./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 8393723b 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_264ad1cc-aa93-4253-9da2-8bfa37ae3af4/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_264ad1cc-aa93-4253-9da2-8bfa37ae3af4/bin/uautomizer-TMbwUNV5ro/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_264ad1cc-aa93-4253-9da2-8bfa37ae3af4/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_264ad1cc-aa93-4253-9da2-8bfa37ae3af4/bin/uautomizer-TMbwUNV5ro/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety/test-0102-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_264ad1cc-aa93-4253-9da2-8bfa37ae3af4/bin/uautomizer-TMbwUNV5ro/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_264ad1cc-aa93-4253-9da2-8bfa37ae3af4/bin/uautomizer-TMbwUNV5ro --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 Automizer --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-8393723 [2022-11-18 18:26:24,856 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 18:26:24,858 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 18:26:24,890 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 18:26:24,893 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 18:26:24,897 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 18:26:24,899 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 18:26:24,900 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 18:26:24,902 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 18:26:24,903 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 18:26:24,904 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 18:26:24,905 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 18:26:24,905 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 18:26:24,906 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 18:26:24,913 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 18:26:24,916 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 18:26:24,918 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 18:26:24,925 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 18:26:24,928 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 18:26:24,934 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 18:26:24,936 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 18:26:24,939 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 18:26:24,942 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 18:26:24,944 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 18:26:24,948 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 18:26:24,948 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 18:26:24,949 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 18:26:24,950 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 18:26:24,950 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 18:26:24,951 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 18:26:24,952 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 18:26:24,952 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 18:26:24,953 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 18:26:24,954 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 18:26:24,955 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 18:26:24,956 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 18:26:24,956 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 18:26:24,957 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 18:26:24,957 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 18:26:24,958 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 18:26:24,959 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 18:26:24,960 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_264ad1cc-aa93-4253-9da2-8bfa37ae3af4/bin/uautomizer-TMbwUNV5ro/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-11-18 18:26:24,984 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 18:26:24,985 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 18:26:24,985 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 18:26:24,985 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 18:26:24,986 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 18:26:24,986 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 18:26:24,987 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 18:26:24,987 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 18:26:24,988 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 18:26:24,988 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 18:26:24,988 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 18:26:24,988 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-18 18:26:24,989 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 18:26:24,989 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 18:26:24,989 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 18:26:24,989 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-18 18:26:24,989 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-18 18:26:24,990 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-18 18:26:24,990 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 18:26:24,990 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-18 18:26:24,990 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 18:26:24,991 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 18:26:24,991 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 18:26:24,991 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 18:26:24,991 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 18:26:24,992 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 18:26:24,992 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 18:26:24,992 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 18:26:24,992 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 18:26:24,993 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 18:26:24,993 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_264ad1cc-aa93-4253-9da2-8bfa37ae3af4/bin/uautomizer-TMbwUNV5ro/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_264ad1cc-aa93-4253-9da2-8bfa37ae3af4/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d10910cb8c44ec8f982d35122d9e66670129ee7c874265953b685f7f63a30072 [2022-11-18 18:26:25,239 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 18:26:25,272 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 18:26:25,276 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 18:26:25,279 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 18:26:25,280 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 18:26:25,281 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_264ad1cc-aa93-4253-9da2-8bfa37ae3af4/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/memsafety/test-0102-2.i [2022-11-18 18:26:25,349 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_264ad1cc-aa93-4253-9da2-8bfa37ae3af4/bin/uautomizer-TMbwUNV5ro/data/40e5568ea/03bb0e31a84041e2a1035b09d2aa087d/FLAGcf12b4704 [2022-11-18 18:26:25,833 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 18:26:25,834 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_264ad1cc-aa93-4253-9da2-8bfa37ae3af4/sv-benchmarks/c/memsafety/test-0102-2.i [2022-11-18 18:26:25,847 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_264ad1cc-aa93-4253-9da2-8bfa37ae3af4/bin/uautomizer-TMbwUNV5ro/data/40e5568ea/03bb0e31a84041e2a1035b09d2aa087d/FLAGcf12b4704 [2022-11-18 18:26:26,162 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_264ad1cc-aa93-4253-9da2-8bfa37ae3af4/bin/uautomizer-TMbwUNV5ro/data/40e5568ea/03bb0e31a84041e2a1035b09d2aa087d [2022-11-18 18:26:26,165 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 18:26:26,167 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 18:26:26,168 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 18:26:26,169 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 18:26:26,172 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 18:26:26,173 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 06:26:26" (1/1) ... [2022-11-18 18:26:26,174 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e531a0e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:26:26, skipping insertion in model container [2022-11-18 18:26:26,175 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 06:26:26" (1/1) ... [2022-11-18 18:26:26,181 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 18:26:26,218 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 18:26:26,625 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 18:26:26,640 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2022-11-18 18:26:26,641 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@51d01ef4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:26:26, skipping insertion in model container [2022-11-18 18:26:26,641 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 18:26:26,642 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2022-11-18 18:26:26,645 INFO L158 Benchmark]: Toolchain (without parser) took 476.24ms. Allocated memory is still 113.2MB. Free memory was 83.7MB in the beginning and 86.1MB in the end (delta: -2.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-18 18:26:26,646 INFO L158 Benchmark]: CDTParser took 0.34ms. Allocated memory is still 113.2MB. Free memory is still 65.8MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-18 18:26:26,648 INFO L158 Benchmark]: CACSL2BoogieTranslator took 473.37ms. Allocated memory is still 113.2MB. Free memory was 83.7MB in the beginning and 86.1MB in the end (delta: -2.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-18 18:26:26,650 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34ms. Allocated memory is still 113.2MB. Free memory is still 65.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 473.37ms. Allocated memory is still 113.2MB. Free memory was 83.7MB in the beginning and 86.1MB in the end (delta: -2.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 551]: Unsupported Syntax Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_264ad1cc-aa93-4253-9da2-8bfa37ae3af4/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_264ad1cc-aa93-4253-9da2-8bfa37ae3af4/bin/uautomizer-TMbwUNV5ro/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_264ad1cc-aa93-4253-9da2-8bfa37ae3af4/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_264ad1cc-aa93-4253-9da2-8bfa37ae3af4/bin/uautomizer-TMbwUNV5ro/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety/test-0102-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_264ad1cc-aa93-4253-9da2-8bfa37ae3af4/bin/uautomizer-TMbwUNV5ro/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_264ad1cc-aa93-4253-9da2-8bfa37ae3af4/bin/uautomizer-TMbwUNV5ro --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 Automizer --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-8393723 [2022-11-18 18:26:28,931 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 18:26:28,935 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 18:26:28,973 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 18:26:28,974 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 18:26:28,978 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 18:26:28,981 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 18:26:28,988 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 18:26:28,991 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 18:26:28,997 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 18:26:28,998 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 18:26:29,001 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 18:26:29,001 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 18:26:29,004 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 18:26:29,006 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 18:26:29,007 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 18:26:29,009 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 18:26:29,011 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 18:26:29,017 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 18:26:29,025 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 18:26:29,028 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 18:26:29,030 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 18:26:29,035 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 18:26:29,037 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 18:26:29,047 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 18:26:29,047 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 18:26:29,048 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 18:26:29,050 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 18:26:29,051 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 18:26:29,052 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 18:26:29,053 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 18:26:29,054 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 18:26:29,056 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 18:26:29,057 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 18:26:29,058 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 18:26:29,059 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 18:26:29,060 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 18:26:29,060 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 18:26:29,061 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 18:26:29,063 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 18:26:29,064 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 18:26:29,069 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_264ad1cc-aa93-4253-9da2-8bfa37ae3af4/bin/uautomizer-TMbwUNV5ro/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2022-11-18 18:26:29,116 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 18:26:29,116 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 18:26:29,117 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 18:26:29,118 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 18:26:29,119 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 18:26:29,119 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 18:26:29,121 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 18:26:29,121 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 18:26:29,122 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 18:26:29,122 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 18:26:29,124 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 18:26:29,124 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-18 18:26:29,124 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 18:26:29,125 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 18:26:29,125 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 18:26:29,125 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-18 18:26:29,126 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-18 18:26:29,126 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-18 18:26:29,126 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 18:26:29,127 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-18 18:26:29,127 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-18 18:26:29,127 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-18 18:26:29,128 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 18:26:29,128 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 18:26:29,128 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 18:26:29,129 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 18:26:29,129 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 18:26:29,130 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 18:26:29,130 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 18:26:29,130 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 18:26:29,131 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-11-18 18:26:29,131 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-18 18:26:29,131 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-18 18:26:29,132 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_264ad1cc-aa93-4253-9da2-8bfa37ae3af4/bin/uautomizer-TMbwUNV5ro/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_264ad1cc-aa93-4253-9da2-8bfa37ae3af4/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d10910cb8c44ec8f982d35122d9e66670129ee7c874265953b685f7f63a30072 [2022-11-18 18:26:29,623 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 18:26:29,660 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 18:26:29,663 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 18:26:29,664 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 18:26:29,671 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 18:26:29,673 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_264ad1cc-aa93-4253-9da2-8bfa37ae3af4/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/memsafety/test-0102-2.i [2022-11-18 18:26:29,744 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_264ad1cc-aa93-4253-9da2-8bfa37ae3af4/bin/uautomizer-TMbwUNV5ro/data/a86ae2c36/14cd92c53f6b4f81bd6cddfb164b13c7/FLAG47bd95c16 [2022-11-18 18:26:30,324 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 18:26:30,324 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_264ad1cc-aa93-4253-9da2-8bfa37ae3af4/sv-benchmarks/c/memsafety/test-0102-2.i [2022-11-18 18:26:30,337 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_264ad1cc-aa93-4253-9da2-8bfa37ae3af4/bin/uautomizer-TMbwUNV5ro/data/a86ae2c36/14cd92c53f6b4f81bd6cddfb164b13c7/FLAG47bd95c16 [2022-11-18 18:26:30,621 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_264ad1cc-aa93-4253-9da2-8bfa37ae3af4/bin/uautomizer-TMbwUNV5ro/data/a86ae2c36/14cd92c53f6b4f81bd6cddfb164b13c7 [2022-11-18 18:26:30,624 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 18:26:30,625 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 18:26:30,631 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 18:26:30,631 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 18:26:30,636 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 18:26:30,636 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 06:26:30" (1/1) ... [2022-11-18 18:26:30,638 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63781ab5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:26:30, skipping insertion in model container [2022-11-18 18:26:30,638 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 06:26:30" (1/1) ... [2022-11-18 18:26:30,646 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 18:26:30,720 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 18:26:31,101 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 18:26:31,119 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-11-18 18:26:31,128 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 18:26:31,157 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 18:26:31,162 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 18:26:31,202 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 18:26:31,234 INFO L208 MainTranslator]: Completed translation [2022-11-18 18:26:31,234 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:26:31 WrapperNode [2022-11-18 18:26:31,234 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 18:26:31,235 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 18:26:31,235 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 18:26:31,236 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 18:26:31,243 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:26:31" (1/1) ... [2022-11-18 18:26:31,262 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:26:31" (1/1) ... [2022-11-18 18:26:31,288 INFO L138 Inliner]: procedures = 136, calls = 37, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 101 [2022-11-18 18:26:31,288 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 18:26:31,289 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 18:26:31,289 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 18:26:31,289 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 18:26:31,299 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:26:31" (1/1) ... [2022-11-18 18:26:31,300 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:26:31" (1/1) ... [2022-11-18 18:26:31,305 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:26:31" (1/1) ... [2022-11-18 18:26:31,306 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:26:31" (1/1) ... [2022-11-18 18:26:31,315 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:26:31" (1/1) ... [2022-11-18 18:26:31,320 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:26:31" (1/1) ... [2022-11-18 18:26:31,322 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:26:31" (1/1) ... [2022-11-18 18:26:31,324 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:26:31" (1/1) ... [2022-11-18 18:26:31,327 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 18:26:31,328 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 18:26:31,328 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 18:26:31,329 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 18:26:31,330 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:26:31" (1/1) ... [2022-11-18 18:26:31,336 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 18:26:31,356 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_264ad1cc-aa93-4253-9da2-8bfa37ae3af4/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:26:31,371 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_264ad1cc-aa93-4253-9da2-8bfa37ae3af4/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 18:26:31,386 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_264ad1cc-aa93-4253-9da2-8bfa37ae3af4/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 18:26:31,425 INFO L130 BoogieDeclarations]: Found specification of procedure list_add_tail [2022-11-18 18:26:31,425 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add_tail [2022-11-18 18:26:31,425 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-18 18:26:31,426 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 18:26:31,426 INFO L130 BoogieDeclarations]: Found specification of procedure create_sub_list [2022-11-18 18:26:31,426 INFO L138 BoogieDeclarations]: Found implementation of procedure create_sub_list [2022-11-18 18:26:31,427 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-18 18:26:31,434 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-18 18:26:31,434 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-18 18:26:31,435 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-11-18 18:26:31,435 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-18 18:26:31,435 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-18 18:26:31,435 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-18 18:26:31,435 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 18:26:31,435 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 18:26:31,677 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 18:26:31,679 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 18:26:32,276 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 18:26:32,283 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 18:26:32,284 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-11-18 18:26:32,286 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 06:26:32 BoogieIcfgContainer [2022-11-18 18:26:32,286 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 18:26:32,288 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 18:26:32,288 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 18:26:32,291 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 18:26:32,291 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 06:26:30" (1/3) ... [2022-11-18 18:26:32,292 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@fe74c36 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 06:26:32, skipping insertion in model container [2022-11-18 18:26:32,292 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:26:31" (2/3) ... [2022-11-18 18:26:32,293 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@fe74c36 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 06:26:32, skipping insertion in model container [2022-11-18 18:26:32,293 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 06:26:32" (3/3) ... [2022-11-18 18:26:32,294 INFO L112 eAbstractionObserver]: Analyzing ICFG test-0102-2.i [2022-11-18 18:26:32,313 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 18:26:32,314 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 31 error locations. [2022-11-18 18:26:32,364 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 18:26:32,371 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;@61e766c9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 18:26:32,371 INFO L358 AbstractCegarLoop]: Starting to check reachability of 31 error locations. [2022-11-18 18:26:32,376 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) [2022-11-18 18:26:32,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-18 18:26:32,384 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:26:32,385 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-18 18:26:32,386 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_sub_listErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_sub_listErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_sub_listErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-18 18:26:32,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:26:32,392 INFO L85 PathProgramCache]: Analyzing trace with hash 60205689, now seen corresponding path program 1 times [2022-11-18 18:26:32,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:26:32,408 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [836329992] [2022-11-18 18:26:32,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:26:32,408 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:26:32,409 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_264ad1cc-aa93-4253-9da2-8bfa37ae3af4/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:26:32,415 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_264ad1cc-aa93-4253-9da2-8bfa37ae3af4/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:26:32,441 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_264ad1cc-aa93-4253-9da2-8bfa37ae3af4/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-18 18:26:32,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:26:32,523 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 1 conjunts are in the unsatisfiable core [2022-11-18 18:26:32,526 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:26:32,549 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:26:32,550 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:26:32,550 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:26:32,552 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [836329992] [2022-11-18 18:26:32,552 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [836329992] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:26:32,552 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:26:32,553 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 18:26:32,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142463382] [2022-11-18 18:26:32,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:26:32,563 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-18 18:26:32,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:26:32,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-18 18:26:32,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-18 18:26:32,605 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) [2022-11-18 18:26:32,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:26:32,641 INFO L93 Difference]: Finished difference Result 83 states and 88 transitions. [2022-11-18 18:26:32,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-18 18:26:32,643 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-18 18:26:32,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:26:32,655 INFO L225 Difference]: With dead ends: 83 [2022-11-18 18:26:32,656 INFO L226 Difference]: Without dead ends: 81 [2022-11-18 18:26:32,657 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-18 18:26:32,661 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 [2022-11-18 18:26:32,667 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] [2022-11-18 18:26:32,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2022-11-18 18:26:32,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2022-11-18 18:26:32,698 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) [2022-11-18 18:26:32,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 86 transitions. [2022-11-18 18:26:32,701 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 86 transitions. Word has length 5 [2022-11-18 18:26:32,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:26:32,702 INFO L495 AbstractCegarLoop]: Abstraction has 81 states and 86 transitions. [2022-11-18 18:26:32,702 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:26:32,702 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 86 transitions. [2022-11-18 18:26:32,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-18 18:26:32,702 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:26:32,703 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:26:32,715 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_264ad1cc-aa93-4253-9da2-8bfa37ae3af4/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-11-18 18:26:32,907 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_264ad1cc-aa93-4253-9da2-8bfa37ae3af4/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:26:32,907 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting create_sub_listErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_sub_listErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_sub_listErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_sub_listErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-18 18:26:32,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:26:32,908 INFO L85 PathProgramCache]: Analyzing trace with hash 2005144647, now seen corresponding path program 1 times [2022-11-18 18:26:32,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:26:32,909 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [24354109] [2022-11-18 18:26:32,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:26:32,909 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:26:32,909 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_264ad1cc-aa93-4253-9da2-8bfa37ae3af4/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:26:32,914 