INFO L93 Difference]: Finished difference Result 112 states and 118 transitions. [2022-12-14 10:46:58,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 10:46:58,450 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 [2022-12-14 10:46:58,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:46:58,450 INFO L225 Difference]: With dead ends: 112 [2022-12-14 10:46:58,450 INFO L226 Difference]: Without dead ends: 112 [2022-12-14 10:46:58,451 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 [2022-12-14 10:46:58,451 INFO L413 NwaCegarLoop]: 67 mSDtfsCounter, 36 mSDsluCounter, 179 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 246 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-14 10:46:58,451 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 246 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 149 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-14 10:46:58,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2022-12-14 10:46:58,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 106. [2022-12-14 10:46:58,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 71 states have (on average 1.4929577464788732) internal successors, (106), 95 states have internal predecessors, (106), 5 states have call successors, (5), 5 states have call predecessors, (5), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-12-14 10:46:58,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 116 transitions. [2022-12-14 10:46:58,455 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 116 transitions. Word has length 17 [2022-12-14 10:46:58,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:46:58,455 INFO L495 AbstractCegarLoop]: Abstraction has 106 states and 116 transitions. [2022-12-14 10:46:58,455 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) [2022-12-14 10:46:58,455 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 116 transitions. [2022-12-14 10:46:58,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-12-14 10:46:58,456 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:46:58,456 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:46:58,464 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30fedb40-a0b9-4db9-90fc-082cefc5fb5f/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Ended with exit code 0 [2022-12-14 10:46:58,657 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30fedb40-a0b9-4db9-90fc-082cefc5fb5f/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 10:46:58,657 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)] === [2022-12-14 10:46:58,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:46:58,658 INFO L85 PathProgramCache]: Analyzing trace with hash -1334414076, now seen corresponding path program 1 times [2022-12-14 10:46:58,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 10:46:58,660 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1283818559] [2022-12-14 10:46:58,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:46:58,660 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 10:46:58,661 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30fedb40-a0b9-4db9-90fc-082cefc5fb5f/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 10:46:58,663 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30fedb40-a0b9-4db9-90fc-082cefc5fb5f/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 10:46:58,666 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30fedb40-a0b9-4db9-90fc-082cefc5fb5f/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-12-14 10:46:58,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:46:58,815 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 28 conjunts are in the unsatisfiable core [2022-12-14 10:46:58,817 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:46:58,820 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-12-14 10:46:58,843 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 [2022-12-14 10:46:58,871 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-12-14 10:46:58,894 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-12-14 10:46:58,894 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-12-14 10:46:58,926 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 [2022-12-14 10:46:58,987 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 [2022-12-14 10:46:59,024 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:46:59,024 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 10:46:59,024 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 10:46:59,025 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1283818559] [2022-12-14 10:46:59,025 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1283818559] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:46:59,025 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:46:59,025 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-12-14 10:46:59,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122725645] [2022-12-14 10:46:59,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:46:59,025 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-12-14 10:46:59,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 10:46:59,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-12-14 10:46:59,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2022-12-14 10:46:59,026 INFO L87 Difference]: Start difference. First operand 106 states and 116 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) [2022-12-14 10:46:59,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:46:59,694 INFO L93 Difference]: Finished difference Result 162 states and 177 transitions. [2022-12-14 10:46:59,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-14 10:46:59,695 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 [2022-12-14 10:46:59,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:46:59,697 INFO L225 Difference]: With dead ends: 162 [2022-12-14 10:46:59,697 INFO L226 Difference]: Without dead ends: 162 [2022-12-14 10:46:59,697 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=307, Unknown=0, NotChecked=0, Total=380 [2022-12-14 10:46:59,697 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 80 mSDsluCounter, 311 mSDsCounter, 0 mSdLazyCounter, 414 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 356 SdHoareTripleChecker+Invalid, 427 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 414 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-12-14 10:46:59,697 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 356 Invalid, 427 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 414 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-12-14 10:46:59,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2022-12-14 10:46:59,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 128. [2022-12-14 10:46:59,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 91 states have (on average 1.4285714285714286) internal successors, (130), 115 states have internal predecessors, (130), 7 states have call successors, (7), 7 states have call predecessors, (7), 5 states have return successors, (7), 5 states have call predecessors, (7), 7 states have call successors, (7) [2022-12-14 10:46:59,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 144 transitions. [2022-12-14 10:46:59,701 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 144 transitions. Word has length 19 [2022-12-14 10:46:59,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:46:59,702 INFO L495 AbstractCegarLoop]: Abstraction has 128 states and 144 transitions. [2022-12-14 10:46:59,702 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) [2022-12-14 10:46:59,702 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 144 transitions. [2022-12-14 10:46:59,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-12-14 10:46:59,702 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:46:59,702 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:46:59,714 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30fedb40-a0b9-4db9-90fc-082cefc5fb5f/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Ended with exit code 0 [2022-12-14 10:46:59,903 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30fedb40-a0b9-4db9-90fc-082cefc5fb5f/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 10:46:59,903 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)] === [2022-12-14 10:46:59,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:46:59,903 INFO L85 PathProgramCache]: Analyzing trace with hash -1334414075, now seen corresponding path program 1 times [2022-12-14 10:46:59,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 10:46:59,904 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [800224751] [2022-12-14 10:46:59,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:46:59,904 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 10:46:59,904 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30fedb40-a0b9-4db9-90fc-082cefc5fb5f/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 10:46:59,905 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30fedb40-a0b9-4db9-90fc-082cefc5fb5f/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 10:46:59,906 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30fedb40-a0b9-4db9-90fc-082cefc5fb5f/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2022-12-14 10:47:00,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:47:00,060 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 46 conjunts are in the unsatisfiable core [2022-12-14 10:47:00,063 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:47:00,068 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-12-14 10:47:00,074 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-14 10:47:00,135 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 [2022-12-14 10:47:00,140 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 [2022-12-14 10:47:00,169 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:47:00,170 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 [2022-12-14 10:47:00,180 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:47:00,180 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 [2022-12-14 10:47:00,201 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-12-14 10:47:00,201 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-12-14 10:47:00,210 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-12-14 10:47:00,255 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 14 treesize of output 16 [2022-12-14 10:47:00,263 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 [2022-12-14 10:47:00,347 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-12-14 10:47:00,350 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-12-14 10:47:00,411 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:47:00,411 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 10:47:00,411 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 10:47:00,411 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [800224751] [2022-12-14 10:47:00,411 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [800224751] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:47:00,411 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:47:00,411 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-12-14 10:47:00,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099935979] [2022-12-14 10:47:00,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:47:00,412 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-12-14 10:47:00,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 10:47:00,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-12-14 10:47:00,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2022-12-14 10:47:00,412 INFO L87 Difference]: Start difference. First operand 128 states and 144 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) [2022-12-14 10:47:01,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:47:01,256 INFO L93 Difference]: Finished difference Result 131 states and 145 transitions. [2022-12-14 10:47:01,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-14 10:47:01,257 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 [2022-12-14 10:47:01,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:47:01,258 INFO L225 Difference]: With dead ends: 131 [2022-12-14 10:47:01,258 INFO L226 Difference]: Without dead ends: 131 [2022-12-14 10:47:01,258 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=307, Unknown=0, NotChecked=0, Total=380 [2022-12-14 10:47:01,258 INFO L413 NwaCegarLoop]: 66 mSDtfsCounter, 33 mSDsluCounter, 360 mSDsCounter, 0 mSdLazyCounter, 396 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 426 SdHoareTripleChecker+Invalid, 407 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 396 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-12-14 10:47:01,258 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 426 Invalid, 407 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 396 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-12-14 10:47:01,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2022-12-14 10:47:01,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 131. [2022-12-14 10:47:01,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 93 states have (on average 1.4086021505376345) internal successors, (131), 118 states have internal predecessors, (131), 7 states have call successors, (7), 7 states have call predecessors, (7), 6 states have return successors, (7), 5 states have call predecessors, (7), 7 states have call successors, (7) [2022-12-14 10:47:01,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 145 transitions. [2022-12-14 10:47:01,261 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 145 transitions. Word has length 19 [2022-12-14 10:47:01,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:47:01,262 INFO L495 AbstractCegarLoop]: Abstraction has 131 states and 145 transitions. [2022-12-14 10:47:01,262 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) [2022-12-14 10:47:01,262 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 145 transitions. [2022-12-14 10:47:01,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-12-14 10:47:01,262 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:47:01,262 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] [2022-12-14 10:47:01,271 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30fedb40-a0b9-4db9-90fc-082cefc5fb5f/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Ended with exit code 0 [2022-12-14 10:47:01,463 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30fedb40-a0b9-4db9-90fc-082cefc5fb5f/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 10:47:01,464 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)] === [2022-12-14 10:47:01,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:47:01,465 INFO L85 PathProgramCache]: Analyzing trace with hash -1965497160, now seen corresponding path program 1 times [2022-12-14 10:47:01,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 10:47:01,466 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [64018473] [2022-12-14 10:47:01,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:47:01,466 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 10:47:01,466 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30fedb40-a0b9-4db9-90fc-082cefc5fb5f/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 10:47:01,467 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30fedb40-a0b9-4db9-90fc-082cefc5fb5f/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 10:47:01,468 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30fedb40-a0b9-4db9-90fc-082cefc5fb5f/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2022-12-14 10:47:01,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:47:01,623 INFO L263 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 20 conjunts are in the unsatisfiable core [2022-12-14 10:47:01,625 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:47:01,629 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-12-14 10:47:01,633 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-14 10:47:01,679 WARN L859 $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 [2022-12-14 10:47:01,695 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-14 10:47:01,727 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:47:01,727 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-12-14 10:47:01,735 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-12-14 10:47:01,735 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-12-14 10:47:01,785 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:47:01,785 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 10:47:04,145 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 10:47:04,145 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [64018473] [2022-12-14 10:47:04,145 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [64018473] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 10:47:04,145 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [393573614] [2022-12-14 10:47:04,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:47:04,146 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-12-14 10:47:04,146 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30fedb40-a0b9-4db9-90fc-082cefc5fb5f/bin/utaipan-gh47qXpMRh/cvc4 [2022-12-14 10:47:04,147 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30fedb40-a0b9-4db9-90fc-082cefc5fb5f/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-12-14 10:47:04,147 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30fedb40-a0b9-4db9-90fc-082cefc5fb5f/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (16)] Waiting until timeout for monitored process [2022-12-14 10:47:04,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:47:04,444 INFO L263 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 35 conjunts are in the unsatisfiable core [2022-12-14 10:47:04,447 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:47:04,451 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-12-14 10:47:04,458 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-14 10:47:04,622 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-14 10:47:04,884 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:47:04,885 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-12-14 10:47:04,894 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-12-14 10:47:04,895 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-12-14 10:47:04,906 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:47:04,906 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 10:47:05,530 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [393573614] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 10:47:05,531 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [235998435] [2022-12-14 10:47:05,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:47:05,531 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 10:47:05,531 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30fedb40-a0b9-4db9-90fc-082cefc5fb5f/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 10:47:05,532 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30fedb40-a0b9-4db9-90fc-082cefc5fb5f/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 10:47:05,533 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30fedb40-a0b9-4db9-90fc-082cefc5fb5f/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-12-14 10:47:05,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:47:05,622 INFO L263 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 31 conjunts are in the unsatisfiable core [2022-12-14 10:47:05,624 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:47:05,628 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-12-14 10:47:05,632 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-14 10:47:05,739 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-14 10:47:05,832 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:47:05,833 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-12-14 10:47:05,844 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-12-14 10:47:05,845 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-12-14 10:47:05,861 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:47:05,861 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 10:47:06,810 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [235998435] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 10:47:06,810 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 10:47:06,810 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 12, 11] total 13 [2022-12-14 10:47:06,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391319046] [2022-12-14 10:47:06,810 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 10:47:06,811 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-12-14 10:47:06,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 10:47:06,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-12-14 10:47:06,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=262, Unknown=4, NotChecked=32, Total=342 [2022-12-14 10:47:06,812 INFO L87 Difference]: Start difference. First operand 131 states and 145 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) [2022-12-14 10:47:09,633 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-14 10:47:13,699 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-14 10:47:16,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:47:16,278 INFO L93 Difference]: Finished difference Result 146 states and 164 transitions. [2022-12-14 10:47:16,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-12-14 10:47:16,279 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 [2022-12-14 10:47:16,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:47:16,279 INFO L225 Difference]: With dead ends: 146 [2022-12-14 10:47:16,279 INFO L226 Difference]: Without dead ends: 146 [2022-12-14 10:47:16,280 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 79 SyntacticMatches, 4 SemanticMatches, 23 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 7.8s TimeCoverageRelationStatistics Valid=80, Invalid=470, Unknown=6, NotChecked=44, Total=600 [2022-12-14 10:47:16,280 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 64 mSDsluCounter, 342 mSDsCounter, 0 mSdLazyCounter, 412 mSolverCounterSat, 6 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 394 SdHoareTripleChecker+Invalid, 506 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 412 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 86 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2022-12-14 10:47:16,280 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 394 Invalid, 506 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 412 Invalid, 2 Unknown, 86 Unchecked, 5.0s Time] [2022-12-14 10:47:16,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2022-12-14 10:47:16,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 139. [2022-12-14 10:47:16,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 99 states have (on average 1.393939393939394) internal successors, (138), 123 states have internal predecessors, (138), 8 states have call successors, (8), 8 states have call predecessors, (8), 7 states have return successors, (9), 7 states have call predecessors, (9), 8 states have call successors, (9) [2022-12-14 10:47:16,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 155 transitions. [2022-12-14 10:47:16,283 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 155 transitions. Word has length 29 [2022-12-14 10:47:16,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:47:16,283 INFO L495 AbstractCegarLoop]: Abstraction has 139 states and 155 transitions. [2022-12-14 10:47:16,283 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) [2022-12-14 10:47:16,283 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 155 transitions. [2022-12-14 10:47:16,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-12-14 10:47:16,284 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:47:16,284 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] [2022-12-14 10:47:16,293 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30fedb40-a0b9-4db9-90fc-082cefc5fb5f/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Ended with exit code 0 [2022-12-14 10:47:16,500 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30fedb40-a0b9-4db9-90fc-082cefc5fb5f/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2022-12-14 10:47:16,693 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30fedb40-a0b9-4db9-90fc-082cefc5fb5f/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (16)] Forceful destruction successful, exit code 0 [2022-12-14 10:47:16,885 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30fedb40-a0b9-4db9-90fc-082cefc5fb5f/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30fedb40-a0b9-4db9-90fc-082cefc5fb5f/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30fedb40-a0b9-4db9-90fc-082cefc5fb5f/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt [2022-12-14 10:47:16,886 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)] === [2022-12-14 10:47:16,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:47:16,888 INFO L85 PathProgramCache]: Analyzing trace with hash 1572542800, now seen corresponding path program 1 times [2022-12-14 10:47:16,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 10:47:16,889 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [591816290] [2022-12-14 10:47:16,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:47:16,889 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 10:47:16,889 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30fedb40-a0b9-4db9-90fc-082cefc5fb5f/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 10:47:16,890 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30fedb40-a0b9-4db9-90fc-082cefc5fb5f/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 10:47:16,891 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30fedb40-a0b9-4db9-90fc-082cefc5fb5f/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2022-12-14 10:47:17,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:47:17,194 INFO L263 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 29 conjunts are in the unsatisfiable core [2022-12-14 10:47:17,196 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:47:17,218 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-14 10:47:17,406 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:47:17,406 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 [2022-12-14 10:47:17,419 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-12-14 10:47:17,419 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-12-14 10:47:17,539 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:47:17,539 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 10:47:20,922 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 [2022-12-14 10:47:20,999 INFO L321 Elim1Store]: treesize reduction 7, result has 77.4 percent of original size [2022-12-14 10:47:20,999 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 [2022-12-14 10:47:21,579 INFO L321 Elim1Store]: treesize reduction 7, result has 30.0 percent of original size [2022-12-14 10:47:21,579 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 [2022-12-14 10:47:21,721 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 10:47:21,721 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [591816290] [2022-12-14 10:47:21,721 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [591816290] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 10:47:21,721 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [667568153] [2022-12-14 10:47:21,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:47:21,722 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-12-14 10:47:21,722 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30fedb40-a0b9-4db9-90fc-082cefc5fb5f/bin/utaipan-gh47qXpMRh/cvc4 [2022-12-14 10:47:21,722 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30fedb40-a0b9-4db9-90fc-082cefc5fb5f/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-12-14 10:47:21,723 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30fedb40-a0b9-4db9-90fc-082cefc5fb5f/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (19)] Waiting until timeout for monitored process [2022-12-14 10:47:22,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:47:22,162 INFO L263 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 39 conjunts are in the unsatisfiable core [2022-12-14 10:47:22,164 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:47:22,169 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-14 10:47:22,174 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-12-14 10:47:22,519 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-14 10:47:22,729 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:47:22,730 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-12-14 10:47:22,740 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-12-14 10:47:22,740 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-12-14 10:47:22,907 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:47:22,908 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-12-14 10:47:22,917 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-12-14 10:47:22,918 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-12-14 10:47:23,156 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:47:23,156 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 10:47:36,370 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 10:47:36,370 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 [2022-12-14 10:47:37,032 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [667568153] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 10:47:37,032 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [452388104] [2022-12-14 10:47:37,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:47:37,033 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 10:47:37,033 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30fedb40-a0b9-4db9-90fc-082cefc5fb5f/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 10:47:37,034 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30fedb40-a0b9-4db9-90fc-082cefc5fb5f/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 10:47:37,035 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30fedb40-a0b9-4db9-90fc-082cefc5fb5f/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-12-14 10:47:37,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:47:37,144 INFO L263 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 28 conjunts are in the unsatisfiable core [2022-12-14 10:47:37,145 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:47:37,227 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:47:37,228 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 [2022-12-14 10:47:37,237 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-12-14 10:47:37,237 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-12-14 10:47:37,268 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:47:37,268 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 10:47:39,607 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 [2022-12-14 10:47:40,023 INFO L321 Elim1Store]: treesize reduction 7, result has 30.0 percent of original size [2022-12-14 10:47:40,024 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 [2022-12-14 10:47:40,051 INFO L321 Elim1Store]: treesize reduction 7, result has 30.0 percent of original size [2022-12-14 10:47:40,051 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 [2022-12-14 10:47:40,070 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:47:40,070 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [452388104] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 10:47:40,070 INFO L184 FreeRefinementEngine]: Found 0 perfect and 4 imperfect interpolant sequences. [2022-12-14 10:47:40,070 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14, 14] total 33 [2022-12-14 10:47:40,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639166645] [2022-12-14 10:47:40,070 INFO L85 oduleStraightlineAll]: Using 4 imperfect interpolants to construct interpolant automaton [2022-12-14 10:47:40,070 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-12-14 10:47:40,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 10:47:40,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-12-14 10:47:40,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=1352, Unknown=2, NotChecked=0, Total=1482 [2022-12-14 10:47:40,072 INFO L87 Difference]: Start difference. First operand 139 states and 155 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) [2022-12-14 10:48:06,220 WARN L233 SmtUtils]: Spent 22.05s on a formula simplification. DAG size of input: 63 DAG size of output: 49 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 10:48:08,227 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2022-12-14 10:48:10,229 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2022-12-14 10:48:12,462 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2022-12-14 10:48:14,253 