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_264ad1cc-aa93-4253-9da2-8bfa37ae3af4/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:26:32,918 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_264ad1cc-aa93-4253-9da2-8bfa37ae3af4/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-18 18:26:33,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:26:33,017 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-18 18:26:33,020 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:26:33,077 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 7 [2022-11-18 18:26:33,128 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:26:33,129 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:26:33,129 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:26:33,129 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [24354109] [2022-11-18 18:26:33,130 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [24354109] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:26:33,130 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:26:33,130 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 18:26:33,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989354867] [2022-11-18 18:26:33,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:26:33,132 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 18:26:33,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:26:33,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 18:26:33,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-18 18:26:33,134 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) [2022-11-18 18:26:33,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:26:33,471 INFO L93 Difference]: Finished difference Result 108 states and 115 transitions. [2022-11-18 18:26:33,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 18:26:33,472 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-11-18 18:26:33,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:26:33,473 INFO L225 Difference]: With dead ends: 108 [2022-11-18 18:26:33,473 INFO L226 Difference]: Without dead ends: 108 [2022-11-18 18:26:33,474 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-18 18:26:33,475 INFO L413 NwaCegarLoop]: 60 mSDtfsCounter, 60 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s 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, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 18:26:33,476 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 162 Invalid, 140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-18 18:26:33,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2022-11-18 18:26:33,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 79. [2022-11-18 18:26:33,482 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) [2022-11-18 18:26:33,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 84 transitions. [2022-11-18 18:26:33,484 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 84 transitions. Word has length 7 [2022-11-18 18:26:33,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:26:33,484 INFO L495 AbstractCegarLoop]: Abstraction has 79 states and 84 transitions. [2022-11-18 18:26:33,485 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:26:33,485 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 84 transitions. [2022-11-18 18:26:33,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-18 18:26:33,485 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:26:33,485 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:26:33,502 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_264ad1cc-aa93-4253-9da2-8bfa37ae3af4/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-18 18:26:33,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_264ad1cc-aa93-4253-9da2-8bfa37ae3af4/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:26:33,695 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting create_sub_listErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_sub_listErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_sub_listErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_sub_listErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-18 18:26:33,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:26:33,696 INFO L85 PathProgramCache]: Analyzing trace with hash 2005144648, now seen corresponding path program 1 times [2022-11-18 18:26:33,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:26:33,697 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1415563573] [2022-11-18 18:26:33,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:26:33,697 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:26:33,697 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_264ad1cc-aa93-4253-9da2-8bfa37ae3af4/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:26:33,699 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_264ad1cc-aa93-4253-9da2-8bfa37ae3af4/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:26:33,705 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_264ad1cc-aa93-4253-9da2-8bfa37ae3af4/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-11-18 18:26:33,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:26:33,794 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-18 18:26:33,796 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:26:33,808 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-18 18:26:33,896 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:26:33,896 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:26:33,896 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:26:33,897 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1415563573] [2022-11-18 18:26:33,897 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1415563573] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:26:33,897 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:26:33,897 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 18:26:33,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816909957] [2022-11-18 18:26:33,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:26:33,898 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 18:26:33,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:26:33,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 18:26:33,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-18 18:26:33,900 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) [2022-11-18 18:26:34,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:26:34,294 INFO L93 Difference]: Finished difference Result 83 states and 88 transitions. [2022-11-18 18:26:34,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 18:26:34,296 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-11-18 18:26:34,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:26:34,297 INFO L225 Difference]: With dead ends: 83 [2022-11-18 18:26:34,298 INFO L226 Difference]: Without dead ends: 83 [2022-11-18 18:26:34,299 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-18 18:26:34,303 INFO L413 NwaCegarLoop]: 79 mSDtfsCounter, 5 mSDsluCounter, 155 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s 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, 0.4s IncrementalHoareTripleChecker+Time [2022-11-18 18:26:34,303 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 234 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-18 18:26:34,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2022-11-18 18:26:34,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 82. [2022-11-18 18:26:34,311 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) [2022-11-18 18:26:34,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 87 transitions. [2022-11-18 18:26:34,313 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 87 transitions. Word has length 7 [2022-11-18 18:26:34,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:26:34,313 INFO L495 AbstractCegarLoop]: Abstraction has 82 states and 87 transitions. [2022-11-18 18:26:34,313 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:26:34,314 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 87 transitions. [2022-11-18 18:26:34,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-18 18:26:34,314 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:26:34,314 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:26:34,333 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_264ad1cc-aa93-4253-9da2-8bfa37ae3af4/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-11-18 18:26:34,527 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_264ad1cc-aa93-4253-9da2-8bfa37ae3af4/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:26:34,528 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting create_sub_listErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_sub_listErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_sub_listErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_sub_listErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-18 18:26:34,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:26:34,529 INFO L85 PathProgramCache]: Analyzing trace with hash 859208239, now seen corresponding path program 1 times [2022-11-18 18:26:34,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:26:34,529 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [879466909] [2022-11-18 18:26:34,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:26:34,530 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:26:34,530 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_264ad1cc-aa93-4253-9da2-8bfa37ae3af4/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:26:34,531 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_264ad1cc-aa93-4253-9da2-8bfa37ae3af4/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:26:34,545 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_264ad1cc-aa93-4253-9da2-8bfa37ae3af4/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-11-18 18:26:34,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:26:34,639 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-18 18:26:34,642 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:26:34,652 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-18 18:26:34,665 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:26:34,665 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:26:34,666 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:26:34,668 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [879466909] [2022-11-18 18:26:34,668 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [879466909] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:26:34,669 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:26:34,669 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 18:26:34,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196252290] [2022-11-18 18:26:34,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:26:34,669 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 18:26:34,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:26:34,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 18:26:34,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:26:34,671 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) [2022-11-18 18:26:34,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:26:34,826 INFO L93 Difference]: Finished difference Result 82 states and 87 transitions. [2022-11-18 18:26:34,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 18:26:34,828 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-11-18 18:26:34,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:26:34,829 INFO L225 Difference]: With dead ends: 82 [2022-11-18 18:26:34,829 INFO L226 Difference]: Without dead ends: 82 [2022-11-18 18:26:34,829 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:26:34,830 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 [2022-11-18 18:26:34,831 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] [2022-11-18 18:26:34,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2022-11-18 18:26:34,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 81. [2022-11-18 18:26:34,838 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) [2022-11-18 18:26:34,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 86 transitions. [2022-11-18 18:26:34,840 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 86 transitions. Word has length 11 [2022-11-18 18:26:34,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:26:34,840 INFO L495 AbstractCegarLoop]: Abstraction has 81 states and 86 transitions. [2022-11-18 18:26:34,840 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:26:34,841 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 86 transitions. [2022-11-18 18:26:34,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-18 18:26:34,841 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:26:34,842 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:26:34,859 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_264ad1cc-aa93-4253-9da2-8bfa37ae3af4/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-11-18 18:26:35,053 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_264ad1cc-aa93-4253-9da2-8bfa37ae3af4/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:26:35,054 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting create_sub_listErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_sub_listErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_sub_listErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_sub_listErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-18 18:26:35,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:26:35,055 INFO L85 PathProgramCache]: Analyzing trace with hash 859208240, now seen corresponding path program 1 times [2022-11-18 18:26:35,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:26:35,055 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1752932829] [2022-11-18 18:26:35,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:26:35,056 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:26:35,056 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_264ad1cc-aa93-4253-9da2-8bfa37ae3af4/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:26:35,057 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_264ad1cc-aa93-4253-9da2-8bfa37ae3af4/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:26:35,060 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_264ad1cc-aa93-4253-9da2-8bfa37ae3af4/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-11-18 18:26:35,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:26:35,150 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-18 18:26:35,152 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:26:35,165 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 [2022-11-18 18:26:35,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:26:35,197 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:26:35,197 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:26:35,197 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1752932829] [2022-11-18 18:26:35,197 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1752932829] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:26:35,197 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:26:35,198 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 18:26:35,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221549718] [2022-11-18 18:26:35,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:26:35,201 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 18:26:35,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:26:35,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 18:26:35,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:26:35,202 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) [2022-11-18 18:26:35,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:26:35,366 INFO L93 Difference]: Finished difference Result 81 states and 86 transitions. [2022-11-18 18:26:35,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 18:26:35,368 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-11-18 18:26:35,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:26:35,369 INFO L225 Difference]: With dead ends: 81 [2022-11-18 18:26:35,369 INFO L226 Difference]: Without dead ends: 81 [2022-11-18 18:26:35,369 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:26:35,370 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, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 18:26:35,371 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 126 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-18 18:26:35,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2022-11-18 18:26:35,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 80. [2022-11-18 18:26:35,376 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) [2022-11-18 18:26:35,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 85 transitions. [2022-11-18 18:26:35,378 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 85 transitions. Word has length 11 [2022-11-18 18:26:35,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:26:35,378 INFO L495 AbstractCegarLoop]: Abstraction has 80 states and 85 transitions. [2022-11-18 18:26:35,378 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:26:35,378 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 85 transitions. [2022-11-18 18:26:35,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-18 18:26:35,379 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:26:35,379 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:26:35,400 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_264ad1cc-aa93-4253-9da2-8bfa37ae3af4/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-11-18 18:26:35,580 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_264ad1cc-aa93-4253-9da2-8bfa37ae3af4/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:26:35,580 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)] === [2022-11-18 18:26:35,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:26:35,581 INFO L85 PathProgramCache]: Analyzing trace with hash -1332328513, now seen corresponding path program 1 times [2022-11-18 18:26:35,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:26:35,581 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [806183600] [2022-11-18 18:26:35,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:26:35,582 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:26:35,582 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_264ad1cc-aa93-4253-9da2-8bfa37ae3af4/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:26:35,583 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_264ad1cc-aa93-4253-9da2-8bfa37ae3af4/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:26:35,584 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_264ad1cc-aa93-4253-9da2-8bfa37ae3af4/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-11-18 18:26:35,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:26:35,727 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-18 18:26:35,730 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:26:35,736 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-18 18:26:35,802 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-18 18:26:35,803 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2022-11-18 18:26:35,869 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:26:35,869 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:26:35,870 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:26:35,870 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [806183600] [2022-11-18 18:26:35,870 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [806183600] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:26:35,870 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:26:35,870 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 18:26:35,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823594285] [2022-11-18 18:26:35,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:26:35,871 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 18:26:35,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:26:35,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 18:26:35,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-18 18:26:35,872 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) [2022-11-18 18:26:36,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:26:36,434 INFO L93 Difference]: Finished difference Result 129 states and 135 transitions. [2022-11-18 18:26:36,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 18:26:36,435 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 6 states have internal predecessors, (12), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-11-18 18:26:36,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:26:36,436 INFO L225 Difference]: With dead ends: 129 [2022-11-18 18:26:36,436 INFO L226 Difference]: Without dead ends: 129 [2022-11-18 18:26:36,436 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-11-18 18:26:36,437 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 108 mSDsluCounter, 190 mSDsCounter, 0 mSdLazyCounter, 283 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s 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, 0.5s IncrementalHoareTripleChecker+Time [2022-11-18 18:26:36,438 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 235 Invalid, 292 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 283 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-18 18:26:36,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2022-11-18 18:26:36,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 90. [2022-11-18 18:26:36,444 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) [2022-11-18 18:26:36,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 103 transitions. [2022-11-18 18:26:36,445 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 103 transitions. Word has length 14 [2022-11-18 18:26:36,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:26:36,446 INFO L495 AbstractCegarLoop]: Abstraction has 90 states and 103 transitions. [2022-11-18 18:26:36,446 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 6 states have internal predecessors, (12), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:26:36,446 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 103 transitions. [2022-11-18 18:26:36,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-18 18:26:36,447 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:26:36,447 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:26:36,467 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_264ad1cc-aa93-4253-9da2-8bfa37ae3af4/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-11-18 18:26:36,659 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_264ad1cc-aa93-4253-9da2-8bfa37ae3af4/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:26:36,660 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)] === [2022-11-18 18:26:36,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:26:36,660 INFO L85 PathProgramCache]: Analyzing trace with hash -1332328512, now seen corresponding path program 1 times [2022-11-18 18:26:36,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:26:36,660 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [35292340] [2022-11-18 18:26:36,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:26:36,661 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:26:36,661 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_264ad1cc-aa93-4253-9da2-8bfa37ae3af4/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:26:36,662 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_264ad1cc-aa93-4253-9da2-8bfa37ae3af4/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:26:36,663 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_264ad1cc-aa93-4253-9da2-8bfa37ae3af4/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-11-18 18:26:36,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:26:36,819 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-18 18:26:36,823 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:26:36,832 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-18 18:26:36,840 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-18 18:26:36,974 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:26:36,975 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-18 18:26:36,992 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-18 18:26:36,992 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-11-18 18:26:37,082 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:26:37,082 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:26:37,082 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:26:37,082 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [35292340] [2022-11-18 18:26:37,083 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [35292340] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:26:37,083 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:26:37,083 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 18:26:37,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882871149] [2022-11-18 18:26:37,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:26:37,084 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 18:26:37,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:26:37,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 18:26:37,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-18 18:26:37,085 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) [2022-11-18 18:26:37,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:26:37,842 INFO L93 Difference]: Finished difference Result 117 states and 130 transitions. [2022-11-18 18:26:37,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-18 18:26:37,843 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 6 states have internal predecessors, (12), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-11-18 18:26:37,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:26:37,844 INFO L225 Difference]: With dead ends: 117 [2022-11-18 18:26:37,844 INFO L226 Difference]: Without dead ends: 117 [2022-11-18 18:26:37,845 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-11-18 18:26:37,845 INFO L413 NwaCegarLoop]: 64 mSDtfsCounter, 52 mSDsluCounter, 234 mSDsCounter, 0 mSdLazyCounter, 280 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s 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, 0.7s IncrementalHoareTripleChecker+Time [2022-11-18 18:26:37,846 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 298 Invalid, 286 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 280 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-18 18:26:37,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2022-11-18 18:26:37,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 108. [2022-11-18 18:26:37,852 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) [2022-11-18 18:26:37,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 129 transitions. [2022-11-18 18:26:37,853 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 129 transitions. Word has length 14 [2022-11-18 18:26:37,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:26:37,854 INFO L495 AbstractCegarLoop]: Abstraction has 108 states and 129 transitions. [2022-11-18 18:26:37,854 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 6 states have internal predecessors, (12), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:26:37,854 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 129 transitions. [2022-11-18 18:26:37,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-18 18:26:37,855 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:26:37,855 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:26:37,881 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_264ad1cc-aa93-4253-9da2-8bfa37ae3af4/bin/uautomizer-TMbwUNV5ro/mathsat -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 [2022-11-18 18:26:38,068 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_264ad1cc-aa93-4253-9da2-8bfa37ae3af4/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:26:38,068 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting list_add_tailErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_sub_listErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_sub_listErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_sub_listErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-18 18:26:38,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:26:38,069 INFO L85 PathProgramCache]: Analyzing trace with hash -467443808, now seen corresponding path program 1 times [2022-11-18 18:26:38,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:26:38,069 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [879254463] [2022-11-18 18:26:38,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:26:38,070 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:26:38,070 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_264ad1cc-aa93-4253-9da2-8bfa37ae3af4/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:26:38,075 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_264ad1cc-aa93-4253-9da2-8bfa37ae3af4/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:26:38,080 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_264ad1cc-aa93-4253-9da2-8bfa37ae3af4/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-11-18 18:26:38,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:26:38,212 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-18 18:26:38,213 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:26:38,239 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:26:38,239 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:26:38,239 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:26:38,239 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [879254463] [2022-11-18 18:26:38,240 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [879254463] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:26:38,240 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:26:38,240 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 18:26:38,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623517731] [2022-11-18 18:26:38,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:26:38,241 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 18:26:38,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:26:38,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 18:26:38,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 18:26:38,242 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) [2022-11-18 18:26:38,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:26:38,396 