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2022-12-14 10:48:16,274 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2022-12-14 10:48:19,153 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2022-12-14 10:48:21,155 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2022-12-14 10:48:23,158 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2022-12-14 10:48:26,389 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2022-12-14 10:48:30,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:48:30,451 INFO L93 Difference]: Finished difference Result 252 states and 272 transitions. [2022-12-14 10:48:30,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-12-14 10:48:30,452 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 [2022-12-14 10:48:30,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:48:30,452 INFO L225 Difference]: With dead ends: 252 [2022-12-14 10:48:30,453 INFO L226 Difference]: Without dead ends: 252 [2022-12-14 10:48:30,453 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 126 SyntacticMatches, 4 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 907 ImplicationChecksByTransitivity, 47.9s TimeCoverageRelationStatistics Valid=419, Invalid=3239, Unknown=2, NotChecked=0, Total=3660 [2022-12-14 10:48:30,454 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 566 mSDsluCounter, 622 mSDsCounter, 0 mSdLazyCounter, 1456 mSolverCounterSat, 90 mSolverCounterUnsat, 14 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 568 SdHoareTripleChecker+Valid, 662 SdHoareTripleChecker+Invalid, 1560 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 1456 IncrementalHoareTripleChecker+Invalid, 14 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22.7s IncrementalHoareTripleChecker+Time [2022-12-14 10:48:30,454 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [568 Valid, 662 Invalid, 1560 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 1456 Invalid, 14 Unknown, 0 Unchecked, 22.7s Time] [2022-12-14 10:48:30,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2022-12-14 10:48:30,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 167. [2022-12-14 10:48:30,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 124 states have (on average 1.3387096774193548) internal successors, (166), 148 states have internal predecessors, (166), 10 states have call successors, (10), 10 states have call predecessors, (10), 9 states have return successors, (11), 8 states have call predecessors, (11), 10 states have call successors, (11) [2022-12-14 10:48:30,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 187 transitions. [2022-12-14 10:48:30,458 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 187 transitions. Word has length 36 [2022-12-14 10:48:30,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:48:30,458 INFO L495 AbstractCegarLoop]: Abstraction has 167 states and 187 transitions. [2022-12-14 10:48:30,458 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) [2022-12-14 10:48:30,458 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 187 transitions. [2022-12-14 10:48:30,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-12-14 10:48:30,459 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:48:30,459 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] [2022-12-14 10:48:30,463 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30fedb40-a0b9-4db9-90fc-082cefc5fb5f/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (19)] Ended with exit code 0 [2022-12-14 10:48:30,665 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30fedb40-a0b9-4db9-90fc-082cefc5fb5f/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-12-14 10:48:30,872 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30fedb40-a0b9-4db9-90fc-082cefc5fb5f/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2022-12-14 10:48:31,060 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30fedb40-a0b9-4db9-90fc-082cefc5fb5f/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30fedb40-a0b9-4db9-90fc-082cefc5fb5f/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30fedb40-a0b9-4db9-90fc-082cefc5fb5f/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 10:48:31,061 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)] === [2022-12-14 10:48:31,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:48:31,062 INFO L85 PathProgramCache]: Analyzing trace with hash 1746009876, now seen corresponding path program 1 times [2022-12-14 10:48:31,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 10:48:31,064 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [981352886] [2022-12-14 10:48:31,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:48:31,065 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 10:48:31,065 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30fedb40-a0b9-4db9-90fc-082cefc5fb5f/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 10:48:31,066 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30fedb40-a0b9-4db9-90fc-082cefc5fb5f/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 10:48:31,067 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30fedb40-a0b9-4db9-90fc-082cefc5fb5f/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2022-12-14 10:48:31,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:48:31,457 INFO L263 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 75 conjunts are in the unsatisfiable core [2022-12-14 10:48:31,461 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:48:31,465 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-12-14 10:48:31,526 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 [2022-12-14 10:48:31,533 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 [2022-12-14 10:48:31,568 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:48:31,569 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 [2022-12-14 10:48:31,576 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:48:31,576 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 [2022-12-14 10:48:31,632 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 10:48:31,632 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2022-12-14 10:48:31,738 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 [2022-12-14 10:48:31,747 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-12-14 10:48:31,762 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 [2022-12-14 10:48:31,768 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 7 treesize of output 3 [2022-12-14 10:48:32,836 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 [2022-12-14 10:48:32,884 INFO L321 Elim1Store]: treesize reduction 46, result has 19.3 percent of original size [2022-12-14 10:48:32,885 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 [2022-12-14 10:48:32,891 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 [2022-12-14 10:48:32,899 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 [2022-12-14 10:48:33,177 INFO L321 Elim1Store]: treesize reduction 56, result has 35.6 percent of original size [2022-12-14 10:48:33,177 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 [2022-12-14 10:48:33,371 INFO L321 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-12-14 10:48:33,371 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 [2022-12-14 10:48:33,639 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 [2022-12-14 10:48:33,861 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:48:33,861 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 10:48:34,258 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_960 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| |c_create_sub_list_insert_sub_~sub~0#1.base| v_ArrVal_960) |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 [2022-12-14 10:48:35,468 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 10:48:35,468 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [981352886] [2022-12-14 10:48:35,468 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [981352886] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 10:48:35,468 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1342906275] [2022-12-14 10:48:35,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:48:35,468 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-12-14 10:48:35,468 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30fedb40-a0b9-4db9-90fc-082cefc5fb5f/bin/utaipan-gh47qXpMRh/cvc4 [2022-12-14 10:48:35,469 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30fedb40-a0b9-4db9-90fc-082cefc5fb5f/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-12-14 10:48:35,470 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30fedb40-a0b9-4db9-90fc-082cefc5fb5f/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (22)] Waiting until timeout for monitored process [2022-12-14 10:48:36,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:48:36,077 INFO L263 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 79 conjunts are in the unsatisfiable core [2022-12-14 10:48:36,083 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:48:36,089 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-12-14 10:48:36,122 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 [2022-12-14 10:48:36,129 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 [2022-12-14 10:48:36,149 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:48:36,149 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 [2022-12-14 10:48:36,159 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:48:36,160 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 [2022-12-14 10:48:36,213 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 10:48:36,214 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2022-12-14 10:48:36,265 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 [2022-12-14 10:48:36,285 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 [2022-12-14 10:48:36,302 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 [2022-12-14 10:48:36,307 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 [2022-12-14 10:48:36,975 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 [2022-12-14 10:48:37,014 INFO L321 Elim1Store]: treesize reduction 46, result has 19.3 percent of original size [2022-12-14 10:48:37,014 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 [2022-12-14 10:48:37,020 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 132 treesize of output 96 [2022-12-14 10:48:37,027 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 24 [2022-12-14 10:48:37,343 INFO L321 Elim1Store]: treesize reduction 56, result has 35.6 percent of original size [2022-12-14 10:48:37,344 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 [2022-12-14 10:48:37,578 INFO L321 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-12-14 10:48:37,579 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 [2022-12-14 10:48:37,622 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 [2022-12-14 10:48:37,758 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:48:37,758 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 10:48:39,973 WARN L837 $PredicateComparison]: unable to prove that (forall ((|v_create_sub_list_insert_sub_~sub~0#1.base_35| (_ BitVec 32)) (v_ArrVal_1082 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1081 (_ BitVec 1))) (or (not (= (_ bv0 1) (select |c_#valid| |v_create_sub_list_insert_sub_~sub~0#1.base_35|))) (= (_ bv0 1) (bvadd (select (store |c_#valid| |v_create_sub_list_insert_sub_~sub~0#1.base_35| v_ArrVal_1081) (select (select (store |c_#memory_$Pointer$.base| |v_create_sub_list_insert_sub_~sub~0#1.base_35| v_ArrVal_1082) |c_create_sub_list_~sub#1.base|) (bvadd (_ bv4 32) |c_create_sub_list_~sub#1.offset|))) (_ bv1 1))))) is different from false [2022-12-14 10:48:41,039 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1342906275] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 10:48:41,039 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [982127537] [2022-12-14 10:48:41,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:48:41,040 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 10:48:41,040 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30fedb40-a0b9-4db9-90fc-082cefc5fb5f/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 10:48:41,040 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30fedb40-a0b9-4db9-90fc-082cefc5fb5f/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 10:48:41,041 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30fedb40-a0b9-4db9-90fc-082cefc5fb5f/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-12-14 10:48:41,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:48:41,178 INFO L263 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 83 conjunts are in the unsatisfiable core [2022-12-14 10:48:41,182 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:48:41,186 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-12-14 10:48:41,193 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-14 10:48:41,551 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 [2022-12-14 10:48:41,558 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 [2022-12-14 10:48:41,718 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 [2022-12-14 10:48:41,726 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:48:41,727 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 [2022-12-14 10:48:41,734 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:48:41,735 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 [2022-12-14 10:48:41,779 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 10:48:41,779 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2022-12-14 10:48:41,834 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 [2022-12-14 10:48:41,859 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 [2022-12-14 10:48:41,877 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 [2022-12-14 10:48:41,883 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 [2022-12-14 10:48:42,555 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 [2022-12-14 10:48:42,604 INFO L321 Elim1Store]: treesize reduction 46, result has 19.3 percent of original size [2022-12-14 10:48:42,604 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 [2022-12-14 10:48:42,611 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 [2022-12-14 10:48:42,619 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 [2022-12-14 10:48:42,949 INFO L321 Elim1Store]: treesize reduction 56, result has 35.6 percent of original size [2022-12-14 10:48:42,949 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 [2022-12-14 10:48:43,202 INFO L321 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-12-14 10:48:43,202 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 [2022-12-14 10:48:43,758 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 [2022-12-14 10:48:44,143 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:48:44,143 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 10:48:48,343 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [982127537] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 10:48:48,343 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 10:48:48,344 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 22] total 35 [2022-12-14 10:48:48,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351120123] [2022-12-14 10:48:48,344 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 10:48:48,344 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-12-14 10:48:48,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 10:48:48,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-12-14 10:48:48,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=159, Invalid=1950, Unknown=61, NotChecked=182, Total=2352 [2022-12-14 10:48:48,345 INFO L87 Difference]: Start difference. First operand 167 states and 187 transitions. Second operand has 36 states, 33 states have (on average 1.6666666666666667) internal successors, (55), 31 states have internal predecessors, (55), 5 states have call successors, (5), 5 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2022-12-14 10:48:57,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:48:57,169 INFO L93 Difference]: Finished difference Result 182 states and 202 transitions. [2022-12-14 10:48:57,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-12-14 10:48:57,170 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 33 states have (on average 1.6666666666666667) internal successors, (55), 31 states have internal predecessors, (55), 5 states have call successors, (5), 5 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) Word has length 35 [2022-12-14 10:48:57,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:48:57,171 INFO L225 Difference]: With dead ends: 182 [2022-12-14 10:48:57,171 INFO L226 Difference]: Without dead ends: 182 [2022-12-14 10:48:57,172 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 88 SyntacticMatches, 9 SemanticMatches, 65 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 966 ImplicationChecksByTransitivity, 14.9s TimeCoverageRelationStatistics Valid=361, Invalid=3712, Unknown=95, NotChecked=254, Total=4422 [2022-12-14 10:48:57,172 INFO L413 NwaCegarLoop]: 68 mSDtfsCounter, 83 mSDsluCounter, 877 mSDsCounter, 0 mSdLazyCounter, 1126 mSolverCounterSat, 26 mSolverCounterUnsat, 20 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 945 SdHoareTripleChecker+Invalid, 1172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 1126 IncrementalHoareTripleChecker+Invalid, 20 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2022-12-14 10:48:57,172 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 945 Invalid, 1172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 1126 Invalid, 20 Unknown, 0 Unchecked, 4.4s Time] [2022-12-14 10:48:57,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2022-12-14 10:48:57,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 181. [2022-12-14 10:48:57,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 136 states have (on average 1.3161764705882353) internal successors, (179), 161 states have internal predecessors, (179), 11 states have call successors, (11), 11 states have call predecessors, (11), 10 states have return successors, (12), 8 states have call predecessors, (12), 11 states have call successors, (12) [2022-12-14 10:48:57,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 202 transitions. [2022-12-14 10:48:57,176 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 202 transitions. Word has length 35 [2022-12-14 10:48:57,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:48:57,176 INFO L495 AbstractCegarLoop]: Abstraction has 181 states and 202 transitions. [2022-12-14 10:48:57,176 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 33 states have (on average 1.6666666666666667) internal successors, (55), 31 states have internal predecessors, (55), 5 states have call successors, (5), 5 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2022-12-14 10:48:57,176 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 202 transitions. [2022-12-14 10:48:57,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-12-14 10:48:57,176 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:48:57,176 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] [2022-12-14 10:48:57,182 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30fedb40-a0b9-4db9-90fc-082cefc5fb5f/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2022-12-14 10:48:57,391 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30fedb40-a0b9-4db9-90fc-082cefc5fb5f/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2022-12-14 10:48:57,585 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30fedb40-a0b9-4db9-90fc-082cefc5fb5f/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (22)] Ended with exit code 0 [2022-12-14 10:48:57,778 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30fedb40-a0b9-4db9-90fc-082cefc5fb5f/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30fedb40-a0b9-4db9-90fc-082cefc5fb5f/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30fedb40-a0b9-4db9-90fc-082cefc5fb5f/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt [2022-12-14 10:48:57,779 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)] === [2022-12-14 10:48:57,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:48:57,780 INFO L85 PathProgramCache]: Analyzing trace with hash 1746009877, now seen corresponding path program 1 times [2022-12-14 10:48:57,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 10:48:57,781 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [683548653] [2022-12-14 10:48:57,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:48:57,782 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 10:48:57,782 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30fedb40-a0b9-4db9-90fc-082cefc5fb5f/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 10:48:57,784 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30fedb40-a0b9-4db9-90fc-082cefc5fb5f/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 10:48:57,787 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30fedb40-a0b9-4db9-90fc-082cefc5fb5f/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2022-12-14 10:48:58,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:48:58,149 INFO L263 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 95 conjunts are in the unsatisfiable core [2022-12-14 10:48:58,155 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:48:58,160 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-12-14 10:48:58,209 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 [2022-12-14 10:48:58,215 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 [2022-12-14 10:48:58,251 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:48:58,252 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 [2022-12-14 10:48:58,260 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:48:58,260 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 [2022-12-14 10:48:58,296 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 10:48:58,297 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2022-12-14 10:48:58,322 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 [2022-12-14 10:48:58,422 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 [2022-12-14 10:48:58,441 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 [2022-12-14 10:48:58,457 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 [2022-12-14 10:48:58,462 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 [2022-12-14 10:49:00,228 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 [2022-12-14 10:49:00,236 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:49:00,241 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 [2022-12-14 10:49:00,248 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 73 treesize of output 38 [2022-12-14 10:49:00,294 INFO L321 Elim1Store]: treesize reduction 34, result has 24.4 percent of original size [2022-12-14 10:49:00,295 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 [2022-12-14 10:49:00,301 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:49:00,301 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 [2022-12-14 10:49:00,336 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:49:00,337 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 [2022-12-14 10:49:00,617 INFO L321 Elim1Store]: treesize reduction 19, result has 47.2 percent of original size [2022-12-14 10:49:00,617 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 [2022-12-14 10:49:00,659 INFO L321 Elim1Store]: treesize reduction 12, result has 52.0 percent of original size [2022-12-14 10:49:00,659 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 [2022-12-14 10:49:00,865 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 [2022-12-14 10:49:00,886 INFO L321 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-12-14 10:49:00,886 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 74 treesize of output 64 [2022-12-14 10:49:01,227 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 [2022-12-14 10:49:01,233 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 [2022-12-14 10:49:01,486 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:49:01,486 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 10:49:02,586 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv4 32) |c_create_sub_list_insert_sub_~head#1.offset|))) (and (forall ((v_ArrVal_1334 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$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 [2022-12-14 10:49:11,060 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 10:49:11,060 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [683548653] [2022-12-14 10:49:11,060 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [683548653] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 10:49:11,060 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [50123681] [2022-12-14 10:49:11,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:49:11,060 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-12-14 10:49:11,060 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30fedb40-a0b9-4db9-90fc-082cefc5fb5f/bin/utaipan-gh47qXpMRh/cvc4 [2022-12-14 10:49:11,061 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30fedb40-a0b9-4db9-90fc-082cefc5fb5f/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-12-14 10:49:11,062 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30fedb40-a0b9-4db9-90fc-082cefc5fb5f/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (25)] Waiting until timeout for monitored process [2022-12-14 10:49:12,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:49:12,060 INFO L263 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 100 conjunts are in the unsatisfiable core [2022-12-14 10:49:12,068 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:49:12,072 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 0 case distinctions, treesize of input 6 treesize of output 7 [2022-12-14 10:49:12,099 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 [2022-12-14 10:49:12,107 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 [2022-12-14 10:49:12,124 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:49:12,125 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 [2022-12-14 10:49:12,132 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:49:12,132 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 [2022-12-14 10:49:12,146 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-14 10:49:12,187 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 10:49:12,188 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2022-12-14 10:49:12,286 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 [2022-12-14 10:49:12,294 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 [2022-12-14 10:49:12,313 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 [2022-12-14 10:49:12,317 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 [2022-12-14 10:49:16,512 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 133 treesize of output 86 [2022-12-14 10:49:16,676 INFO L321 Elim1Store]: treesize reduction 46, result has 19.3 percent of original size [2022-12-14 10:49:16,676 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 162 treesize of output 188 [2022-12-14 10:49:16,683 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 192 treesize of output 144 [2022-12-14 10:49:16,690 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 97 treesize of output 62 [2022-12-14 10:49:16,698 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:49:16,702 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 [2022-12-14 10:49:16,738 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:49:16,738 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 [2022-12-14 10:49:17,381 INFO L321 Elim1Store]: treesize reduction 19, result has 47.2 percent of original size [2022-12-14 10:49:17,381 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 [2022-12-14 10:49:17,422 INFO L321 Elim1Store]: treesize reduction 12, result has 52.0 percent of original size [2022-12-14 10:49:17,423 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 [2022-12-14 10:49:17,746 INFO L321 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-12-14 10:49:17,746 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 74 treesize of output 64 [2022-12-14 10:49:17,759 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 [2022-12-14 10:49:17,795 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 [2022-12-14 10:49:17,804 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 [2022-12-14 10:49:18,046 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:49:18,046 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 10:49:18,154 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv4 32) |c_create_sub_list_insert_sub_~head#1.offset|))) (and (forall ((v_ArrVal_1475 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$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 [2022-12-14 10:49:28,398 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [50123681] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 10:49:28,398 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1807494815] [2022-12-14 10:49:28,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:49:28,398 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 10:49:28,398 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30fedb40-a0b9-4db9-90fc-082cefc5fb5f/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 10:49:28,399 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30fedb40-a0b9-4db9-90fc-082cefc5fb5f/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 10:49:28,400 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30fedb40-a0b9-4db9-90fc-082cefc5fb5f/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2022-12-14 10:49:28,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:49:28,562 INFO L263 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 102 conjunts are in the unsatisfiable core [2022-12-14 10:49:28,566 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:49:28,570 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-14 10:49:28,576 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-12-14 10:49:29,543 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 [2022-12-14 10:49:29,553 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 [2022-12-14 10:49:29,871 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:49:29,872 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 [2022-12-14 10:49:29,879 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:49:29,880 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 [2022-12-14 10:49:29,921 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 10:49:29,921 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2022-12-14 10:49:29,947 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-12-14 10:49:30,260 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:49:30,261 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-12-14 10:49:30,297 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:49:30,298 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 [2022-12-14 10:49:30,318 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 [2022-12-14 10:49:30,322 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 [2022-12-14 10:49:38,708 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 79 [2022-12-14 10:49:38,869 INFO L321 Elim1Store]: treesize reduction 46, result has 19.3 percent of original size [2022-12-14 10:49:38,869 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 152 treesize of output 180 [2022-12-14 10:49:38,877 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 95 treesize of output 60 [2022-12-14 10:49:38,885 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:49:38,885 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 146 treesize of output 102 [2022-12-14 10:49:38,893 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:49:38,899 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:49:38,900 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 [2022-12-14 10:49:38,946 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:49:38,947 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 [2022-12-14 10:49:39,806 INFO L321 Elim1Store]: treesize reduction 26, result has 33.3 percent of original size [2022-12-14 10:49:39,807 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 [2022-12-14 10:49:39,835 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-12-14 10:49:39,835 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 [2022-12-14 10:49:40,287 INFO L321 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-12-14 10:49:40,288 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 66 treesize of output 58 [2022-12-14 10:49:40,305 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 [2022-12-14 10:49:41,494 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2022-12-14 10:49:41,500 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-12-14 10:49:42,436 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:49:42,437 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 10:49:42,543 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse0 (bvadd (_ bv4 32) |c_create_sub_list_insert_sub_~head#1.offset|))) (and (forall ((v_ArrVal_1618 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1617 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv4 32) (select (select (store |c_#memory_$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 [2022-12-14 10:50:00,624 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1807494815] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 10:50:00,624 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 10:50:00,624 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 50 [2022-12-14 10:50:00,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106811907] [2022-12-14 10:50:00,624 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 10:50:00,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2022-12-14 10:50:00,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 10:50:00,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2022-12-14 10:50:00,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=232, Invalid=3489, Unknown=73, NotChecked=366, Total=4160 [2022-12-14 10:50:00,626 INFO L87 Difference]: Start difference. First operand 181 states and 202 transitions. Second operand has 51 states, 48 states have (on average 1.5625) internal successors, (75), 45 states have internal predecessors, (75), 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) [2022-12-14 10:50:17,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:50:17,915 INFO L93 Difference]: Finished difference Result 181 states and 201 transitions. [2022-12-14 10:50:17,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-12-14 10:50:17,916 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 48 states have (on average 1.5625) internal successors, (75), 45 states have internal predecessors, (75), 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 [2022-12-14 10:50:17,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:50:17,916 INFO L225 Difference]: With dead ends: 181 [2022-12-14 10:50:17,916 INFO L226 Difference]: Without dead ends: 181 [2022-12-14 10:50:17,917 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 80 SyntacticMatches, 1 SemanticMatches, 75 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 1554 ImplicationChecksByTransitivity, 52.5s TimeCoverageRelationStatistics Valid=375, Invalid=4958, Unknown=81, NotChecked=438, Total=5852 [2022-12-14 10:50:17,918 INFO L413 NwaCegarLoop]: 69 mSDtfsCounter, 81 mSDsluCounter, 1034 mSDsCounter, 0 mSdLazyCounter, 1487 mSolverCounterSat, 23 mSolverCounterUnsat, 23 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 1103 SdHoareTripleChecker+Invalid, 1533 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 1487 IncrementalHoareTripleChecker+Invalid, 23 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.8s IncrementalHoareTripleChecker+Time [2022-12-14 10:50:17,918 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 1103 Invalid, 1533 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 1487 Invalid, 23 Unknown, 0 Unchecked, 7.8s Time] [2022-12-14 10:50:17,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2022-12-14 10:50:17,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 181. [2022-12-14 10:50:17,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 136 states have (on average 1.3088235294117647) internal successors, (178), 161 states have internal predecessors, (178), 11 states have call successors, (11), 11 states have call predecessors, (11), 10 states have return successors, (12), 8 states have call predecessors, (12), 11 states have call successors, (12) [2022-12-14 10:50:17,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 201 transitions. [2022-12-14 10:50:17,921 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 201 transitions. Word has length 35 [2022-12-14 10:50:17,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:50:17,922 INFO L495 AbstractCegarLoop]: Abstraction has 181 states and 201 transitions. [2022-12-14 10:50:17,922 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 48 states have (on average 1.5625) internal successors, (75), 45 states have internal predecessors, (75), 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) [2022-12-14 10:50:17,922 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 201 transitions. [2022-12-14 10:50:17,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-12-14 10:50:17,922 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:50:17,922 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] [2022-12-14 10:50:17,947 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30fedb40-a0b9-4db9-90fc-082cefc5fb5f/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2022-12-14 10:50:18,140 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30fedb40-a0b9-4db9-90fc-082cefc5fb5f/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2022-12-14 10:50:18,342 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30fedb40-a0b9-4db9-90fc-082cefc5fb5f/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (25)] Forceful destruction successful, exit code 0 [2022-12-14 10:50:18,523 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30fedb40-a0b9-4db9-90fc-082cefc5fb5f/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30fedb40-a0b9-4db9-90fc-082cefc5fb5f/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30fedb40-a0b9-4db9-90fc-082cefc5fb5f/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt [2022-12-14 10:50:18,524 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)] === [2022-12-14 10:50:18,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:50:18,525 INFO L85 PathProgramCache]: Analyzing trace with hash -614855375, now seen corresponding path program 1 times [2022-12-14 10:50:18,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 10:50:18,526 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [281041122] [2022-12-14 10:50:18,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:50:18,527 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 10:50:18,527 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30fedb40-a0b9-4db9-90fc-082cefc5fb5f/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 10:50:18,530 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30fedb40-a0b9-4db9-90fc-082cefc5fb5f/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 10:50:18,532 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30fedb40-a0b9-4db9-90fc-082cefc5fb5f/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2022-12-14 10:50:18,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:50:18,836 INFO L263 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 13 conjunts are in the unsatisfiable core [2022-12-14 10:50:18,837 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:50:19,022 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:50:19,022 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 10:50:19,022 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 10:50:19,023 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [281041122] [2022-12-14 10:50:19,023 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [281041122] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:50:19,023 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:50:19,023 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-12-14 10:50:19,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375292040] [2022-12-14 10:50:19,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:50:19,023 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-14 10:50:19,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 10:50:19,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-14 10:50:19,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-12-14 10:50:19,024 INFO L87 Difference]: Start difference. First operand 181 states and 201 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) [2022-12-14 10:50:19,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:50:19,616 INFO L93 Difference]: Finished difference Result 184 states and 198 transitions. [2022-12-14 10:50:19,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-14 10:50:19,617 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 [2022-12-14 10:50:19,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:50:19,618 INFO L225 Difference]: With dead ends: 184 [2022-12-14 10:50:19,618 INFO L226 Difference]: Without dead ends: 184 [2022-12-14 10:50:19,618 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2022-12-14 10:50:19,619 INFO L413 NwaCegarLoop]: 86 mSDtfsCounter, 99 mSDsluCounter, 466 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 552 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-12-14 10:50:19,619 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 552 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-12-14 10:50:19,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2022-12-14 10:50:19,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 181. [2022-12-14 10:50:19,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 136 states have (on average 1.2794117647058822) internal successors, (174), 161 states have internal predecessors, (174), 11 states have call successors, (11), 11 states have call predecessors, (11), 10 states have return successors, (12), 8 states have call predecessors, (12), 11 states have call successors, (12) [2022-12-14 10:50:19,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 197 transitions. [2022-12-14 10:50:19,623 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 197 transitions. Word has length 38 [2022-12-14 10:50:19,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:50:19,623 INFO L495 AbstractCegarLoop]: Abstraction has 181 states and 197 transitions. [2022-12-14 10:50:19,623 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) [2022-12-14 10:50:19,623 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 197 transitions. [2022-12-14 10:50:19,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-12-14 10:50:19,623 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:50:19,623 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] [2022-12-14 10:50:19,632 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30fedb40-a0b9-4db9-90fc-082cefc5fb5f/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Ended with exit code 0 [2022-12-14 10:50:19,824 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30fedb40-a0b9-4db9-90fc-082cefc5fb5f/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 10:50:19,825 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)] === [2022-12-14 10:50:19,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:50:19,826 INFO L85 PathProgramCache]: Analyzing trace with hash 879107445, now seen corresponding path program 1 times [2022-12-14 10:50:19,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 10:50:19,827 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2023443667] [2022-12-14 10:50:19,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:50:19,827 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 10:50:19,828 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30fedb40-a0b9-4db9-90fc-082cefc5fb5f/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 10:50:19,830 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30fedb40-a0b9-4db9-90fc-082cefc5fb5f/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 10:50:19,833 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30fedb40-a0b9-4db9-90fc-082cefc5fb5f/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2022-12-14 10:50:20,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:50:20,236 INFO L263 TraceCheckSpWp]: Trace formula consists of 356 conjuncts, 47 conjunts are in the unsatisfiable core [2022-12-14 10:50:20,239 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:50:20,457 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 [2022-12-14 10:50:20,467 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 [2022-12-14 10:50:20,535 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:50:20,536 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 [2022-12-14 10:50:20,549 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:50:20,549 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 [2022-12-14 10:50:20,581 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-12-14 10:50:20,582 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-12-14 10:50:20,681 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 [2022-12-14 10:50:20,691 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 [2022-12-14 10:50:20,927 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-12-14 10:50:20,934 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-12-14 10:50:21,075 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:50:21,075 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 10:50:21,352 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 10:50:21,352 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 [2022-12-14 10:50:21,906 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse0 (bvadd (_ bv4 32) |c_create_sub_list_insert_sub_~head#1.offset|))) (and (forall ((v_ArrVal_1838 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_create_sub_list_insert_sub_~head#1.base| (select (select (store |c_#memory_$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 [2022-12-14 10:50:21,981 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse0 (bvadd (_ bv4 32) |c_create_sub_list_~sub#1.offset|))) (and (forall ((|v_create_sub_list_insert_sub_~sub~0#1.base_50| (_ BitVec 32))) (or (forall ((v_ArrVal_1837 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv4 32) (select (select (store |c_#memory_$Pointer$.offset| |v_create_sub_list_insert_sub_~sub~0#1.base_50| v_ArrVal_1837) |c_create_sub_list_~sub#1.base|) .cse0)) (bvadd (_ bv8 32) |c_create_sub_list_~sub#1.offset|))) (not (= (_ bv0 1) (select |c_#valid| |v_create_sub_list_insert_sub_~sub~0#1.base_50|))))) (forall ((|v_create_sub_list_insert_sub_~sub~0#1.base_50| (_ BitVec 32))) (or (forall ((v_ArrVal_1837 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (select (select (store |c_#memory_$Pointer$.offset| |v_create_sub_list_insert_sub_~sub~0#1.base_50| v_ArrVal_1837) |c_create_sub_list_~sub#1.base|) .cse0))) (bvule .cse1 (bvadd (_ bv4 32) .cse1)))) (not (= (_ bv0 1) (select |c_#valid| |v_create_sub_list_insert_sub_~sub~0#1.base_50|))))) (forall ((|v_create_sub_list_insert_sub_~sub~0#1.base_50| (_ BitVec 32))) (or (forall ((v_ArrVal_1838 (Array (_ BitVec 32) (_ BitVec 32)))) (= (select (select (store |c_#memory_$Pointer$.base| |v_create_sub_list_insert_sub_~sub~0#1.base_50| v_ArrVal_1838) |c_create_sub_list_~sub#1.base|) .cse0) |c_create_sub_list_~sub#1.base|)) (not (= (_ bv0 1) (select |c_#valid| |v_create_sub_list_insert_sub_~sub~0#1.base_50|))))))) is different from false [2022-12-14 10:50:22,551 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 10:50:22,551 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 [2022-12-14 10:50:22,556 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 [2022-12-14 10:50:22,563 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 7 treesize of output 3 [2022-12-14 10:50:22,587 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 10:50:22,587 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 [2022-12-14 10:50:22,590 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 10:50:22,593 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 [2022-12-14 10:50:22,623 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 10:50:22,623 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 [2022-12-14 10:50:22,626 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 10:50:22,629 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 [2022-12-14 10:50:23,721 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 10:50:23,721 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 [2022-12-14 10:50:23,997 INFO L321 Elim1Store]: treesize reduction 7, result has 30.0 percent of original size [2022-12-14 10:50:23,997 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 [2022-12-14 10:50:24,050 INFO L321 Elim1Store]: treesize reduction 7, result has 30.0 percent of original size [2022-12-14 10:50:24,050 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 [2022-12-14 10:50:24,091 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 3 not checked. [2022-12-14 10:50:24,091 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 10:50:24,091 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2023443667] [2022-12-14 10:50:24,091 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2023443667] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 10:50:24,091 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2048525066] [2022-12-14 10:50:24,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:50:24,091 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-12-14 10:50:24,091 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30fedb40-a0b9-4db9-90fc-082cefc5fb5f/bin/utaipan-gh47qXpMRh/cvc4 [2022-12-14 10:50:24,092 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30fedb40-a0b9-4db9-90fc-082cefc5fb5f/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-12-14 10:50:24,093 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30fedb40-a0b9-4db9-90fc-082cefc5fb5f/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (29)] Waiting until timeout for monitored process [2022-12-14 10:50:25,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:50:25,418 INFO L263 TraceCheckSpWp]: Trace formula consists of 356 conjuncts, 65 conjunts are in the unsatisfiable core [2022-12-14 10:50:25,422 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:50:25,427 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-12-14 10:50:25,436 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-14 10:50:25,947 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-14 10:50:26,281 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:50:26,282 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-12-14 10:50:26,300 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-12-14 10:50:26,300 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-12-14 10:50:26,576 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 [2022-12-14 10:50:26,585 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 [2022-12-14 10:50:26,753 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:50:26,754 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 [2022-12-14 10:50:26,767 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:50:26,767 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 [2022-12-14 10:50:26,813 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-12-14 10:50:26,813 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-12-14 10:50:26,823 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 12 treesize of output 14 [2022-12-14 10:50:27,008 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 16 treesize of output 18 [2022-12-14 10:50:27,019 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-12-14 10:50:27,441 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-12-14 10:50:27,451 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-12-14 10:50:27,746 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 1 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:50:27,746 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 10:50:28,576 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv4 32) |c_create_sub_list_insert_sub_~head#1.offset|))) (and (forall ((v_ArrVal_1956 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$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 [2022-12-14 10:50:31,151 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 10:50:31,151 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 [2022-12-14 10:50:31,156 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 94 treesize of output 82 [2022-12-14 10:50:31,177 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 10:50:31,178 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 [2022-12-14 10:50:31,183 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 [2022-12-14 10:50:31,193 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 [2022-12-14 10:50:31,198 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 [2022-12-14 10:50:31,744 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 10:50:31,744 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 [2022-12-14 10:50:31,749 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 [2022-12-14 10:50:31,757 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 [2022-12-14 10:50:43,470 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 10:50:43,471 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 [2022-12-14 10:50:46,487 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2048525066] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 10:50:46,487 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1600153363] [2022-12-14 10:50:46,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:50:46,488 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 10:50:46,488 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30fedb40-a0b9-4db9-90fc-082cefc5fb5f/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 10:50:46,489 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30fedb40-a0b9-4db9-90fc-082cefc5fb5f/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 10:50:46,490 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30fedb40-a0b9-4db9-90fc-082cefc5fb5f/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2022-12-14 10:50:46,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:50:46,643 INFO L263 TraceCheckSpWp]: Trace formula consists of 356 conjuncts, 51 conjunts are in the unsatisfiable core [2022-12-14 10:50:46,646 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:50:46,747 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 [2022-12-14 10:50:46,757 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 [2022-12-14 10:50:46,785 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:50:46,786 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 [2022-12-14 10:50:46,799 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:50:46,800 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 [2022-12-14 10:50:46,845 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-12-14 10:50:46,846 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-12-14 10:50:46,881 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 [2022-12-14 10:50:46,887 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 [2022-12-14 10:50:46,998 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 10:50:46,999 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 [2022-12-14 10:50:47,011 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 10:50:47,012 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 [2022-12-14 10:50:47,221 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:50:47,222 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 10:50:47,294 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 10:50:47,295 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 [2022-12-14 10:50:47,415 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse0 (bvadd (_ bv4 32) |c_create_sub_list_insert_sub_~head#1.offset|))) (and (forall ((v_ArrVal_2074 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv4 32) (select (select (store |c_#memory_$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 [2022-12-14 10:50:58,526 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 10:50:58,527 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 29 treesize of output 35 [2022-12-14 10:50:58,533 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 32 [2022-12-14 10:50:58,543 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 15 treesize of output 11 [2022-12-14 10:50:58,616 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 10:50:58,616 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 [2022-12-14 10:50:58,621 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 [2022-12-14 10:50:58,628 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 [2022-12-14 10:50:58,649 INFO L321 Elim1Store]: treesize reduction 18, result has 5.3 percent of original size [2022-12-14 10:50:58,650 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 1 [2022-12-14 10:50:59,212 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 10:50:59,213 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 [2022-12-14 10:50:59,362 INFO L321 Elim1Store]: treesize reduction 7, result has 30.0 percent of original size [2022-12-14 10:50:59,362 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 [2022-12-14 10:50:59,403 INFO L321 Elim1Store]: treesize reduction 7, result has 30.0 percent of original size [2022-12-14 10:50:59,403 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 [2022-12-14 10:50:59,435 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2022-12-14 10:50:59,435 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1600153363] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 10:50:59,436 INFO L184 FreeRefinementEngine]: Found 0 perfect and 5 imperfect interpolant sequences. [2022-12-14 10:50:59,436 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 18, 18, 17, 18] total 48 [2022-12-14 10:50:59,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851509906] [2022-12-14 10:50:59,436 INFO L85 oduleStraightlineAll]: Using 5 imperfect interpolants to construct interpolant automaton [2022-12-14 10:50:59,436 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2022-12-14 10:50:59,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 10:50:59,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2022-12-14 10:50:59,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=183, Invalid=2656, Unknown=39, NotChecked=428, Total=3306 [2022-12-14 10:50:59,437 INFO L87 Difference]: Start difference. First operand 181 states and 197 transitions. Second operand has 49 states, 43 states have (on average 1.930232558139535) internal successors, (83), 40 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) [2022-12-14 10:51:13,935 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-14 10:51:13,965 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse2 (bvadd (_ bv8 32) |c_create_sub_list_insert_sub_~head#1.offset|)) (.cse0 (bvadd (_ bv4 32) |c_create_sub_list_insert_sub_~head#1.offset|))) (and (exists ((v_ArrVal_1945 (_ BitVec 32)) (|create_sub_list_insert_sub_~sub~0#1.base| (_ BitVec 32))) (and (= |c_#length| (store |c_old(#length)| |create_sub_list_insert_sub_~sub~0#1.base| v_ArrVal_1945)) (= (_ bv0 1) (select |c_old(#valid)| |create_sub_list_insert_sub_~sub~0#1.base|)))) (forall ((v_ArrVal_1838 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_create_sub_list_insert_sub_~head#1.base| (select (select (store |c_#memory_$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$.offset| |c_create_sub_list_insert_sub_~sub~0#1.base| v_ArrVal_1837) |c_create_sub_list_insert_sub_~head#1.base|) .cse0)) .cse2)) (forall ((v_ArrVal_2074 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv4 32) (select (select (store |c_#memory_$Pointer$.offset| |c_create_sub_list_insert_sub_~sub~0#1.base| v_ArrVal_2074) |c_create_sub_list_insert_sub_~head#1.base|) .cse0)) .cse2)) (forall ((v_ArrVal_2074 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (select (select (store |c_#memory_$Pointer$.offset| |c_create_sub_list_insert_sub_~sub~0#1.base| v_ArrVal_2074) |c_create_sub_list_insert_sub_~head#1.base|) .cse0))) (bvule .cse3 (bvadd (_ bv4 32) .cse3)))) (forall ((v_ArrVal_2075 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_create_sub_list_insert_sub_~head#1.base| (select (select (store |c_#memory_$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))) (= |c_create_sub_list_insert_sub_~head#1.base| |c_create_sub_list_#in~sub#1.base|))) is different from false [2022-12-14 10:51:28,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:51:28,868 INFO L93 Difference]: Finished difference Result 263 states and 283 transitions. [2022-12-14 10:51:28,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-12-14 10:51:28,869 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 43 states have (on average 1.930232558139535) internal successors, (83), 40 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 [2022-12-14 10:51:28,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:51:28,869 INFO L225 Difference]: With dead ends: 263 [2022-12-14 10:51:28,869 INFO L226 Difference]: Without dead ends: 263 [2022-12-14 10:51:28,871 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 155 SyntacticMatches, 7 SemanticMatches, 98 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 2391 ImplicationChecksByTransitivity, 52.8s TimeCoverageRelationStatistics Valid=834, Invalid=8071, Unknown=45, NotChecked=950, Total=9900 [2022-12-14 10:51:28,871 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 406 mSDsluCounter, 881 mSDsCounter, 0 mSdLazyCounter, 2112 mSolverCounterSat, 84 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 409 SdHoareTripleChecker+Valid, 921 SdHoareTripleChecker+Invalid, 2694 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 2112 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 492 IncrementalHoareTripleChecker+Unchecked, 10.0s IncrementalHoareTripleChecker+Time [2022-12-14 10:51:28,871 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [409 Valid, 921 Invalid, 2694 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 2112 Invalid, 6 Unknown, 492 Unchecked, 10.0s Time] [2022-12-14 10:51:28,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2022-12-14 10:51:28,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 187. [2022-12-14 10:51:28,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 140 states have (on average 1.2571428571428571) internal successors, (176), 167 states have internal predecessors, (176), 11 states have call successors, (11), 11 states have call predecessors, (11), 12 states have return successors, (12), 8 states have call predecessors, (12), 11 states have call successors, (12) [2022-12-14 10:51:28,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 199 transitions. [2022-12-14 10:51:28,875 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 199 transitions. Word has length 41 [2022-12-14 10:51:28,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:51:28,875 INFO L495 AbstractCegarLoop]: Abstraction has 187 states and 199 transitions. [2022-12-14 10:51:28,875 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 43 states have (on average 1.930232558139535) internal successors, (83), 40 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) [2022-12-14 10:51:28,875 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 199 transitions. [2022-12-14 10:51:28,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-12-14 10:51:28,876 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:51:28,876 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] [2022-12-14 10:51:28,882 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30fedb40-a0b9-4db9-90fc-082cefc5fb5f/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2022-12-14 10:51:29,088 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30fedb40-a0b9-4db9-90fc-082cefc5fb5f/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (29)] Forceful destruction successful, exit code 0 [2022-12-14 10:51:29,313 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30fedb40-a0b9-4db9-90fc-082cefc5fb5f/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (28)] Ended with exit code 0 [2022-12-14 10:51:29,477 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30fedb40-a0b9-4db9-90fc-082cefc5fb5f/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30fedb40-a0b9-4db9-90fc-082cefc5fb5f/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt,28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30fedb40-a0b9-4db9-90fc-082cefc5fb5f/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 10:51:29,478 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)] === [2022-12-14 10:51:29,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:51:29,479 INFO L85 PathProgramCache]: Analyzing trace with hash 1398479560, now seen corresponding path program 1 times [2022-12-14 10:51:29,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 10:51:29,480 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [486340364] [2022-12-14 10:51:29,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:51:29,482 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 10:51:29,482 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30fedb40-a0b9-4db9-90fc-082cefc5fb5f/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 10:51:29,483 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30fedb40-a0b9-4db9-90fc-082cefc5fb5f/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 10:51:29,484 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30fedb40-a0b9-4db9-90fc-082cefc5fb5f/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2022-12-14 10:51:29,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:51:29,786 INFO L263 TraceCheckSpWp]: Trace formula consists of 348 conjuncts, 29 conjunts are in the unsatisfiable core [2022-12-14 10:51:29,789 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:51:29,794 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-12-14 10:51:29,801 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-14 10:51:29,984 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-14 10:51:30,192 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-12-14 10:51:30,193 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-12-14 10:51:30,215 WARN L859 $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 [2022-12-14 10:51:30,284 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-12-14 10:51:30,285 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 [2022-12-14 10:51:30,290 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 [2022-12-14 10:51:30,367 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:51:30,397 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-12-14 10:51:30,397 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 [2022-12-14 10:51:30,418 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-12-14 10:51:30,418 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 [2022-12-14 10:51:30,560 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 5 not checked. [2022-12-14 10:51:30,560 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 10:51:31,084 INFO L321 Elim1Store]: treesize reduction 7, result has 30.0 percent of original size [2022-12-14 10:51:31,084 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 [2022-12-14 10:51:33,491 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 10:51:33,492 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [486340364] [2022-12-14 10:51:33,492 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [486340364] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 10:51:33,492 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2080987917] [2022-12-14 10:51:33,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:51:33,492 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-12-14 10:51:33,492 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30fedb40-a0b9-4db9-90fc-082cefc5fb5f/bin/utaipan-gh47qXpMRh/cvc4 [2022-12-14 10:51:33,493 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30fedb40-a0b9-4db9-90fc-082cefc5fb5f/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-12-14 10:51:33,494 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30fedb40-a0b9-4db9-90fc-082cefc5fb5f/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (32)] Waiting until timeout for monitored process [2022-12-14 10:51:34,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:51:34,125 INFO L263 TraceCheckSpWp]: Trace formula consists of 348 conjuncts, 44 conjunts are in the unsatisfiable core [2022-12-14 10:51:34,127 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:51:34,131 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 7 [2022-12-14 10:51:34,140 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-14 10:51:34,419 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-14 10:51:34,630 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-12-14 10:51:34,630 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-12-14 10:51:34,819 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-12-14 10:51:34,819 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 [2022-12-14 10:51:34,824 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 [2022-12-14 10:51:35,292 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:51:35,320 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-12-14 10:51:35,320 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 [2022-12-14 10:51:35,340 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-12-14 10:51:35,340 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 [2022-12-14 10:51:35,368 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 1 proven. 