INFO L93 Difference]: Finished difference Result 107 states and 126 transitions. [2022-11-18 18:26:38,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 18:26:38,397 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-11-18 18:26:38,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:26:38,398 INFO L225 Difference]: With dead ends: 107 [2022-11-18 18:26:38,398 INFO L226 Difference]: Without dead ends: 107 [2022-11-18 18:26:38,398 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 18:26:38,399 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 [2022-11-18 18:26:38,399 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] [2022-11-18 18:26:38,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2022-11-18 18:26:38,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 107. [2022-11-18 18:26:38,404 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) [2022-11-18 18:26:38,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 126 transitions. [2022-11-18 18:26:38,406 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 126 transitions. Word has length 16 [2022-11-18 18:26:38,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:26:38,406 INFO L495 AbstractCegarLoop]: Abstraction has 107 states and 126 transitions. [2022-11-18 18:26:38,406 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:26:38,406 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 126 transitions. [2022-11-18 18:26:38,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-18 18:26:38,407 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:26:38,407 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:26:38,423 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_264ad1cc-aa93-4253-9da2-8bfa37ae3af4/bin/uautomizer-TMbwUNV5ro/mathsat -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 [2022-11-18 18:26:38,619 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_264ad1cc-aa93-4253-9da2-8bfa37ae3af4/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:26:38,620 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting list_add_tailErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_sub_listErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_sub_listErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_sub_listErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-18 18:26:38,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:26:38,620 INFO L85 PathProgramCache]: Analyzing trace with hash -467443807, now seen corresponding path program 1 times [2022-11-18 18:26:38,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:26:38,620 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [641217651] [2022-11-18 18:26:38,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:26:38,621 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:26:38,621 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_264ad1cc-aa93-4253-9da2-8bfa37ae3af4/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:26:38,622 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_264ad1cc-aa93-4253-9da2-8bfa37ae3af4/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:26:38,623 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_264ad1cc-aa93-4253-9da2-8bfa37ae3af4/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-11-18 18:26:38,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:26:38,761 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-18 18:26:38,762 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:26:38,907 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:26:38,907 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:26:38,907 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:26:38,907 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [641217651] [2022-11-18 18:26:38,907 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [641217651] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:26:38,907 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:26:38,907 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-18 18:26:38,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750506564] [2022-11-18 18:26:38,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:26:38,908 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-18 18:26:38,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:26:38,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-18 18:26:38,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-11-18 18:26:38,909 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) [2022-11-18 18:26:39,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:26:39,386 INFO L93 Difference]: Finished difference Result 115 states and 127 transitions. [2022-11-18 18:26:39,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-18 18:26:39,387 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 8 states have internal predecessors, (14), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-11-18 18:26:39,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:26:39,388 INFO L225 Difference]: With dead ends: 115 [2022-11-18 18:26:39,388 INFO L226 Difference]: Without dead ends: 115 [2022-11-18 18:26:39,388 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2022-11-18 18:26:39,389 INFO L413 NwaCegarLoop]: 66 mSDtfsCounter, 114 mSDsluCounter, 390 mSDsCounter, 0 mSdLazyCounter, 165 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 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, 0.4s IncrementalHoareTripleChecker+Time [2022-11-18 18:26:39,389 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 456 Invalid, 168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 165 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-18 18:26:39,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2022-11-18 18:26:39,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 107. [2022-11-18 18:26:39,394 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) [2022-11-18 18:26:39,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 125 transitions. [2022-11-18 18:26:39,395 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 125 transitions. Word has length 16 [2022-11-18 18:26:39,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:26:39,396 INFO L495 AbstractCegarLoop]: Abstraction has 107 states and 125 transitions. [2022-11-18 18:26:39,396 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 8 states have internal predecessors, (14), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:26:39,396 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 125 transitions. [2022-11-18 18:26:39,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-18 18:26:39,396 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:26:39,396 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:26:39,415 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_264ad1cc-aa93-4253-9da2-8bfa37ae3af4/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-11-18 18:26:39,609 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_264ad1cc-aa93-4253-9da2-8bfa37ae3af4/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:26:39,609 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting list_add_tailErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_sub_listErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_sub_listErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_sub_listErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-18 18:26:39,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:26:39,610 INFO L85 PathProgramCache]: Analyzing trace with hash -1605856063, now seen corresponding path program 1 times [2022-11-18 18:26:39,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:26:39,610 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [65159429] [2022-11-18 18:26:39,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:26:39,611 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:26:39,611 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_264ad1cc-aa93-4253-9da2-8bfa37ae3af4/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:26:39,612 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_264ad1cc-aa93-4253-9da2-8bfa37ae3af4/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:26:39,617 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_264ad1cc-aa93-4253-9da2-8bfa37ae3af4/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-11-18 18:26:39,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:26:39,759 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-18 18:26:39,761 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:26:39,774 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-18 18:26:39,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:26:39,827 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:26:39,827 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:26:39,828 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [65159429] [2022-11-18 18:26:39,828 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [65159429] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:26:39,828 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:26:39,828 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 18:26:39,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598896035] [2022-11-18 18:26:39,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:26:39,829 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 18:26:39,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:26:39,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 18:26:39,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-18 18:26:39,830 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) [2022-11-18 18:26:40,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:26:40,190 INFO L93 Difference]: Finished difference Result 114 states and 122 transitions. [2022-11-18 18:26:40,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 18:26:40,191 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-11-18 18:26:40,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:26:40,192 INFO L225 Difference]: With dead ends: 114 [2022-11-18 18:26:40,192 INFO L226 Difference]: Without dead ends: 114 [2022-11-18 18:26:40,192 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-11-18 18:26:40,193 INFO L413 NwaCegarLoop]: 67 mSDtfsCounter, 49 mSDsluCounter, 159 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s 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, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 18:26:40,193 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 226 Invalid, 164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-18 18:26:40,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2022-11-18 18:26:40,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 106. [2022-11-18 18:26:40,206 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) [2022-11-18 18:26:40,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 120 transitions. [2022-11-18 18:26:40,207 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 120 transitions. Word has length 17 [2022-11-18 18:26:40,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:26:40,207 INFO L495 AbstractCegarLoop]: Abstraction has 106 states and 120 transitions. [2022-11-18 18:26:40,208 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:26:40,208 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 120 transitions. [2022-11-18 18:26:40,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-18 18:26:40,208 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:26:40,209 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:26:40,227 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_264ad1cc-aa93-4253-9da2-8bfa37ae3af4/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-11-18 18:26:40,421 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_264ad1cc-aa93-4253-9da2-8bfa37ae3af4/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:26:40,421 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting list_add_tailErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_sub_listErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_sub_listErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_sub_listErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-18 18:26:40,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:26:40,422 INFO L85 PathProgramCache]: Analyzing trace with hash -1605856062, now seen corresponding path program 1 times [2022-11-18 18:26:40,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:26:40,422 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1130936413] [2022-11-18 18:26:40,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:26:40,422 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 [2022-11-18 18:26:40,423 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_264ad1cc-aa93-4253-9da2-8bfa37ae3af4/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:26:40,423 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_264ad1cc-aa93-4253-9da2-8bfa37ae3af4/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:26:40,425 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_264ad1cc-aa93-4253-9da2-8bfa37ae3af4/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-11-18 18:26:40,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:26:40,571 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-18 18:26:40,573 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:26:40,580 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-18 18:26:40,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:26:40,675 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:26:40,675 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:26:40,675 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1130936413] [2022-11-18 18:26:40,675 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1130936413] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:26:40,675 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:26:40,676 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 18:26:40,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332090845] [2022-11-18 18:26:40,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:26:40,676 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 18:26:40,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:26:40,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 18:26:40,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-18 18:26:40,677 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) [2022-11-18 18:26:41,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:26:41,114 INFO L93 Difference]: Finished difference Result 112 states and 118 transitions. [2022-11-18 18:26:41,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 18:26:41,123 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-11-18 18:26:41,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:26:41,124 INFO L225 Difference]: With dead ends: 112 [2022-11-18 18:26:41,124 INFO L226 Difference]: Without dead ends: 112 [2022-11-18 18:26:41,124 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-11-18 18:26:41,125 INFO L413 NwaCegarLoop]: 67 mSDtfsCounter, 36 mSDsluCounter, 179 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s 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, 0.4s IncrementalHoareTripleChecker+Time [2022-11-18 18:26:41,125 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 246 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 149 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-18 18:26:41,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2022-11-18 18:26:41,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 106. [2022-11-18 18:26:41,129 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) [2022-11-18 18:26:41,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 116 transitions. [2022-11-18 18:26:41,130 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 116 transitions. Word has length 17 [2022-11-18 18:26:41,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:26:41,131 INFO L495 AbstractCegarLoop]: Abstraction has 106 states and 116 transitions. [2022-11-18 18:26:41,131 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:26:41,131 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 116 transitions. [2022-11-18 18:26:41,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-18 18:26:41,132 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:26:41,132 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:26:41,147 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_264ad1cc-aa93-4253-9da2-8bfa37ae3af4/bin/uautomizer-TMbwUNV5ro/mathsat -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 [2022-11-18 18:26:41,344 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_264ad1cc-aa93-4253-9da2-8bfa37ae3af4/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:26:41,344 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting list_add_tailErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_sub_listErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_sub_listErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_sub_listErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-18 18:26:41,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:26:41,345 INFO L85 PathProgramCache]: Analyzing trace with hash -1334414076, now seen corresponding path program 1 times [2022-11-18 18:26:41,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:26:41,345 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1090262946] [2022-11-18 18:26:41,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:26:41,345 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:26:41,346 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_264ad1cc-aa93-4253-9da2-8bfa37ae3af4/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:26:41,347 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_264ad1cc-aa93-4253-9da2-8bfa37ae3af4/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:26:41,348 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_264ad1cc-aa93-4253-9da2-8bfa37ae3af4/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-11-18 18:26:41,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:26:41,581 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 28 conjunts are in the unsatisfiable core [2022-11-18 18:26:41,584 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:26:41,602 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-18 18:26:41,642 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-18 18:26:41,685 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-18 18:26:41,715 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-18 18:26:41,715 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-11-18 18:26:41,765 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-18 18:26:41,863 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-11-18 18:26:41,926 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:26:41,926 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:26:41,926 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:26:41,938 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1090262946] [2022-11-18 18:26:41,938 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1090262946] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:26:41,939 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:26:41,939 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-18 18:26:41,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544891430] [2022-11-18 18:26:41,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:26:41,939 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-18 18:26:41,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:26:41,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-18 18:26:41,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2022-11-18 18:26:41,940 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) [2022-11-18 18:26:43,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:26:43,121 INFO L93 Difference]: Finished difference Result 162 states and 177 transitions. [2022-11-18 18:26:43,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-18 18:26:43,123 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 1.7) internal successors, (17), 10 states have internal predecessors, (17), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-11-18 18:26:43,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:26:43,125 INFO L225 Difference]: With dead ends: 162 [2022-11-18 18:26:43,125 INFO L226 Difference]: Without dead ends: 162 [2022-11-18 18:26:43,126 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 [2022-11-18 18:26:43,127 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 83 mSDsluCounter, 311 mSDsCounter, 0 mSdLazyCounter, 414 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 356 SdHoareTripleChecker+Invalid, 428 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 414 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-18 18:26:43,127 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 356 Invalid, 428 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 414 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-18 18:26:43,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2022-11-18 18:26:43,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 128. [2022-11-18 18:26:43,134 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) [2022-11-18 18:26:43,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 144 transitions. [2022-11-18 18:26:43,135 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 144 transitions. Word has length 19 [2022-11-18 18:26:43,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:26:43,136 INFO L495 AbstractCegarLoop]: Abstraction has 128 states and 144 transitions. [2022-11-18 18:26:43,136 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 1.7) internal successors, (17), 10 states have internal predecessors, (17), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:26:43,136 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 144 transitions. [2022-11-18 18:26:43,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-18 18:26:43,137 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:26:43,137 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:26:43,158 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_264ad1cc-aa93-4253-9da2-8bfa37ae3af4/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2022-11-18 18:26:43,352 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_264ad1cc-aa93-4253-9da2-8bfa37ae3af4/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:26:43,352 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting list_add_tailErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_sub_listErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_sub_listErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_sub_listErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-18 18:26:43,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:26:43,353 INFO L85 PathProgramCache]: Analyzing trace with hash -1334414075, now seen corresponding path program 1 times [2022-11-18 18:26:43,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:26:43,353 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [342440755] [2022-11-18 18:26:43,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:26:43,354 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:26:43,354 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_264ad1cc-aa93-4253-9da2-8bfa37ae3af4/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:26:43,355 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_264ad1cc-aa93-4253-9da2-8bfa37ae3af4/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:26:43,401 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_264ad1cc-aa93-4253-9da2-8bfa37ae3af4/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2022-11-18 18:26:43,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:26:43,638 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 46 conjunts are in the unsatisfiable core [2022-11-18 18:26:43,643 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:26:43,653 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-18 18:26:43,662 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-18 18:26:43,765 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-18 18:26:43,774 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-18 18:26:43,828 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:26:43,829 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-18 18:26:43,858 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:26:43,859 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 21 treesize of output 20 [2022-11-18 18:26:43,922 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-18 18:26:43,923 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-11-18 18:26:43,937 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-18 18:26:44,017 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-18 18:26:44,030 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-18 18:26:44,187 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-18 18:26:44,192 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-18 18:26:44,281 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:26:44,281 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:26:44,281 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:26:44,281 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [342440755] [2022-11-18 18:26:44,281 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [342440755] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:26:44,282 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:26:44,282 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-18 18:26:44,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059591601] [2022-11-18 18:26:44,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:26:44,282 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-18 18:26:44,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:26:44,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-18 18:26:44,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2022-11-18 18:26:44,283 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) [2022-11-18 18:26:45,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:26:45,651 INFO L93 Difference]: Finished difference Result 131 states and 145 transitions. [2022-11-18 18:26:45,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-18 18:26:45,652 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 1.7) internal successors, (17), 10 states have internal predecessors, (17), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-11-18 18:26:45,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:26:45,654 INFO L225 Difference]: With dead ends: 131 [2022-11-18 18:26:45,654 INFO L226 Difference]: Without dead ends: 131 [2022-11-18 18:26:45,654 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=73, Invalid=307, Unknown=0, NotChecked=0, Total=380 [2022-11-18 18:26:45,655 INFO L413 NwaCegarLoop]: 66 mSDtfsCounter, 36 mSDsluCounter, 360 mSDsCounter, 0 mSdLazyCounter, 396 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 426 SdHoareTripleChecker+Invalid, 408 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 396 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-18 18:26:45,655 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 426 Invalid, 408 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 396 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-18 18:26:45,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2022-11-18 18:26:45,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 131. [2022-11-18 18:26:45,661 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) [2022-11-18 18:26:45,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 145 transitions. [2022-11-18 18:26:45,662 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 145 transitions. Word has length 19 [2022-11-18 18:26:45,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:26:45,662 INFO L495 AbstractCegarLoop]: Abstraction has 131 states and 145 transitions. [2022-11-18 18:26:45,662 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 1.7) internal successors, (17), 10 states have internal predecessors, (17), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:26:45,663 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 145 transitions. [2022-11-18 18:26:45,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-11-18 18:26:45,663 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:26:45,664 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:26:45,682 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_264ad1cc-aa93-4253-9da2-8bfa37ae3af4/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2022-11-18 18:26:45,864 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_264ad1cc-aa93-4253-9da2-8bfa37ae3af4/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:26:45,864 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting create_sub_listErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_sub_listErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_sub_listErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_sub_listErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-18 18:26:45,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:26:45,865 INFO L85 PathProgramCache]: Analyzing trace with hash -1965497160, now seen corresponding path program 1 times [2022-11-18 18:26:45,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:26:45,865 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [152279694] [2022-11-18 18:26:45,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:26:45,865 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:26:45,866 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_264ad1cc-aa93-4253-9da2-8bfa37ae3af4/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:26:45,867 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_264ad1cc-aa93-4253-9da2-8bfa37ae3af4/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:26:45,876 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_264ad1cc-aa93-4253-9da2-8bfa37ae3af4/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2022-11-18 18:26:46,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:26:46,125 INFO L263 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-18 18:26:46,128 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:26:46,135 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-18 18:26:46,141 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-18 18:26:46,222 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 [2022-11-18 18:26:46,247 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-18 18:26:46,295 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:26:46,296 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-18 18:26:46,306 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-18 18:26:46,306 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-11-18 18:26:46,384 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:26:46,385 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:26:46,856 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:26:46,856 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [152279694] [2022-11-18 18:26:46,856 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [152279694] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 18:26:46,857 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [376391476] [2022-11-18 18:26:46,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:26:46,857 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-18 18:26:46,857 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_264ad1cc-aa93-4253-9da2-8bfa37ae3af4/bin/uautomizer-TMbwUNV5ro/cvc4 [2022-11-18 18:26:46,858 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_264ad1cc-aa93-4253-9da2-8bfa37ae3af4/bin/uautomizer-TMbwUNV5ro/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-18 18:26:46,863 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_264ad1cc-aa93-4253-9da2-8bfa37ae3af4/bin/uautomizer-TMbwUNV5ro/cvc4 --incremental --print-success --lang smt (16)] Waiting until timeout for monitored process [2022-11-18 18:26:47,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:26:47,474 INFO L263 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 35 conjunts are in the unsatisfiable core [2022-11-18 18:26:47,481 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:26:47,490 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-18 18:26:47,498 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-18 18:26:47,733 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-18 18:26:48,128 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:26:48,129 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-18 18:26:48,145 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-18 18:26:48,148 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 13 treesize of output 13 [2022-11-18 18:26:48,172 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:26:48,172 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:26:49,110 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [376391476] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 18:26:49,110 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 18:26:49,110 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 12] total 13 [2022-11-18 18:26:49,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084446448] [2022-11-18 18:26:49,110 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 18:26:49,111 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-18 18:26:49,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:26:49,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-18 18:26:49,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=263, Unknown=3, NotChecked=32, Total=342 [2022-11-18 18:26:49,112 INFO L87 Difference]: Start difference. First operand 131 states and 145 transitions. Second operand has 14 states, 12 states have (on average 3.5) internal successors, (42), 12 states have internal predecessors, (42), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2022-11-18 18:26:54,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:26:54,249 INFO L93 Difference]: Finished difference Result 146 states and 164 transitions. [2022-11-18 18:26:54,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-18 18:26:54,250 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 3.5) internal successors, (42), 12 states have internal predecessors, (42), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 29 [2022-11-18 18:26:54,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:26:54,251 INFO L225 Difference]: With dead ends: 146 [2022-11-18 18:26:54,251 INFO L226 Difference]: Without dead ends: 146 [2022-11-18 18:26:54,251 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 49 SyntacticMatches, 2 SemanticMatches, 22 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=76, Invalid=429, Unknown=5, NotChecked=42, Total=552 [2022-11-18 18:26:54,252 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 61 mSDsluCounter, 345 mSDsCounter, 0 mSdLazyCounter, 262 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 398 SdHoareTripleChecker+Invalid, 448 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 262 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 179 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-18 18:26:54,252 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 398 Invalid, 448 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 262 Invalid, 0 Unknown, 179 Unchecked, 0.7s Time] [2022-11-18 18:26:54,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2022-11-18 18:26:54,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 139. [2022-11-18 18:26:54,256 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) [2022-11-18 18:26:54,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 155 transitions. [2022-11-18 18:26:54,257 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 155 transitions. Word has length 29 [2022-11-18 18:26:54,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:26:54,258 INFO L495 AbstractCegarLoop]: Abstraction has 139 states and 155 transitions. [2022-11-18 18:26:54,258 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 3.5) internal successors, (42), 12 states have internal predecessors, (42), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2022-11-18 18:26:54,258 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 155 transitions. [2022-11-18 18:26:54,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-18 18:26:54,259 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:26:54,259 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:26:54,271 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_264ad1cc-aa93-4253-9da2-8bfa37ae3af4/bin/uautomizer-TMbwUNV5ro/cvc4 --incremental --print-success --lang smt (16)] Forceful destruction successful, exit code 0 [2022-11-18 18:26:54,479 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_264ad1cc-aa93-4253-9da2-8bfa37ae3af4/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2022-11-18 18:26:54,660 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_264ad1cc-aa93-4253-9da2-8bfa37ae3af4/bin/uautomizer-TMbwUNV5ro/cvc4 --incremental --print-success --lang smt,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_264ad1cc-aa93-4253-9da2-8bfa37ae3af4/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:26:54,660 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting list_add_tailErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_sub_listErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_sub_listErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_sub_listErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-18 18:26:54,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:26:54,661 INFO L85 PathProgramCache]: Analyzing trace with hash 1572542800, now seen corresponding path program 1 times [2022-11-18 18:26:54,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:26:54,661 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1776062316] [2022-11-18 18:26:54,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:26:54,661 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:26:54,661 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_264ad1cc-aa93-4253-9da2-8bfa37ae3af4/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:26:54,662 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_264ad1cc-aa93-4253-9da2-8bfa37ae3af4/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:26:54,668 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_264ad1cc-aa93-4253-9da2-8bfa37ae3af4/bin/uautomizer-TMbwUNV5ro/mathsat -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)] Waiting until timeout for monitored process [2022-11-18 18:26:55,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:26:55,054 INFO L263 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 39 conjunts are in the unsatisfiable core [2022-11-18 18:26:55,057 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:26:55,793 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:26:55,794 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-18 18:26:55,809 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-18 18:26:55,810 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-11-18 18:26:56,064 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:26:56,065 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:27:00,278 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 60 treesize of output 54 [2022-11-18 18:27:00,385 INFO L321 Elim1Store]: treesize reduction 7, result has 77.4 percent of original size [2022-11-18 18:27:00,385 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 50 treesize of output 67 [2022-11-18 18:27:01,202 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-18 18:27:01,202 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 38 treesize of output 32 [2022-11-18 18:27:01,230 INFO L321 Elim1Store]: treesize reduction 7, result has 30.0 percent of original size [2022-11-18 18:27:01,230 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 14 [2022-11-18 18:27:01,914 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 18:27:01,914 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 38 treesize of output 40 [2022-11-18 18:27:02,070 INFO L321 Elim1Store]: treesize reduction 7, result has 30.0 percent of original size [2022-11-18 18:27:02,070 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 14 [2022-11-18 18:27:02,420 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:27:02,421 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:27:02,421 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1776062316] [2022-11-18 18:27:02,421 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1776062316] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:27:02,421 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 18:27:02,421 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15] total 30 [2022-11-18 18:27:02,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282883187] [2022-11-18 18:27:02,421 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 18:27:02,422 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-11-18 18:27:02,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:27:02,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-11-18 18:27:02,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=844, Unknown=0, NotChecked=0, Total=930 [2022-11-18 18:27:02,423 INFO L87 Difference]: Start difference. First operand 139 states and 155 transitions. Second operand has 31 states, 28 states have (on average 2.0714285714285716) internal successors, (58), 25 states have internal predecessors, (58), 8 states have call successors, (8), 5 states have call predecessors, (8), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-18 18:27:07,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:27:07,738 INFO L93 Difference]: Finished difference Result 168 states and 180 transitions. [2022-11-18 18:27:07,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-18 18:27:07,739 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 28 states have (on average 2.0714285714285716) internal successors, (58), 25 states have internal predecessors, (58), 8 states have call successors, (8), 5 states have call predecessors, (8), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 36 [2022-11-18 18:27:07,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:27:07,740 INFO L225 Difference]: With dead ends: 168 [2022-11-18 18:27:07,740 INFO L226 Difference]: Without dead ends: 168 [2022-11-18 18:27:07,741 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 42 SyntacticMatches, 3 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 260 ImplicationChecksByTransitivity, 7.3s TimeCoverageRelationStatistics Valid=231, Invalid=1575, Unknown=0, NotChecked=0, Total=1806 [2022-11-18 18:27:07,741 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 305 mSDsluCounter, 539 mSDsCounter, 0 mSdLazyCounter, 747 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 306 SdHoareTripleChecker+Valid, 586 SdHoareTripleChecker+Invalid, 1124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 747 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 348 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-11-18 18:27:07,741 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [306 Valid, 586 Invalid, 1124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 747 Invalid, 0 Unknown, 348 Unchecked, 3.1s Time] [2022-11-18 18:27:07,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2022-11-18 18:27:07,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 136. [2022-11-18 18:27:07,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 98 states have (on average 1.336734693877551) internal successors, (131), 120 states have internal predecessors, (131), 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) [2022-11-18 18:27:07,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 148 transitions. [2022-11-18 18:27:07,752 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 148 transitions. Word has length 36 [2022-11-18 18:27:07,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:27:07,753 INFO L495 AbstractCegarLoop]: Abstraction has 136 states and 148 transitions. [2022-11-18 18:27:07,753 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 28 states have (on average 2.0714285714285716) internal successors, (58), 25 states have internal predecessors, (58), 8 states have call successors, (8), 5 states have call predecessors, (8), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-18 18:27:07,753 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 148 transitions. [2022-11-18 18:27:07,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-11-18 18:27:07,757 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:27:07,757 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:27:07,778 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_264ad1cc-aa93-4253-9da2-8bfa37ae3af4/bin/uautomizer-TMbwUNV5ro/mathsat -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)] Forceful destruction successful, exit code 0 [2022-11-18 18:27:07,973 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_264ad1cc-aa93-4253-9da2-8bfa37ae3af4/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:27:07,973 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting list_add_tailErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_sub_listErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_sub_listErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_sub_listErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-18 18:27:07,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:27:07,973 INFO L85 PathProgramCache]: Analyzing trace with hash 1746009876, now seen corresponding path program 1 times [2022-11-18 18:27:07,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:27:07,974 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [28865031] [2022-11-18 18:27:07,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:27:07,974 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:27:07,974 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_264ad1cc-aa93-4253-9da2-8bfa37ae3af4/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:27:07,975 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_264ad1cc-aa93-4253-9da2-8bfa37ae3af4/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:27:07,977 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_264ad1cc-aa93-4253-9da2-8bfa37ae3af4/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2022-11-18 18:27:08,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:27:08,498 INFO L263 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 76 conjunts are in the unsatisfiable core [2022-11-18 18:27:08,504 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:27:08,514 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-18 18:27:08,606 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-18 18:27:08,623 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-18 18:27:08,681 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:27:08,682 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-18 18:27:08,698 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:27:08,700 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 21 treesize of output 20 [2022-11-18 18:27:08,758 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-18 18:27:08,759 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2022-11-18 18:27:08,914 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-18 18:27:08,944 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-18 18:27:08,967 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-18 18:27:08,975 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-18 18:27:10,319 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 65 treesize of output 36 [2022-11-18 18:27:10,372 INFO L321 Elim1Store]: treesize reduction 46, result has 19.3 percent of original size [2022-11-18 18:27:10,373 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 96 treesize of output 128 [2022-11-18 18:27:10,380 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 132 treesize of output 96 [2022-11-18 18:27:10,390 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 24 [2022-11-18 18:27:10,408 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 87 treesize of output 30 [2022-11-18 18:27:10,641 INFO L321 Elim1Store]: treesize reduction 56, result has 35.6 percent of original size [2022-11-18 18:27:10,642 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 30 treesize of output 51 [2022-11-18 18:27:10,829 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 32 [2022-11-18 18:27:11,300 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 19 [2022-11-18 18:27:11,713 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:27:11,713 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:27:12,313 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_713 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| |c_create_sub_list_insert_sub_~sub~0#1.base| v_ArrVal_713) |c_create_sub_list_insert_sub_~head#1.base|) (bvadd (_ bv4 32) |c_create_sub_list_insert_sub_~head#1.offset|))) (_ bv1 1)))) is different from false [2022-11-18 18:27:14,323 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:27:14,324 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [28865031] [2022-11-18 18:27:14,324 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [28865031] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 18:27:14,324 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [23481133] [2022-11-18 18:27:14,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:27:14,324 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-18 18:27:14,324 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_264ad1cc-aa93-4253-9da2-8bfa37ae3af4/bin/uautomizer-TMbwUNV5ro/cvc4 [2022-11-18 18:27:14,325 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_264ad1cc-aa93-4253-9da2-8bfa37ae3af4/bin/uautomizer-TMbwUNV5ro/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-18 18:27:14,326 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_264ad1cc-aa93-4253-9da2-8bfa37ae3af4/bin/uautomizer-TMbwUNV5ro/cvc4 --incremental --print-success --lang smt (19)] Waiting until timeout for monitored process [2022-11-18 18:27:15,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:27:15,175 INFO L263 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 79 conjunts are in the unsatisfiable core [2022-11-18 18:27:15,180 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:27:15,189 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-18 18:27:15,229 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-18 18:27:15,239 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-18 18:27:15,260 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:27:15,261 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 21 treesize of output 20 [2022-11-18 18:27:15,277 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:27:15,278 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-18 18:27:15,329 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-18 18:27:15,329 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2022-11-18 18:27:15,432 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-18 18:27:15,465 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-18 18:27:15,488 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-18 18:27:15,497 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-18 18:27:16,461 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 0 case distinctions, treesize of input 65 treesize of output 36 [2022-11-18 18:27:16,533 INFO L321 Elim1Store]: treesize reduction 46, result has 19.3 percent of original size [2022-11-18 18:27:16,534 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 96 treesize of output 128 [2022-11-18 18:27:16,545 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 26 [2022-11-18 18:27:16,553 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:27:16,554 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 120 treesize of output 84 [2022-11-18 18:27:16,568 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 [2022-11-18 18:27:16,717 INFO L321 Elim1Store]: treesize reduction 56, result has 35.6 percent of original size [2022-11-18 18:27:16,717 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 30 treesize of output 51 [2022-11-18 18:27:16,952 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 32 [2022-11-18 18:27:17,384 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2022-11-18 18:27:17,723 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:27:17,723 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:27:22,808 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [23481133] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 18:27:22,808 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 18:27:22,808 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 27 [2022-11-18 18:27:22,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514474242] [2022-11-18 18:27:22,809 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 18:27:22,809 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-11-18 18:27:22,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:27:22,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-11-18 18:27:22,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=1252, Unknown=43, NotChecked=72, Total=1482 [2022-11-18 18:27:22,811 INFO L87 Difference]: Start difference. First operand 136 states and 148 transitions. Second operand has 28 states, 25 states have (on average 1.64) internal successors, (41), 24 states have internal predecessors, (41), 4 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-18 18:27:24,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:27:24,352 INFO L93 Difference]: Finished difference Result 147 states and 161 transitions. [2022-11-18 18:27:24,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-18 18:27:24,353 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 25 states have (on average 1.64) internal successors, (41), 24 states have internal predecessors, (41), 4 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 35 [2022-11-18 18:27:24,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:27:24,354 INFO L225 Difference]: With dead ends: 147 [2022-11-18 18:27:24,354 INFO L226 Difference]: Without dead ends: 147 [2022-11-18 18:27:24,355 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 56 SyntacticMatches, 4 SemanticMatches, 43 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 376 ImplicationChecksByTransitivity, 8.7s TimeCoverageRelationStatistics Valid=168, Invalid=1684, Unknown=44, NotChecked=84, Total=1980 [2022-11-18 18:27:24,356 INFO L413 NwaCegarLoop]: 67 mSDtfsCounter, 28 mSDsluCounter, 661 mSDsCounter, 0 mSdLazyCounter, 272 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 728 SdHoareTripleChecker+Invalid, 734 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 272 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 452 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-18 18:27:24,356 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 728 Invalid, 734 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 272 Invalid, 0 Unknown, 452 Unchecked, 0.8s Time] [2022-11-18 18:27:24,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2022-11-18 18:27:24,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 147. [2022-11-18 18:27:24,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 108 states have (on average 1.3148148148148149) internal successors, (142), 130 states have internal predecessors, (142), 9 states have call successors, (9), 9 states have call predecessors, (9), 7 states have return successors, (10), 7 states have call predecessors, (10), 9 states have call successors, (10) [2022-11-18 18:27:24,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 161 transitions. [2022-11-18 18:27:24,363 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 161 transitions. Word has length 35 [2022-11-18 18:27:24,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:27:24,363 INFO L495 AbstractCegarLoop]: Abstraction has 147 states and 161 transitions. [2022-11-18 18:27:24,363 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 25 states have (on average 1.64) internal successors, (41), 24 states have internal predecessors, (41), 4 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-18 18:27:24,363 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 161 transitions. [2022-11-18 18:27:24,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-11-18 18:27:24,364 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:27:24,365 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:27:24,381 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_264ad1cc-aa93-4253-9da2-8bfa37ae3af4/bin/uautomizer-TMbwUNV5ro/cvc4 --incremental --print-success --lang smt (19)] Forceful destruction successful, exit code 0 [2022-11-18 18:27:24,598 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_264ad1cc-aa93-4253-9da2-8bfa37ae3af4/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2022-11-18 18:27:24,790 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_264ad1cc-aa93-4253-9da2-8bfa37ae3af4/bin/uautomizer-TMbwUNV5ro/cvc4 --incremental --print-success --lang smt,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_264ad1cc-aa93-4253-9da2-8bfa37ae3af4/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:27:24,791 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting list_add_tailErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_sub_listErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_sub_listErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_sub_listErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-18 18:27:24,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:27:24,791 INFO L85 PathProgramCache]: Analyzing trace with hash 1746009877, now seen corresponding path program 1 times [2022-11-18 18:27:24,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:27:24,792 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [981399436] [2022-11-18 18:27:24,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:27:24,792 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:27:24,792 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_264ad1cc-aa93-4253-9da2-8bfa37ae3af4/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:27:24,793 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_264ad1cc-aa93-4253-9da2-8bfa37ae3af4/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:27:24,799 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_264ad1cc-aa93-4253-9da2-8bfa37ae3af4/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2022-11-18 18:27:25,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:27:25,345 INFO L263 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 95 conjunts are in the unsatisfiable core [2022-11-18 18:27:25,357 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:27:25,372 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-18 18:27:25,454 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-18 18:27:25,462 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-18 18:27:25,513 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:27:25,514 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-18 18:27:25,524 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:27:25,525 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-18 18:27:25,594 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-18 18:27:25,595 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2022-11-18 18:27:25,620 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-18 18:27:25,768 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-18 18:27:25,792 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-18 18:27:25,837 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-18 18:27:25,846 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-18 18:27:27,999 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 120 treesize of output 79 [2022-11-18 18:27:28,183 INFO L321 Elim1Store]: treesize reduction 46, result has 19.3 percent of original size [2022-11-18 18:27:28,184 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 [2022-11-18 18:27:28,196 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 95 treesize of output 60 [2022-11-18 18:27:28,206 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:27:28,207 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 154 treesize of output 106 [2022-11-18 18:27:28,218 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:27:28,225 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 27 [2022-11-18 18:27:28,232 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:27:28,233 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 20 [2022-11-18 18:27:28,676 INFO L321 Elim1Store]: treesize reduction 12, result has 52.0 percent of original size [2022-11-18 18:27:28,677 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 