16 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-14 10:51:35,368 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 10:51:36,100 INFO L321 Elim1Store]: treesize reduction 7, result has 30.0 percent of original size [2022-12-14 10:51:36,100 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 [2022-12-14 10:51:41,136 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2080987917] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 10:51:41,137 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1482383075] [2022-12-14 10:51:41,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:51:41,137 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 10:51:41,137 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30fedb40-a0b9-4db9-90fc-082cefc5fb5f/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 10:51:41,138 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30fedb40-a0b9-4db9-90fc-082cefc5fb5f/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 10:51:41,139 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30fedb40-a0b9-4db9-90fc-082cefc5fb5f/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2022-12-14 10:51:41,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:51:41,297 INFO L263 TraceCheckSpWp]: Trace formula consists of 348 conjuncts, 38 conjunts are in the unsatisfiable core [2022-12-14 10:51:41,300 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:51:41,304 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-14 10:51:41,311 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-12-14 10:51:41,599 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-14 10:51:41,602 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 [2022-12-14 10:51:44,097 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-12-14 10:51:44,097 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 [2022-12-14 10:51:44,118 INFO L321 Elim1Store]: treesize reduction 5, result has 50.0 percent of original size [2022-12-14 10:51:44,118 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 25 [2022-12-14 10:51:46,652 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:51:46,654 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:51:46,687 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-12-14 10:51:46,687 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 [2022-12-14 10:51:46,758 INFO L321 Elim1Store]: treesize reduction 17, result has 45.2 percent of original size [2022-12-14 10:51:46,758 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 31 treesize of output 38 [2022-12-14 10:51:46,825 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 9 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-14 10:51:46,825 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 10:51:49,552 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse0 (bvadd |c_ULTIMATE.start_insert_top_~top~0#1.offset| (_ bv24 32))) (.cse1 (bvadd (_ bv16 32) |c_ULTIMATE.start_insert_top_~top~0#1.offset|))) (and (or (bvule (bvadd |c_ULTIMATE.start_insert_top_~top~0#1.offset| (_ bv20 32)) .cse0) (forall ((v_ArrVal_2401 (_ BitVec 32)) (v_ArrVal_2403 (_ BitVec 32)) (v_ArrVal_2402 (_ BitVec 1)) (|v_create_sub_list_insert_sub_~sub~0#1.base_83| (_ BitVec 32)) (|v_create_sub_list_insert_sub_~sub~0#1.base_84| (_ BitVec 32))) (or (not (= (select (store |c_#valid| |v_create_sub_list_insert_sub_~sub~0#1.base_84| v_ArrVal_2402) |v_create_sub_list_insert_sub_~sub~0#1.base_83|) (_ bv0 1))) (not (= (select |c_#valid| |v_create_sub_list_insert_sub_~sub~0#1.base_84|) (_ bv0 1))) (not (bvule .cse1 (select (store (store |c_#length| |v_create_sub_list_insert_sub_~sub~0#1.base_84| v_ArrVal_2401) |v_create_sub_list_insert_sub_~sub~0#1.base_83| v_ArrVal_2403) |c_ULTIMATE.start_insert_top_~top~0#1.base|)))))) (forall ((|v_create_sub_list_insert_sub_~sub~0#1.base_84| (_ BitVec 32))) (or (not (= (select |c_#valid| |v_create_sub_list_insert_sub_~sub~0#1.base_84|) (_ bv0 1))) (forall ((v_ArrVal_2402 (_ BitVec 1)) (|v_create_sub_list_insert_sub_~sub~0#1.base_83| (_ BitVec 32))) (or (not (= (select (store |c_#valid| |v_create_sub_list_insert_sub_~sub~0#1.base_84| v_ArrVal_2402) |v_create_sub_list_insert_sub_~sub~0#1.base_83|) (_ bv0 1))) (forall ((v_ArrVal_2401 (_ BitVec 32)) (v_ArrVal_2403 (_ BitVec 32))) (let ((.cse2 (select (store (store |c_#length| |v_create_sub_list_insert_sub_~sub~0#1.base_84| v_ArrVal_2401) |v_create_sub_list_insert_sub_~sub~0#1.base_83| v_ArrVal_2403) |c_ULTIMATE.start_insert_top_~top~0#1.base|))) (or (bvule .cse0 .cse2) (not (bvule .cse1 .cse2))))))))))) is different from false [2022-12-14 10:51:49,562 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1482383075] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 10:51:49,562 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 10:51:49,562 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 17, 13] total 25 [2022-12-14 10:51:49,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871596034] [2022-12-14 10:51:49,562 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 10:51:49,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-12-14 10:51:49,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 10:51:49,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-12-14 10:51:49,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=785, Unknown=13, NotChecked=114, Total=992 [2022-12-14 10:51:49,563 INFO L87 Difference]: Start difference. First operand 187 states and 199 transitions. Second operand has 26 states, 24 states have (on average 3.125) internal successors, (75), 23 states have internal predecessors, (75), 8 states have call successors, (8), 3 states have call predecessors, (8), 6 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) [2022-12-14 10:51:58,228 WARN L233 SmtUtils]: Spent 8.17s on a formula simplification. DAG size of input: 52 DAG size of output: 51 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 10:52:07,514 WARN L233 SmtUtils]: Spent 8.22s on a formula simplification. DAG size of input: 68 DAG size of output: 59 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 10:52:16,430 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-14 10:52:21,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:52:21,315 INFO L93 Difference]: Finished difference Result 303 states and 332 transitions. [2022-12-14 10:52:21,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-12-14 10:52:21,316 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 24 states have (on average 3.125) internal successors, (75), 23 states have internal predecessors, (75), 8 states have call successors, (8), 3 states have call predecessors, (8), 6 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) Word has length 45 [2022-12-14 10:52:21,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:52:21,318 INFO L225 Difference]: With dead ends: 303 [2022-12-14 10:52:21,318 INFO L226 Difference]: Without dead ends: 303 [2022-12-14 10:52:21,318 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 115 SyntacticMatches, 2 SemanticMatches, 40 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 299 ImplicationChecksByTransitivity, 41.1s TimeCoverageRelationStatistics Valid=164, Invalid=1389, Unknown=15, NotChecked=154, Total=1722 [2022-12-14 10:52:21,319 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 230 mSDsluCounter, 505 mSDsCounter, 0 mSdLazyCounter, 1136 mSolverCounterSat, 24 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 232 SdHoareTripleChecker+Valid, 542 SdHoareTripleChecker+Invalid, 1302 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 1136 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 141 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2022-12-14 10:52:21,319 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [232 Valid, 542 Invalid, 1302 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 1136 Invalid, 1 Unknown, 141 Unchecked, 5.9s Time] [2022-12-14 10:52:21,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2022-12-14 10:52:21,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 194. [2022-12-14 10:52:21,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194 states, 145 states have (on average 1.2551724137931035) internal successors, (182), 171 states have internal predecessors, (182), 12 states have call successors, (12), 12 states have call predecessors, (12), 13 states have return successors, (14), 10 states have call predecessors, (14), 12 states have call successors, (14) [2022-12-14 10:52:21,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 208 transitions. [2022-12-14 10:52:21,323 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 208 transitions. Word has length 45 [2022-12-14 10:52:21,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:52:21,324 INFO L495 AbstractCegarLoop]: Abstraction has 194 states and 208 transitions. [2022-12-14 10:52:21,324 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 24 states have (on average 3.125) internal successors, (75), 23 states have internal predecessors, (75), 8 states have call successors, (8), 3 states have call predecessors, (8), 6 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) [2022-12-14 10:52:21,324 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 208 transitions. [2022-12-14 10:52:21,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-12-14 10:52:21,324 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:52:21,324 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] [2022-12-14 10:52:21,332 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30fedb40-a0b9-4db9-90fc-082cefc5fb5f/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0 [2022-12-14 10:52:21,542 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30fedb40-a0b9-4db9-90fc-082cefc5fb5f/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (32)] Ended with exit code 0 [2022-12-14 10:52:21,742 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30fedb40-a0b9-4db9-90fc-082cefc5fb5f/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (31)] Forceful destruction successful, exit code 0 [2022-12-14 10:52:21,926 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30fedb40-a0b9-4db9-90fc-082cefc5fb5f/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30fedb40-a0b9-4db9-90fc-082cefc5fb5f/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt,31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30fedb40-a0b9-4db9-90fc-082cefc5fb5f/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 10:52:21,927 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting list_add_tailErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_sub_listErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_sub_listErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_sub_listErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-12-14 10:52:21,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:52:21,928 INFO L85 PathProgramCache]: Analyzing trace with hash 1768276039, now seen corresponding path program 1 times [2022-12-14 10:52:21,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 10:52:21,929 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [268200871] [2022-12-14 10:52:21,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:52:21,930 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 10:52:21,930 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30fedb40-a0b9-4db9-90fc-082cefc5fb5f/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 10:52:21,932 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30fedb40-a0b9-4db9-90fc-082cefc5fb5f/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 10:52:21,933 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30fedb40-a0b9-4db9-90fc-082cefc5fb5f/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (34)] Waiting until timeout for monitored process [2022-12-14 10:52:22,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:52:22,306 INFO L263 TraceCheckSpWp]: Trace formula consists of 390 conjuncts, 20 conjunts are in the unsatisfiable core [2022-12-14 10:52:22,308 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:52:22,314 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-12-14 10:52:22,372 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 10:52:22,372 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2022-12-14 10:52:22,415 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 [2022-12-14 10:52:22,540 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-12-14 10:52:22,738 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:52:22,739 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 [2022-12-14 10:52:22,845 WARN L859 $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 [2022-12-14 10:52:22,856 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-12-14 10:52:23,013 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-12-14 10:52:23,013 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2022-12-14 10:52:23,172 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 2 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 3 not checked. [2022-12-14 10:52:23,172 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 10:52:23,542 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 10:52:23,542 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [268200871] [2022-12-14 10:52:23,542 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [268200871] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 10:52:23,542 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [917572939] [2022-12-14 10:52:23,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:52:23,543 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-12-14 10:52:23,543 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30fedb40-a0b9-4db9-90fc-082cefc5fb5f/bin/utaipan-gh47qXpMRh/cvc4 [2022-12-14 10:52:23,543 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30fedb40-a0b9-4db9-90fc-082cefc5fb5f/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-12-14 10:52:23,544 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30fedb40-a0b9-4db9-90fc-082cefc5fb5f/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (35)] Waiting until timeout for monitored process [2022-12-14 10:52:24,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:52:24,711 INFO L263 TraceCheckSpWp]: Trace formula consists of 390 conjuncts, 22 conjunts are in the unsatisfiable core [2022-12-14 10:52:24,713 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:52:24,767 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 [2022-12-14 10:52:24,792 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-12-14 10:52:24,792 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2022-12-14 10:52:24,905 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:52:24,939 INFO L321 Elim1Store]: treesize reduction 23, result has 32.4 percent of original size [2022-12-14 10:52:24,940 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 2 case distinctions, treesize of input 21 treesize of output 36 [2022-12-14 10:52:25,092 INFO L321 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2022-12-14 10:52:25,092 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 [2022-12-14 10:52:25,212 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_2631 (_ 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_2631) |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 [2022-12-14 10:52:25,250 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-12-14 10:52:25,428 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:52:25,457 INFO L321 Elim1Store]: treesize reduction 23, result has 32.4 percent of original size [2022-12-14 10:52:25,457 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 2 case distinctions, treesize of input 25 treesize of output 40 [2022-12-14 10:52:25,568 INFO L321 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2022-12-14 10:52:25,568 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 [2022-12-14 10:52:25,674 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-12-14 10:52:25,847 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:52:25,880 INFO L321 Elim1Store]: treesize reduction 23, result has 32.4 percent of original size [2022-12-14 10:52:25,881 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 2 case distinctions, treesize of input 30 treesize of output 45 [2022-12-14 10:52:26,352 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 14 trivial. 7 not checked. [2022-12-14 10:52:26,352 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 10:52:26,496 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [917572939] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 10:52:26,496 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [186120291] [2022-12-14 10:52:26,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:52:26,496 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 10:52:26,496 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30fedb40-a0b9-4db9-90fc-082cefc5fb5f/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 10:52:26,497 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30fedb40-a0b9-4db9-90fc-082cefc5fb5f/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 10:52:26,498 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30fedb40-a0b9-4db9-90fc-082cefc5fb5f/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2022-12-14 10:52:26,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:52:26,733 INFO L263 TraceCheckSpWp]: Trace formula consists of 390 conjuncts, 19 conjunts are in the unsatisfiable core [2022-12-14 10:52:26,735 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:52:26,739 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-12-14 10:52:26,828 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 10:52:26,828 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2022-12-14 10:52:26,861 WARN L859 $PredicateComparison]: unable to prove that (exists ((|create_sub_list_insert_sub_~sub~0#1.base| (_ BitVec 32))) (and (exists ((v_ArrVal_2748 (_ BitVec 1))) (= |c_#valid| (store |c_old(#valid)| |create_sub_list_insert_sub_~sub~0#1.base| v_ArrVal_2748))) (= (_ bv0 1) (select |c_old(#valid)| |create_sub_list_insert_sub_~sub~0#1.base|)))) is different from true [2022-12-14 10:52:26,880 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 [2022-12-14 10:52:26,942 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 10:52:26,943 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2022-12-14 10:52:26,969 WARN L859 $PredicateComparison]: unable to prove that (exists ((|create_sub_list_insert_sub_~sub~0#1.base| (_ BitVec 32))) (and (exists ((v_ArrVal_2749 (_ BitVec 1))) (= |c_#valid| (store |c_old(#valid)| |create_sub_list_insert_sub_~sub~0#1.base| v_ArrVal_2749))) (= (_ bv0 1) (select |c_old(#valid)| |create_sub_list_insert_sub_~sub~0#1.base|)))) is different from true [2022-12-14 10:52:26,987 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 [2022-12-14 10:52:27,048 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 10:52:27,049 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2022-12-14 10:52:27,060 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 7 not checked. [2022-12-14 10:52:27,060 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 10:52:27,287 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [186120291] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 10:52:27,287 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 10:52:27,287 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 10, 8] total 27 [2022-12-14 10:52:27,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225006694] [2022-12-14 10:52:27,287 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 10:52:27,288 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-12-14 10:52:27,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 10:52:27,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-12-14 10:52:27,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=547, Unknown=15, NotChecked=204, Total=870 [2022-12-14 10:52:27,289 INFO L87 Difference]: Start difference. First operand 194 states and 208 transitions. Second operand has 28 states, 25 states have (on average 3.36) internal successors, (84), 23 states have internal predecessors, (84), 10 states have call successors, (14), 9 states have call predecessors, (14), 8 states have return successors, (11), 9 states have call predecessors, (11), 9 states have call successors, (11) [2022-12-14 10:52:48,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:52:48,806 INFO L93 Difference]: Finished difference Result 400 states and 430 transitions. [2022-12-14 10:52:48,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-12-14 10:52:48,807 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 25 states have (on average 3.36) internal successors, (84), 23 states have internal predecessors, (84), 10 states have call successors, (14), 9 states have call predecessors, (14), 8 states have return successors, (11), 9 states have call predecessors, (11), 9 states have call successors, (11) Word has length 51 [2022-12-14 10:52:48,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:52:48,808 INFO L225 Difference]: With dead ends: 400 [2022-12-14 10:52:48,808 INFO L226 Difference]: Without dead ends: 400 [2022-12-14 10:52:48,809 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 144 SyntacticMatches, 8 SemanticMatches, 40 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 367 ImplicationChecksByTransitivity, 20.8s TimeCoverageRelationStatistics Valid=254, Invalid=1143, Unknown=25, NotChecked=300, Total=1722 [2022-12-14 10:52:48,809 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 562 mSDsluCounter, 458 mSDsCounter, 0 mSdLazyCounter, 691 mSolverCounterSat, 76 mSolverCounterUnsat, 81 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 564 SdHoareTripleChecker+Valid, 493 SdHoareTripleChecker+Invalid, 1336 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 691 IncrementalHoareTripleChecker+Invalid, 81 IncrementalHoareTripleChecker+Unknown, 488 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-12-14 10:52:48,809 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [564 Valid, 493 Invalid, 1336 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 691 Invalid, 81 Unknown, 488 Unchecked, 2.3s Time] [2022-12-14 10:52:48,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 400 states. [2022-12-14 10:52:48,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 400 to 307. [2022-12-14 10:52:48,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 307 states, 239 states have (on average 1.2259414225941423) internal successors, (293), 268 states have internal predecessors, (293), 20 states have call successors, (20), 20 states have call predecessors, (20), 24 states have return successors, (25), 18 states have call predecessors, (25), 20 states have call successors, (25) [2022-12-14 10:52:48,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307 states to 307 states and 338 transitions. [2022-12-14 10:52:48,816 INFO L78 Accepts]: Start accepts. Automaton has 307 states and 338 transitions. Word has length 51 [2022-12-14 10:52:48,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:52:48,816 INFO L495 AbstractCegarLoop]: Abstraction has 307 states and 338 transitions. [2022-12-14 10:52:48,816 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 25 states have (on average 3.36) internal successors, (84), 23 states have internal predecessors, (84), 10 states have call successors, (14), 9 states have call predecessors, (14), 8 states have return successors, (11), 9 states have call predecessors, (11), 9 states have call successors, (11) [2022-12-14 10:52:48,816 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states and 338 transitions. [2022-12-14 10:52:48,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-12-14 10:52:48,817 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:52:48,817 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] [2022-12-14 10:52:48,824 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30fedb40-a0b9-4db9-90fc-082cefc5fb5f/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (35)] Ended with exit code 0 [2022-12-14 10:52:49,054 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30fedb40-a0b9-4db9-90fc-082cefc5fb5f/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (34)] Forceful destruction successful, exit code 0 [2022-12-14 10:52:49,227 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30fedb40-a0b9-4db9-90fc-082cefc5fb5f/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0 [2022-12-14 10:52:49,419 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30fedb40-a0b9-4db9-90fc-082cefc5fb5f/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt,34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30fedb40-a0b9-4db9-90fc-082cefc5fb5f/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30fedb40-a0b9-4db9-90fc-082cefc5fb5f/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 10:52:49,420 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting list_add_tailErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_sub_listErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_sub_listErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_sub_listErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-12-14 10:52:49,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:52:49,421 INFO L85 PathProgramCache]: Analyzing trace with hash 1768276040, now seen corresponding path program 1 times [2022-12-14 10:52:49,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 10:52:49,422 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2063260703] [2022-12-14 10:52:49,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:52:49,422 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 10:52:49,423 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30fedb40-a0b9-4db9-90fc-082cefc5fb5f/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 10:52:49,425 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30fedb40-a0b9-4db9-90fc-082cefc5fb5f/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 10:52:49,428 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30fedb40-a0b9-4db9-90fc-082cefc5fb5f/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (37)] Waiting until timeout for monitored process [2022-12-14 10:52:49,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:52:49,834 INFO L263 TraceCheckSpWp]: Trace formula consists of 390 conjuncts, 29 conjunts are in the unsatisfiable core [2022-12-14 10:52:49,836 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:52:49,849 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-14 10:52:49,857 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-12-14 10:52:49,897 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:52:49,898 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-12-14 10:52:49,913 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-12-14 10:52:49,914 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-12-14 10:52:49,959 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 [2022-12-14 10:52:50,077 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-14 10:52:50,249 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:52:50,249 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-12-14 10:52:50,352 WARN L859 $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 [2022-12-14 10:52:50,363 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 [2022-12-14 10:52:50,523 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-12-14 10:52:50,523 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 [2022-12-14 10:52:50,843 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 2 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 3 not checked. [2022-12-14 10:52:50,843 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 10:52:51,444 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 10:52:51,444 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2063260703] [2022-12-14 10:52:51,444 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2063260703] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 10:52:51,444 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [862322540] [2022-12-14 10:52:51,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:52:51,444 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-12-14 10:52:51,444 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30fedb40-a0b9-4db9-90fc-082cefc5fb5f/bin/utaipan-gh47qXpMRh/cvc4 [2022-12-14 10:52:51,445 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30fedb40-a0b9-4db9-90fc-082cefc5fb5f/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-12-14 10:52:51,446 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30fedb40-a0b9-4db9-90fc-082cefc5fb5f/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (38)] Waiting until timeout for monitored process [2022-12-14 10:52:52,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:52:52,877 INFO L263 TraceCheckSpWp]: Trace formula consists of 390 conjuncts, 28 conjunts are in the unsatisfiable core [2022-12-14 10:52:52,879 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:52:52,893 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 [2022-12-14 10:52:52,898 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-14 10:52:52,999 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:52:52,999 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-12-14 10:52:53,104 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 [2022-12-14 10:52:53,287 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-14 10:52:53,464 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:52:53,465 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-12-14 10:52:53,479 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 [2022-12-14 10:52:53,543 WARN L859 $PredicateComparison]: unable to prove that (and (not (= |c_#StackHeapBarrier| (_ bv0 32))) (exists ((|create_sub_list_insert_sub_~sub~0#1.base| (_ BitVec 32)) (v_ArrVal_2982 (_ BitVec 32))) (and (= (store |c_old(#length)| |create_sub_list_insert_sub_~sub~0#1.base| v_ArrVal_2982) |c_#length|) (bvult |create_sub_list_insert_sub_~sub~0#1.base| |c_#StackHeapBarrier|))) (not (= (bvadd |c_#StackHeapBarrier| (_ bv1 32)) (_ bv0 32)))) is different from true [2022-12-14 10:52:53,590 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-14 10:52:53,745 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:52:53,746 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-12-14 10:52:53,978 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 14 trivial. 