24 treesize of output 26 [2022-11-18 18:27:28,700 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-18 18:27:28,927 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-18 18:27:28,965 INFO L321 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-11-18 18:27:28,965 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 [2022-11-18 18:27:29,429 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2022-11-18 18:27:29,441 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-18 18:27:29,682 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:27:29,682 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:27:30,971 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv4 32) |c_create_sub_list_insert_sub_~head#1.offset|))) (and (forall ((v_ArrVal_965 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.offset| |c_create_sub_list_insert_sub_~sub~0#1.base| v_ArrVal_965) |c_create_sub_list_insert_sub_~head#1.base|) .cse1))) (bvule .cse0 (bvadd .cse0 (_ bv4 32))))) (forall ((v_ArrVal_964 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_965 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| |c_create_sub_list_insert_sub_~sub~0#1.base| v_ArrVal_965) |c_create_sub_list_insert_sub_~head#1.base|) .cse1) (_ bv4 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_create_sub_list_insert_sub_~sub~0#1.base| v_ArrVal_964) |c_create_sub_list_insert_sub_~head#1.base|) .cse1)))))) is different from false [2022-11-18 18:27:45,824 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:27:45,824 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [981399436] [2022-11-18 18:27:45,824 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [981399436] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 18:27:45,824 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1925440855] [2022-11-18 18:27:45,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:27:45,824 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-18 18:27:45,825 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_264ad1cc-aa93-4253-9da2-8bfa37ae3af4/bin/uautomizer-TMbwUNV5ro/cvc4 [2022-11-18 18:27:45,826 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_264ad1cc-aa93-4253-9da2-8bfa37ae3af4/bin/uautomizer-TMbwUNV5ro/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-18 18:27:45,828 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_264ad1cc-aa93-4253-9da2-8bfa37ae3af4/bin/uautomizer-TMbwUNV5ro/cvc4 --incremental --print-success --lang smt (21)] Waiting until timeout for monitored process [2022-11-18 18:27:47,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:27:47,326 INFO L263 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 100 conjunts are in the unsatisfiable core [2022-11-18 18:27:47,333 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:27:47,340 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-18 18:27:47,377 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-18 18:27:47,388 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-18 18:27:47,400 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:27:47,401 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-18 18:27:47,417 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:27:47,418 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-18 18:27:47,435 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-18 18:27:47,484 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-18 18:27:47,484 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2022-11-18 18:27:47,601 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-18 18:27:47,638 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-18 18:27:47,661 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-18 18:27:47,667 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-18 18:27:53,043 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 133 treesize of output 86 [2022-11-18 18:27:53,055 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 100 treesize of output 71 [2022-11-18 18:27:53,157 INFO L321 Elim1Store]: treesize reduction 34, result has 24.4 percent of original size [2022-11-18 18:27:53,158 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 124 treesize of output 150 [2022-11-18 18:27:53,169 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:27:53,170 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 154 treesize of output 106 [2022-11-18 18:27:53,180 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:27:53,186 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 27 [2022-11-18 18:27:53,194 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:27:53,194 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 20 [2022-11-18 18:27:53,922 INFO L321 Elim1Store]: treesize reduction 12, result has 52.0 percent of original size [2022-11-18 18:27:53,923 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 24 treesize of output 26 [2022-11-18 18:27:53,948 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-18 18:27:54,450 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-18 18:27:54,480 INFO L321 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-11-18 18:27:54,480 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 [2022-11-18 18:27:54,534 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2022-11-18 18:27:54,544 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-18 18:27:54,922 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:27:54,922 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:27:55,073 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse0 (bvadd (_ bv4 32) |c_create_sub_list_insert_sub_~head#1.offset|))) (and (forall ((v_ArrVal_1104 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1105 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv4 32) (select (select (store |c_#memory_$Pointer$.offset| |c_create_sub_list_insert_sub_~sub~0#1.base| v_ArrVal_1104) |c_create_sub_list_insert_sub_~head#1.base|) .cse0)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_create_sub_list_insert_sub_~sub~0#1.base| v_ArrVal_1105) |c_create_sub_list_insert_sub_~head#1.base|) .cse0)))) (forall ((v_ArrVal_1104 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (select (select (store |c_#memory_$Pointer$.offset| |c_create_sub_list_insert_sub_~sub~0#1.base| v_ArrVal_1104) |c_create_sub_list_insert_sub_~head#1.base|) .cse0))) (bvule .cse1 (bvadd (_ bv4 32) .cse1)))))) is different from false [2022-11-18 18:28:11,122 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1925440855] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 18:28:11,122 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 18:28:11,122 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 30 [2022-11-18 18:28:11,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990673065] [2022-11-18 18:28:11,123 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 18:28:11,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-11-18 18:28:11,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:28:11,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-11-18 18:28:11,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=1419, Unknown=31, NotChecked=154, Total=1722 [2022-11-18 18:28:11,125 INFO L87 Difference]: Start difference. First operand 147 states and 161 transitions. Second operand has 31 states, 29 states have (on average 1.5862068965517242) internal successors, (46), 28 states have internal predecessors, (46), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-18 18:28:22,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:28:22,127 INFO L93 Difference]: Finished difference Result 150 states and 162 transitions. [2022-11-18 18:28:22,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-18 18:28:22,132 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 29 states have (on average 1.5862068965517242) internal successors, (46), 28 states have internal predecessors, (46), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 35 [2022-11-18 18:28:22,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:28:22,135 INFO L225 Difference]: With dead ends: 150 [2022-11-18 18:28:22,135 INFO L226 Difference]: Without dead ends: 150 [2022-11-18 18:28:22,136 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 56 SyntacticMatches, 1 SemanticMatches, 50 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 518 ImplicationChecksByTransitivity, 33.8s TimeCoverageRelationStatistics Valid=192, Invalid=2231, Unknown=35, NotChecked=194, Total=2652 [2022-11-18 18:28:22,138 INFO L413 NwaCegarLoop]: 68 mSDtfsCounter, 34 mSDsluCounter, 665 mSDsCounter, 0 mSdLazyCounter, 373 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 733 SdHoareTripleChecker+Invalid, 766 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 373 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 390 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-18 18:28:22,138 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 733 Invalid, 766 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 373 Invalid, 0 Unknown, 390 Unchecked, 1.1s Time] [2022-11-18 18:28:22,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2022-11-18 18:28:22,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 150. [2022-11-18 18:28:22,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 110 states have (on average 1.3) internal successors, (143), 133 states have internal predecessors, (143), 9 states have call successors, (9), 9 states have call predecessors, (9), 8 states have return successors, (10), 7 states have call predecessors, (10), 9 states have call successors, (10) [2022-11-18 18:28:22,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 162 transitions. [2022-11-18 18:28:22,147 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 162 transitions. Word has length 35 [2022-11-18 18:28:22,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:28:22,149 INFO L495 AbstractCegarLoop]: Abstraction has 150 states and 162 transitions. [2022-11-18 18:28:22,149 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 29 states have (on average 1.5862068965517242) internal successors, (46), 28 states have internal predecessors, (46), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-18 18:28:22,149 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 162 transitions. [2022-11-18 18:28:22,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-11-18 18:28:22,154 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:28:22,155 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:28:22,161 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_264ad1cc-aa93-4253-9da2-8bfa37ae3af4/bin/uautomizer-TMbwUNV5ro/cvc4 --incremental --print-success --lang smt (21)] Forceful destruction successful, exit code 0 [2022-11-18 18:28:22,369 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_264ad1cc-aa93-4253-9da2-8bfa37ae3af4/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2022-11-18 18:28:22,559 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_264ad1cc-aa93-4253-9da2-8bfa37ae3af4/bin/uautomizer-TMbwUNV5ro/cvc4 --incremental --print-success --lang smt,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_264ad1cc-aa93-4253-9da2-8bfa37ae3af4/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:28:22,559 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting list_add_tailErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_sub_listErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_sub_listErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_sub_listErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-18 18:28:22,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:28:22,560 INFO L85 PathProgramCache]: Analyzing trace with hash 879107445, now seen corresponding path program 1 times [2022-11-18 18:28:22,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:28:22,560 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1420943611] [2022-11-18 18:28:22,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:28:22,560 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:28:22,560 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_264ad1cc-aa93-4253-9da2-8bfa37ae3af4/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:28:22,561 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_264ad1cc-aa93-4253-9da2-8bfa37ae3af4/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:28:22,564 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_264ad1cc-aa93-4253-9da2-8bfa37ae3af4/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2022-11-18 18:28:23,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:28:23,061 INFO L263 TraceCheckSpWp]: Trace formula consists of 356 conjuncts, 47 conjunts are in the unsatisfiable core [2022-11-18 18:28:23,064 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:28:23,337 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-18 18:28:23,349 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-18 18:28:23,421 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:28:23,422 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 21 treesize of output 20 [2022-11-18 18:28:23,439 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:28:23,440 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-18 18:28:23,476 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-18 18:28:23,477 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-11-18 18:28:23,587 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-18 18:28:23,597 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-18 18:28:23,813 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-18 18:28:23,824 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-18 18:28:23,998 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:28:23,999 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:28:24,314 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 18:28:24,314 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 46 treesize of output 50 [2022-11-18 18:28:24,990 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse0 (bvadd (_ bv4 32) |c_create_sub_list_insert_sub_~head#1.offset|))) (and (forall ((v_ArrVal_1240 (Array (_ BitVec 32) (_ BitVec 32)))) (= (select (select (store |c_#memory_$Pointer$.base| |c_create_sub_list_insert_sub_~sub~0#1.base| v_ArrVal_1240) |c_create_sub_list_insert_sub_~head#1.base|) .cse0) |c_create_sub_list_insert_sub_~head#1.base|)) (forall ((v_ArrVal_1241 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv4 32) (select (select (store |c_#memory_$Pointer$.offset| |c_create_sub_list_insert_sub_~sub~0#1.base| v_ArrVal_1241) |c_create_sub_list_insert_sub_~head#1.base|) .cse0)) (bvadd (_ bv8 32) |c_create_sub_list_insert_sub_~head#1.offset|))) (forall ((v_ArrVal_1241 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (select (select (store |c_#memory_$Pointer$.offset| |c_create_sub_list_insert_sub_~sub~0#1.base| v_ArrVal_1241) |c_create_sub_list_insert_sub_~head#1.base|) .cse0))) (bvule .cse1 (bvadd (_ bv4 32) .cse1)))))) is different from false [2022-11-18 18:28:32,215 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 18:28:32,216 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 49 treesize of output 42 [2022-11-18 18:28:32,222 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 32 [2022-11-18 18:28:32,236 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2022-11-18 18:28:32,265 INFO L321 Elim1Store]: treesize reduction 18, result has 5.3 percent of original size [2022-11-18 18:28:32,265 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 [2022-11-18 18:28:32,292 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 18:28:32,292 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 29 treesize of output 35 [2022-11-18 18:28:32,305 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 18:28:32,308 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2022-11-18 18:28:33,493 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 18:28:33,493 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 38 treesize of output 62 [2022-11-18 18:28:33,843 INFO L321 Elim1Store]: treesize reduction 7, result has 30.0 percent of original size [2022-11-18 18:28:33,843 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 15 [2022-11-18 18:28:33,892 INFO L321 Elim1Store]: treesize reduction 7, result has 30.0 percent of original size [2022-11-18 18:28:33,893 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 15 [2022-11-18 18:28:33,926 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2022-11-18 18:28:33,926 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:28:33,926 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1420943611] [2022-11-18 18:28:33,926 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1420943611] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:28:33,926 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 18:28:33,926 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 18] total 29 [2022-11-18 18:28:33,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669115141] [2022-11-18 18:28:33,927 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 18:28:33,927 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-11-18 18:28:33,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:28:33,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-11-18 18:28:33,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=730, Unknown=10, NotChecked=54, Total=870 [2022-11-18 18:28:33,928 INFO L87 Difference]: Start difference. First operand 150 states and 162 transitions. Second operand has 30 states, 25 states have (on average 2.0) internal successors, (50), 24 states have internal predecessors, (50), 7 states have call successors, (7), 5 states have call predecessors, (7), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-18 18:28:38,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:28:38,546 INFO L93 Difference]: Finished difference Result 182 states and 194 transitions. [2022-11-18 18:28:38,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-18 18:28:38,547 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 25 states have (on average 2.0) internal successors, (50), 24 states have internal predecessors, (50), 7 states have call successors, (7), 5 states have call predecessors, (7), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 41 [2022-11-18 18:28:38,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:28:38,548 INFO L225 Difference]: With dead ends: 182 [2022-11-18 18:28:38,548 INFO L226 Difference]: Without dead ends: 182 [2022-11-18 18:28:38,549 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 52 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 238 ImplicationChecksByTransitivity, 11.5s TimeCoverageRelationStatistics Valid=204, Invalid=1595, Unknown=11, NotChecked=82, Total=1892 [2022-11-18 18:28:38,550 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 282 mSDsluCounter, 638 mSDsCounter, 0 mSdLazyCounter, 677 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 284 SdHoareTripleChecker+Valid, 685 SdHoareTripleChecker+Invalid, 1094 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 677 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 400 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-11-18 18:28:38,550 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [284 Valid, 685 Invalid, 1094 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 677 Invalid, 0 Unknown, 400 Unchecked, 2.7s Time] [2022-11-18 18:28:38,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2022-11-18 18:28:38,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 153. [2022-11-18 18:28:38,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 112 states have (on average 1.2857142857142858) internal successors, (144), 136 states have internal predecessors, (144), 9 states have call successors, (9), 9 states have call predecessors, (9), 9 states have return successors, (10), 7 states have call predecessors, (10), 9 states have call successors, (10) [2022-11-18 18:28:38,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 163 transitions. [2022-11-18 18:28:38,557 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 163 transitions. Word has length 41 [2022-11-18 18:28:38,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:28:38,557 INFO L495 AbstractCegarLoop]: Abstraction has 153 states and 163 transitions. [2022-11-18 18:28:38,557 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 25 states have (on average 2.0) internal successors, (50), 24 states have internal predecessors, (50), 7 states have call successors, (7), 5 states have call predecessors, (7), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-18 18:28:38,557 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 163 transitions. [2022-11-18 18:28:38,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-11-18 18:28:38,558 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:28:38,558 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:28:38,572 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_264ad1cc-aa93-4253-9da2-8bfa37ae3af4/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2022-11-18 18:28:38,763 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_264ad1cc-aa93-4253-9da2-8bfa37ae3af4/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:28:38,763 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting create_sub_listErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_sub_listErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_sub_listErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_sub_listErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-18 18:28:38,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:28:38,763 INFO L85 PathProgramCache]: Analyzing trace with hash 1398479560, now seen corresponding path program 1 times [2022-11-18 18:28:38,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:28:38,764 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [86761623] [2022-11-18 18:28:38,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:28:38,764 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:28:38,764 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_264ad1cc-aa93-4253-9da2-8bfa37ae3af4/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:28:38,765 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_264ad1cc-aa93-4253-9da2-8bfa37ae3af4/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:28:38,766 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_264ad1cc-aa93-4253-9da2-8bfa37ae3af4/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2022-11-18 18:28:39,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:28:39,148 INFO L263 TraceCheckSpWp]: Trace formula consists of 348 conjuncts, 29 conjunts are in the unsatisfiable core [2022-11-18 18:28:39,150 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:28:39,155 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-18 18:28:39,162 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-18 18:28:39,353 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-18 18:28:39,569 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-18 18:28:39,570 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-11-18 18:28:39,594 WARN L859 $PredicateComparison]: unable to prove that (exists ((|v_create_sub_list_insert_sub_~sub~0#1.base_38| (_ BitVec 32)) (|create_sub_list_insert_sub_~sub~0#1.base| (_ BitVec 32)) (v_ArrVal_1343 (_ BitVec 32)) (v_ArrVal_1342 (_ BitVec 32))) (and (= (_ bv0 1) (select |c_old(#valid)| |v_create_sub_list_insert_sub_~sub~0#1.base_38|)) (= (store (store |c_old(#length)| |v_create_sub_list_insert_sub_~sub~0#1.base_38| v_ArrVal_1342) |create_sub_list_insert_sub_~sub~0#1.base| v_ArrVal_1343) |c_#length|) (not (= |c_create_sub_list_#in~sub#1.base| |create_sub_list_insert_sub_~sub~0#1.base|)))) is different from true [2022-11-18 18:28:39,684 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-18 18:28:39,684 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 15 [2022-11-18 18:28:39,691 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-18 18:28:39,807 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:28:39,846 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-18 18:28:39,846 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 23 [2022-11-18 18:28:39,876 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-18 18:28:39,877 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-11-18 18:28:40,022 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 5 not checked. [2022-11-18 18:28:40,022 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:28:40,648 INFO L321 Elim1Store]: treesize reduction 7, result has 30.0 percent of original size [2022-11-18 18:28:40,649 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 14 [2022-11-18 18:28:42,979 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:28:42,979 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [86761623] [2022-11-18 18:28:42,979 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [86761623] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 18:28:42,979 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [765494337] [2022-11-18 18:28:42,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:28:42,979 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-18 18:28:42,979 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_264ad1cc-aa93-4253-9da2-8bfa37ae3af4/bin/uautomizer-TMbwUNV5ro/cvc4 [2022-11-18 18:28:42,980 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_264ad1cc-aa93-4253-9da2-8bfa37ae3af4/bin/uautomizer-TMbwUNV5ro/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-18 18:28:42,982 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_264ad1cc-aa93-4253-9da2-8bfa37ae3af4/bin/uautomizer-TMbwUNV5ro/cvc4 --incremental --print-success --lang smt (24)] Waiting until timeout for monitored process [2022-11-18 18:28:43,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:28:43,792 INFO L263 TraceCheckSpWp]: Trace formula consists of 348 conjuncts, 44 conjunts are in the unsatisfiable core [2022-11-18 18:28:43,795 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:28:43,813 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-18 18:28:43,822 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-18 18:28:44,173 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-18 18:28:44,431 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-18 18:28:44,431 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-11-18 18:28:44,691 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-18 18:28:44,692 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 15 [2022-11-18 18:28:44,698 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-18 18:28:45,345 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:28:45,379 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-18 18:28:45,379 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 23 [2022-11-18 18:28:45,403 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-18 18:28:45,403 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-11-18 18:28:45,430 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 1 proven. 16 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 18:28:45,431 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:28:46,427 INFO L321 Elim1Store]: treesize reduction 7, result has 30.0 percent of original size [2022-11-18 18:28:46,428 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 14 [2022-11-18 18:28:51,128 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [765494337] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 18:28:51,128 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 18:28:51,128 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 17] total 21 [2022-11-18 18:28:51,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619335144] [2022-11-18 18:28:51,128 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 18:28:51,129 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-18 18:28:51,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:28:51,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-18 18:28:51,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=581, Unknown=7, NotChecked=48, Total=702 [2022-11-18 18:28:51,130 INFO L87 Difference]: Start difference. First operand 153 states and 163 transitions. Second operand has 22 states, 20 states have (on average 3.05) internal successors, (61), 19 states have internal predecessors, (61), 6 states have call successors, (6), 3 states have call predecessors, (6), 5 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2022-11-18 18:28:56,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:28:56,709 INFO L93 Difference]: Finished difference Result 176 states and 195 transitions. [2022-11-18 18:28:56,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-18 18:28:56,710 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 20 states have (on average 3.05) internal successors, (61), 19 states have internal predecessors, (61), 6 states have call successors, (6), 3 states have call predecessors, (6), 5 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) Word has length 45 [2022-11-18 18:28:56,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:28:56,712 INFO L225 Difference]: With dead ends: 176 [2022-11-18 18:28:56,712 INFO L226 Difference]: Without dead ends: 176 [2022-11-18 18:28:56,713 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 73 SyntacticMatches, 2 SemanticMatches, 30 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 173 ImplicationChecksByTransitivity, 12.8s TimeCoverageRelationStatistics Valid=106, Invalid=819, Unknown=9, NotChecked=58, Total=992 [2022-11-18 18:28:56,714 INFO L413 NwaCegarLoop]: 60 mSDtfsCounter, 94 mSDsluCounter, 564 mSDsCounter, 0 mSdLazyCounter, 313 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 624 SdHoareTripleChecker+Invalid, 620 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 313 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 301 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-18 18:28:56,714 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 624 Invalid, 620 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 313 Invalid, 0 Unknown, 301 Unchecked, 0.9s Time] [2022-11-18 18:28:56,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2022-11-18 18:28:56,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 155. [2022-11-18 18:28:56,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 114 states have (on average 1.2894736842105263) internal successors, (147), 137 states have internal predecessors, (147), 9 states have call successors, (9), 9 states have call predecessors, (9), 9 states have return successors, (10), 8 states have call predecessors, (10), 9 states have call successors, (10) [2022-11-18 18:28:56,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 166 transitions. [2022-11-18 18:28:56,722 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 166 transitions. Word has length 45 [2022-11-18 18:28:56,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:28:56,722 INFO L495 AbstractCegarLoop]: Abstraction has 155 states and 166 transitions. [2022-11-18 18:28:56,722 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 20 states have (on average 3.05) internal successors, (61), 19 states have internal predecessors, (61), 6 states have call successors, (6), 3 states have call predecessors, (6), 5 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2022-11-18 18:28:56,723 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 166 transitions. [2022-11-18 18:28:56,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-11-18 18:28:56,723 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:28:56,724 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:28:56,732 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_264ad1cc-aa93-4253-9da2-8bfa37ae3af4/bin/uautomizer-TMbwUNV5ro/cvc4 --incremental --print-success --lang smt (24)] Forceful destruction successful, exit code 0 [2022-11-18 18:28:56,943 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_264ad1cc-aa93-4253-9da2-8bfa37ae3af4/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2022-11-18 18:28:57,132 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_264ad1cc-aa93-4253-9da2-8bfa37ae3af4/bin/uautomizer-TMbwUNV5ro/cvc4 --incremental --print-success --lang smt,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_264ad1cc-aa93-4253-9da2-8bfa37ae3af4/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:28:57,132 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting list_add_tailErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_sub_listErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_sub_listErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_sub_listErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-18 18:28:57,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:28:57,133 INFO L85 PathProgramCache]: Analyzing trace with hash 1768276039, now seen corresponding path program 1 times [2022-11-18 18:28:57,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:28:57,133 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [195853924] [2022-11-18 18:28:57,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:28:57,133 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:28:57,133 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_264ad1cc-aa93-4253-9da2-8bfa37ae3af4/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:28:57,134 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_264ad1cc-aa93-4253-9da2-8bfa37ae3af4/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:28:57,137 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_264ad1cc-aa93-4253-9da2-8bfa37ae3af4/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2022-11-18 18:28:57,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:28:57,650 INFO L263 TraceCheckSpWp]: Trace formula consists of 390 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-18 18:28:57,653 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:28:57,666 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-18 18:28:57,746 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-18 18:28:57,747 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2022-11-18 18:28:57,808 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2022-11-18 18:28:57,970 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-18 18:28:58,111 WARN L859 $PredicateComparison]: unable to prove that (and (not (= |c_#StackHeapBarrier| (_ bv0 32))) (exists ((v_ArrVal_1570 (_ BitVec 1)) (|create_sub_list_insert_sub_~sub~0#1.base| (_ BitVec 32))) (and (= |c_#valid| (store |c_old(#valid)| |create_sub_list_insert_sub_~sub~0#1.base| v_ArrVal_1570)) (bvult |create_sub_list_insert_sub_~sub~0#1.base| |c_#StackHeapBarrier|))) (not (= (bvadd |c_#StackHeapBarrier| (_ bv1 32)) (_ bv0 32)))) is different from true [2022-11-18 18:28:58,202 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:28:58,204 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 20 [2022-11-18 18:28:58,330 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 [2022-11-18 18:28:58,343 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-18 18:28:58,494 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-18 18:28:58,494 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2022-11-18 18:28:58,672 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 2 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 7 not checked. [2022-11-18 18:28:58,672 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:28:59,042 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:28:59,042 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [195853924] [2022-11-18 18:28:59,042 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [195853924] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 18:28:59,042 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [370291079] [2022-11-18 18:28:59,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:28:59,042 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-18 18:28:59,043 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_264ad1cc-aa93-4253-9da2-8bfa37ae3af4/bin/uautomizer-TMbwUNV5ro/cvc4 [2022-11-18 18:28:59,044 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_264ad1cc-aa93-4253-9da2-8bfa37ae3af4/bin/uautomizer-TMbwUNV5ro/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-18 18:28:59,045 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_264ad1cc-aa93-4253-9da2-8bfa37ae3af4/bin/uautomizer-TMbwUNV5ro/cvc4 --incremental --print-success --lang smt (26)] Waiting until timeout for monitored process [2022-11-18 18:29:01,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:29:01,113 INFO L263 TraceCheckSpWp]: Trace formula consists of 390 conjuncts, 22 conjunts are in the unsatisfiable core [2022-11-18 18:29:01,115 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:29:01,193 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-18 18:29:01,193 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2022-11-18 18:29:01,215 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-18 18:29:01,311 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:29:01,346 INFO L321 Elim1Store]: treesize reduction 23, result has 32.4 percent of original size [2022-11-18 18:29:01,346 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 [2022-11-18 18:29:01,500 INFO L321 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2022-11-18 18:29:01,501 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 20 [2022-11-18 18:29:01,631 WARN L859 $PredicateComparison]: unable to prove that (and (not (= |c_#StackHeapBarrier| (_ bv0 32))) (not (= (bvadd |c_#StackHeapBarrier| (_ bv1 32)) (_ bv0 32))) (exists ((v_ArrVal_1685 (_ BitVec 1)) (|create_sub_list_insert_sub_~sub~0#1.base| (_ BitVec 32))) (and (= |c_#valid| (store |c_old(#valid)| |create_sub_list_insert_sub_~sub~0#1.base| v_ArrVal_1685)) (bvult |create_sub_list_insert_sub_~sub~0#1.base| |c_#StackHeapBarrier|)))) is different from true [2022-11-18 18:29:01,681 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-18 18:29:01,859 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:29:01,899 INFO L321 Elim1Store]: treesize reduction 23, result has 32.4 percent of original size [2022-11-18 18:29:01,900 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 [2022-11-18 18:29:02,052 INFO L321 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2022-11-18 18:29:02,052 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 20 [2022-11-18 18:29:02,122 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_1686 (_ 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_1686) |c_#valid|) (bvult |create_sub_list_insert_sub_~sub~0#1.base| |c_#StackHeapBarrier|))) (not (= |c_#StackHeapBarrier| (_ bv0 32))) (not (= (bvadd |c_#StackHeapBarrier| (_ bv1 32)) (_ bv0 32)))) is different from true [2022-11-18 18:29:02,169 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 7 [2022-11-18 18:29:02,374 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:29:02,420 INFO L321 Elim1Store]: treesize reduction 23, result has 32.4 percent of original size [2022-11-18 18:29:02,420 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 [2022-11-18 18:29:03,090 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 14 trivial. 7 not checked. [2022-11-18 18:29:03,090 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:29:03,254 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [370291079] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 18:29:03,254 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 18:29:03,254 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 10] total 23 [2022-11-18 18:29:03,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [647799919] [2022-11-18 18:29:03,255 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 18:29:03,255 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-18 18:29:03,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:29:03,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-18 18:29:03,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=502, Unknown=15, NotChecked=196, Total=812 [2022-11-18 18:29:03,257 INFO L87 Difference]: Start difference. First operand 155 states and 166 transitions. Second operand has 24 states, 21 states have (on average 3.0) internal successors, (63), 20 states have internal predecessors, (63), 8 states have call successors, (10), 7 states have call predecessors, (10), 6 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2022-11-18 18:29:03,347 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_1686 (_ 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_1686) |c_#valid|) (bvult |create_sub_list_insert_sub_~sub~0#1.base| |c_#StackHeapBarrier|))) (not (= |c_#StackHeapBarrier| (_ bv0 32))) (exists ((v_ArrVal_1570 (_ BitVec 1)) (|create_sub_list_insert_sub_~sub~0#1.base| (_ BitVec 32))) (and (= |c_#valid| (store |c_old(#valid)| |create_sub_list_insert_sub_~sub~0#1.base| v_ArrVal_1570)) (bvult |create_sub_list_insert_sub_~sub~0#1.base| |c_#StackHeapBarrier|))) (not (= (bvadd |c_#StackHeapBarrier| (_ bv1 32)) (_ bv0 32))) (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)))) (exists ((v_ArrVal_1685 (_ BitVec 1)) (|create_sub_list_insert_sub_~sub~0#1.base| (_ BitVec 32))) (and (= |c_#valid| (store |c_old(#valid)| |create_sub_list_insert_sub_~sub~0#1.base| v_ArrVal_1685)) (bvult |create_sub_list_insert_sub_~sub~0#1.base| |c_#StackHeapBarrier|)))) is different from true [2022-11-18 18:29:03,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:29:03,644 INFO L93 Difference]: Finished difference Result 224 states and 244 transitions. [2022-11-18 18:29:03,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-18 18:29:03,645 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 21 states have (on average 3.0) internal successors, (63), 20 states have internal predecessors, (63), 8 states have call successors, (10), 7 states have call predecessors, (10), 6 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) Word has length 51 [2022-11-18 18:29:03,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:29:03,647 INFO L225 Difference]: With dead ends: 224 [2022-11-18 18:29:03,647 INFO L226 Difference]: Without dead ends: 224 [2022-11-18 18:29:03,647 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 85 SyntacticMatches, 3 SemanticMatches, 30 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 180 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=112, Invalid=593, Unknown=17, NotChecked=270, Total=992 [2022-11-18 18:29:03,648 INFO L413 NwaCegarLoop]: 71 mSDtfsCounter, 21 mSDsluCounter, 350 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 421 SdHoareTripleChecker+Invalid, 655 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 565 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 18:29:03,648 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 421 Invalid, 655 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 80 Invalid, 0 Unknown, 565 Unchecked, 0.3s Time] [2022-11-18 18:29:03,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2022-11-18 18:29:03,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 218. [2022-11-18 18:29:03,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218 states, 165 states have (on average 1.2545454545454546) internal successors, (207), 190 states have internal predecessors, (207), 14 states have call successors, (14), 14 states have call predecessors, (14), 16 states have return successors, (21), 13 states have call predecessors, (21), 14 states have call successors, (21) [2022-11-18 18:29:03,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 242 transitions. [2022-11-18 18:29:03,658 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 242 transitions. Word has length 51 [2022-11-18 18:29:03,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:29:03,659 INFO L495 AbstractCegarLoop]: Abstraction has 218 states and 242 transitions. [2022-11-18 18:29:03,659 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 21 states have (on average 3.0) internal successors, (63), 20 states have internal predecessors, (63), 8 states have call successors, (10), 7 states have call predecessors, (10), 6 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2022-11-18 18:29:03,659 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 242 transitions. [2022-11-18 18:29:03,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-11-18 18:29:03,660 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:29:03,660 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:29:03,680 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_264ad1cc-aa93-4253-9da2-8bfa37ae3af4/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2022-11-18 18:29:03,877 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_264ad1cc-aa93-4253-9da2-8bfa37ae3af4/bin/uautomizer-TMbwUNV5ro/cvc4 --incremental --print-success --lang smt (26)] Forceful destruction successful, exit code 0 [2022-11-18 18:29:04,061 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_264ad1cc-aa93-4253-9da2-8bfa37ae3af4/bin/uautomizer-TMbwUNV5ro/mathsat -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_264ad1cc-aa93-4253-9da2-8bfa37ae3af4/bin/uautomizer-TMbwUNV5ro/cvc4 --incremental --print-success --lang smt [2022-11-18 18:29:04,061 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting list_add_tailErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_sub_listErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_sub_listErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_sub_listErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-18 18:29:04,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:29:04,062 INFO L85 PathProgramCache]: Analyzing trace with hash 1768276040, now seen corresponding path program 1 times [2022-11-18 18:29:04,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:29:04,062 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1283878303] [2022-11-18 18:29:04,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:29:04,063 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:29:04,063 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_264ad1cc-aa93-4253-9da2-8bfa37ae3af4/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:29:04,064 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_264ad1cc-aa93-4253-9da2-8bfa37ae3af4/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:29:04,083 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_264ad1cc-aa93-4253-9da2-8bfa37ae3af4/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2022-11-18 18:29:04,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:29:04,638 INFO L263 TraceCheckSpWp]: Trace formula consists of 390 conjuncts, 29 conjunts are in the unsatisfiable core [2022-11-18 18:29:04,641 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:29:04,660 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-18 18:29:04,671 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-18 18:29:04,716 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:29:04,717 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-18 18:29:04,736 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-18 18:29:04,736 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-11-18 18:29:04,812 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-18 18:29:04,970 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-18 18:29:05,219 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:29:05,220 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-18 18:29:05,376 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 [2022-11-18 18:29:05,392 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-18 18:29:05,609 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-18 18:29:05,610 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 18 [2022-11-18 18:29:06,003 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 2 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 3 not checked. [2022-11-18 18:29:06,003 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:29:06,719 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:29:06,720 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1283878303] [2022-11-18 18:29:06,720 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1283878303] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 18:29:06,720 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2246926] [2022-11-18 18:29:06,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:29:06,720 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-18 18:29:06,720 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_264ad1cc-aa93-4253-9da2-8bfa37ae3af4/bin/uautomizer-TMbwUNV5ro/cvc4 [2022-11-18 18:29:06,721 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_264ad1cc-aa93-4253-9da2-8bfa37ae3af4/bin/uautomizer-TMbwUNV5ro/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-18 18:29:06,724 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_264ad1cc-aa93-4253-9da2-8bfa37ae3af4/bin/uautomizer-TMbwUNV5ro/cvc4 --incremental --print-success --lang smt (28)] Waiting until timeout for monitored process [2022-11-18 18:29:09,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:29:09,055 INFO L263 TraceCheckSpWp]: Trace formula consists of 390 conjuncts, 28 conjunts are in the unsatisfiable core [2022-11-18 18:29:09,058 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:29:09,067 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-18 18:29:09,087 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-18 18:29:09,191 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:29:09,192 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-18 18:29:09,356 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-18 18:29:09,595 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-18 18:29:09,702 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_1803 (_ 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_1803) |c_#length|) (bvult |create_sub_list_insert_sub_~sub~0#1.base| |c_#StackHeapBarrier|))) (not (= |c_#StackHeapBarrier| (_ bv0 32))) (not (= (bvadd |c_#StackHeapBarrier| (_ bv1 32)) (_ bv0 32)))) is different from true [2022-11-18 18:29:09,833 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:29:09,834 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-18 18:29:09,854 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-18 18:29:09,917 WARN L859 $PredicateComparison]: unable to prove that (and (not (= |c_#StackHeapBarrier| (_ bv0 32))) (not (= (bvadd |c_#StackHeapBarrier| (_ bv1 32)) (_ bv0 32))) (exists ((|create_sub_list_insert_sub_~sub~0#1.base| (_ BitVec 32)) (v_ArrVal_1919 (_ BitVec 32))) (and (= |c_#length| (store |c_old(#length)| |create_sub_list_insert_sub_~sub~0#1.base| v_ArrVal_1919)) (bvult |create_sub_list_insert_sub_~sub~0#1.base| |c_#StackHeapBarrier|)))) is different from true [2022-11-18 18:29:09,970 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-18 18:29:10,166 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:29:10,167 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-18 18:29:10,461 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 14 trivial. 7 not checked. [2022-11-18 18:29:10,462 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:29:12,855 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2246926] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 18:29:12,855 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 18:29:12,855 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11] total 21 [2022-11-18 18:29:12,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242720309] [2022-11-18 18:29:12,855 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 18:29:12,856 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-18 18:29:12,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:29:12,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-18 18:29:12,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=475, Unknown=9, NotChecked=138, Total=702 [2022-11-18 18:29:12,856 INFO L87 Difference]: Start difference. First operand 218 states and 242 transitions. Second operand has 22 states, 19 states have (on average 3.1578947368421053) internal successors, (60), 18 states have internal predecessors, (60), 7 states have call successors, (9), 7 states have call predecessors, (9), 6 states have return successors, (8), 7 states have call predecessors, (8), 6 states have call successors, (8) [2022-11-18 18:29:14,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:29:14,312 INFO L93 Difference]: Finished difference Result 226 states and 244 transitions. [2022-11-18 18:29:14,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-18 18:29:14,314 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 19 states have (on average 3.1578947368421053) internal successors, (60), 18 states have internal predecessors, (60), 7 states have call successors, (9), 7 states have call predecessors, (9), 6 states have return successors, (8), 7 states have call predecessors, (8), 6 states have call successors, (8) Word has length 51 [2022-11-18 18:29:14,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:29:14,315 INFO L225 Difference]: With dead ends: 226 [2022-11-18 18:29:14,315 INFO L226 Difference]: Without dead ends: 226 [2022-11-18 18:29:14,316 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 86 SyntacticMatches, 3 SemanticMatches, 32 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 198 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=126, Invalid=800, Unknown=16, NotChecked=180, Total=1122 [2022-11-18 18:29:14,317 INFO L413 NwaCegarLoop]: 64 mSDtfsCounter, 44 mSDsluCounter, 551 mSDsCounter, 0 mSdLazyCounter, 242 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 615 SdHoareTripleChecker+Invalid, 901 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 242 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 649 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-18 18:29:14,317 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 615 Invalid, 901 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 242 Invalid, 0 Unknown, 649 Unchecked, 0.7s Time] [2022-11-18 18:29:14,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2022-11-18 18:29:14,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 218. [2022-11-18 18:29:14,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218 states, 165 states have (on average 1.2484848484848485) internal successors, (206), 190 states have internal predecessors, (206), 14 states have call successors, (14), 14 states have call predecessors, (14), 16 states have return successors, (21), 13 states have call predecessors, (21), 14 states have call successors, (21) [2022-11-18 18:29:14,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 241 transitions. [2022-11-18 18:29:14,326 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 241 transitions. Word has length 51 [2022-11-18 18:29:14,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:29:14,327 INFO L495 AbstractCegarLoop]: Abstraction has 218 states and 241 transitions. [2022-11-18 18:29:14,327 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 19 states have (on average 3.1578947368421053) internal successors, (60), 18 states have internal predecessors, (60), 7 states have call successors, (9), 7 states have call predecessors, (9), 6 states have return successors, (8), 7 states have call predecessors, (8), 6 states have call successors, (8) [2022-11-18 18:29:14,327 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 241 transitions. [2022-11-18 18:29:14,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-11-18 18:29:14,328 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:29:14,328 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:29:14,340 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_264ad1cc-aa93-4253-9da2-8bfa37ae3af4/bin/uautomizer-TMbwUNV5ro/cvc4 --incremental --print-success --lang smt (28)] Forceful destruction successful, exit code 0 [2022-11-18 18:29:14,552 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_264ad1cc-aa93-4253-9da2-8bfa37ae3af4/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2022-11-18 18:29:14,740 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_264ad1cc-aa93-4253-9da2-8bfa37ae3af4/bin/uautomizer-TMbwUNV5ro/cvc4 --incremental --print-success --lang smt,27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_264ad1cc-aa93-4253-9da2-8bfa37ae3af4/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:29:14,741 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting list_add_tailErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_sub_listErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_sub_listErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_sub_listErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-18 18:29:14,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:29:14,741 INFO L85 PathProgramCache]: Analyzing trace with hash 636971300, now seen corresponding path program 2 times [2022-11-18 18:29:14,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:29:14,742 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1825994221] [2022-11-18 18:29:14,742 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 18:29:14,742 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:29:14,742 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_264ad1cc-aa93-4253-9da2-8bfa37ae3af4/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:29:14,743 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_264ad1cc-aa93-4253-9da2-8bfa37ae3af4/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:29:14,745 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_264ad1cc-aa93-4253-9da2-8bfa37ae3af4/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2022-11-18 18:29:15,512 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 18:29:15,512 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 18:29:15,543 INFO L263 TraceCheckSpWp]: Trace formula consists of 438 conjuncts, 99 conjunts are in the unsatisfiable core [2022-11-18 18:29:15,549 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:29:15,558 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-18 18:29:15,639 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-18 18:29:15,680 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:29:15,681 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 21 treesize of output 20 [2022-11-18 18:29:15,722 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-18 18:29:15,722 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-11-18 18:29:15,811 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-18 18:29:16,136 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-18 18:29:16,292 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-18 18:29:16,293 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 22 [2022-11-18 18:29:16,313 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-18 18:29:16,467 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-18 18:29:16,467 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 26 [2022-11-18 18:29:19,895 INFO L321 Elim1Store]: treesize reduction 27, result has 48.1 percent of original size [2022-11-18 18:29:19,896 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 46 [2022-11-18 18:29:20,130 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2022-11-18 18:29:20,288 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-18 18:29:20,288 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2022-11-18 18:29:20,510 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 19 [2022-11-18 18:29:20,528 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2022-11-18 18:29:22,071 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 23 [2022-11-18 18:29:22,134 INFO L321 Elim1Store]: treesize reduction 24, result has 38.5 percent of original size [2022-11-18 18:29:22,135 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 39 treesize of output 46 [2022-11-18 18:29:22,468 INFO L321 Elim1Store]: treesize reduction 56, result has 35.6 percent of original size [2022-11-18 18:29:22,468 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 30 treesize of output 51 [2022-11-18 18:29:22,500 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-18 18:29:22,723 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 32 [2022-11-18 18:29:23,358 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 19 [2022-11-18 18:29:23,374 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-18 18:29:23,729 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 3 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:29:23,730 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:29:24,999 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 22 [2022-11-18 18:29:27,311 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:29:27,311 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1825994221] [2022-11-18 18:29:27,311 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1825994221] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 18:29:27,312 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2031862024] [2022-11-18 18:29:27,312 