7 not checked. [2022-12-14 10:52:53,978 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 10:52:54,318 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [862322540] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 10:52:54,318 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1260767966] [2022-12-14 10:52:54,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:52:54,318 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 10:52:54,318 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30fedb40-a0b9-4db9-90fc-082cefc5fb5f/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 10:52:54,319 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30fedb40-a0b9-4db9-90fc-082cefc5fb5f/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 10:52:54,320 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30fedb40-a0b9-4db9-90fc-082cefc5fb5f/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2022-12-14 10:52:54,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:52:54,522 INFO L263 TraceCheckSpWp]: Trace formula consists of 390 conjuncts, 38 conjunts are in the unsatisfiable core [2022-12-14 10:52:54,524 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:52:54,530 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-14 10:52:54,539 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-12-14 10:52:54,658 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-12-14 10:52:54,658 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 [2022-12-14 10:52:54,705 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 10:52:54,705 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2022-12-14 10:52:55,177 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-14 10:52:55,197 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_3100 (_ 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_3100) |c_#length|) (= (_ bv0 1) (select |c_old(#valid)| |create_sub_list_insert_sub_~sub~0#1.base|)))) is different from true [2022-12-14 10:52:55,237 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:52:55,238 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 [2022-12-14 10:52:55,272 INFO L321 Elim1Store]: treesize reduction 12, result has 42.9 percent of original size [2022-12-14 10:52:55,272 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 [2022-12-14 10:52:55,401 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-14 10:52:55,489 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-12-14 10:52:55,489 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 [2022-12-14 10:52:55,933 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 14 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 4 not checked. [2022-12-14 10:52:55,934 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 10:52:56,242 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1260767966] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 10:52:56,242 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 10:52:56,242 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 10, 14] total 30 [2022-12-14 10:52:56,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19622322] [2022-12-14 10:52:56,243 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 10:52:56,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-12-14 10:52:56,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 10:52:56,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-12-14 10:52:56,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=936, Unknown=12, NotChecked=192, Total=1260 [2022-12-14 10:52:56,244 INFO L87 Difference]: Start difference. First operand 307 states and 338 transitions. Second operand has 31 states, 26 states have (on average 3.1923076923076925) internal successors, (83), 23 states have internal predecessors, (83), 12 states have call successors, (14), 10 states have call predecessors, (14), 7 states have return successors, (11), 9 states have call predecessors, (11), 10 states have call successors, (11) [2022-12-14 10:52:58,537 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.52s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-14 10:53:02,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:53:02,680 INFO L93 Difference]: Finished difference Result 362 states and 393 transitions. [2022-12-14 10:53:02,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-12-14 10:53:02,681 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 26 states have (on average 3.1923076923076925) internal successors, (83), 23 states have internal predecessors, (83), 12 states have call successors, (14), 10 states have call predecessors, (14), 7 states have return successors, (11), 9 states have call predecessors, (11), 10 states have call successors, (11) Word has length 51 [2022-12-14 10:53:02,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:53:02,682 INFO L225 Difference]: With dead ends: 362 [2022-12-14 10:53:02,682 INFO L226 Difference]: Without dead ends: 362 [2022-12-14 10:53:02,682 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 130 SyntacticMatches, 5 SemanticMatches, 45 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 502 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=258, Invalid=1628, Unknown=18, NotChecked=258, Total=2162 [2022-12-14 10:53:02,682 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 585 mSDsluCounter, 538 mSDsCounter, 0 mSdLazyCounter, 945 mSolverCounterSat, 61 mSolverCounterUnsat, 169 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 589 SdHoareTripleChecker+Valid, 580 SdHoareTripleChecker+Invalid, 1633 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 945 IncrementalHoareTripleChecker+Invalid, 169 IncrementalHoareTripleChecker+Unknown, 458 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2022-12-14 10:53:02,683 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [589 Valid, 580 Invalid, 1633 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 945 Invalid, 169 Unknown, 458 Unchecked, 5.2s Time] [2022-12-14 10:53:02,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 362 states. [2022-12-14 10:53:02,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 362 to 307. [2022-12-14 10:53:02,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 307 states, 239 states have (on average 1.2217573221757323) internal successors, (292), 268 states have internal predecessors, (292), 20 states have call successors, (20), 20 states have call predecessors, (20), 24 states have return successors, (25), 18 states have call predecessors, (25), 20 states have call successors, (25) [2022-12-14 10:53:02,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307 states to 307 states and 337 transitions. [2022-12-14 10:53:02,689 INFO L78 Accepts]: Start accepts. Automaton has 307 states and 337 transitions. Word has length 51 [2022-12-14 10:53:02,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:53:02,689 INFO L495 AbstractCegarLoop]: Abstraction has 307 states and 337 transitions. [2022-12-14 10:53:02,689 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 26 states have (on average 3.1923076923076925) internal successors, (83), 23 states have internal predecessors, (83), 12 states have call successors, (14), 10 states have call predecessors, (14), 7 states have return successors, (11), 9 states have call predecessors, (11), 10 states have call successors, (11) [2022-12-14 10:53:02,689 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states and 337 transitions. [2022-12-14 10:53:02,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-12-14 10:53:02,689 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:53:02,689 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] [2022-12-14 10:53:02,698 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30fedb40-a0b9-4db9-90fc-082cefc5fb5f/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Ended with exit code 0 [2022-12-14 10:53:02,901 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30fedb40-a0b9-4db9-90fc-082cefc5fb5f/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (37)] Ended with exit code 0 [2022-12-14 10:53:03,099 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30fedb40-a0b9-4db9-90fc-082cefc5fb5f/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (38)] Ended with exit code 0 [2022-12-14 10:53:03,291 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30fedb40-a0b9-4db9-90fc-082cefc5fb5f/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30fedb40-a0b9-4db9-90fc-082cefc5fb5f/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30fedb40-a0b9-4db9-90fc-082cefc5fb5f/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt [2022-12-14 10:53:03,292 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting list_add_tailErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_sub_listErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_sub_listErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_sub_listErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-12-14 10:53:03,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:53:03,293 INFO L85 PathProgramCache]: Analyzing trace with hash 636971300, now seen corresponding path program 2 times [2022-12-14 10:53:03,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 10:53:03,294 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1745928595] [2022-12-14 10:53:03,295 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-14 10:53:03,295 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 10:53:03,295 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30fedb40-a0b9-4db9-90fc-082cefc5fb5f/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 10:53:03,297 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30fedb40-a0b9-4db9-90fc-082cefc5fb5f/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 10:53:03,301 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30fedb40-a0b9-4db9-90fc-082cefc5fb5f/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (40)] Waiting until timeout for monitored process [2022-12-14 10:53:03,976 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-14 10:53:03,976 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 10:53:03,997 INFO L263 TraceCheckSpWp]: Trace formula consists of 438 conjuncts, 98 conjunts are in the unsatisfiable core [2022-12-14 10:53:04,002 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:53:04,006 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-12-14 10:53:04,083 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 [2022-12-14 10:53:04,134 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:53:04,134 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 [2022-12-14 10:53:04,171 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-12-14 10:53:04,171 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-12-14 10:53:04,247 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-12-14 10:53:04,537 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 [2022-12-14 10:53:04,658 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-12-14 10:53:04,659 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 [2022-12-14 10:53:04,666 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 [2022-12-14 10:53:04,804 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-12-14 10:53:04,804 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 26 [2022-12-14 10:53:06,232 INFO L321 Elim1Store]: treesize reduction 27, result has 48.1 percent of original size [2022-12-14 10:53:06,232 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 [2022-12-14 10:53:06,416 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 [2022-12-14 10:53:06,545 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 10:53:06,545 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2022-12-14 10:53:06,708 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 [2022-12-14 10:53:06,739 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 [2022-12-14 10:53:08,130 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 [2022-12-14 10:53:08,188 INFO L321 Elim1Store]: treesize reduction 24, result has 38.5 percent of original size [2022-12-14 10:53:08,189 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 [2022-12-14 10:53:08,420 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-14 10:53:08,513 INFO L321 Elim1Store]: treesize reduction 56, result has 35.6 percent of original size [2022-12-14 10:53:08,513 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 [2022-12-14 10:53:08,734 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 [2022-12-14 10:53:09,301 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 [2022-12-14 10:53:09,317 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 [2022-12-14 10:53:09,651 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 3 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:53:09,652 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 10:53:12,773 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 [2022-12-14 10:53:16,806 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 10:53:16,806 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1745928595] [2022-12-14 10:53:16,807 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1745928595] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 10:53:16,807 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1744679244] [2022-12-14 10:53:16,807 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-14 10:53:16,807 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-12-14 10:53:16,807 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30fedb40-a0b9-4db9-90fc-082cefc5fb5f/bin/utaipan-gh47qXpMRh/cvc4 [2022-12-14 10:53:16,808 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30fedb40-a0b9-4db9-90fc-082cefc5fb5f/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-12-14 10:53:16,809 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30fedb40-a0b9-4db9-90fc-082cefc5fb5f/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (41)] Waiting until timeout for monitored process [2022-12-14 10:53:17,435 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-14 10:53:17,435 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1449925627] [2022-12-14 10:53:17,436 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-14 10:53:17,436 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 10:53:17,436 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30fedb40-a0b9-4db9-90fc-082cefc5fb5f/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 10:53:17,437 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30fedb40-a0b9-4db9-90fc-082cefc5fb5f/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 10:53:17,441 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30fedb40-a0b9-4db9-90fc-082cefc5fb5f/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (41)] Ended with exit code 1 [2022-12-14 10:53:17,442 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30fedb40-a0b9-4db9-90fc-082cefc5fb5f/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2022-12-14 10:53:19,737 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-14 10:53:19,737 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 10:53:19,747 INFO L263 TraceCheckSpWp]: Trace formula consists of 438 conjuncts, 118 conjunts are in the unsatisfiable core [2022-12-14 10:53:19,752 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:53:19,757 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-12-14 10:53:19,765 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 5 [2022-12-14 10:53:20,293 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 [2022-12-14 10:53:20,311 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-14 10:53:20,537 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-14 10:53:20,547 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:53:20,548 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 [2022-12-14 10:53:20,558 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:53:20,558 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 [2022-12-14 10:53:20,798 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-12-14 10:53:20,799 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-12-14 10:53:21,052 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 [2022-12-14 10:53:21,076 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 [2022-12-14 10:53:23,505 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 [2022-12-14 10:53:23,565 INFO L321 Elim1Store]: treesize reduction 46, result has 19.3 percent of original size [2022-12-14 10:53:23,565 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 [2022-12-14 10:53:23,572 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 [2022-12-14 10:53:23,579 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 [2022-12-14 10:53:23,997 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 10:53:23,997 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2022-12-14 10:53:24,472 INFO L321 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2022-12-14 10:53:24,473 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 67 treesize of output 63 [2022-12-14 10:53:24,519 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 [2022-12-14 10:53:25,395 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 [2022-12-14 10:53:25,460 INFO L321 Elim1Store]: treesize reduction 24, result has 38.5 percent of original size [2022-12-14 10:53:25,461 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 [2022-12-14 10:53:25,591 INFO L321 Elim1Store]: treesize reduction 56, result has 35.6 percent of original size [2022-12-14 10:53:25,591 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 [2022-12-14 10:53:25,631 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 [2022-12-14 10:53:25,700 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 [2022-12-14 10:53:26,241 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 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-14 10:53:26,249 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 [2022-12-14 10:53:26,533 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 35 refuted. 3 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:53:26,533 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 10:53:26,825 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 [2022-12-14 10:53:30,054 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1449925627] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 10:53:30,054 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-14 10:53:30,054 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 32] total 50 [2022-12-14 10:53:30,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76241907] [2022-12-14 10:53:30,054 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-14 10:53:30,055 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2022-12-14 10:53:30,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 10:53:30,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2022-12-14 10:53:30,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=189, Invalid=3267, Unknown=84, NotChecked=0, Total=3540 [2022-12-14 10:53:30,056 INFO L87 Difference]: Start difference. First operand 307 states and 337 transitions. Second operand has 51 states, 49 states have (on average 1.4489795918367347) internal successors, (71), 44 states have internal predecessors, (71), 7 states have call successors, (7), 7 states have call predecessors, (7), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-14 10:53:56,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:53:56,278 INFO L93 Difference]: Finished difference Result 308 states and 335 transitions. [2022-12-14 10:53:56,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-12-14 10:53:56,279 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 49 states have (on average 1.4489795918367347) internal successors, (71), 44 states have internal predecessors, (71), 7 states have call successors, (7), 7 states have call predecessors, (7), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 51 [2022-12-14 10:53:56,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:53:56,280 INFO L225 Difference]: With dead ends: 308 [2022-12-14 10:53:56,280 INFO L226 Difference]: Without dead ends: 308 [2022-12-14 10:53:56,281 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 65 SyntacticMatches, 8 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2414 ImplicationChecksByTransitivity, 33.7s TimeCoverageRelationStatistics Valid=637, Invalid=7944, Unknown=161, NotChecked=0, Total=8742 [2022-12-14 10:53:56,281 INFO L413 NwaCegarLoop]: 66 mSDtfsCounter, 131 mSDsluCounter, 1286 mSDsCounter, 0 mSdLazyCounter, 2039 mSolverCounterSat, 46 mSolverCounterUnsat, 71 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 1352 SdHoareTripleChecker+Invalid, 2156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 2039 IncrementalHoareTripleChecker+Invalid, 71 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.7s IncrementalHoareTripleChecker+Time [2022-12-14 10:53:56,282 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [131 Valid, 1352 Invalid, 2156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 2039 Invalid, 71 Unknown, 0 Unchecked, 9.7s Time] [2022-12-14 10:53:56,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2022-12-14 10:53:56,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 307. [2022-12-14 10:53:56,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 307 states, 239 states have (on average 1.213389121338912) internal successors, (290), 268 states have internal predecessors, (290), 20 states have call successors, (20), 20 states have call predecessors, (20), 24 states have return successors, (25), 18 states have call predecessors, (25), 20 states have call successors, (25) [2022-12-14 10:53:56,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307 states to 307 states and 335 transitions. [2022-12-14 10:53:56,287 INFO L78 Accepts]: Start accepts. Automaton has 307 states and 335 transitions. Word has length 51 [2022-12-14 10:53:56,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:53:56,287 INFO L495 AbstractCegarLoop]: Abstraction has 307 states and 335 transitions. [2022-12-14 10:53:56,287 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 49 states have (on average 1.4489795918367347) internal successors, (71), 44 states have internal predecessors, (71), 7 states have call successors, (7), 7 states have call predecessors, (7), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-14 10:53:56,287 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states and 335 transitions. [2022-12-14 10:53:56,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-12-14 10:53:56,288 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:53:56,288 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] [2022-12-14 10:53:56,302 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30fedb40-a0b9-4db9-90fc-082cefc5fb5f/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (40)] Ended with exit code 0 [2022-12-14 10:53:56,497 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30fedb40-a0b9-4db9-90fc-082cefc5fb5f/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Forceful destruction successful, exit code 0 [2022-12-14 10:53:56,689 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30fedb40-a0b9-4db9-90fc-082cefc5fb5f/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,42 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30fedb40-a0b9-4db9-90fc-082cefc5fb5f/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 10:53:56,689 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting list_add_tailErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_sub_listErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_sub_listErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_sub_listErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-12-14 10:53:56,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:53:56,690 INFO L85 PathProgramCache]: Analyzing trace with hash 636971301, now seen corresponding path program 2 times [2022-12-14 10:53:56,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 10:53:56,692 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [705734738] [2022-12-14 10:53:56,692 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-14 10:53:56,692 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 10:53:56,693 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30fedb40-a0b9-4db9-90fc-082cefc5fb5f/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 10:53:56,694 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30fedb40-a0b9-4db9-90fc-082cefc5fb5f/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 10:53:56,695 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30fedb40-a0b9-4db9-90fc-082cefc5fb5f/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (43)] Waiting until timeout for monitored process [2022-12-14 10:53:57,579 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-14 10:53:57,579 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 10:53:57,600 INFO L263 TraceCheckSpWp]: Trace formula consists of 438 conjuncts, 132 conjunts are in the unsatisfiable core [2022-12-14 10:53:57,606 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:53:57,611 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 7 [2022-12-14 10:53:57,714 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 [2022-12-14 10:53:57,722 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 [2022-12-14 10:53:57,772 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:53:57,773 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 [2022-12-14 10:53:57,786 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:53:57,787 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 [2022-12-14 10:53:57,860 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-12-14 10:53:57,860 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-12-14 10:53:57,978 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 23 [2022-12-14 10:53:58,009 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 [2022-12-14 10:53:58,947 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:53:58,948 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 72 treesize of output 46 [2022-12-14 10:53:58,998 INFO L321 Elim1Store]: treesize reduction 54, result has 16.9 percent of original size [2022-12-14 10:53:58,998 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 102 treesize of output 130 [2022-12-14 10:53:59,004 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:53:59,005 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 134 treesize of output 92 [2022-12-14 10:53:59,010 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 205 treesize of output 121 [2022-12-14 10:53:59,219 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-14 10:53:59,284 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-12-14 10:53:59,284 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-12-14 10:53:59,538 INFO L321 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2022-12-14 10:53:59,538 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 101 treesize of output 89 [2022-12-14 10:53:59,723 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 8 [2022-12-14 10:54:00,369 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 [2022-12-14 10:54:00,616 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-12-14 10:54:00,616 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 [2022-12-14 10:54:00,640 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 [2022-12-14 10:54:00,891 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-12-14 10:54:00,891 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 [2022-12-14 10:54:01,136 INFO L321 Elim1Store]: treesize reduction 17, result has 46.9 percent of original size [2022-12-14 10:54:01,136 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 [2022-12-14 10:54:01,155 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 [2022-12-14 10:54:01,451 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:54:01,452 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 66 treesize of output 46 [2022-12-14 10:54:01,527 INFO L321 Elim1Store]: treesize reduction 40, result has 27.3 percent of original size [2022-12-14 10:54:01,527 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 3 new quantified variables, introduced 2 case distinctions, treesize of input 49 treesize of output 55 [2022-12-14 10:54:01,842 INFO L321 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2022-12-14 10:54:01,842 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 18 [2022-12-14 10:54:02,098 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-12-14 10:54:02,098 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 32 treesize of output 34 [2022-12-14 10:54:02,134 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-12-14 10:54:02,135 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 1 case distinctions, treesize of input 14 treesize of output 20 [2022-12-14 10:54:02,143 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 0 case distinctions, treesize of input 20 treesize of output 14 [2022-12-14 10:54:03,144 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 41 [2022-12-14 10:54:03,150 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 37 [2022-12-14 10:54:03,556 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:54:03,556 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 10:54:07,285 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 10:54:07,286 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 [2022-12-14 10:54:07,330 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 10:54:07,330 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 [2022-12-14 10:54:07,355 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 963 treesize of output 931 [2022-12-14 10:54:07,369 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 [2022-12-14 10:54:07,383 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 [2022-12-14 10:54:13,717 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 14 treesize of output 10 [2022-12-14 10:54:14,232 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 [2022-12-14 10:54:14,375 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 [2022-12-14 10:54:15,094 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 10:54:15,094 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 [2022-12-14 10:54:15,136 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 10:54:15,137 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 214 treesize of output 207 [2022-12-14 10:54:15,150 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 190 treesize of output 158 [2022-12-14 10:54:15,161 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 158 treesize of output 142 [2022-12-14 10:54:15,178 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 74 treesize of output 66 [2022-12-14 10:55:05,570 WARN L233 SmtUtils]: Spent 29.92s on a formula simplification. DAG size of input: 147 DAG size of output: 59 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 10:55:05,572 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 10:55:05,572 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [705734738] [2022-12-14 10:55:05,572 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [705734738] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 10:55:05,572 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [525286486] [2022-12-14 10:55:05,572 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-14 10:55:05,572 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-12-14 10:55:05,572 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30fedb40-a0b9-4db9-90fc-082cefc5fb5f/bin/utaipan-gh47qXpMRh/cvc4 [2022-12-14 10:55:05,573 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30fedb40-a0b9-4db9-90fc-082cefc5fb5f/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-12-14 10:55:05,574 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30fedb40-a0b9-4db9-90fc-082cefc5fb5f/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (44)] Waiting until timeout for monitored process [2022-12-14 10:55:07,645 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-14 10:55:07,646 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 10:55:07,663 INFO L263 TraceCheckSpWp]: Trace formula consists of 438 conjuncts, 137 conjunts are in the unsatisfiable core [2022-12-14 10:55:07,671 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:55:07,677 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-12-14 10:55:07,749 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 [2022-12-14 10:55:07,764 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 [2022-12-14 10:55:07,785 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:55:07,786 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 [2022-12-14 10:55:07,816 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:55:07,817 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 [2022-12-14 10:55:07,894 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-12-14 10:55:07,894 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-12-14 10:55:08,287 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 [2022-12-14 10:55:08,323 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 [2022-12-14 10:55:09,774 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 [2022-12-14 10:55:09,858 INFO L321 Elim1Store]: treesize reduction 46, result has 19.3 percent of original size [2022-12-14 10:55:09,858 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 [2022-12-14 10:55:09,868 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 [2022-12-14 10:55:09,880 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 [2022-12-14 10:55:10,450 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 10:55:10,450 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2022-12-14 10:55:10,492 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 [2022-12-14 10:55:11,099 INFO L321 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2022-12-14 10:55:11,100 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 67 treesize of output 63 [2022-12-14 10:55:11,561 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 [2022-12-14 10:55:13,557 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 [2022-12-14 10:55:14,165 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-12-14 10:55:14,165 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 22 [2022-12-14 10:55:14,189 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 [2022-12-14 10:55:14,859 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-12-14 10:55:14,860 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 26 [2022-12-14 10:55:15,446 INFO L321 Elim1Store]: treesize reduction 17, result has 46.9 percent of original size [2022-12-14 10:55:15,446 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 [2022-12-14 10:55:15,478 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 [2022-12-14 10:55:16,191 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 [2022-12-14 10:55:16,270 INFO L321 Elim1Store]: treesize reduction 24, result has 38.5 percent of original size [2022-12-14 10:55:16,271 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 [2022-12-14 10:55:16,989 INFO L321 Elim1Store]: treesize reduction 12, result has 52.0 percent of original size [2022-12-14 10:55:16,989 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 [2022-12-14 10:55:17,014 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 [2022-12-14 10:55:17,512 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 [2022-12-14 10:55:17,541 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 [2022-12-14 10:55:18,547 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 10:55:18,548 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 [2022-12-14 10:55:18,564 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 10:55:18,565 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 [2022-12-14 10:55:20,808 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 35 refuted. 3 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:55:20,808 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 10:55:26,667 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 10:55:26,667 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 [2022-12-14 10:55:26,736 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 10:55:26,736 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 982 treesize of output 975 [2022-12-14 10:55:26,756 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 958 treesize of output 942 [2022-12-14 10:55:26,773 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 942 treesize of output 910 [2022-12-14 10:55:26,798 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 450 [2022-12-14 10:55:30,491 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 [2022-12-14 10:55:30,657 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 14 treesize of output 10 [2022-12-14 10:55:30,855 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 [2022-12-14 10:55:31,224 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 [2022-12-14 10:55:31,267 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 [2022-12-14 10:55:31,634 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 [2022-12-14 10:55:32,078 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 [2022-12-14 10:55:32,624 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 [2022-12-14 10:55:33,083 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 [2022-12-14 10:55:33,463 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 [2022-12-14 10:55:33,506 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 [2022-12-14 10:55:33,866 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 [2022-12-14 10:55:34,173 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 10:55:34,173 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 [2022-12-14 10:55:34,243 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 10:55:34,243 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 [2022-12-14 10:55:34,260 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 314 [2022-12-14 10:55:34,274 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 314 treesize of output 282 [2022-12-14 10:55:34,296 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 149 treesize of output 133 [2022-12-14 10:55:37,091 WARN L859 $PredicateComparison]: unable to prove that (let ((.cse71 (select |c_#memory_$Pointer$.base| |c_create_sub_list_insert_sub_~head#1.base|)) (.cse72 (bvadd (_ bv4 32) |c_create_sub_list_insert_sub_~head#1.offset|))) (let ((.cse15 (select .cse71 .cse72))) (let ((.cse19 (= .cse15 |c_create_sub_list_~sub#1.base|))) (let ((.cse20 (= |c_create_sub_list_insert_sub_~sub~0#1.base| |c_create_sub_list_~sub#1.base|)) (.cse40 (not .cse19)) (.cse14 (store |c_#memory_$Pointer$.base| |c_create_sub_list_insert_sub_~head#1.base| (store .cse71 .cse72 |c_create_sub_list_insert_sub_~sub~0#1.base|))) (.cse16 (bvadd (_ bv4 32) |c_create_sub_list_~sub#1.offset|)) (.cse10 (bvadd (_ bv8 32) |c_create_sub_list_~sub#1.offset|))) (let ((.cse30 (= |c_create_sub_list_insert_sub_~head#1.offset| |c_create_sub_list_~sub#1.offset|)) (.cse1 (forall ((|v_create_sub_list_insert_sub_~sub~0#1.base_112| (_ BitVec 32))) (or (not (= (_ bv0 1) (select |c_#valid| |v_create_sub_list_insert_sub_~sub~0#1.base_112|))) (not (bvule .cse10 (select (store |c_#length| |v_create_sub_list_insert_sub_~sub~0#1.base_112| (_ bv12 32)) |c_create_sub_list_~sub#1.base|)))))) (.cse13 (bvadd (_ bv8 32) |c_create_sub_list_insert_sub_~sub~0#1.offset|)) (.cse31 (or (forall ((|v_create_sub_list_insert_sub_~sub~0#1.base_112| (_ BitVec 32)) (v_ArrVal_3936 (Array (_ BitVec 32) (_ BitVec 32))) (v_arrayElimCell_438 (_ BitVec 32)) (v_ArrVal_3937 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3918 (Array (_ BitVec 32) (_ BitVec 32))) (v_arrayElimCell_441 (_ BitVec 32))) (let ((.cse70 (store |c_#length| |v_create_sub_list_insert_sub_~sub~0#1.base_112| (_ bv12 32)))) (let ((.cse69 (select .cse70 (select (select (store (store (store .cse14 |c_create_sub_list_insert_sub_~sub~0#1.base| v_ArrVal_3936) .cse15 v_ArrVal_3937) |v_create_sub_list_insert_sub_~sub~0#1.base_112| v_ArrVal_3918) |c_create_sub_list_~sub#1.base|) .cse16)))) (or (bvule (bvadd v_arrayElimCell_441 (_ bv4 32)) .cse69) (not (= (_ bv0 1) (select |c_#valid| |v_create_sub_list_insert_sub_~sub~0#1.base_112|))) (not (bvule .cse10 (select .cse70 |c_create_sub_list_~sub#1.base|))) (bvule (bvadd v_arrayElimCell_438 (_ bv4 32)) .cse69) (= |v_create_sub_list_insert_sub_~sub~0#1.base_112| |c_create_sub_list_~sub#1.base|))))) .cse19)) (.cse35 (forall ((|v_create_sub_list_insert_sub_~sub~0#1.base_112| (_ BitVec 32))) (let ((.cse67 (store |c_#length| |v_create_sub_list_insert_sub_~sub~0#1.base_112| (_ bv12 32)))) (or (not (= (_ bv0 1) (select |c_#valid| |v_create_sub_list_insert_sub_~sub~0#1.base_112|))) (not (bvule .cse10 (select .cse67 |c_create_sub_list_~sub#1.base|))) (forall ((v_ArrVal_3936 (Array (_ BitVec 32) (_ BitVec 32))) (v_arrayElimCell_438 (_ BitVec 32)) (v_ArrVal_3937 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3918 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse68 (select .cse67 (select (select (store (store (store .cse14 |c_create_sub_list_insert_sub_~sub~0#1.base| v_ArrVal_3936) .cse15 v_ArrVal_3937) |v_create_sub_list_insert_sub_~sub~0#1.base_112| v_ArrVal_3918) |c_create_sub_list_~sub#1.base|) .cse16)))) (or (forall ((v_arrayElimCell_439 (_ BitVec 32))) (bvule (bvadd v_arrayElimCell_439 (_ bv4 32)) .cse68)) (bvule (bvadd v_arrayElimCell_438 (_ bv4 32)) .cse68)))) (= |v_create_sub_list_insert_sub_~sub~0#1.base_112| |c_create_sub_list_~sub#1.base|))))) (.cse36 (or (forall ((|v_create_sub_list_insert_sub_~sub~0#1.base_112| (_ BitVec 32)) (v_ArrVal_3936 (Array (_ BitVec 32) (_ BitVec 32))) (v_arrayElimCell_438 (_ BitVec 32)) (v_ArrVal_3937 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3918 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse66 (store |c_#length| |v_create_sub_list_insert_sub_~sub~0#1.base_112| (_ bv12 32)))) (or (not (= (_ bv0 1) (select |c_#valid| |v_create_sub_list_insert_sub_~sub~0#1.base_112|))) (not (bvule .cse10 (select .cse66 |c_create_sub_list_~sub#1.base|))) (bvule (bvadd v_arrayElimCell_438 (_ bv4 32)) (select .cse66 (select (select (store (store (store .cse14 |c_create_sub_list_insert_sub_~sub~0#1.base| v_ArrVal_3936) .cse15 v_ArrVal_3937) |v_create_sub_list_insert_sub_~sub~0#1.base_112| v_ArrVal_3918) |c_create_sub_list_~sub#1.base|) .cse16))) (= |v_create_sub_list_insert_sub_~sub~0#1.base_112| |c_create_sub_list_~sub#1.base|)))) .cse19)) (.cse23 (or (forall ((|v_create_sub_list_insert_sub_~sub~0#1.base_112| (_ BitVec 32)) (v_ArrVal_3936 (Array (_ BitVec 32) (_ BitVec 32))) (v_arrayElimCell_439 (_ BitVec 32)) (v_ArrVal_3937 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3918 (Array (_ BitVec 32) (_ BitVec 32))) (v_arrayElimCell_440 (_ BitVec 32))) (let ((.cse64 (store |c_#length| |v_create_sub_list_insert_sub_~sub~0#1.base_112| (_ bv12 32)))) (let ((.cse65 (select .cse64 (select (select (store (store (store .cse14 |c_create_sub_list_insert_sub_~sub~0#1.base| v_ArrVal_3936) .cse15 v_ArrVal_3937) |v_create_sub_list_insert_sub_~sub~0#1.base_112| v_ArrVal_3918) |c_create_sub_list_~sub#1.base|) .cse16)))) (or (not (= (_ bv0 1) (select |c_#valid| |v_create_sub_list_insert_sub_~sub~0#1.base_112|))) (not (bvule .cse10 (select .cse64 |c_create_sub_list_~sub#1.base|))) (bvule (bvadd v_arrayElimCell_439 (_ bv4 32)) .cse65) (bvule (bvadd v_arrayElimCell_440 (_ bv4 32)) .cse65))))) .cse40)) (.cse37 (or .cse19 (forall ((|v_create_sub_list_insert_sub_~sub~0#1.base_112| (_ BitVec 32)) (v_ArrVal_3936 (Array (_ BitVec 32) (_ BitVec 32))) (v_arrayElimCell_438 (_ BitVec 32)) (v_ArrVal_3937 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3918 (Array (_ BitVec 32) (_ BitVec 32))) (v_arrayElimCell_440 (_ BitVec 32))) (let ((.cse62 (store |c_#length| |v_create_sub_list_insert_sub_~sub~0#1.base_112| (_ bv12 32)))) (let ((.cse63 (select .cse62 (select (select (store (store (store .cse14 |c_create_sub_list_insert_sub_~sub~0#1.base| v_ArrVal_3936) .cse15 v_ArrVal_3937) |v_create_sub_list_insert_sub_~sub~0#1.base_112| v_ArrVal_3918) |c_create_sub_list_~sub#1.base|) .cse16)))) (or (not (= (_ bv0 1) (select |c_#valid| |v_create_sub_list_insert_sub_~sub~0#1.base_112|))) (not (bvule .cse10 (select .cse62 |c_create_sub_list_~sub#1.base|))) (bvule (bvadd v_arrayElimCell_438 (_ bv4 32)) .cse63) (bvule (bvadd v_arrayElimCell_440 (_ bv4 32)) .cse63))))))) (.cse38 (forall ((|v_create_sub_list_insert_sub_~sub~0#1.base_112| (_ BitVec 32))) (let ((.cse60 (store |c_#length| |v_create_sub_list_insert_sub_~sub~0#1.base_112| (_ bv12 32)))) (or (not (= (_ bv0 1) (select |c_#valid| |v_create_sub_list_insert_sub_~sub~0#1.base_112|))) (not (bvule .cse10 (select .cse60 |c_create_sub_list_~sub#1.base|))) (forall ((v_ArrVal_3936 (Array (_ BitVec 32) (_ BitVec 32))) (v_arrayElimCell_438 (_ BitVec 32)) (v_ArrVal_3937 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3918 (Array (_ BitVec 32) (_ BitVec 32))) (v_arrayElimCell_440 (_ BitVec 32))) (let ((.cse61 (select .cse60 (select (select (store (store (store .cse14 |c_create_sub_list_insert_sub_~sub~0#1.base| v_ArrVal_3936) .cse15 v_ArrVal_3937) |v_create_sub_list_insert_sub_~sub~0#1.base_112| v_ArrVal_3918) |c_create_sub_list_~sub#1.base|) .cse16)))) (or (forall ((v_arrayElimCell_439 (_ BitVec 32))) (bvule (bvadd v_arrayElimCell_439 (_ bv4 32)) .cse61)) (bvule (bvadd v_arrayElimCell_438 (_ bv4 32)) .cse61) (bvule (bvadd v_arrayElimCell_440 (_ bv4 32)) .cse61)))))))) (.cse29 (or .cse40 (and (forall ((|v_create_sub_list_insert_sub_~sub~0#1.base_112| (_ BitVec 32))) (let ((.cse57 (store |c_#length| |v_create_sub_list_insert_sub_~sub~0#1.base_112| (_ bv12 32)))) (or (not (= (_ bv0 1) (select |c_#valid| |v_create_sub_list_insert_sub_~sub~0#1.base_112|))) (not (bvule .cse10 (select .cse57 |c_create_sub_list_~sub#1.base|))) (forall ((v_ArrVal_3936 (Array (_ BitVec 32) (_ BitVec 32))) (v_arrayElimCell_439 (_ BitVec 32)) (v_ArrVal_3937 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3918 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd v_arrayElimCell_439 (_ bv4 32)) (select .cse57 (select (select (store (store (store .cse14 |c_create_sub_list_insert_sub_~sub~0#1.base| v_ArrVal_3936) .cse15 v_ArrVal_3937) |v_create_sub_list_insert_sub_~sub~0#1.base_112| v_ArrVal_3918) |c_create_sub_list_~sub#1.base|) .cse16)))) (= |v_create_sub_list_insert_sub_~sub~0#1.base_112| |c_create_sub_list_~sub#1.base|)))) (forall ((|v_create_sub_list_insert_sub_~sub~0#1.base_112| (_ BitVec 32))) (let ((.cse58 (store |c_#length| |v_create_sub_list_insert_sub_~sub~0#1.base_112| (_ bv12 32)))) (or (not (= (_ bv0 1) (select |c_#valid| |v_create_sub_list_insert_sub_~sub~0#1.base_112|))) (not (bvule .cse10 (select .cse58 |c_create_sub_list_~sub#1.base|))) (forall ((v_ArrVal_3936 (Array (_ BitVec 32) (_ BitVec 32))) (v_arrayElimCell_439 (_ BitVec 32)) (v_ArrVal_3937 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3918 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse59 (select .cse58 (select (select (store (store (store .cse14 |c_create_sub_list_insert_sub_~sub~0#1.base| v_ArrVal_3936) .cse15 v_ArrVal_3937) |v_create_sub_list_insert_sub_~sub~0#1.base_112| v_ArrVal_3918) |c_create_sub_list_~sub#1.base|) .cse16)))) (or (bvule (bvadd v_arrayElimCell_439 (_ bv4 32)) .cse59) (forall ((v_arrayElimCell_440 (_ BitVec 32))) (bvule (bvadd v_arrayElimCell_440 (_ bv4 32)) .cse59))))))))))) (.cse32 (or (forall ((|v_create_sub_list_insert_sub_~sub~0#1.base_112| (_ BitVec 32)) (v_ArrVal_3936 (Array (_ BitVec 32) (_ BitVec 32))) (v_arrayElimCell_439 (_ BitVec 32)) (v_ArrVal_3937 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3918 (Array (_ BitVec 32) (_ BitVec 32))) (v_arrayElimCell_441 (_ BitVec 32))) (let ((.cse56 (store |c_#length| |v_create_sub_list_insert_sub_~sub~0#1.base_112| (_ bv12 32)))) (let ((.cse55 (select .cse56 (select (select (store (store (store .cse14 |c_create_sub_list_insert_sub_~sub~0#1.base| v_ArrVal_3936) .cse15 v_ArrVal_3937) |v_create_sub_list_insert_sub_~sub~0#1.base_112| v_ArrVal_3918) |c_create_sub_list_~sub#1.base|) .cse16)))) (or (bvule (bvadd v_arrayElimCell_441 (_ bv4 32)) .cse55) (not (= (_ bv0 1) (select |c_#valid| |v_create_sub_list_insert_sub_~sub~0#1.base_112|))) (not (bvule .cse10 (select .cse56 |c_create_sub_list_~sub#1.base|))) (bvule (bvadd v_arrayElimCell_439 (_ bv4 32)) .cse55) (= |v_create_sub_list_insert_sub_~sub~0#1.base_112| |c_create_sub_list_~sub#1.base|))))) .cse40)) (.cse2 (forall ((|v_create_sub_list_insert_sub_~sub~0#1.base_112| (_ BitVec 32))) (let ((.cse53 (store |c_#length| |v_create_sub_list_insert_sub_~sub~0#1.base_112| (_ bv12 32)))) (or (not (= (_ bv0 1) (select |c_#valid| |v_create_sub_list_insert_sub_~sub~0#1.base_112|))) (not (bvule .cse10 (select .cse53 |c_create_sub_list_~sub#1.base|))) (forall ((v_ArrVal_3936 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3937 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3918 (Array (_ BitVec 32) (_ BitVec 32))) (v_arrayElimCell_441 (_ BitVec 32))) (let ((.cse54 (select .cse53 (select (select (store (store (store .cse14 |c_create_sub_list_insert_sub_~sub~0#1.base| v_ArrVal_3936) .cse15 v_ArrVal_3937) |v_create_sub_list_insert_sub_~sub~0#1.base_112| v_ArrVal_3918) |c_create_sub_list_~sub#1.base|) .cse16)))) (or (bvule (bvadd v_arrayElimCell_441 (_ bv4 32)) .cse54) (forall ((v_arrayElimCell_439 (_ BitVec 32))) (bvule (bvadd v_arrayElimCell_439 (_ bv4 32)) .cse54))))) (= |v_create_sub_list_insert_sub_~sub~0#1.base_112| |c_create_sub_list_~sub#1.base|))))) (.cse6 (or (forall ((|v_create_sub_list_insert_sub_~sub~0#1.base_112| (_ BitVec 32)) (v_ArrVal_3936 (Array (_ BitVec 32) (_ BitVec 32))) (v_arrayElimCell_439 (_ BitVec 32)) (v_ArrVal_3937 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3918 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse52 (store |c_#length| |v_create_sub_list_insert_sub_~sub~0#1.base_112| (_ bv12 32)))) (or (not (= (_ bv0 1) (select |c_#valid| |v_create_sub_list_insert_sub_~sub~0#1.base_112|))) (not (bvule .cse10 (select .cse52 |c_create_sub_list_~sub#1.base|))) (bvule (bvadd v_arrayElimCell_439 (_ bv4 32)) (select .cse52 (select (select (store (store (store .cse14 |c_create_sub_list_insert_sub_~sub~0#1.base| v_ArrVal_3936) .cse15 v_ArrVal_3937) |v_create_sub_list_insert_sub_~sub~0#1.base_112| v_ArrVal_3918) |c_create_sub_list_~sub#1.base|) .cse16))) (= |v_create_sub_list_insert_sub_~sub~0#1.base_112| |c_create_sub_list_~sub#1.base|)))) .cse40)) (.cse7 (or (forall ((|v_create_sub_list_insert_sub_~sub~0#1.base_112| (_ BitVec 32)) (v_ArrVal_3936 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3937 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3918 (Array (_ BitVec 32) (_ BitVec 32))) (v_arrayElimCell_441 (_ BitVec 32))) (let ((.cse51 (store |c_#length| |v_create_sub_list_insert_sub_~sub~0#1.base_112| (_ bv12 32)))) (or (bvule (bvadd v_arrayElimCell_441 (_ bv4 32)) (select .cse51 (select (select (store (store (store .cse14 |c_create_sub_list_insert_sub_~sub~0#1.base| v_ArrVal_3936) .cse15 v_ArrVal_3937) |v_create_sub_list_insert_sub_~sub~0#1.base_112| v_ArrVal_3918) |c_create_sub_list_~sub#1.base|) .cse16))) (not (= (_ bv0 1) (select |c_#valid| |v_create_sub_list_insert_sub_~sub~0#1.base_112|))) (not (bvule .cse10 (select .cse51 |c_create_sub_list_~sub#1.base|))) (= |v_create_sub_list_insert_sub_~sub~0#1.base_112| |c_create_sub_list_~sub#1.base|)))) .cse19)) (.cse8 (or (forall ((|v_create_sub_list_insert_sub_~sub~0#1.base_112| (_ BitVec 32)) (v_ArrVal_3936 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3937 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3918 (Array (_ BitVec 32) (_ BitVec 32))) (v_arrayElimCell_441 (_ BitVec 32)) (v_arrayElimCell_440 (_ BitVec 32))) (let ((.cse50 (store |c_#length| |v_create_sub_list_insert_sub_~sub~0#1.base_112| (_ bv12 32)))) (let ((.cse49 (select .cse50 (select (select (store (store (store .cse14 |c_create_sub_list_insert_sub_~sub~0#1.base| v_ArrVal_3936) .cse15 v_ArrVal_3937) |v_create_sub_list_insert_sub_~sub~0#1.base_112| v_ArrVal_3918) |c_create_sub_list_~sub#1.base|) .cse16)))) (or (bvule (bvadd v_arrayElimCell_441 (_ bv4 32)) .cse49) (not (= (_ bv0 1) (select |c_#valid| |v_create_sub_list_insert_sub_~sub~0#1.base_112|))) (not (bvule .cse10 (select .cse50 |c_create_sub_list_~sub#1.base|))) (bvule (bvadd v_arrayElimCell_440 (_ bv4 32)) .cse49))))) .cse19)) (.cse0 (not .cse20)) (.cse33 (forall ((|v_create_sub_list_insert_sub_~sub~0#1.base_112| (_ BitVec 32))) (let ((.cse47 (store |c_#length| |v_create_sub_list_insert_sub_~sub~0#1.base_112| (_ bv12 32)))) (or (not (= (_ bv0 1) (select |c_#valid| |v_create_sub_list_insert_sub_~sub~0#1.base_112|))) (not (bvule .cse10 (select .cse47 |c_create_sub_list_~sub#1.base|))) (forall ((v_ArrVal_3936 (Array (_ BitVec 32) (_ BitVec 32))) (v_arrayElimCell_438 (_ BitVec 32)) (v_ArrVal_3937 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3918 (Array (_ BitVec 32) (_ BitVec 32))) (v_arrayElimCell_441 (_ BitVec 32)) (v_arrayElimCell_440 (_ BitVec 32))) (let ((.cse48 (select .cse47 (select (select (store (store (store .cse14 |c_create_sub_list_insert_sub_~sub~0#1.base| v_ArrVal_3936) .cse15 v_ArrVal_3937) |v_create_sub_list_insert_sub_~sub~0#1.base_112| v_ArrVal_3918) |c_create_sub_list_~sub#1.base|) .cse16)))) (or (bvule (bvadd v_arrayElimCell_441 (_ bv4 32)) .cse48) (bvule (bvadd v_arrayElimCell_438 (_ bv4 32)) .cse48) (bvule (bvadd v_arrayElimCell_440 (_ bv4 32)) .cse48)))))))) (.cse3 (not (bvule .cse10 (_ bv12 32)))) (.cse5 (store |c_#length| |c_create_sub_list_~sub#1.base| (_ bv12 32))) (.cse4 (not (= (select |c_#valid| |c_create_sub_list_~sub#1.base|) (_ bv0 1)))) (.cse39 (forall ((|v_create_sub_list_insert_sub_~sub~0#1.base_112| (_ BitVec 32))) (let ((.cse46 (store |c_#length| |v_create_sub_list_insert_sub_~sub~0#1.base_112| (_ bv12 32)))) (or (not (= (_ bv0 1) (select |c_#valid| |v_create_sub_list_insert_sub_~sub~0#1.base_112|))) (forall ((v_ArrVal_3936 (Array (_ BitVec 32) (_ BitVec 32))) (v_arrayElimCell_438 (_ BitVec 32)) (v_ArrVal_3937 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3918 (Array (_ BitVec 32) (_ BitVec 32))) (v_arrayElimCell_441 (_ BitVec 32))) (let ((.cse45 (select .cse46 (select (select (store (store (store .cse14 |c_create_sub_list_insert_sub_~sub~0#1.base| v_ArrVal_3936) .cse15 v_ArrVal_3937) |v_create_sub_list_insert_sub_~sub~0#1.base_112| v_ArrVal_3918) |c_create_sub_list_~sub#1.base|) .cse16)))) (or (bvule (bvadd v_arrayElimCell_441 (_ bv4 32)) .cse45) (forall ((v_arrayElimCell_439 (_ BitVec 32))) (bvule (bvadd v_arrayElimCell_439 (_ bv4 32)) .cse45)) (bvule (bvadd v_arrayElimCell_438 (_ bv4 32)) .cse45)))) (not (bvule .cse10 (select .cse46 |c_create_sub_list_~sub#1.base|))) (= |v_create_sub_list_insert_sub_~sub~0#1.base_112| |c_create_sub_list_~sub#1.base|))))) (.cse9 (= |c_create_sub_list_insert_sub_~head#1.base| |c_create_sub_list_~sub#1.base|))) (and (or .cse0 .cse1) (or (and .cse2 (or .cse3 .cse4 (forall ((v_arrayElimCell_449 (_ BitVec 32)) (v_arrayElimCell_440 (_ BitVec 32))) (bvule (bvadd v_arrayElimCell_440 (_ bv4 32)) (select .cse5 v_arrayElimCell_449)))) .cse6 .cse7 .cse8) .cse0) (or .cse9 .cse1) (forall ((|v_create_sub_list_insert_sub_~sub~0#1.base_112| (_ BitVec 32))) (let ((.cse11 (store |c_#length| |v_create_sub_list_insert_sub_~sub~0#1.base_112| (_ bv12 32)))) (or (not (= (_ bv0 1) (select |c_#valid| |v_create_sub_list_insert_sub_~sub~0#1.base_112|))) (not (bvule .cse10 (select .cse11 |c_create_sub_list_~sub#1.base|))) (forall ((v_ArrVal_3936 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3937 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3918 (Array (_ BitVec 32) (_ BitVec 32))) (v_arrayElimCell_441 (_ BitVec 32))) (let ((.cse12 (select .cse11 (select (select (store (store (store .cse14 |c_create_sub_list_insert_sub_~sub~0#1.base| v_ArrVal_3936) .cse15 v_ArrVal_3937) |v_create_sub_list_insert_sub_~sub~0#1.base_112| v_ArrVal_3918) |c_create_sub_list_~sub#1.base|) .cse16)))) (or (bvule (bvadd v_arrayElimCell_441 (_ bv4 32)) .cse12) (bvule .cse13 .cse12) (forall ((v_arrayElimCell_439 (_ BitVec 32))) (bvule (bvadd v_arrayElimCell_439 (_ bv4 32)) .cse12))))) (= |v_create_sub_list_insert_sub_~sub~0#1.base_112| |c_create_sub_list_~sub#1.base|)))) (or (forall ((|v_create_sub_list_insert_sub_~sub~0#1.base_112| (_ BitVec 32)) (v_ArrVal_3936 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3937 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3918 (Array (_ BitVec 32) (_ BitVec 32))) (v_arrayElimCell_441 (_ BitVec 32))) (let ((.cse18 (store |c_#length| |v_create_sub_list_insert_sub_~sub~0#1.base_112| (_ bv12 32)))) (let ((.cse17 (select .cse18 (select (select (store (store (store .cse14 |c_create_sub_list_insert_sub_~sub~0#1.base| v_ArrVal_3936) .cse15 v_ArrVal_3937) |v_create_sub_list_insert_sub_~sub~0#1.base_112| v_ArrVal_3918) |c_create_sub_list_~sub#1.base|) .cse16)))) (or (bvule (bvadd v_arrayElimCell_441 (_ bv4 32)) .cse17) (not (= (_ bv0 1) (select |c_#valid| |v_create_sub_list_insert_sub_~sub~0#1.base_112|))) (not (bvule .cse10 (select .cse18 |c_create_sub_list_~sub#1.base|))) (bvule .cse13 .cse17) (= |v_create_sub_list_insert_sub_~sub~0#1.base_112| |c_create_sub_list_~sub#1.base|))))) .cse19) .cse6 (or .cse20 (and (forall ((|v_create_sub_list_insert_sub_~sub~0#1.base_112| (_ BitVec 32))) (let ((.cse22 (store |c_#length| |v_create_sub_list_insert_sub_~sub~0#1.base_112| (_ bv12 32)))) (or (forall ((v_ArrVal_3936 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3937 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3918 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse21 (select .cse22 (select (select (store (store (store .cse14 |c_create_sub_list_insert_sub_~sub~0#1.base| v_ArrVal_3936) .cse15 v_ArrVal_3937) |v_create_sub_list_insert_sub_~sub~0#1.base_112| v_ArrVal_3918) |c_create_sub_list_~sub#1.base|) .cse16)))) (or (bvule .cse13 .cse21) (forall ((v_arrayElimCell_439 (_ BitVec 32))) (bvule (bvadd v_arrayElimCell_439 (_ bv4 32)) .cse21))))) (not (= (_ bv0 1) (select |c_#valid| |v_create_sub_list_insert_sub_~sub~0#1.base_112|))) (not (bvule .cse10 (select .cse22 |c_create_sub_list_~sub#1.base|))) (= |v_create_sub_list_insert_sub_~sub~0#1.base_112| |c_create_sub_list_~sub#1.base|)))) .cse23 (or (forall ((|v_create_sub_list_insert_sub_~sub~0#1.base_112| (_ BitVec 32)) (v_ArrVal_3936 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3937 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3918 (Array (_ BitVec 32) (_ BitVec 32))) (v_arrayElimCell_440 (_ BitVec 32))) (let ((.cse24 (store |c_#length| |v_create_sub_list_insert_sub_~sub~0#1.base_112| (_ bv12 32)))) (let ((.cse25 (select .cse24 (select (select (store (store (store .cse14 |c_create_sub_list_insert_sub_~sub~0#1.base| v_ArrVal_3936) .cse15 v_ArrVal_3937) |v_create_sub_list_insert_sub_~sub~0#1.base_112| v_ArrVal_3918) |c_create_sub_list_~sub#1.base|) .cse16)))) (or (not (= (_ bv0 1) (select |c_#valid| |v_create_sub_list_insert_sub_~sub~0#1.base_112|))) (not (bvule .cse10 (select .cse24 |c_create_sub_list_~sub#1.base|))) (bvule .cse13 .cse25) (bvule (bvadd v_arrayElimCell_440 (_ bv4 32)) .cse25))))) .cse19) .cse6 (or (forall ((|v_create_sub_list_insert_sub_~sub~0#1.base_112| (_ BitVec 32)) (v_ArrVal_3936 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3937 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3918 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse26 (store |c_#length| |v_create_sub_list_insert_sub_~sub~0#1.base_112| (_ bv12 32)))) (or (not (= (_ bv0 1) (select |c_#valid| |v_create_sub_list_insert_sub_~sub~0#1.base_112|))) (not (bvule .cse10 (select .cse26 |c_create_sub_list_~sub#1.base|))) (bvule .cse13 (select .cse26 (select (select (store (store (store .cse14 |c_create_sub_list_insert_sub_~sub~0#1.base| v_ArrVal_3936) .cse15 v_ArrVal_3937) |v_create_sub_list_insert_sub_~sub~0#1.base_112| v_ArrVal_3918) |c_create_sub_list_~sub#1.base|) .cse16))) (= |v_create_sub_list_insert_sub_~sub~0#1.base_112| |c_create_sub_list_~sub#1.base|)))) .cse19) (forall ((|v_create_sub_list_insert_sub_~sub~0#1.base_112| (_ BitVec 32))) (let ((.cse27 (store |c_#length| |v_create_sub_list_insert_sub_~sub~0#1.base_112| (_ bv12 32)))) (or (not (= (_ bv0 1) (select |c_#valid| |v_create_sub_list_insert_sub_~sub~0#1.base_112|))) (not (bvule .cse10 (select .cse27 |c_create_sub_list_~sub#1.base|))) (forall ((v_ArrVal_3936 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3937 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3918 (Array (_ BitVec 32) (_ BitVec 32))) (v_arrayElimCell_440 (_ BitVec 32))) (let ((.cse28 (select .cse27 (select (select (store (store (store .cse14 |c_create_sub_list_insert_sub_~sub~0#1.base| v_ArrVal_3936) .cse15 v_ArrVal_3937) |v_create_sub_list_insert_sub_~sub~0#1.base_112| v_ArrVal_3918) |c_create_sub_list_~sub#1.base|) .cse16)))) (or (bvule .cse13 .cse28) (forall ((v_arrayElimCell_439 (_ BitVec 32))) (bvule (bvadd v_arrayElimCell_439 (_ bv4 32)) .cse28)) (bvule (bvadd v_arrayElimCell_440 (_ bv4 32)) .cse28))))))) (or .cse3 .cse4 (forall ((v_arrayElimCell_448 (_ BitVec 32)) (v_arrayElimCell_440 (_ BitVec 32))) (bvule (bvadd v_arrayElimCell_440 (_ bv4 32)) (select .cse5 v_arrayElimCell_448)))) .cse29)) (or .cse30 (and .cse31 .cse6 .cse32 (or (and .cse2 .cse6 .cse7 .cse8 (or .cse3 .cse4 (forall ((v_arrayElimCell_453 (_ BitVec 32)) (v_arrayElimCell_440 (_ BitVec 32))) (bvule (bvadd v_arrayElimCell_440 (_ bv4 32)) (select .cse5 v_arrayElimCell_453))))) .cse0) (or (forall ((v_arrayElimCell_451 (_ BitVec 32)) (v_arrayElimCell_440 (_ BitVec 32))) (bvule (bvadd v_arrayElimCell_440 (_ bv4 32)) (select .cse5 v_arrayElimCell_451))) .cse3 .cse4) (or (and .cse33 (or .cse3 .cse4 (forall ((v_arrayElimCell_452 (_ BitVec 32)) (v_arrayElimCell_441 (_ BitVec 32)) (v_arrayElimCell_440 (_ BitVec 32))) (let ((.cse34 (select .cse5 v_arrayElimCell_452))) (or (bvule (bvadd v_arrayElimCell_441 (_ bv4 32)) .cse34) (bvule (bvadd v_arrayElimCell_440 (_ bv4 32)) .cse34)))))) .cse19) (or (and .cse35 .cse36 .cse23 .cse6 .cse37 (or .cse3 (forall ((v_arrayElimCell_450 (_ BitVec 32)) (v_arrayElimCell_440 (_ BitVec 32))) (bvule (bvadd v_arrayElimCell_440 (_ bv4 32)) (select .cse5 v_arrayElimCell_450))) .cse4) .cse38 .cse29) .cse20) .cse39)) (or .cse1 (bvule (bvadd (_ bv4 32) |c_create_sub_list_insert_sub_~sub~0#1.offset|) .cse13)) (or .cse3 .cse4) (or .cse40 .cse1) (or .cse3 (forall ((v_arrayElimCell_443 (_ BitVec 32)) (v_arrayElimCell_440 (_ BitVec 32))) (bvule (bvadd v_arrayElimCell_440 (_ bv4 32)) (select .cse5 v_arrayElimCell_443))) .cse4) .cse32 (or .cse30 .cse1) (or (and (forall ((|v_create_sub_list_insert_sub_~sub~0#1.base_112| (_ BitVec 32))) (let ((.cse41 (store |c_#length| |v_create_sub_list_insert_sub_~sub~0#1.base_112| (_ bv12 32)))) (or (not (= (_ bv0 1) (select |c_#valid| |v_create_sub_list_insert_sub_~sub~0#1.base_112|))) (not (bvule .cse10 (select .cse41 |c_create_sub_list_~sub#1.base|))) (forall ((v_ArrVal_3936 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3937 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3918 (Array (_ BitVec 32) (_ BitVec 32))) (v_arrayElimCell_441 (_ BitVec 32)) (v_arrayElimCell_440 (_ BitVec 32))) (let ((.cse42 (select .cse41 (select (select (store (store (store .cse14 |c_create_sub_list_insert_sub_~sub~0#1.base| v_ArrVal_3936) .cse15 v_ArrVal_3937) |v_create_sub_list_insert_sub_~sub~0#1.base_112| v_ArrVal_3918) |c_create_sub_list_~sub#1.base|) .cse16)))) (or (bvule (bvadd v_arrayElimCell_441 (_ bv4 32)) .cse42) (bvule .cse13 .cse42) (bvule (bvadd v_arrayElimCell_440 (_ bv4 32)) .cse42))))))) (or .cse3 .cse4 (forall ((v_arrayElimCell_442 (_ BitVec 32)) (v_arrayElimCell_441 (_ BitVec 32)) (v_arrayElimCell_440 (_ BitVec 32))) (let ((.cse43 (select .cse5 v_arrayElimCell_442))) (or (bvule (bvadd v_arrayElimCell_440 (_ bv4 32)) .cse43) (bvule (bvadd v_arrayElimCell_441 (_ bv4 32)) .cse43)))))) .cse19) (or (and .cse31 (or .cse20 (and .cse35 .cse36 (or .cse3 .cse4 (forall ((v_arrayElimCell_444 (_ BitVec 32)) (v_arrayElimCell_440 (_ BitVec 32))) (bvule (bvadd v_arrayElimCell_440 (_ bv4 32)) (select .cse5 v_arrayElimCell_444)))) .cse23 .cse6 .cse37 .cse38 .cse29)) .cse6 (or .cse3 .cse4 (forall ((v_arrayElimCell_445 (_ BitVec 32)) (v_arrayElimCell_440 (_ BitVec 32))) (bvule (bvadd v_arrayElimCell_440 (_ bv4 32)) (select .cse5 v_arrayElimCell_445)))) .cse32 (or (and (or .cse3 .cse4 (forall ((v_arrayElimCell_447 (_ BitVec 32)) (v_arrayElimCell_440 (_ BitVec 32))) (bvule (bvadd v_arrayElimCell_440 (_ bv4 32)) (select .cse5 v_arrayElimCell_447)))) .cse2 .cse6 .cse7 .cse8) .cse0) (or (and .cse33 (or .cse3 (forall ((v_arrayElimCell_446 (_ BitVec 32)) (v_arrayElimCell_441 (_ BitVec 32)) (v_arrayElimCell_440 (_ BitVec 32))) (let ((.cse44 (select .cse5 v_arrayElimCell_446))) (or (bvule (bvadd v_arrayElimCell_441 (_ bv4 32)) .cse44) (bvule (bvadd v_arrayElimCell_440 (_ bv4 32)) .cse44)))) .cse4)) .cse19) .cse39) .cse9))))))) is different from true [2022-12-14 10:55:37,099 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [525286486] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 10:55:37,100 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1735644067] [2022-12-14 10:55:37,100 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-14 10:55:37,100 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 10:55:37,100 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30fedb40-a0b9-4db9-90fc-082cefc5fb5f/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 10:55:37,101 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30fedb40-a0b9-4db9-90fc-082cefc5fb5f/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 10:55:37,102 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30fedb40-a0b9-4db9-90fc-082cefc5fb5f/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2022-12-14 10:55:38,302 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-14 10:55:38,302 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 10:55:38,311 INFO L263 TraceCheckSpWp]: Trace formula consists of 438 conjuncts, 131 conjunts are in the unsatisfiable core [2022-12-14 10:55:38,317 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:55:38,324 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-12-14 10:55:38,338 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-14 10:55:39,576 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 [2022-12-14 10:55:39,603 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 [2022-12-14 10:55:40,098 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 [2022-12-14 10:55:40,114 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:55:40,115 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 [2022-12-14 10:55:40,136 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:55:40,137 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 [2022-12-14 10:55:40,210 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-12-14 10:55:40,211 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-12-14 10:55:40,294 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 [2022-12-14 10:55:40,317 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 [2022-12-14 10:55:42,016 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 [2022-12-14 10:55:42,098 INFO L321 Elim1Store]: treesize reduction 46, result has 19.3 percent of original size [2022-12-14 10:55:42,098 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 [2022-12-14 10:55:42,109 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 [2022-12-14 10:55:42,120 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:55:42,121 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 [2022-12-14 10:55:42,142 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 22 [2022-12-14 10:55:42,688 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 10:55:42,688 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2022-12-14 10:55:42,733 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 [2022-12-14 10:55:42,847 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 17 treesize of output 19 [2022-12-14 10:55:42,882 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 [2022-12-14 10:55:44,823 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-14 10:55:45,656 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-12-14 10:55:45,657 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 [2022-12-14 10:55:45,683 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 [2022-12-14 10:55:46,518 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-12-14 10:55:46,518 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 [2022-12-14 10:55:47,295 INFO L321 Elim1Store]: treesize reduction 17, result has 46.9 percent of original size [2022-12-14 10:55:47,295 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 [2022-12-14 10:55:47,321 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-12-14 10:55:48,188 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 [2022-12-14 10:55:48,272 INFO L321 Elim1Store]: treesize reduction 24, result has 38.5 percent of original size [2022-12-14 10:55:48,272 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 [2022-12-14 10:55:48,446 INFO L321 Elim1Store]: treesize reduction 19, result has 47.2 percent of original size [2022-12-14 10:55:48,446 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 26 [2022-12-14 10:55:48,532 INFO L321 Elim1Store]: treesize reduction 12, result has 52.0 percent of original size [2022-12-14 10:55:48,532 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 24 treesize of output 26 [2022-12-14 10:55:49,076 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 [2022-12-14 10:55:49,098 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 [2022-12-14 10:55:50,498 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 [2022-12-14 10:55:50,515 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 [2022-12-14 10:55:51,372 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 3 proven. 32 refuted. 3 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:55:51,372 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 10:55:53,583 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse0 (bvadd (_ bv4 32) |c_create_sub_list_insert_sub_~head#1.offset|))) (and (forall ((v_ArrVal_4106 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4105 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv4 32) (select (select (store |c_#memory_$Pointer$.offset| |c_create_sub_list_insert_sub_~sub~0#1.base| v_ArrVal_4105) |c_create_sub_list_insert_sub_~head#1.base|) .cse0)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_create_sub_list_insert_sub_~sub~0#1.base| v_ArrVal_4106) |c_create_sub_list_insert_sub_~head#1.base|) .cse0)))) (forall ((v_ArrVal_4105 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (select (select (store |c_#memory_$Pointer$.offset| |c_create_sub_list_insert_sub_~sub~0#1.base| v_ArrVal_4105) |c_create_sub_list_insert_sub_~head#1.base|) .cse0))) (bvule .cse1 (bvadd (_ bv4 32) .cse1)))))) is different from false [2022-12-14 10:55:57,227 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 10:55:57,227 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 [2022-12-14 10:55:57,275 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 10:55:57,276 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 [2022-12-14 10:55:57,292 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 378 treesize of output 314 [2022-12-14 10:55:57,319 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 157 treesize of output 141 [2022-12-14 10:55:57,333 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 298 treesize of output 266 [2022-12-14 10:55:58,054 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 10:55:58,054 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 [2022-12-14 10:55:58,110 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 10:55:58,110 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 1830 treesize of output 1811 [2022-12-14 10:55:58,134 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 1794 treesize of output 1778 [2022-12-14 10:55:58,151 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 1778 treesize of output 1714 [2022-12-14 10:55:58,168 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 1714 treesize of output 1682 [2022-12-14 10:56:10,870 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 [2022-12-14 10:56:10,908 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2022-12-14 10:56:10,929 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 [2022-12-14 10:56:11,584 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 [2022-12-14 10:56:11,624 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 [2022-12-14 10:56:11,665 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 [2022-12-14 10:56:11,930 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 [2022-12-14 10:56:13,004 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 [2022-12-14 10:56:14,723 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 [2022-12-14 10:56:15,426 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 [2022-12-14 10:56:15,463 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 [2022-12-14 10:56:15,500 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 [2022-12-14 10:56:15,766 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 [2022-12-14 10:56:16,911 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 [2022-12-14 10:56:18,075 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 [2022-12-14 10:59:13,667 WARN L233 SmtUtils]: Spent 1.47m on a formula simplification. DAG size of input: 355 DAG size of output: 68 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 10:59:13,668 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1735644067] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 10:59:13,668 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 10:59:13,669 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32, 32] total 71 [2022-12-14 10:59:13,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628159308] [2022-12-14 10:59:13,669 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 10:59:13,669 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 72 states [2022-12-14 10:59:13,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 10:59:13,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2022-12-14 10:59:13,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=335, Invalid=7409, Unknown=96, NotChecked=350, Total=8190 [2022-12-14 10:59:13,671 INFO L87 Difference]: Start difference. First operand 307 states and 335 transitions. Second operand has 72 states, 68 states have (on average 1.6176470588235294) internal successors, (110), 64 states have internal predecessors, (110), 9 states have call successors, (9), 8 states have call predecessors, (9), 6 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) [2022-12-14 11:00:00,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:00:00,057 INFO L93 Difference]: Finished difference Result 307 states and 333 transitions. [2022-12-14 11:00:00,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-12-14 11:00:00,059 INFO L78 Accepts]: Start accepts. Automaton has has 72 states, 68 states have (on average 1.6176470588235294) internal successors, (110), 64 states have internal predecessors, (110), 9 states have call successors, (9), 8 states have call predecessors, (9), 6 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) Word has length 51 [2022-12-14 11:00:00,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:00:00,060 INFO L225 Difference]: With dead ends: 307 [2022-12-14 11:00:00,060 INFO L226 Difference]: Without dead ends: 307 [2022-12-14 11:00:00,061 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 97 SyntacticMatches, 9 SemanticMatches, 117 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 4006 ImplicationChecksByTransitivity, 287.8s TimeCoverageRelationStatistics Valid=787, Invalid=12632, Unknown=161, NotChecked=462, Total=14042 [2022-12-14 11:00:00,062 INFO L413 NwaCegarLoop]: 66 mSDtfsCounter, 153 mSDsluCounter, 1676 mSDsCounter, 0 mSdLazyCounter, 2482 mSolverCounterSat, 67 mSolverCounterUnsat, 90 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 1742 SdHoareTripleChecker+Invalid, 2639 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 2482 IncrementalHoareTripleChecker+Invalid, 90 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.8s IncrementalHoareTripleChecker+Time [2022-12-14 11:00:00,062 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [153 Valid, 1742 Invalid, 2639 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 2482 Invalid, 90 Unknown, 0 Unchecked, 21.8s Time] [2022-12-14 11:00:00,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states. [2022-12-14 11:00:00,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 307. [2022-12-14 11:00:00,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 307 states, 239 states have (on average 1.205020920502092) internal successors, (288), 268 states have internal predecessors, (288), 20 states have call successors, (20), 20 states have call predecessors, (20), 24 states have return successors, (25), 18 states have call predecessors, (25), 20 states have call successors, (25) [2022-12-14 11:00:00,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307 states to 307 states and 333 transitions. [2022-12-14 11:00:00,068 INFO L78 Accepts]: Start accepts. Automaton has 307 states and 333 transitions. Word has length 51 [2022-12-14 11:00:00,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:00:00,068 INFO L495 AbstractCegarLoop]: Abstraction has 307 states and 333 transitions. [2022-12-14 11:00:00,068 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 72 states, 68 states have (on average 1.6176470588235294) internal successors, (110), 64 states have internal predecessors, (110), 9 states have call successors, (9), 8 states have call predecessors, (9), 6 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) [2022-12-14 11:00:00,068 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states and 333 transitions. [2022-12-14 11:00:00,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-12-14 11:00:00,069 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:00:00,069 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 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] [2022-12-14 11:00:00,081 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30fedb40-a0b9-4db9-90fc-082cefc5fb5f/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Ended with exit code 0 [2022-12-14 11:00:00,308 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30fedb40-a0b9-4db9-90fc-082cefc5fb5f/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (43)] Ended with exit code 0 [2022-12-14 11:00:00,498 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30fedb40-a0b9-4db9-90fc-082cefc5fb5f/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (44)] Ended with exit code 0 [2022-12-14 11:00:00,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30fedb40-a0b9-4db9-90fc-082cefc5fb5f/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,43 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30fedb40-a0b9-4db9-90fc-082cefc5fb5f/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,44 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30fedb40-a0b9-4db9-90fc-082cefc5fb5f/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt [2022-12-14 11:00:00,671 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting list_add_tailErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_sub_listErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_sub_listErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_sub_listErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-12-14 11:00:00,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:00:00,672 INFO L85 PathProgramCache]: Analyzing trace with hash -1493772759, now seen corresponding path program 1 times [2022-12-14 11:00:00,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 11:00:00,673 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1236917913] [2022-12-14 11:00:00,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:00:00,674 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 11:00:00,674 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30fedb40-a0b9-4db9-90fc-082cefc5fb5f/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 11:00:00,675 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30fedb40-a0b9-4db9-90fc-082cefc5fb5f/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 11:00:00,678 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30fedb40-a0b9-4db9-90fc-082cefc5fb5f/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (46)] Waiting until timeout for monitored process [2022-12-14 11:00:00,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:00:00,974 INFO L263 TraceCheckSpWp]: Trace formula consists of 408 conjuncts, 13 conjunts are in the unsatisfiable core [2022-12-14 11:00:00,975 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 11:00:01,350 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-12-14 11:00:01,350 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 11:00:01,351 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 11:00:01,351 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1236917913] [2022-12-14 11:00:01,351 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1236917913] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 11:00:01,351 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 11:00:01,351 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-14 11:00:01,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182675035] [2022-12-14 11:00:01,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 11:00:01,352 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-14 11:00:01,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 11:00:01,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-14 11:00:01,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-12-14 11:00:01,353 INFO L87 Difference]: Start difference. First operand 307 states and 333 transitions. Second operand has 8 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-12-14 11:00:02,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:00:02,170 INFO L93 Difference]: Finished difference Result 309 states and 332 transitions. [2022-12-14 11:00:02,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-14 11:00:02,172 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 53 [2022-12-14 11:00:02,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:00:02,173 INFO L225 Difference]: With dead ends: 309 [2022-12-14 11:00:02,173 INFO L226 Difference]: Without dead ends: 309 [2022-12-14 11:00:02,173 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2022-12-14 11:00:02,173 INFO L413 NwaCegarLoop]: 74 mSDtfsCounter, 133 mSDsluCounter, 245 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 319 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-12-14 11:00:02,174 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [133 Valid, 319 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-12-14 11:00:02,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2022-12-14 11:00:02,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 306. [2022-12-14 11:00:02,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 306 states, 239 states have (on average 1.1966527196652719) internal successors, (286), 267 states have internal predecessors, (286), 20 states have call successors, (20), 20 states have call predecessors, (20), 24 states have return successors, (25), 18 states have call predecessors, (25), 20 states have call successors, (25) [2022-12-14 11:00:02,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 306 states to 306 states and 331 transitions. [2022-12-14 11:00:02,179 INFO L78 Accepts]: Start accepts. Automaton has 306 states and 331 transitions. Word has length 53 [2022-12-14 11:00:02,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:00:02,179 INFO L495 AbstractCegarLoop]: Abstraction has 306 states and 331 transitions. [2022-12-14 11:00:02,179 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-12-14 11:00:02,180 INFO L276 IsEmpty]: Start isEmpty. Operand 306 states and 331 transitions. [2022-12-14 11:00:02,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-12-14 11:00:02,180 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:00:02,180 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2022-12-14 11:00:02,198 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30fedb40-a0b9-4db9-90fc-082cefc5fb5f/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (46)] Ended with exit code 0 [2022-12-14 11:00:02,381 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30fedb40-a0b9-4db9-90fc-082cefc5fb5f/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 11:00:02,381 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting list_add_tailErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_sub_listErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_sub_listErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_sub_listErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-12-14 11:00:02,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:00:02,383 INFO L85 PathProgramCache]: Analyzing trace with hash 937684793, now seen corresponding path program 1 times [2022-12-14 11:00:02,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 11:00:02,384 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [519603606] [2022-12-14 11:00:02,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:00:02,385 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 11:00:02,385 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30fedb40-a0b9-4db9-90fc-082cefc5fb5f/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 11:00:02,388 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30fedb40-a0b9-4db9-90fc-082cefc5fb5f/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 11:00:02,390 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30fedb40-a0b9-4db9-90fc-082cefc5fb5f/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (47)] Waiting until timeout for monitored process [2022-12-14 11:00:02,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:00:02,722 INFO L263 TraceCheckSpWp]: Trace formula consists of 421 conjuncts, 12 conjunts are in the unsatisfiable core [2022-12-14 11:00:02,723 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 11:00:03,412 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 25 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-14 11:00:03,412 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 11:00:04,031 INFO L321 Elim1Store]: treesize reduction 7, result has 30.0 percent of original size [2022-12-14 11:00:04,032 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 [2022-12-14 11:00:04,148 INFO L321 Elim1Store]: treesize reduction 7, result has 30.0 percent of original size [2022-12-14 11:00:04,148 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 [2022-12-14 11:00:04,211 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 25 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-14 11:00:04,211 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 11:00:04,211 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [519603606] [2022-12-14 11:00:04,211 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [519603606] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 11:00:04,211 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1150118471] [2022-12-14 11:00:04,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:00:04,212 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-12-14 11:00:04,212 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30fedb40-a0b9-4db9-90fc-082cefc5fb5f/bin/utaipan-gh47qXpMRh/cvc4 [2022-12-14 11:00:04,213 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30fedb40-a0b9-4db9-90fc-082cefc5fb5f/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-12-14 11:00:04,213 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30fedb40-a0b9-4db9-90fc-082cefc5fb5f/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (48)] Waiting until timeout for monitored process [2022-12-14 11:00:04,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:00:04,837 INFO L263 TraceCheckSpWp]: Trace formula consists of 421 conjuncts, 13 conjunts are in the unsatisfiable core [2022-12-14 11:00:04,839 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 11:00:05,071 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 25 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-14 11:00:05,071 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 11:00:05,702 INFO L321 Elim1Store]: treesize reduction 7, result has 30.0 percent of original size [2022-12-14 11:00:05,703 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 [2022-12-14 11:00:05,835 INFO L321 Elim1Store]: treesize reduction 7, result has 30.0 percent of original size [2022-12-14 11:00:05,835 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 [2022-12-14 11:00:05,905 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 25 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-14 11:00:05,905 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1150118471] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 11:00:05,905 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1516066049] [2022-12-14 11:00:05,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:00:05,906 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 11:00:05,906 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30fedb40-a0b9-4db9-90fc-082cefc5fb5f/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 11:00:05,907 INFO L229 MonitoredProcess]: Starting monitored process 49 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30fedb40-a0b9-4db9-90fc-082cefc5fb5f/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 11:00:05,908 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30fedb40-a0b9-4db9-90fc-082cefc5fb5f/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process [2022-12-14 11:00:06,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:00:06,172 INFO L263 TraceCheckSpWp]: Trace formula consists of 421 conjuncts, 12 conjunts are in the unsatisfiable core [2022-12-14 11:00:06,173 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 11:00:06,390 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 25 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-14 11:00:06,390 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 11:00:06,974 INFO L321 Elim1Store]: treesize reduction 7, result has 30.0 percent of original size [2022-12-14 11:00:06,975 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 [2022-12-14 11:00:07,093 INFO L321 Elim1Store]: treesize reduction 7, result has 30.0 percent of original size [2022-12-14 11:00:07,093 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 16 treesize of output 15 [2022-12-14 11:00:07,156 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 25 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-14 11:00:07,156 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1516066049] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 11:00:07,156 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-12-14 11:00:07,156 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10, 10, 10, 10] total 10 [2022-12-14 11:00:07,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700699669] [2022-12-14 11:00:07,156 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-12-14 11:00:07,157 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-12-14 11:00:07,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 11:00:07,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-12-14 11:00:07,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2022-12-14 11:00:07,158 INFO L87 Difference]: Start difference. First operand 306 states and 331 transitions. Second operand has 11 states, 9 states have (on average 5.0) internal successors, (45), 9 states have internal predecessors, (45), 3 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2022-12-14 11:00:09,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:00:09,671 INFO L93 Difference]: Finished difference Result 336 states and 360 transitions. [2022-12-14 11:00:09,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-12-14 11:00:09,672 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 5.0) internal successors, (45), 9 states have internal predecessors, (45), 3 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 54 [2022-12-14 11:00:09,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:00:09,674 INFO L225 Difference]: With dead ends: 336 [2022-12-14 11:00:09,675 INFO L226 Difference]: Without dead ends: 336 [2022-12-14 11:00:09,675 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 330 GetRequests, 314 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2022-12-14 11:00:09,675 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 117 mSDsluCounter, 287 mSDsCounter, 0 mSdLazyCounter, 410 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 330 SdHoareTripleChecker+Invalid, 419 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 410 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-12-14 11:00:09,675 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [118 Valid, 330 Invalid, 419 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 410 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-12-14 11:00:09,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 336 states. [2022-12-14 11:00:09,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 336 to 305. [2022-12-14 11:00:09,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 305 states, 239 states have (on average 1.1882845188284519) internal successors, (284), 266 states have internal predecessors, (284), 20 states have call successors, (20), 20 states have call predecessors, (20), 24 states have return successors, (25), 18 states have call predecessors, (25), 20 states have call successors, (25) [2022-12-14 11:00:09,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305 states to 305 states and 329 transitions. [2022-12-14 11:00:09,681 INFO L78 Accepts]: Start accepts. Automaton has 305 states and 329 transitions. Word has length 54 [2022-12-14 11:00:09,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:00:09,681 INFO L495 AbstractCegarLoop]: Abstraction has 305 states and 329 transitions. [2022-12-14 11:00:09,681 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 5.0) internal successors, (45), 9 states have internal predecessors, (45), 3 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2022-12-14 11:00:09,681 INFO L276 IsEmpty]: Start isEmpty. Operand 305 states and 329 transitions. [2022-12-14 11:00:09,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-12-14 11:00:09,682 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:00:09,682 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2022-12-14 11:00:09,690 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30fedb40-a0b9-4db9-90fc-082cefc5fb5f/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (48)] Ended with exit code 0 [2022-12-14 11:00:09,895 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30fedb40-a0b9-4db9-90fc-082cefc5fb5f/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (47)] Ended with exit code 0 [2022-12-14 11:00:10,102 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30fedb40-a0b9-4db9-90fc-082cefc5fb5f/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Ended with exit code 0 [2022-12-14 11:00:10,283 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 48 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30fedb40-a0b9-4db9-90fc-082cefc5fb5f/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt,47 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30fedb40-a0b9-4db9-90fc-082cefc5fb5f/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,49 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30fedb40-a0b9-4db9-90fc-082cefc5fb5f/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 11:00:10,284 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting list_add_tailErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_sub_listErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_sub_listErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_sub_listErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-12-14 11:00:10,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:00:10,285 INFO L85 PathProgramCache]: Analyzing trace with hash 937684794, now seen corresponding path program 1 times [2022-12-14 11:00:10,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 11:00:10,287 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2002949671] [2022-12-14 11:00:10,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:00:10,287 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 11:00:10,288 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30fedb40-a0b9-4db9-90fc-082cefc5fb5f/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 11:00:10,289 INFO L229 MonitoredProcess]: Starting monitored process 50 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30fedb40-a0b9-4db9-90fc-082cefc5fb5f/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 11:00:10,290 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30fedb40-a0b9-4db9-90fc-082cefc5fb5f/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (50)] Waiting until timeout for monitored process [2022-12-14 11:00:10,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:00:10,735 INFO L263 TraceCheckSpWp]: Trace formula consists of 