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 18:29:27,312 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-18 18:29:27,312 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_264ad1cc-aa93-4253-9da2-8bfa37ae3af4/bin/uautomizer-TMbwUNV5ro/cvc4 [2022-11-18 18:29:27,313 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_264ad1cc-aa93-4253-9da2-8bfa37ae3af4/bin/uautomizer-TMbwUNV5ro/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-18 18:29:27,314 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_264ad1cc-aa93-4253-9da2-8bfa37ae3af4/bin/uautomizer-TMbwUNV5ro/cvc4 --incremental --print-success --lang smt (30)] Waiting until timeout for monitored process [2022-11-18 18:29:28,187 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 18:29:28,188 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1512059312] [2022-11-18 18:29:28,188 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 18:29:28,188 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:29:28,188 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_264ad1cc-aa93-4253-9da2-8bfa37ae3af4/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:29:28,192 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_264ad1cc-aa93-4253-9da2-8bfa37ae3af4/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:29:28,207 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_264ad1cc-aa93-4253-9da2-8bfa37ae3af4/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2022-11-18 18:29:28,208 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_264ad1cc-aa93-4253-9da2-8bfa37ae3af4/bin/uautomizer-TMbwUNV5ro/cvc4 --incremental --print-success --lang smt (30)] Forceful destruction successful, exit code 1 [2022-11-18 18:29:30,021 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 18:29:30,021 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 18:29:30,032 INFO L263 TraceCheckSpWp]: Trace formula consists of 438 conjuncts, 116 conjunts are in the unsatisfiable core [2022-11-18 18:29:30,038 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:29:30,043 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-18 18:29:30,049 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-18 18:29:30,584 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-18 18:29:30,595 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-18 18:29:30,838 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-18 18:29:30,849 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:29:30,849 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-18 18:29:30,860 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:29:30,861 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-18 18:29:31,097 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-18 18:29:31,098 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-11-18 18:29:31,373 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-18 18:29:31,385 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-18 18:29:34,134 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 65 treesize of output 36 [2022-11-18 18:29:34,228 INFO L321 Elim1Store]: treesize reduction 46, result has 19.3 percent of original size [2022-11-18 18:29:34,229 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 83 treesize of output 117 [2022-11-18 18:29:34,244 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 121 treesize of output 89 [2022-11-18 18:29:34,254 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 24 [2022-11-18 18:29:34,274 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 87 treesize of output 30 [2022-11-18 18:29:34,383 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-18 18:29:34,383 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2022-11-18 18:29:34,466 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 19 [2022-11-18 18:29:34,515 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 8 treesize of output 4 [2022-11-18 18:29:37,041 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 23 [2022-11-18 18:29:37,094 INFO L321 Elim1Store]: treesize reduction 24, result has 38.5 percent of original size [2022-11-18 18:29:37,094 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 39 treesize of output 46 [2022-11-18 18:29:37,215 INFO L321 Elim1Store]: treesize reduction 56, result has 35.6 percent of original size [2022-11-18 18:29:37,215 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 30 treesize of output 51 [2022-11-18 18:29:37,523 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 32 [2022-11-18 18:29:38,075 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 19 [2022-11-18 18:29:38,367 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 3 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:29:38,367 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:29:39,162 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2379 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| |c_create_sub_list_insert_sub_~sub~0#1.base| v_ArrVal_2379) |c_create_sub_list_insert_sub_~head#1.base|) (bvadd (_ bv4 32) |c_create_sub_list_insert_sub_~head#1.offset|))) (_ bv1 1)))) is different from false [2022-11-18 18:29:40,785 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1512059312] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 18:29:40,785 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 18:29:40,785 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 55 [2022-11-18 18:29:40,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151272693] [2022-11-18 18:29:40,786 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 18:29:40,786 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2022-11-18 18:29:40,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:29:40,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2022-11-18 18:29:40,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=231, Invalid=4364, Unknown=101, NotChecked=134, Total=4830 [2022-11-18 18:29:40,789 INFO L87 Difference]: Start difference. First operand 218 states and 241 transitions. Second operand has 56 states, 54 states have (on average 1.4074074074074074) internal successors, (76), 49 states have internal predecessors, (76), 7 states have call successors, (7), 7 states have call predecessors, (7), 4 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2022-11-18 18:30:03,003 WARN L233 SmtUtils]: Spent 8.41s on a formula simplification. DAG size of input: 78 DAG size of output: 59 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 18:30:07,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:30:07,509 INFO L93 Difference]: Finished difference Result 218 states and 240 transitions. [2022-11-18 18:30:07,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-11-18 18:30:07,510 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 54 states have (on average 1.4074074074074074) internal successors, (76), 49 states have internal predecessors, (76), 7 states have call successors, (7), 7 states have call predecessors, (7), 4 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) Word has length 51 [2022-11-18 18:30:07,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:30:07,512 INFO L225 Difference]: With dead ends: 218 [2022-11-18 18:30:07,512 INFO L226 Difference]: Without dead ends: 218 [2022-11-18 18:30:07,514 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 60 SyntacticMatches, 1 SemanticMatches, 92 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 2344 ImplicationChecksByTransitivity, 37.6s TimeCoverageRelationStatistics Valid=552, Invalid=7846, Unknown=162, NotChecked=182, Total=8742 [2022-11-18 18:30:07,514 INFO L413 NwaCegarLoop]: 66 mSDtfsCounter, 55 mSDsluCounter, 1435 mSDsCounter, 0 mSdLazyCounter, 888 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 1501 SdHoareTripleChecker+Invalid, 1572 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 888 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 660 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-11-18 18:30:07,515 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 1501 Invalid, 1572 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 888 Invalid, 0 Unknown, 660 Unchecked, 3.2s Time] [2022-11-18 18:30:07,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2022-11-18 18:30:07,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 218. [2022-11-18 18:30:07,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218 states, 165 states have (on average 1.2424242424242424) internal successors, (205), 190 states have internal predecessors, (205), 14 states have call successors, (14), 14 states have call predecessors, (14), 16 states have return successors, (21), 13 states have call predecessors, (21), 14 states have call successors, (21) [2022-11-18 18:30:07,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 240 transitions. [2022-11-18 18:30:07,524 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 240 transitions. Word has length 51 [2022-11-18 18:30:07,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:30:07,524 INFO L495 AbstractCegarLoop]: Abstraction has 218 states and 240 transitions. [2022-11-18 18:30:07,524 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 54 states have (on average 1.4074074074074074) internal successors, (76), 49 states have internal predecessors, (76), 7 states have call successors, (7), 7 states have call predecessors, (7), 4 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2022-11-18 18:30:07,525 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 240 transitions. [2022-11-18 18:30:07,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-11-18 18:30:07,525 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:30:07,526 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:30:07,545 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_264ad1cc-aa93-4253-9da2-8bfa37ae3af4/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (29)] Ended with exit code 0 [2022-11-18 18:30:07,754 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_264ad1cc-aa93-4253-9da2-8bfa37ae3af4/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2022-11-18 18:30:07,944 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_264ad1cc-aa93-4253-9da2-8bfa37ae3af4/bin/uautomizer-TMbwUNV5ro/mathsat -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 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_264ad1cc-aa93-4253-9da2-8bfa37ae3af4/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:30:07,944 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting list_add_tailErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_sub_listErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_sub_listErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_sub_listErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-18 18:30:07,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:30:07,945 INFO L85 PathProgramCache]: Analyzing trace with hash 636971301, now seen corresponding path program 2 times [2022-11-18 18:30:07,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:30:07,945 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1725549829] [2022-11-18 18:30:07,945 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 18:30:07,945 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:30:07,945 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_264ad1cc-aa93-4253-9da2-8bfa37ae3af4/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:30:07,946 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_264ad1cc-aa93-4253-9da2-8bfa37ae3af4/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:30:07,947 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_264ad1cc-aa93-4253-9da2-8bfa37ae3af4/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2022-11-18 18:30:08,792 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 18:30:08,792 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 18:30:08,818 INFO L263 TraceCheckSpWp]: Trace formula consists of 438 conjuncts, 122 conjunts are in the unsatisfiable core [2022-11-18 18:30:08,825 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:30:08,830 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-18 18:30:08,911 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-18 18:30:08,959 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:30:08,960 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-18 18:30:08,984 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-18 18:30:08,984 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-11-18 18:30:09,083 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-18 18:30:09,398 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-18 18:30:09,528 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-18 18:30:09,528 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 22 [2022-11-18 18:30:09,537 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 7 treesize of output 3 [2022-11-18 18:30:09,706 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-18 18:30:09,707 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 26 [2022-11-18 18:30:10,748 INFO L321 Elim1Store]: treesize reduction 27, result has 48.1 percent of original size [2022-11-18 18:30:10,748 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 46 [2022-11-18 18:30:10,997 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2022-11-18 18:30:11,170 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-18 18:30:11,170 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2022-11-18 18:30:11,192 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-18 18:30:11,411 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 19 [2022-11-18 18:30:11,451 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2022-11-18 18:30:12,323 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-18 18:30:12,570 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-18 18:30:12,570 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 22 [2022-11-18 18:30:12,592 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-18 18:30:12,918 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-18 18:30:12,918 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 26 [2022-11-18 18:30:13,214 INFO L321 Elim1Store]: treesize reduction 17, result has 46.9 percent of original size [2022-11-18 18:30:13,214 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 38 [2022-11-18 18:30:13,223 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-18 18:30:13,629 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 23 [2022-11-18 18:30:13,692 INFO L321 Elim1Store]: treesize reduction 24, result has 38.5 percent of original size [2022-11-18 18:30:13,692 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 50 treesize of output 55 [2022-11-18 18:30:14,124 INFO L321 Elim1Store]: treesize reduction 12, result has 52.0 percent of original size [2022-11-18 18:30:14,124 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 24 treesize of output 26 [2022-11-18 18:30:14,152 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-18 18:30:14,434 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 30 [2022-11-18 18:30:14,449 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-18 18:30:15,254 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 17 [2022-11-18 18:30:15,293 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-18 18:30:15,824 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 3 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:30:15,824 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:30:20,603 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 18:30:20,603 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 71 treesize of output 60 [2022-11-18 18:30:20,657 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 18:30:20,657 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 414 treesize of output 395 [2022-11-18 18:30:20,681 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 [2022-11-18 18:30:20,703 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 [2022-11-18 18:30:20,735 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 [2022-11-18 18:30:21,552 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 18:30:21,553 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 74 treesize of output 75 [2022-11-18 18:30:21,559 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 18:30:21,615 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 18:30:21,616 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 482 treesize of output 475 [2022-11-18 18:30:21,667 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 229 treesize of output 221 [2022-11-18 18:30:21,685 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 450 treesize of output 434 [2022-11-18 18:31:14,531 WARN L233 SmtUtils]: Spent 34.77s on a formula simplification. DAG size of input: 114 DAG size of output: 66 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 18:31:14,532 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:31:14,532 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1725549829] [2022-11-18 18:31:14,533 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1725549829] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 18:31:14,533 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [59793699] [2022-11-18 18:31:14,533 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 18:31:14,533 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-18 18:31:14,533 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_264ad1cc-aa93-4253-9da2-8bfa37ae3af4/bin/uautomizer-TMbwUNV5ro/cvc4 [2022-11-18 18:31:14,539 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_264ad1cc-aa93-4253-9da2-8bfa37ae3af4/bin/uautomizer-TMbwUNV5ro/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-18 18:31:14,551 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_264ad1cc-aa93-4253-9da2-8bfa37ae3af4/bin/uautomizer-TMbwUNV5ro/cvc4 --incremental --print-success --lang smt (33)] Waiting until timeout for monitored process [2022-11-18 18:31:17,571 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 18:31:17,571 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 18:31:17,623 INFO L263 TraceCheckSpWp]: Trace formula consists of 438 conjuncts, 137 conjunts are in the unsatisfiable core [2022-11-18 18:31:17,631 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:31:17,639 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-18 18:31:17,707 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-18 18:31:17,737 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-18 18:31:18,145 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:31:18,146 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-18 18:31:18,166 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:31:18,166 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-18 18:31:18,231 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-18 18:31:18,231 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-11-18 18:31:18,729 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-18 18:31:18,771 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-18 18:31:22,839 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 78 treesize of output 43 [2022-11-18 18:31:22,951 INFO L321 Elim1Store]: treesize reduction 46, result has 19.3 percent of original size [2022-11-18 18:31:22,952 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 83 treesize of output 117 [2022-11-18 18:31:22,964 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 26 [2022-11-18 18:31:22,982 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:31:22,983 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 109 treesize of output 77 [2022-11-18 18:31:23,009 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 [2022-11-18 18:31:23,167 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-18 18:31:23,167 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2022-11-18 18:31:23,205 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-18 18:31:23,416 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 19 [2022-11-18 18:31:23,453 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2022-11-18 18:31:24,010 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-18 18:31:24,179 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-18 18:31:24,179 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 22 [2022-11-18 18:31:24,211 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-18 18:31:24,505 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-18 18:31:24,505 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 26 [2022-11-18 18:31:24,929 INFO L321 Elim1Store]: treesize reduction 17, result has 46.9 percent of original size [2022-11-18 18:31:24,930 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 38 [2022-11-18 18:31:24,969 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-18 18:31:25,469 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 23 [2022-11-18 18:31:25,579 INFO L321 Elim1Store]: treesize reduction 24, result has 38.5 percent of original size [2022-11-18 18:31:25,580 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 50 treesize of output 55 [2022-11-18 18:31:25,806 INFO L321 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2022-11-18 18:31:25,807 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 [2022-11-18 18:31:25,909 INFO L321 Elim1Store]: treesize reduction 12, result has 52.0 percent of original size [2022-11-18 18:31:25,909 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 24 treesize of output 26 [2022-11-18 18:31:26,470 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 30 [2022-11-18 18:31:26,510 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-18 18:31:27,574 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 18:31:27,575 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 7 [2022-11-18 18:31:27,593 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 18:31:27,594 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 17 [2022-11-18 18:31:28,964 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 3 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:31:28,964 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:31:34,811 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 18:31:34,812 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 74 treesize of output 75 [2022-11-18 18:31:34,899 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 18:31:34,899 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 468 treesize of output 467 [2022-11-18 18:31:34,920 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 450 treesize of output 434 [2022-11-18 18:31:34,939 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 434 treesize of output 426 [2022-11-18 18:31:34,975 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 214 treesize of output 210 [2022-11-18 18:31:42,848 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2022-11-18 18:31:43,506 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 14 treesize of output 10 [2022-11-18 18:31:43,748 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2022-11-18 18:31:43,802 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2022-11-18 18:31:43,911 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 29 treesize of output 21 [2022-11-18 18:31:44,223 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2022-11-18 18:31:44,513 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2022-11-18 18:31:44,706 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2022-11-18 18:31:44,744 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2022-11-18 18:31:44,780 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2022-11-18 18:31:44,816 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2022-11-18 18:31:44,856 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 31 [2022-11-18 18:31:44,922 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 29 treesize of output 21 [2022-11-18 18:31:45,082 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2022-11-18 18:31:45,280 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 14 treesize of output 10 [2022-11-18 18:31:45,500 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 [2022-11-18 18:31:45,550 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2022-11-18 18:31:45,678 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2022-11-18 18:31:45,759 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2022-11-18 18:31:45,964 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2022-11-18 18:31:46,539 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2022-11-18 18:31:46,583 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2022-11-18 18:31:46,624 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 [2022-11-18 18:31:46,665 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 29 treesize of output 21 [2022-11-18 18:31:46,705 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 31 [2022-11-18 18:31:46,774 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2022-11-18 18:31:47,074 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2022-11-18 18:31:47,773 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 14 treesize of output 10 [2022-11-18 18:31:48,011 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2022-11-18 18:31:48,064 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2022-11-18 18:31:48,178 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 29 treesize of output 21 [2022-11-18 18:31:48,505 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2022-11-18 18:31:48,807 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2022-11-18 18:31:48,996 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2022-11-18 18:31:49,041 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2022-11-18 18:31:49,076 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2022-11-18 18:31:49,110 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2022-11-18 18:31:49,149 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 31 [2022-11-18 18:31:49,208 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2022-11-18 18:31:49,384 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 18:31:49,384 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 71 treesize of output 60 [2022-11-18 18:31:49,478 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 18:31:49,479 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 474 treesize of output 455 [2022-11-18 18:31:49,500 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 438 treesize of output 374 [2022-11-18 18:31:49,518 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 374 treesize of output 342 [2022-11-18 18:31:49,552 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 178 treesize of output 162 [2022-11-18 18:31:52,326 WARN L859 $PredicateComparison]: unable to prove that (let ((.cse102 (select |c_#memory_$Pointer$.base| |c_create_sub_list_insert_sub_~head#1.base|)) (.cse103 (bvadd (_ bv4 32) |c_create_sub_list_insert_sub_~head#1.offset|))) (let ((.cse49 (select .cse102 .cse103))) (let ((.cse17 (= .cse49 |c_create_sub_list_~sub#1.base|)) (.cse45 (bvadd (_ bv8 32) |c_create_sub_list_~sub#1.offset|)) (.cse48 (store |c_#memory_$Pointer$.base| |c_create_sub_list_insert_sub_~head#1.base| (store .cse102 .cse103 |c_create_sub_list_insert_sub_~sub~0#1.base|))) (.cse50 (bvadd (_ bv4 32) |c_create_sub_list_~sub#1.offset|))) (let ((.cse82 (forall ((v_arrayElimCell_306 (_ BitVec 32)) (v_arrayElimCell_305 (_ BitVec 32)) (v_ArrVal_2754 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2733 (Array (_ BitVec 32) (_ BitVec 32))) (v_arrayElimCell_307 (_ BitVec 32)) (v_ArrVal_2752 (Array (_ BitVec 32) (_ BitVec 32))) (|v_create_sub_list_insert_sub_~sub~0#1.base_73| (_ BitVec 32))) (let ((.cse100 (store |c_#length| |v_create_sub_list_insert_sub_~sub~0#1.base_73| (_ bv12 32)))) (let ((.cse101 (select .cse100 (select (select (store (store (store .cse48 |c_create_sub_list_insert_sub_~sub~0#1.base| v_ArrVal_2754) .cse49 v_ArrVal_2752) |v_create_sub_list_insert_sub_~sub~0#1.base_73| v_ArrVal_2733) |c_create_sub_list_~sub#1.base|) .cse50)))) (or (not (bvule .cse45 (select .cse100 |c_create_sub_list_~sub#1.base|))) (bvule (bvadd v_arrayElimCell_305 (_ bv4 32)) .cse101) (bvule (bvadd v_arrayElimCell_307 (_ bv4 32)) .cse101) (bvule (bvadd v_arrayElimCell_306 (_ bv4 32)) .cse101) (not (= (_ bv0 1) (select |c_#valid| |v_create_sub_list_insert_sub_~sub~0#1.base_73|)))))))) (.cse13 (forall ((|v_create_sub_list_insert_sub_~sub~0#1.base_73| (_ BitVec 32))) (let ((.cse98 (store |c_#length| |v_create_sub_list_insert_sub_~sub~0#1.base_73| (_ bv12 32)))) (or (not (bvule .cse45 (select .cse98 |c_create_sub_list_~sub#1.base|))) (forall ((v_ArrVal_2754 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2733 (Array (_ BitVec 32) (_ BitVec 32))) (v_arrayElimCell_307 (_ BitVec 32)) (v_ArrVal_2752 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse99 (select .cse98 (select (select (store (store (store .cse48 |c_create_sub_list_insert_sub_~sub~0#1.base| v_ArrVal_2754) .cse49 v_ArrVal_2752) |v_create_sub_list_insert_sub_~sub~0#1.base_73| v_ArrVal_2733) |c_create_sub_list_~sub#1.base|) .cse50)))) (or (bvule (bvadd v_arrayElimCell_307 (_ bv4 32)) .cse99) (forall ((v_arrayElimCell_306 (_ BitVec 32))) (bvule (bvadd v_arrayElimCell_306 (_ bv4 32)) .cse99))))) (not (= (_ bv0 1) (select |c_#valid| |v_create_sub_list_insert_sub_~sub~0#1.base_73|))))))) (.cse16 (forall ((|v_create_sub_list_insert_sub_~sub~0#1.base_73| (_ BitVec 32))) (let ((.cse97 (store |c_#length| |v_create_sub_list_insert_sub_~sub~0#1.base_73| (_ bv12 32)))) (or (not (bvule .cse45 (select .cse97 |c_create_sub_list_~sub#1.base|))) (= |v_create_sub_list_insert_sub_~sub~0#1.base_73| |c_create_sub_list_~sub#1.base|) (not (= (_ bv0 1) (select |c_#valid| |v_create_sub_list_insert_sub_~sub~0#1.base_73|))) (forall ((v_ArrVal_2754 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2733 (Array (_ BitVec 32) (_ BitVec 32))) (v_arrayElimCell_307 (_ BitVec 32)) (v_ArrVal_2752 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd v_arrayElimCell_307 (_ bv4 32)) (select .cse97 (select (select (store (store (store .cse48 |c_create_sub_list_insert_sub_~sub~0#1.base| v_ArrVal_2754) .cse49 v_ArrVal_2752) |v_create_sub_list_insert_sub_~sub~0#1.base_73| v_ArrVal_2733) |c_create_sub_list_~sub#1.base|) .cse50)))))))) (.cse3 (= |c_create_sub_list_insert_sub_~sub~0#1.base| |c_create_sub_list_~sub#1.base|)) (.cse5 (not .cse17)) (.cse76 (forall ((v_arrayElimCell_305 (_ BitVec 32)) (v_ArrVal_2754 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2733 (Array (_ BitVec 32) (_ BitVec 32))) (v_arrayElimCell_307 (_ BitVec 32)) (v_ArrVal_2752 (Array (_ BitVec 32) (_ BitVec 