421 conjuncts, 23 conjunts are in the unsatisfiable core [2022-12-14 11:00:10,736 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 11:00:11,878 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 25 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-14 11:00:11,878 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 11:00:13,365 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 22 treesize of output 18 [2022-12-14 11:00:14,313 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 11:00:14,314 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 20 [2022-12-14 11:00:15,823 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 11:00:15,823 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 20 [2022-12-14 11:00:17,210 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 25 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-14 11:00:17,210 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 11:00:17,210 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2002949671] [2022-12-14 11:00:17,211 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2002949671] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 11:00:17,211 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [590386315] [2022-12-14 11:00:17,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:00:17,211 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-12-14 11:00:17,211 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30fedb40-a0b9-4db9-90fc-082cefc5fb5f/bin/utaipan-gh47qXpMRh/cvc4 [2022-12-14 11:00:17,212 INFO L229 MonitoredProcess]: Starting monitored process 51 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30fedb40-a0b9-4db9-90fc-082cefc5fb5f/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-12-14 11:00:17,213 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30fedb40-a0b9-4db9-90fc-082cefc5fb5f/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (51)] Waiting until timeout for monitored process [2022-12-14 11:00:17,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:00:17,719 INFO L263 TraceCheckSpWp]: Trace formula consists of 421 conjuncts, 27 conjunts are in the unsatisfiable core [2022-12-14 11:00:17,720 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 11:00:18,291 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 25 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-14 11:00:18,291 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 11:00:19,229 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 22 treesize of output 18 [2022-12-14 11:00:19,845 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 11:00:19,845 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 20 [2022-12-14 11:00:20,829 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 11:00:20,829 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 20 [2022-12-14 11:00:22,051 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 25 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-14 11:00:22,051 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [590386315] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 11:00:22,051 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1759323091] [2022-12-14 11:00:22,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:00:22,051 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 11:00:22,051 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30fedb40-a0b9-4db9-90fc-082cefc5fb5f/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 11:00:22,052 INFO L229 MonitoredProcess]: Starting monitored process 52 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30fedb40-a0b9-4db9-90fc-082cefc5fb5f/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 11:00:22,053 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30fedb40-a0b9-4db9-90fc-082cefc5fb5f/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Waiting until timeout for monitored process [2022-12-14 11:00:22,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:00:22,335 INFO L263 TraceCheckSpWp]: Trace formula consists of 421 conjuncts, 23 conjunts are in the unsatisfiable core [2022-12-14 11:00:22,337 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 11:00:22,795 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 25 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-14 11:00:22,795 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 11:00:23,586 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 22 treesize of output 18 [2022-12-14 11:00:24,063 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 11:00:24,063 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 20 [2022-12-14 11:00:25,166 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 11:00:25,166 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 20 [2022-12-14 11:00:25,700 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 25 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-14 11:00:25,700 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1759323091] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 11:00:25,700 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-12-14 11:00:25,700 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 12, 12, 11, 11] total 23 [2022-12-14 11:00:25,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235087562] [2022-12-14 11:00:25,700 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-12-14 11:00:25,701 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-12-14 11:00:25,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 11:00:25,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-12-14 11:00:25,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=494, Unknown=0, NotChecked=0, Total=552 [2022-12-14 11:00:25,703 INFO L87 Difference]: Start difference. First operand 305 states and 329 transitions. Second operand has 24 states, 21 states have (on average 3.619047619047619) internal successors, (76), 20 states have internal predecessors, (76), 7 states have call successors, (9), 3 states have call predecessors, (9), 5 states have return successors, (7), 7 states have call predecessors, (7), 5 states have call successors, (7) [2022-12-14 11:00:34,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 11:00:34,075 INFO L93 Difference]: Finished difference Result 306 states and 326 transitions. [2022-12-14 11:00:34,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-12-14 11:00:34,078 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 21 states have (on average 3.619047619047619) internal successors, (76), 20 states have internal predecessors, (76), 7 states have call successors, (9), 3 states have call predecessors, (9), 5 states have return successors, (7), 7 states have call predecessors, (7), 5 states have call successors, (7) Word has length 54 [2022-12-14 11:00:34,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 11:00:34,079 INFO L225 Difference]: With dead ends: 306 [2022-12-14 11:00:34,079 INFO L226 Difference]: Without dead ends: 306 [2022-12-14 11:00:34,079 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 336 GetRequests, 298 SyntacticMatches, 3 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 186 ImplicationChecksByTransitivity, 8.8s TimeCoverageRelationStatistics Valid=176, Invalid=1156, Unknown=0, NotChecked=0, Total=1332 [2022-12-14 11:00:34,079 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 238 mSDsluCounter, 609 mSDsCounter, 0 mSdLazyCounter, 601 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 239 SdHoareTripleChecker+Valid, 659 SdHoareTripleChecker+Invalid, 618 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 601 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2022-12-14 11:00:34,079 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [239 Valid, 659 Invalid, 618 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 601 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2022-12-14 11:00:34,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 306 states. [2022-12-14 11:00:34,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 306 to 303. [2022-12-14 11:00:34,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 303 states, 239 states have (on average 1.1715481171548117) internal successors, (280), 264 states have internal predecessors, (280), 20 states have call successors, (20), 20 states have call predecessors, (20), 24 states have return successors, (25), 18 states have call predecessors, (25), 20 states have call successors, (25) [2022-12-14 11:00:34,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 325 transitions. [2022-12-14 11:00:34,084 INFO L78 Accepts]: Start accepts. Automaton has 303 states and 325 transitions. Word has length 54 [2022-12-14 11:00:34,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 11:00:34,084 INFO L495 AbstractCegarLoop]: Abstraction has 303 states and 325 transitions. [2022-12-14 11:00:34,085 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 21 states have (on average 3.619047619047619) internal successors, (76), 20 states have internal predecessors, (76), 7 states have call successors, (9), 3 states have call predecessors, (9), 5 states have return successors, (7), 7 states have call predecessors, (7), 5 states have call successors, (7) [2022-12-14 11:00:34,085 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states and 325 transitions. [2022-12-14 11:00:34,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-12-14 11:00:34,085 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 11:00:34,085 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 11:00:34,092 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30fedb40-a0b9-4db9-90fc-082cefc5fb5f/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (51)] Ended with exit code 0 [2022-12-14 11:00:34,295 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30fedb40-a0b9-4db9-90fc-082cefc5fb5f/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Ended with exit code 0 [2022-12-14 11:00:34,520 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30fedb40-a0b9-4db9-90fc-082cefc5fb5f/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (50)] Ended with exit code 0 [2022-12-14 11:00:34,686 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30fedb40-a0b9-4db9-90fc-082cefc5fb5f/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt,52 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30fedb40-a0b9-4db9-90fc-082cefc5fb5f/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,50 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30fedb40-a0b9-4db9-90fc-082cefc5fb5f/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 11:00:34,687 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting list_add_tailErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_sub_listErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_sub_listErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_sub_listErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-12-14 11:00:34,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 11:00:34,688 INFO L85 PathProgramCache]: Analyzing trace with hash -828042884, now seen corresponding path program 1 times [2022-12-14 11:00:34,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 11:00:34,690 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1378917101] [2022-12-14 11:00:34,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:00:34,690 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 11:00:34,690 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30fedb40-a0b9-4db9-90fc-082cefc5fb5f/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 11:00:34,693 INFO L229 MonitoredProcess]: Starting monitored process 53 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30fedb40-a0b9-4db9-90fc-082cefc5fb5f/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 11:00:34,695 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30fedb40-a0b9-4db9-90fc-082cefc5fb5f/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (53)] Waiting until timeout for monitored process [2022-12-14 11:00:35,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:00:35,303 INFO L263 TraceCheckSpWp]: Trace formula consists of 447 conjuncts, 104 conjunts are in the unsatisfiable core [2022-12-14 11:00:35,308 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 11:00:35,356 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:00:35,357 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 18 [2022-12-14 11:00:35,504 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:00:35,674 INFO L321 Elim1Store]: treesize reduction 44, result has 34.3 percent of original size [2022-12-14 11:00:35,675 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 24 treesize of output 41 [2022-12-14 11:00:35,983 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 9 treesize of output 3 [2022-12-14 11:00:36,001 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:00:36,040 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 11:00:36,041 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 28 [2022-12-14 11:00:37,117 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 5 treesize of output 3 [2022-12-14 11:00:40,043 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 60 treesize of output 53 [2022-12-14 11:00:40,057 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:00:40,068 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:00:40,073 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:00:40,191 INFO L321 Elim1Store]: treesize reduction 47, result has 19.0 percent of original size [2022-12-14 11:00:40,191 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 40 treesize of output 37 [2022-12-14 11:00:40,228 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:00:40,244 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:00:40,361 INFO L321 Elim1Store]: treesize reduction 16, result has 48.4 percent of original size [2022-12-14 11:00:40,361 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 29 treesize of output 35 [2022-12-14 11:00:40,408 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 [2022-12-14 11:00:40,776 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 9 treesize of output 3 [2022-12-14 11:00:40,794 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 7 treesize of output 5 [2022-12-14 11:00:42,568 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 [2022-12-14 11:00:44,585 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_5075 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5077 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5078 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store (store (store |c_old(#memory_$Pointer$.base)| |c_list_add_tail_#in~head#1.base| v_ArrVal_5075) |c_list_add_tail_#in~new#1.base| v_ArrVal_5077) (select (select |c_old(#memory_$Pointer$.base)| |c_list_add_tail_#in~head#1.base|) (bvadd (_ bv4 32) |c_list_add_tail_#in~head#1.offset|)) v_ArrVal_5078))) (not (= |c_#StackHeapBarrier| (_ bv0 32))) (not (= (bvadd |c_#StackHeapBarrier| (_ bv1 32)) (_ bv0 32)))) is different from true [2022-12-14 11:00:44,735 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((|create_sub_list_insert_sub_~head#1.offset| (_ BitVec 32)) (v_ArrVal_5075 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5064 (_ BitVec 32)) (v_ArrVal_5065 (Array (_ BitVec 32) (_ BitVec 32))) (|create_sub_list_insert_sub_~sub~0#1.base| (_ BitVec 32)) (v_ArrVal_5077 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5078 (Array (_ BitVec 32) (_ BitVec 32)))) (and (= (let ((.cse1 (bvadd |create_sub_list_insert_sub_~head#1.offset| (_ bv4 32)))) (let ((.cse0 (store (store |c_old(#memory_$Pointer$.base)| |c_create_sub_list_#in~sub#1.base| (store (store (select |c_old(#memory_$Pointer$.base)| |c_create_sub_list_#in~sub#1.base|) .cse1 |c_create_sub_list_#in~sub#1.base|) |create_sub_list_insert_sub_~head#1.offset| v_ArrVal_5064)) |create_sub_list_insert_sub_~sub~0#1.base| v_ArrVal_5065))) (store (store (store .cse0 |c_create_sub_list_#in~sub#1.base| v_ArrVal_5075) |create_sub_list_insert_sub_~sub~0#1.base| v_ArrVal_5077) (select (select .cse0 |c_create_sub_list_#in~sub#1.base|) .cse1) v_ArrVal_5078))) |c_#memory_$Pointer$.base|) (= (_ bv0 1) (select |c_old(#valid)| |create_sub_list_insert_sub_~sub~0#1.base|)) (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 [2022-12-14 11:00:44,960 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 53 [2022-12-14 11:00:44,976 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:00:44,988 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:00:44,997 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:00:45,119 INFO L321 Elim1Store]: treesize reduction 47, result has 19.0 percent of original size [2022-12-14 11:00:45,119 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 40 treesize of output 37 [2022-12-14 11:00:45,137 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 28 treesize of output 16 [2022-12-14 11:00:45,199 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-12-14 11:00:45,200 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 13 treesize of output 13 [2022-12-14 11:00:46,265 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 19 treesize of output 7 [2022-12-14 11:00:47,098 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 4 proven. 19 refuted. 0 times theorem prover too weak. 5 trivial. 7 not checked. [2022-12-14 11:00:47,098 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 11:00:47,777 INFO L321 Elim1Store]: treesize reduction 7, result has 56.3 percent of original size [2022-12-14 11:00:47,777 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 22 treesize of output 21 [2022-12-14 11:00:50,897 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 11:00:50,897 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1378917101] [2022-12-14 11:00:50,897 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1378917101] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 11:00:50,897 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [915614650] [2022-12-14 11:00:50,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:00:50,897 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-12-14 11:00:50,897 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30fedb40-a0b9-4db9-90fc-082cefc5fb5f/bin/utaipan-gh47qXpMRh/cvc4 [2022-12-14 11:00:50,898 INFO L229 MonitoredProcess]: Starting monitored process 54 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30fedb40-a0b9-4db9-90fc-082cefc5fb5f/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-12-14 11:00:50,899 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30fedb40-a0b9-4db9-90fc-082cefc5fb5f/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (54)] Waiting until timeout for monitored process [2022-12-14 11:00:52,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:00:52,644 INFO L263 TraceCheckSpWp]: Trace formula consists of 447 conjuncts, 117 conjunts are in the unsatisfiable core [2022-12-14 11:00:52,649 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 11:00:53,050 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-12-14 11:00:53,050 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2022-12-14 11:00:53,522 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:00:53,582 INFO L321 Elim1Store]: treesize reduction 27, result has 20.6 percent of original size [2022-12-14 11:00:53,582 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 2 case distinctions, treesize of input 21 treesize of output 32 [2022-12-14 11:00:54,274 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:00:54,287 INFO L321 Elim1Store]: treesize reduction 20, result has 4.8 percent of original size [2022-12-14 11:00:54,287 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 22 treesize of output 16 [2022-12-14 11:00:54,308 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-12-14 11:00:57,063 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 [2022-12-14 11:00:59,261 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:00:59,263 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 69 treesize of output 63 [2022-12-14 11:00:59,277 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:00:59,297 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:00:59,301 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:00:59,306 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:00:59,418 INFO L321 Elim1Store]: treesize reduction 47, result has 19.0 percent of original size [2022-12-14 11:00:59,418 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 45 treesize of output 40 [2022-12-14 11:00:59,468 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:00:59,501 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:00:59,650 INFO L321 Elim1Store]: treesize reduction 71, result has 18.4 percent of original size [2022-12-14 11:00:59,650 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 33 treesize of output 48 [2022-12-14 11:00:59,725 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 [2022-12-14 11:01:00,416 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:01:00,438 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:01:00,443 INFO L321 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2022-12-14 11:01:00,443 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 16 [2022-12-14 11:01:00,455 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-12-14 11:01:05,107 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 [2022-12-14 11:01:13,594 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:01:13,595 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 57 [2022-12-14 11:01:13,619 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:01:13,649 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:01:13,654 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:01:13,661 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:01:13,791 INFO L321 Elim1Store]: treesize reduction 47, result has 19.0 percent of original size [2022-12-14 11:01:13,791 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 41 treesize of output 36 [2022-12-14 11:01:13,848 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:01:13,870 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:01:13,880 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:01:14,061 INFO L321 Elim1Store]: treesize reduction 54, result has 29.9 percent of original size [2022-12-14 11:01:14,061 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 33 treesize of output 55 [2022-12-14 11:01:14,289 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 [2022-12-14 11:01:17,497 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2022-12-14 11:01:19,948 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 9 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 11:01:19,948 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 11:01:23,453 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_5281 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5282 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5283 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5284 (_ BitVec 32)) (v_ArrVal_5285 (Array (_ BitVec 32) (_ BitVec 32))) (|v_create_sub_list_insert_sub_~sub~0#1.base_172| (_ BitVec 32))) (or (not (bvult |v_create_sub_list_insert_sub_~sub~0#1.base_172| |c_#StackHeapBarrier|)) (not (= (_ bv0 1) (select |c_#valid| |v_create_sub_list_insert_sub_~sub~0#1.base_172|))) (= (_ bv0 1) (bvadd (select (store |c_#valid| |v_create_sub_list_insert_sub_~sub~0#1.base_172| (_ bv1 1)) (select (select (let ((.cse1 (bvadd |c_ULTIMATE.start_insert_top_~top~0#1.offset| (_ bv20 32)))) (let ((.cse0 (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_insert_top_~top~0#1.base| (store (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_insert_top_~top~0#1.base|) .cse1 |c_ULTIMATE.start_insert_top_~top~0#1.base|) (bvadd (_ bv16 32) |c_ULTIMATE.start_insert_top_~top~0#1.offset|) v_ArrVal_5284)) |v_create_sub_list_insert_sub_~sub~0#1.base_172| v_ArrVal_5282))) (store (store (store .cse0 |c_ULTIMATE.start_insert_top_~top~0#1.base| v_ArrVal_5281) |v_create_sub_list_insert_sub_~sub~0#1.base_172| v_ArrVal_5283) (select (select .cse0 |c_ULTIMATE.start_insert_top_~top~0#1.base|) .cse1) v_ArrVal_5285))) |c_ULTIMATE.start_insert_top_~head#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_insert_top_~head#1.offset|))) (_ bv1 1))))) is different from false [2022-12-14 11:01:23,462 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [915614650] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 11:01:23,462 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1001785929] [2022-12-14 11:01:23,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 11:01:23,462 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 11:01:23,462 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30fedb40-a0b9-4db9-90fc-082cefc5fb5f/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 11:01:23,463 INFO L229 MonitoredProcess]: Starting monitored process 55 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30fedb40-a0b9-4db9-90fc-082cefc5fb5f/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 11:01:23,465 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_30fedb40-a0b9-4db9-90fc-082cefc5fb5f/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Waiting until timeout for monitored process [2022-12-14 11:01:23,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 11:01:23,750 INFO L263 TraceCheckSpWp]: Trace formula consists of 447 conjuncts, 113 conjunts are in the unsatisfiable core [2022-12-14 11:01:23,756 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 11:01:23,780 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-12-14 11:01:24,461 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 11:01:24,461 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2022-12-14 11:01:24,507 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 [2022-12-14 11:01:30,109 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 [2022-12-14 11:01:35,491 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_5425 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5426 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5423 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store (store (store |c_old(#memory_$Pointer$.base)| |c_list_add_tail_#in~head#1.base| v_ArrVal_5423) |c_list_add_tail_#in~new#1.base| v_ArrVal_5425) (select (select |c_old(#memory_$Pointer$.base)| |c_list_add_tail_#in~head#1.base|) (bvadd (_ bv4 32) |c_list_add_tail_#in~head#1.offset|)) v_ArrVal_5426))) is different from true [2022-12-14 11:01:36,761 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-14 11:01:36,807 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 53 [2022-12-14 11:01:36,822 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:01:36,833 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:01:36,838 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:01:36,938 INFO L321 Elim1Store]: treesize reduction 47, result has 19.0 percent of original size [2022-12-14 11:01:36,939 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 38 treesize of output 35 [2022-12-14 11:01:36,965 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 [2022-12-14 11:01:37,147 INFO L321 Elim1Store]: treesize reduction 44, result has 34.3 percent of original size [2022-12-14 11:01:37,148 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 [2022-12-14 11:01:45,975 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_5425 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5423 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5435 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store (store (store |c_old(#memory_$Pointer$.base)| |c_list_add_tail_#in~head#1.base| v_ArrVal_5423) |c_list_add_tail_#in~new#1.base| v_ArrVal_5425) (select (select |c_old(#memory_$Pointer$.base)| |c_list_add_tail_#in~head#1.base|) (bvadd (_ bv4 32) |c_list_add_tail_#in~head#1.offset|)) v_ArrVal_5435))) is different from true [2022-12-14 11:01:46,039 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_5425 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5423 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5429 (_ BitVec 32)) (v_ArrVal_5435 (Array (_ BitVec 32) (_ BitVec 32))) (|create_sub_list_insert_sub_~sub~0#1.base| (_ BitVec 32)) (v_ArrVal_5431 (Array (_ BitVec 32) (_ BitVec 32)))) (and (= |c_#memory_$Pointer$.base| (let ((.cse1 (bvadd (_ bv4 32) |c_create_sub_list_#in~sub#1.offset|))) (let ((.cse0 (store (store |c_old(#memory_$Pointer$.base)| |c_create_sub_list_#in~sub#1.base| (store (store (select |c_old(#memory_$Pointer$.base)| |c_create_sub_list_#in~sub#1.base|) .cse1 |c_create_sub_list_#in~sub#1.base|) |c_create_sub_list_#in~sub#1.offset| v_ArrVal_5429)) |create_sub_list_insert_sub_~sub~0#1.base| v_ArrVal_5431))) (store (store (store .cse0 |c_create_sub_list_#in~sub#1.base| v_ArrVal_5423) |create_sub_list_insert_sub_~sub~0#1.base| v_ArrVal_5425) (select (select .cse0 |c_create_sub_list_#in~sub#1.base|) .cse1) v_ArrVal_5435)))) (= (_ bv0 1) (select |c_old(#valid)| |create_sub_list_insert_sub_~sub~0#1.base|)))) is different from true [2022-12-14 11:01:46,149 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 47 [2022-12-14 11:01:46,160 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:01:46,169 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:01:46,174 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 11:01:46,259 INFO L321 Elim1Store]: treesize reduction 47, result has 19.0 percent of original size [2022-12-14 11:01:46,259 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 34 treesize of output 31 [2022-12-14 11:01:46,280 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 16 treesize of output 12 [2022-12-14 11:01:46,364 INFO L321 Elim1Store]: treesize reduction 12, result has 42.9 percent of original size [2022-12-14 11:01:46,364 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 [2022-12-14 11:01:48,394 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-12-14 11:01:49,091 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 1 proven. 21 refuted. 0 times theorem prover too weak. 6 trivial. 7 not checked. [2022-12-14 11:01:49,092 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 11:01:49,183 INFO L321 Elim1Store]: treesize reduction 7, result has 56.3 percent of original size [2022-12-14 11:01:49,183 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 22 treesize of output 21 [2022-12-14 11:01:50,866 WARN L837 $PredicateComparison]: unable to prove that (forall ((|v_create_sub_list_insert_sub_~sub~0#1.base_177| (_ BitVec 32)) (v_ArrVal_5460 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5463 (_ BitVec 32)) (v_ArrVal_5459 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5461 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5462 (Array (_ BitVec 32) (_ BitVec 32)))) (or (= (select (select (let ((.cse1 (bvadd |c_ULTIMATE.start_insert_top_~top~0#1.offset| (_ bv20 32)))) (let ((.cse0 (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_insert_top_~top~0#1.base| (store (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_insert_top_~top~0#1.base|) .cse1 |c_ULTIMATE.start_insert_top_~top~0#1.base|) (bvadd (_ bv16 32) |c_ULTIMATE.start_insert_top_~top~0#1.offset|) v_ArrVal_5463)) |v_create_sub_list_insert_sub_~sub~0#1.base_177| v_ArrVal_5462))) (store (store (store .cse0 |c_ULTIMATE.start_insert_top_~top~0#1.base| v_ArrVal_5461) |v_create_sub_list_insert_sub_~sub~0#1.base_177| v_ArrVal_5460) (select (select .cse0 |c_ULTIMATE.start_insert_top_~top~0#1.base|) .cse1) v_ArrVal_5459))) |c_ULTIMATE.start_insert_top_~head#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_insert_top_~head#1.offset|)) |c_ULTIMATE.start_insert_top_~head#1.base|) (not (= (_ bv0 1) (select |c_#valid| |v_create_sub_list_insert_sub_~sub~0#1.base_177|))))) is different from false [2022-12-14 11:01:50,875 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1001785929] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 11:01:50,875 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 11:01:50,875 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 39, 33] total 98 [2022-12-14 11:01:50,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052851803] [2022-12-14 11:01:50,875 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 11:01:50,875 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 99 states [2022-12-14 11:01:50,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 11:01:50,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 99 interpolants. [2022-12-14 11:01:50,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=438, Invalid=9783, Unknown=109, NotChecked=1442, Total=11772 [2022-12-14 11:01:50,877 INFO L87 Difference]: Start difference. First operand 303 states and 325 transitions. Second operand has 99 states, 87 states have (on average 1.4367816091954022) internal successors, (125), 82 states have internal predecessors, (125), 14 states have call successors, (14), 11 states have call predecessors, (14), 11 states have return successors, (12), 12 states have call predecessors, (12), 11 states have call successors, (12)