32))) (|v_create_sub_list_insert_sub_~sub~0#1.base_73| (_ BitVec 32))) (let ((.cse95 (store |c_#length| |v_create_sub_list_insert_sub_~sub~0#1.base_73| (_ bv12 32)))) (let ((.cse96 (select .cse95 (select (select (store (store (store .cse48 |c_create_sub_list_insert_sub_~sub~0#1.base| v_ArrVal_2754) .cse49 v_ArrVal_2752) |v_create_sub_list_insert_sub_~sub~0#1.base_73| v_ArrVal_2733) |c_create_sub_list_~sub#1.base|) .cse50)))) (or (not (bvule .cse45 (select .cse95 |c_create_sub_list_~sub#1.base|))) (bvule (bvadd v_arrayElimCell_305 (_ bv4 32)) .cse96) (= |v_create_sub_list_insert_sub_~sub~0#1.base_73| |c_create_sub_list_~sub#1.base|) (bvule (bvadd v_arrayElimCell_307 (_ bv4 32)) .cse96) (not (= (_ bv0 1) (select |c_#valid| |v_create_sub_list_insert_sub_~sub~0#1.base_73|)))))))) (.cse8 (bvadd (_ bv8 32) |c_create_sub_list_insert_sub_~sub~0#1.offset|))) (let ((.cse4 (forall ((v_ArrVal_2754 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2733 (Array (_ BitVec 32) (_ BitVec 32))) (v_arrayElimCell_307 (_ BitVec 32)) (v_ArrVal_2752 (Array (_ BitVec 32) (_ BitVec 32))) (|v_create_sub_list_insert_sub_~sub~0#1.base_73| (_ BitVec 32))) (let ((.cse93 (store |c_#length| |v_create_sub_list_insert_sub_~sub~0#1.base_73| (_ bv12 32)))) (let ((.cse94 (select .cse93 (select (select (store (store (store .cse48 |c_create_sub_list_insert_sub_~sub~0#1.base| v_ArrVal_2754) .cse49 v_ArrVal_2752) |v_create_sub_list_insert_sub_~sub~0#1.base_73| v_ArrVal_2733) |c_create_sub_list_~sub#1.base|) .cse50)))) (or (not (bvule .cse45 (select .cse93 |c_create_sub_list_~sub#1.base|))) (= |v_create_sub_list_insert_sub_~sub~0#1.base_73| |c_create_sub_list_~sub#1.base|) (bvule .cse8 .cse94) (bvule (bvadd v_arrayElimCell_307 (_ bv4 32)) .cse94) (not (= (_ bv0 1) (select |c_#valid| |v_create_sub_list_insert_sub_~sub~0#1.base_73|)))))))) (.cse0 (forall ((|v_create_sub_list_insert_sub_~sub~0#1.base_73| (_ BitVec 32))) (or (not (bvule .cse45 (select (store |c_#length| |v_create_sub_list_insert_sub_~sub~0#1.base_73| (_ bv12 32)) |c_create_sub_list_~sub#1.base|))) (not (= (_ bv0 1) (select |c_#valid| |v_create_sub_list_insert_sub_~sub~0#1.base_73|)))))) (.cse1 (= |c_create_sub_list_insert_sub_~head#1.base| |c_create_sub_list_~sub#1.base|)) (.cse6 (forall ((v_arrayElimCell_306 (_ BitVec 32)) (v_ArrVal_2754 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2733 (Array (_ BitVec 32) (_ BitVec 32))) (v_arrayElimCell_307 (_ BitVec 32)) (v_ArrVal_2752 (Array (_ BitVec 32) (_ BitVec 32))) (|v_create_sub_list_insert_sub_~sub~0#1.base_73| (_ BitVec 32))) (let ((.cse91 (store |c_#length| |v_create_sub_list_insert_sub_~sub~0#1.base_73| (_ bv12 32)))) (let ((.cse92 (select .cse91 (select (select (store (store (store .cse48 |c_create_sub_list_insert_sub_~sub~0#1.base| v_ArrVal_2754) .cse49 v_ArrVal_2752) |v_create_sub_list_insert_sub_~sub~0#1.base_73| v_ArrVal_2733) |c_create_sub_list_~sub#1.base|) .cse50)))) (or (not (bvule .cse45 (select .cse91 |c_create_sub_list_~sub#1.base|))) (bvule .cse8 .cse92) (bvule (bvadd v_arrayElimCell_307 (_ bv4 32)) .cse92) (bvule (bvadd v_arrayElimCell_306 (_ bv4 32)) .cse92) (not (= (_ bv0 1) (select |c_#valid| |v_create_sub_list_insert_sub_~sub~0#1.base_73|)))))))) (.cse2 (= |c_create_sub_list_insert_sub_~head#1.offset| |c_create_sub_list_~sub#1.offset|)) (.cse23 (forall ((|v_create_sub_list_insert_sub_~sub~0#1.base_73| (_ BitVec 32))) (let ((.cse89 (store |c_#length| |v_create_sub_list_insert_sub_~sub~0#1.base_73| (_ bv12 32)))) (or (not (bvule .cse45 (select .cse89 |c_create_sub_list_~sub#1.base|))) (forall ((v_arrayElimCell_306 (_ BitVec 32)) (v_arrayElimCell_305 (_ BitVec 32)) (v_ArrVal_2754 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2733 (Array (_ BitVec 32) (_ BitVec 32))) (v_arrayElimCell_307 (_ BitVec 32)) (v_ArrVal_2752 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse90 (select .cse89 (select (select (store (store (store .cse48 |c_create_sub_list_insert_sub_~sub~0#1.base| v_ArrVal_2754) .cse49 v_ArrVal_2752) |v_create_sub_list_insert_sub_~sub~0#1.base_73| v_ArrVal_2733) |c_create_sub_list_~sub#1.base|) .cse50)))) (or (bvule (bvadd v_arrayElimCell_305 (_ bv4 32)) .cse90) (forall ((v_arrayElimCell_308 (_ BitVec 32))) (bvule (bvadd v_arrayElimCell_308 (_ bv4 32)) .cse90)) (bvule (bvadd v_arrayElimCell_307 (_ bv4 32)) .cse90) (bvule (bvadd v_arrayElimCell_306 (_ bv4 32)) .cse90)))) (not (= (_ bv0 1) (select |c_#valid| |v_create_sub_list_insert_sub_~sub~0#1.base_73|))))))) (.cse37 (forall ((|v_create_sub_list_insert_sub_~sub~0#1.base_73| (_ BitVec 32))) (let ((.cse87 (store |c_#length| |v_create_sub_list_insert_sub_~sub~0#1.base_73| (_ bv12 32)))) (or (not (bvule .cse45 (select .cse87 |c_create_sub_list_~sub#1.base|))) (not (= (_ bv0 1) (select |c_#valid| |v_create_sub_list_insert_sub_~sub~0#1.base_73|))) (forall ((v_arrayElimCell_306 (_ BitVec 32)) (v_arrayElimCell_305 (_ BitVec 32)) (v_ArrVal_2754 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2733 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2752 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse88 (select .cse87 (select (select (store (store (store .cse48 |c_create_sub_list_insert_sub_~sub~0#1.base| v_ArrVal_2754) .cse49 v_ArrVal_2752) |v_create_sub_list_insert_sub_~sub~0#1.base_73| v_ArrVal_2733) |c_create_sub_list_~sub#1.base|) .cse50)))) (or (bvule (bvadd v_arrayElimCell_305 (_ bv4 32)) .cse88) (forall ((v_arrayElimCell_308 (_ BitVec 32))) (bvule (bvadd v_arrayElimCell_308 (_ bv4 32)) .cse88)) (bvule (bvadd v_arrayElimCell_306 (_ bv4 32)) .cse88)))))))) (.cse28 (or .cse5 .cse76)) (.cse12 (forall ((|v_create_sub_list_insert_sub_~sub~0#1.base_73| (_ BitVec 32))) (let ((.cse85 (store |c_#length| |v_create_sub_list_insert_sub_~sub~0#1.base_73| (_ bv12 32)))) (or (not (bvule .cse45 (select .cse85 |c_create_sub_list_~sub#1.base|))) (forall ((v_ArrVal_2754 (Array (_ BitVec 32) (_ BitVec 32))) (v_arrayElimCell_308 (_ BitVec 32)) (v_ArrVal_2733 (Array (_ BitVec 32) (_ BitVec 32))) (v_arrayElimCell_307 (_ BitVec 32)) (v_ArrVal_2752 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse86 (select .cse85 (select (select (store (store (store .cse48 |c_create_sub_list_insert_sub_~sub~0#1.base| v_ArrVal_2754) .cse49 v_ArrVal_2752) |v_create_sub_list_insert_sub_~sub~0#1.base_73| v_ArrVal_2733) |c_create_sub_list_~sub#1.base|) .cse50)))) (or (bvule (bvadd v_arrayElimCell_307 (_ bv4 32)) .cse86) (bvule (bvadd v_arrayElimCell_308 (_ bv4 32)) .cse86) (forall ((v_arrayElimCell_306 (_ BitVec 32))) (bvule (bvadd v_arrayElimCell_306 (_ bv4 32)) .cse86))))) (not (= (_ bv0 1) (select |c_#valid| |v_create_sub_list_insert_sub_~sub~0#1.base_73|))))))) (.cse14 (forall ((|v_create_sub_list_insert_sub_~sub~0#1.base_73| (_ BitVec 32))) (let ((.cse83 (store |c_#length| |v_create_sub_list_insert_sub_~sub~0#1.base_73| (_ bv12 32)))) (or (not (bvule .cse45 (select .cse83 |c_create_sub_list_~sub#1.base|))) (= |v_create_sub_list_insert_sub_~sub~0#1.base_73| |c_create_sub_list_~sub#1.base|) (not (= (_ bv0 1) (select |c_#valid| |v_create_sub_list_insert_sub_~sub~0#1.base_73|))) (forall ((v_ArrVal_2754 (Array (_ BitVec 32) (_ BitVec 32))) (v_arrayElimCell_308 (_ BitVec 32)) (v_ArrVal_2733 (Array (_ BitVec 32) (_ BitVec 32))) (v_arrayElimCell_307 (_ BitVec 32)) (v_ArrVal_2752 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse84 (select .cse83 (select (select (store (store (store .cse48 |c_create_sub_list_insert_sub_~sub~0#1.base| v_ArrVal_2754) .cse49 v_ArrVal_2752) |v_create_sub_list_insert_sub_~sub~0#1.base_73| v_ArrVal_2733) |c_create_sub_list_~sub#1.base|) .cse50)))) (or (bvule (bvadd v_arrayElimCell_307 (_ bv4 32)) .cse84) (bvule (bvadd v_arrayElimCell_308 (_ bv4 32)) .cse84)))))))) (.cse15 (or (and .cse13 .cse16) .cse3)) (.cse39 (or .cse3 .cse82)) (.cse40 (or .cse5 .cse82)) (.cse41 (or (and (forall ((|v_create_sub_list_insert_sub_~sub~0#1.base_73| (_ BitVec 32))) (let ((.cse79 (store |c_#length| |v_create_sub_list_insert_sub_~sub~0#1.base_73| (_ bv12 32)))) (or (not (bvule .cse45 (select .cse79 |c_create_sub_list_~sub#1.base|))) (= |v_create_sub_list_insert_sub_~sub~0#1.base_73| |c_create_sub_list_~sub#1.base|) (not (= (_ bv0 1) (select |c_#valid| |v_create_sub_list_insert_sub_~sub~0#1.base_73|))) (forall ((v_arrayElimCell_305 (_ BitVec 32)) (v_ArrVal_2754 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2733 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2752 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse80 (select .cse79 (select (select (store (store (store .cse48 |c_create_sub_list_insert_sub_~sub~0#1.base| v_ArrVal_2754) .cse49 v_ArrVal_2752) |v_create_sub_list_insert_sub_~sub~0#1.base_73| v_ArrVal_2733) |c_create_sub_list_~sub#1.base|) .cse50)))) (or (bvule (bvadd v_arrayElimCell_305 (_ bv4 32)) .cse80) (forall ((v_arrayElimCell_308 (_ BitVec 32))) (bvule (bvadd v_arrayElimCell_308 (_ bv4 32)) .cse80)))))))) (or .cse3 (forall ((v_arrayElimCell_305 (_ BitVec 32)) (v_ArrVal_2754 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2733 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2752 (Array (_ BitVec 32) (_ BitVec 32))) (|v_create_sub_list_insert_sub_~sub~0#1.base_73| (_ BitVec 32))) (let ((.cse81 (store |c_#length| |v_create_sub_list_insert_sub_~sub~0#1.base_73| (_ bv12 32)))) (or (not (bvule .cse45 (select .cse81 |c_create_sub_list_~sub#1.base|))) (bvule (bvadd v_arrayElimCell_305 (_ bv4 32)) (select .cse81 (select (select (store (store (store .cse48 |c_create_sub_list_insert_sub_~sub~0#1.base| v_ArrVal_2754) .cse49 v_ArrVal_2752) |v_create_sub_list_insert_sub_~sub~0#1.base_73| v_ArrVal_2733) |c_create_sub_list_~sub#1.base|) .cse50))) (= |v_create_sub_list_insert_sub_~sub~0#1.base_73| |c_create_sub_list_~sub#1.base|) (not (= (_ bv0 1) (select |c_#valid| |v_create_sub_list_insert_sub_~sub~0#1.base_73|)))))))) .cse17)) (.cse42 (forall ((|v_create_sub_list_insert_sub_~sub~0#1.base_73| (_ BitVec 32))) (let ((.cse78 (store |c_#length| |v_create_sub_list_insert_sub_~sub~0#1.base_73| (_ bv12 32)))) (or (forall ((v_arrayElimCell_305 (_ BitVec 32)) (v_ArrVal_2754 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2733 (Array (_ BitVec 32) (_ BitVec 32))) (v_arrayElimCell_307 (_ BitVec 32)) (v_ArrVal_2752 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse77 (select .cse78 (select (select (store (store (store .cse48 |c_create_sub_list_insert_sub_~sub~0#1.base| v_ArrVal_2754) .cse49 v_ArrVal_2752) |v_create_sub_list_insert_sub_~sub~0#1.base_73| v_ArrVal_2733) |c_create_sub_list_~sub#1.base|) .cse50)))) (or (bvule (bvadd v_arrayElimCell_305 (_ bv4 32)) .cse77) (forall ((v_arrayElimCell_308 (_ BitVec 32))) (bvule (bvadd v_arrayElimCell_308 (_ bv4 32)) .cse77)) (bvule (bvadd v_arrayElimCell_307 (_ bv4 32)) .cse77)))) (not (bvule .cse45 (select .cse78 |c_create_sub_list_~sub#1.base|))) (= |v_create_sub_list_insert_sub_~sub~0#1.base_73| |c_create_sub_list_~sub#1.base|) (not (= (_ bv0 1) (select |c_#valid| |v_create_sub_list_insert_sub_~sub~0#1.base_73|))))))) (.cse43 (or .cse3 .cse76)) (.cse35 (forall ((|v_create_sub_list_insert_sub_~sub~0#1.base_73| (_ BitVec 32))) (let ((.cse74 (store |c_#length| |v_create_sub_list_insert_sub_~sub~0#1.base_73| (_ bv12 32)))) (or (not (bvule .cse45 (select .cse74 |c_create_sub_list_~sub#1.base|))) (forall ((v_arrayElimCell_306 (_ BitVec 32)) (v_ArrVal_2754 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2733 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2752 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse75 (select .cse74 (select (select (store (store (store .cse48 |c_create_sub_list_insert_sub_~sub~0#1.base| v_ArrVal_2754) .cse49 v_ArrVal_2752) |v_create_sub_list_insert_sub_~sub~0#1.base_73| v_ArrVal_2733) |c_create_sub_list_~sub#1.base|) .cse50)))) (or (forall ((v_arrayElimCell_307 (_ BitVec 32))) (bvule (bvadd v_arrayElimCell_307 (_ bv4 32)) .cse75)) (bvule (bvadd v_arrayElimCell_306 (_ bv4 32)) .cse75)))) (not (= (_ bv0 1) (select |c_#valid| |v_create_sub_list_insert_sub_~sub~0#1.base_73|))))))) (.cse30 (forall ((|v_create_sub_list_insert_sub_~sub~0#1.base_73| (_ BitVec 32))) (let ((.cse72 (store |c_#length| |v_create_sub_list_insert_sub_~sub~0#1.base_73| (_ bv12 32)))) (or (not (bvule .cse45 (select .cse72 |c_create_sub_list_~sub#1.base|))) (forall ((v_ArrVal_2754 (Array (_ BitVec 32) (_ BitVec 32))) (v_arrayElimCell_308 (_ BitVec 32)) (v_ArrVal_2733 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2752 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse73 (select .cse72 (select (select (store (store (store .cse48 |c_create_sub_list_insert_sub_~sub~0#1.base| v_ArrVal_2754) .cse49 v_ArrVal_2752) |v_create_sub_list_insert_sub_~sub~0#1.base_73| v_ArrVal_2733) |c_create_sub_list_~sub#1.base|) .cse50)))) (or (bvule (bvadd v_arrayElimCell_308 (_ bv4 32)) .cse73) (forall ((v_arrayElimCell_306 (_ BitVec 32))) (bvule (bvadd v_arrayElimCell_306 (_ bv4 32)) .cse73))))) (not (= (_ bv0 1) (select |c_#valid| |v_create_sub_list_insert_sub_~sub~0#1.base_73|))))))) (.cse31 (forall ((|v_create_sub_list_insert_sub_~sub~0#1.base_73| (_ BitVec 32))) (let ((.cse71 (store |c_#length| |v_create_sub_list_insert_sub_~sub~0#1.base_73| (_ bv12 32)))) (or (not (bvule .cse45 (select .cse71 |c_create_sub_list_~sub#1.base|))) (= |v_create_sub_list_insert_sub_~sub~0#1.base_73| |c_create_sub_list_~sub#1.base|) (not (= (_ bv0 1) (select |c_#valid| |v_create_sub_list_insert_sub_~sub~0#1.base_73|))) (forall ((v_ArrVal_2754 (Array (_ BitVec 32) (_ BitVec 32))) (v_arrayElimCell_308 (_ BitVec 32)) (v_ArrVal_2733 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2752 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd v_arrayElimCell_308 (_ bv4 32)) (select .cse71 (select (select (store (store (store .cse48 |c_create_sub_list_insert_sub_~sub~0#1.base| v_ArrVal_2754) .cse49 v_ArrVal_2752) |v_create_sub_list_insert_sub_~sub~0#1.base_73| v_ArrVal_2733) |c_create_sub_list_~sub#1.base|) .cse50)))))))) (.cse32 (forall ((|v_create_sub_list_insert_sub_~sub~0#1.base_73| (_ BitVec 32))) (let ((.cse69 (store |c_#length| |v_create_sub_list_insert_sub_~sub~0#1.base_73| (_ bv12 32)))) (or (not (bvule .cse45 (select .cse69 |c_create_sub_list_~sub#1.base|))) (not (= (_ bv0 1) (select |c_#valid| |v_create_sub_list_insert_sub_~sub~0#1.base_73|))) (forall ((v_arrayElimCell_306 (_ BitVec 32)) (v_ArrVal_2754 (Array (_ BitVec 32) (_ BitVec 32))) (v_arrayElimCell_308 (_ BitVec 32)) (v_ArrVal_2733 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2752 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse70 (select .cse69 (select (select (store (store (store .cse48 |c_create_sub_list_insert_sub_~sub~0#1.base| v_ArrVal_2754) .cse49 v_ArrVal_2752) |v_create_sub_list_insert_sub_~sub~0#1.base_73| v_ArrVal_2733) |c_create_sub_list_~sub#1.base|) .cse50)))) (or (forall ((v_arrayElimCell_307 (_ BitVec 32))) (bvule (bvadd v_arrayElimCell_307 (_ bv4 32)) .cse70)) (bvule (bvadd v_arrayElimCell_308 (_ bv4 32)) .cse70) (bvule (bvadd v_arrayElimCell_306 (_ bv4 32)) .cse70)))))))) (.cse33 (forall ((|v_create_sub_list_insert_sub_~sub~0#1.base_73| (_ BitVec 32))) (let ((.cse67 (store |c_#length| |v_create_sub_list_insert_sub_~sub~0#1.base_73| (_ bv12 32)))) (or (not (bvule .cse45 (select .cse67 |c_create_sub_list_~sub#1.base|))) (= |v_create_sub_list_insert_sub_~sub~0#1.base_73| |c_create_sub_list_~sub#1.base|) (not (= (_ bv0 1) (select |c_#valid| |v_create_sub_list_insert_sub_~sub~0#1.base_73|))) (forall ((v_ArrVal_2754 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2733 (Array (_ BitVec 32) (_ BitVec 32))) (v_arrayElimCell_307 (_ BitVec 32)) (v_ArrVal_2752 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse68 (select .cse67 (select (select (store (store (store .cse48 |c_create_sub_list_insert_sub_~sub~0#1.base| v_ArrVal_2754) .cse49 v_ArrVal_2752) |v_create_sub_list_insert_sub_~sub~0#1.base_73| v_ArrVal_2733) |c_create_sub_list_~sub#1.base|) .cse50)))) (or (forall ((v_arrayElimCell_308 (_ BitVec 32))) (bvule (bvadd v_arrayElimCell_308 (_ bv4 32)) .cse68)) (bvule (bvadd v_arrayElimCell_307 (_ bv4 32)) .cse68)))))))) (.cse34 (or .cse5 (forall ((v_ArrVal_2754 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2733 (Array (_ BitVec 32) (_ BitVec 32))) (v_arrayElimCell_307 (_ BitVec 32)) (v_ArrVal_2752 (Array (_ BitVec 32) (_ BitVec 32))) (|v_create_sub_list_insert_sub_~sub~0#1.base_73| (_ BitVec 32))) (let ((.cse66 (store |c_#length| |v_create_sub_list_insert_sub_~sub~0#1.base_73| (_ bv12 32)))) (or (not (bvule .cse45 (select .cse66 |c_create_sub_list_~sub#1.base|))) (= |v_create_sub_list_insert_sub_~sub~0#1.base_73| |c_create_sub_list_~sub#1.base|) (bvule (bvadd v_arrayElimCell_307 (_ bv4 32)) (select .cse66 (select (select (store (store (store .cse48 |c_create_sub_list_insert_sub_~sub~0#1.base| v_ArrVal_2754) .cse49 v_ArrVal_2752) |v_create_sub_list_insert_sub_~sub~0#1.base_73| v_ArrVal_2733) |c_create_sub_list_~sub#1.base|) .cse50))) (not (= (_ bv0 1) (select |c_#valid| |v_create_sub_list_insert_sub_~sub~0#1.base_73|)))))))) (.cse10 (not (bvule .cse45 (_ bv12 32)))) (.cse11 (not (= (select |c_#valid| |c_create_sub_list_~sub#1.base|) (_ bv0 1)))) (.cse9 (store |c_#length| |c_create_sub_list_~sub#1.base| (_ bv12 32))) (.cse22 (not .cse3))) (and (or .cse0 .cse1) (or .cse2 .cse0) (or .cse3 .cse4) (or .cse5 .cse6) (or (forall ((v_arrayElimCell_306 (_ BitVec 32)) (v_arrayElimCell_327 (_ BitVec 32))) (let ((.cse7 (select .cse9 v_arrayElimCell_327))) (or (bvule (bvadd v_arrayElimCell_306 (_ bv4 32)) .cse7) (bvule .cse8 .cse7)))) .cse10 .cse11) (or .cse5 .cse0) (or .cse5 (and .cse12 .cse13 (or .cse10 (forall ((v_arrayElimCell_328 (_ BitVec 32)) (v_arrayElimCell_306 (_ BitVec 32))) (bvule (bvadd v_arrayElimCell_306 (_ bv4 32)) (select .cse9 v_arrayElimCell_328))) .cse11) .cse14 .cse15 .cse16)) (or .cse4 .cse5) (or .cse10 (and (forall ((v_arrayElimCell_306 (_ BitVec 32)) (v_arrayElimCell_331 (_ BitVec 32))) (bvule (bvadd v_arrayElimCell_306 (_ bv4 32)) (select .cse9 v_arrayElimCell_331))) (or .cse17 (and (forall ((v_arrayElimCell_306 (_ BitVec 32)) (v_arrayElimCell_330 (_ BitVec 32))) (bvule (bvadd v_arrayElimCell_306 (_ bv4 32)) (select .cse9 v_arrayElimCell_330))) (forall ((v_arrayElimCell_306 (_ BitVec 32)) (v_arrayElimCell_308 (_ BitVec 32)) (v_arrayElimCell_329 (_ BitVec 32))) (let ((.cse18 (select .cse9 v_arrayElimCell_329))) (or (bvule (bvadd v_arrayElimCell_306 (_ bv4 32)) .cse18) (bvule (bvadd v_arrayElimCell_308 (_ bv4 32)) .cse18)))))) (or (forall ((v_arrayElimCell_334 (_ BitVec 32)) (v_arrayElimCell_306 (_ BitVec 32)) (v_arrayElimCell_307 (_ BitVec 32))) (let ((.cse19 (select .cse9 v_arrayElimCell_334))) (or (bvule (bvadd v_arrayElimCell_307 (_ bv4 32)) .cse19) (bvule (bvadd v_arrayElimCell_306 (_ bv4 32)) .cse19)))) .cse3) (forall ((v_arrayElimCell_333 (_ BitVec 32)) (v_arrayElimCell_306 (_ BitVec 32)) (v_arrayElimCell_308 (_ BitVec 32)) (v_arrayElimCell_307 (_ BitVec 32))) (let ((.cse20 (select .cse9 v_arrayElimCell_333))) (or (bvule (bvadd v_arrayElimCell_307 (_ bv4 32)) .cse20) (bvule (bvadd v_arrayElimCell_306 (_ bv4 32)) .cse20) (bvule (bvadd v_arrayElimCell_308 (_ bv4 32)) .cse20)))) (or .cse5 (forall ((v_arrayElimCell_332 (_ BitVec 32)) (v_arrayElimCell_306 (_ BitVec 32)) (v_arrayElimCell_307 (_ BitVec 32))) (let ((.cse21 (select .cse9 v_arrayElimCell_332))) (or (bvule (bvadd v_arrayElimCell_307 (_ bv4 32)) .cse21) (bvule (bvadd v_arrayElimCell_306 (_ bv4 32)) .cse21)))))) .cse11) (or .cse0 .cse22) (or .cse0 (bvule (bvadd (_ bv4 32) |c_create_sub_list_insert_sub_~sub~0#1.offset|) .cse8)) (or .cse10 .cse11) (or (and (or (and .cse12 .cse13 (or .cse10 .cse11 (forall ((v_arrayElimCell_306 (_ BitVec 32)) (v_arrayElimCell_340 (_ BitVec 32))) (bvule (bvadd v_arrayElimCell_306 (_ bv4 32)) (select .cse9 v_arrayElimCell_340)))) .cse14 .cse15 .cse16) .cse5) .cse23 (or (and (or .cse5 (forall ((v_arrayElimCell_345 (_ BitVec 32)) (v_arrayElimCell_306 (_ BitVec 32)) (v_arrayElimCell_307 (_ BitVec 32))) (let ((.cse24 (select .cse9 v_arrayElimCell_345))) (or (bvule (bvadd v_arrayElimCell_306 (_ bv4 32)) .cse24) (bvule (bvadd v_arrayElimCell_307 (_ bv4 32)) .cse24))))) (forall ((v_arrayElimCell_346 (_ BitVec 32)) (v_arrayElimCell_306 (_ BitVec 32)) (v_arrayElimCell_308 (_ BitVec 32)) (v_arrayElimCell_307 (_ BitVec 32))) (let ((.cse25 (select .cse9 v_arrayElimCell_346))) (or (bvule (bvadd v_arrayElimCell_308 (_ bv4 32)) .cse25) (bvule (bvadd v_arrayElimCell_306 (_ bv4 32)) .cse25) (bvule (bvadd v_arrayElimCell_307 (_ bv4 32)) .cse25)))) (forall ((v_arrayElimCell_344 (_ BitVec 32)) (v_arrayElimCell_306 (_ BitVec 32))) (bvule (bvadd v_arrayElimCell_306 (_ bv4 32)) (select .cse9 v_arrayElimCell_344))) (or (and (forall ((v_arrayElimCell_306 (_ BitVec 32)) (v_arrayElimCell_308 (_ BitVec 32)) (v_arrayElimCell_342 (_ BitVec 32))) (let ((.cse26 (select .cse9 v_arrayElimCell_342))) (or (bvule (bvadd v_arrayElimCell_306 (_ bv4 32)) .cse26) (bvule (bvadd v_arrayElimCell_308 (_ bv4 32)) .cse26)))) (forall ((v_arrayElimCell_343 (_ BitVec 32)) (v_arrayElimCell_306 (_ BitVec 32))) (bvule (bvadd v_arrayElimCell_306 (_ bv4 32)) (select .cse9 v_arrayElimCell_343)))) .cse17) (or (forall ((v_arrayElimCell_347 (_ BitVec 32)) (v_arrayElimCell_306 (_ BitVec 32)) (v_arrayElimCell_307 (_ BitVec 32))) (let ((.cse27 (select .cse9 v_arrayElimCell_347))) (or (bvule (bvadd v_arrayElimCell_307 (_ bv4 32)) .cse27) (bvule (bvadd v_arrayElimCell_306 (_ bv4 32)) .cse27)))) .cse3)) .cse10 .cse11) .cse28 (or .cse10 .cse11 (forall ((v_arrayElimCell_306 (_ BitVec 32)) (v_arrayElimCell_305 (_ BitVec 32)) (v_arrayElimCell_341 (_ BitVec 32))) (let ((.cse29 (select .cse9 v_arrayElimCell_341))) (or (bvule (bvadd v_arrayElimCell_306 (_ bv4 32)) .cse29) (bvule (bvadd v_arrayElimCell_305 (_ bv4 32)) .cse29))))) (or (and (or (and .cse30 .cse31 (or .cse10 (forall ((v_arrayElimCell_336 (_ BitVec 32)) (v_arrayElimCell_306 (_ BitVec 32))) (bvule (bvadd v_arrayElimCell_306 (_ bv4 32)) (select .cse9 v_arrayElimCell_336))) .cse11)) .cse17) .cse32 .cse33 .cse34 (or .cse5 (and (or (forall ((v_arrayElimCell_306 (_ BitVec 32)) (v_arrayElimCell_338 (_ BitVec 32))) (bvule (bvadd v_arrayElimCell_306 (_ bv4 32)) (select .cse9 v_arrayElimCell_338))) .cse10 .cse11) .cse35)) (or .cse10 .cse11 (forall ((v_arrayElimCell_337 (_ BitVec 32)) (v_arrayElimCell_306 (_ BitVec 32))) (bvule (bvadd v_arrayElimCell_306 (_ bv4 32)) (select .cse9 v_arrayElimCell_337)))) (or .cse10 .cse11 (forall ((v_arrayElimCell_339 (_ BitVec 32)) (v_arrayElimCell_306 (_ BitVec 32)) (v_arrayElimCell_308 (_ BitVec 32))) (let ((.cse36 (select .cse9 v_arrayElimCell_339))) (or (bvule (bvadd v_arrayElimCell_306 (_ bv4 32)) .cse36) (bvule (bvadd v_arrayElimCell_308 (_ bv4 32)) .cse36)))))) .cse22) (or (and .cse37 (or (forall ((v_arrayElimCell_335 (_ BitVec 32)) (v_arrayElimCell_306 (_ BitVec 32)) (v_arrayElimCell_305 (_ BitVec 32))) (let ((.cse38 (select .cse9 v_arrayElimCell_335))) (or (bvule (bvadd v_arrayElimCell_305 (_ bv4 32)) .cse38) (bvule (bvadd v_arrayElimCell_306 (_ bv4 32)) .cse38)))) .cse10 .cse11)) .cse17) .cse39 .cse40 .cse41 .cse42 .cse43) .cse1) (or (and (or (forall ((v_arrayElimCell_322 (_ BitVec 32)) (v_arrayElimCell_306 (_ BitVec 32))) (let ((.cse44 (select .cse9 v_arrayElimCell_322))) (or (bvule (bvadd v_arrayElimCell_306 (_ bv4 32)) .cse44) (bvule .cse8 .cse44)))) .cse10 .cse11) (forall ((|v_create_sub_list_insert_sub_~sub~0#1.base_73| (_ BitVec 32))) (let ((.cse46 (store |c_#length| |v_create_sub_list_insert_sub_~sub~0#1.base_73| (_ bv12 32)))) (or (not (bvule .cse45 (select .cse46 |c_create_sub_list_~sub#1.base|))) (not (= (_ bv0 1) (select |c_#valid| |v_create_sub_list_insert_sub_~sub~0#1.base_73|))) (forall ((v_arrayElimCell_306 (_ BitVec 32)) (v_ArrVal_2754 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2733 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2752 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse47 (select .cse46 (select (select (store (store (store .cse48 |c_create_sub_list_insert_sub_~sub~0#1.base| v_ArrVal_2754) .cse49 v_ArrVal_2752) |v_create_sub_list_insert_sub_~sub~0#1.base_73| v_ArrVal_2733) |c_create_sub_list_~sub#1.base|) .cse50)))) (or (forall ((v_arrayElimCell_308 (_ BitVec 32))) (bvule (bvadd v_arrayElimCell_308 (_ bv4 32)) .cse47)) (bvule .cse8 .cse47) (bvule (bvadd v_arrayElimCell_306 (_ bv4 32)) .cse47)))))))) .cse17) (or (and (or .cse3 (forall ((v_ArrVal_2754 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2733 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2752 (Array (_ BitVec 32) (_ BitVec 32))) (|v_create_sub_list_insert_sub_~sub~0#1.base_73| (_ BitVec 32))) (let ((.cse51 (store |c_#length| |v_create_sub_list_insert_sub_~sub~0#1.base_73| (_ bv12 32)))) (or (not (bvule .cse45 (select .cse51 |c_create_sub_list_~sub#1.base|))) (= |v_create_sub_list_insert_sub_~sub~0#1.base_73| |c_create_sub_list_~sub#1.base|) (bvule .cse8 (select .cse51 (select (select (store (store (store .cse48 |c_create_sub_list_insert_sub_~sub~0#1.base| v_ArrVal_2754) .cse49 v_ArrVal_2752) |v_create_sub_list_insert_sub_~sub~0#1.base_73| v_ArrVal_2733) |c_create_sub_list_~sub#1.base|) .cse50))) (not (= (_ bv0 1) (select |c_#valid| |v_create_sub_list_insert_sub_~sub~0#1.base_73|))))))) (forall ((|v_create_sub_list_insert_sub_~sub~0#1.base_73| (_ BitVec 32))) (let ((.cse52 (store |c_#length| |v_create_sub_list_insert_sub_~sub~0#1.base_73| (_ bv12 32)))) (or (not (bvule .cse45 (select .cse52 |c_create_sub_list_~sub#1.base|))) (forall ((v_ArrVal_2754 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2733 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2752 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse53 (select .cse52 (select (select (store (store (store .cse48 |c_create_sub_list_insert_sub_~sub~0#1.base| v_ArrVal_2754) .cse49 v_ArrVal_2752) |v_create_sub_list_insert_sub_~sub~0#1.base_73| v_ArrVal_2733) |c_create_sub_list_~sub#1.base|) .cse50)))) (or (forall ((v_arrayElimCell_308 (_ BitVec 32))) (bvule (bvadd v_arrayElimCell_308 (_ bv4 32)) .cse53)) (bvule .cse8 .cse53)))) (= |v_create_sub_list_insert_sub_~sub~0#1.base_73| |c_create_sub_list_~sub#1.base|) (not (= (_ bv0 1) (select |c_#valid| |v_create_sub_list_insert_sub_~sub~0#1.base_73|))))))) .cse17) (forall ((|v_create_sub_list_insert_sub_~sub~0#1.base_73| (_ BitVec 32))) (let ((.cse54 (store |c_#length| |v_create_sub_list_insert_sub_~sub~0#1.base_73| (_ bv12 32)))) (or (not (bvule .cse45 (select .cse54 |c_create_sub_list_~sub#1.base|))) (forall ((v_arrayElimCell_306 (_ BitVec 32)) (v_ArrVal_2754 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2733 (Array (_ BitVec 32) (_ BitVec 32))) (v_arrayElimCell_307 (_ BitVec 32)) (v_ArrVal_2752 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse55 (select .cse54 (select (select (store (store (store .cse48 |c_create_sub_list_insert_sub_~sub~0#1.base| v_ArrVal_2754) .cse49 v_ArrVal_2752) |v_create_sub_list_insert_sub_~sub~0#1.base_73| v_ArrVal_2733) |c_create_sub_list_~sub#1.base|) .cse50)))) (or (forall ((v_arrayElimCell_308 (_ BitVec 32))) (bvule (bvadd v_arrayElimCell_308 (_ bv4 32)) .cse55)) (bvule .cse8 .cse55) (bvule (bvadd v_arrayElimCell_307 (_ bv4 32)) .cse55) (bvule (bvadd v_arrayElimCell_306 (_ bv4 32)) .cse55)))) (not (= (_ bv0 1) (select |c_#valid| |v_create_sub_list_insert_sub_~sub~0#1.base_73|)))))) (forall ((|v_create_sub_list_insert_sub_~sub~0#1.base_73| (_ BitVec 32))) (let ((.cse56 (store |c_#length| |v_create_sub_list_insert_sub_~sub~0#1.base_73| (_ bv12 32)))) (or (not (bvule .cse45 (select .cse56 |c_create_sub_list_~sub#1.base|))) (forall ((v_ArrVal_2754 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2733 (Array (_ BitVec 32) (_ BitVec 32))) (v_arrayElimCell_307 (_ BitVec 32)) (v_ArrVal_2752 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse57 (select .cse56 (select (select (store (store (store .cse48 |c_create_sub_list_insert_sub_~sub~0#1.base| v_ArrVal_2754) .cse49 v_ArrVal_2752) |v_create_sub_list_insert_sub_~sub~0#1.base_73| v_ArrVal_2733) |c_create_sub_list_~sub#1.base|) .cse50)))) (or (forall ((v_arrayElimCell_308 (_ BitVec 32))) (bvule (bvadd v_arrayElimCell_308 (_ bv4 32)) .cse57)) (bvule .cse8 .cse57) (bvule (bvadd v_arrayElimCell_307 (_ bv4 32)) .cse57)))) (= |v_create_sub_list_insert_sub_~sub~0#1.base_73| |c_create_sub_list_~sub#1.base|) (not (= (_ bv0 1) (select |c_#valid| |v_create_sub_list_insert_sub_~sub~0#1.base_73|)))))) (or .cse3 .cse6) (or .cse2 (and .cse23 (or .cse10 .cse11 (and (or .cse5 (forall ((v_arrayElimCell_306 (_ BitVec 32)) (v_arrayElimCell_319 (_ BitVec 32)) (v_arrayElimCell_307 (_ BitVec 32))) (let ((.cse58 (select .cse9 v_arrayElimCell_319))) (or (bvule (bvadd v_arrayElimCell_306 (_ bv4 32)) .cse58) (bvule (bvadd v_arrayElimCell_307 (_ bv4 32)) .cse58))))) (or (and (forall ((v_arrayElimCell_317 (_ BitVec 32)) (v_arrayElimCell_306 (_ BitVec 32))) (bvule (bvadd v_arrayElimCell_306 (_ bv4 32)) (select .cse9 v_arrayElimCell_317))) (forall ((v_arrayElimCell_306 (_ BitVec 32)) (v_arrayElimCell_316 (_ BitVec 32)) (v_arrayElimCell_308 (_ BitVec 32))) (let ((.cse59 (select .cse9 v_arrayElimCell_316))) (or (bvule (bvadd v_arrayElimCell_308 (_ bv4 32)) .cse59) (bvule (bvadd v_arrayElimCell_306 (_ bv4 32)) .cse59))))) .cse17) (or .cse3 (forall ((v_arrayElimCell_321 (_ BitVec 32)) (v_arrayElimCell_306 (_ BitVec 32)) (v_arrayElimCell_307 (_ BitVec 32))) (let ((.cse60 (select .cse9 v_arrayElimCell_321))) (or (bvule (bvadd v_arrayElimCell_307 (_ bv4 32)) .cse60) (bvule (bvadd v_arrayElimCell_306 (_ bv4 32)) .cse60))))) (forall ((v_arrayElimCell_306 (_ BitVec 32)) (v_arrayElimCell_308 (_ BitVec 32)) (v_arrayElimCell_307 (_ BitVec 32)) (v_arrayElimCell_320 (_ BitVec 32))) (let ((.cse61 (select .cse9 v_arrayElimCell_320))) (or (bvule (bvadd v_arrayElimCell_307 (_ bv4 32)) .cse61) (bvule (bvadd v_arrayElimCell_308 (_ bv4 32)) .cse61) (bvule (bvadd v_arrayElimCell_306 (_ bv4 32)) .cse61)))) (forall ((v_arrayElimCell_306 (_ BitVec 32)) (v_arrayElimCell_318 (_ BitVec 32))) (bvule (bvadd v_arrayElimCell_306 (_ bv4 32)) (select .cse9 v_arrayElimCell_318))))) (or (and (or .cse10 .cse11 (forall ((v_arrayElimCell_311 (_ BitVec 32)) (v_arrayElimCell_306 (_ BitVec 32))) (bvule (bvadd v_arrayElimCell_306 (_ bv4 32)) (select .cse9 v_arrayElimCell_311)))) (or .cse5 (and (or .cse10 (forall ((v_arrayElimCell_312 (_ BitVec 32)) (v_arrayElimCell_306 (_ BitVec 32))) (bvule (bvadd v_arrayElimCell_306 (_ bv4 32)) (select .cse9 v_arrayElimCell_312))) .cse11) .cse35)) .cse32 .cse33 .cse34 (or (and .cse30 .cse31 (or (forall ((v_arrayElimCell_310 (_ BitVec 32)) (v_arrayElimCell_306 (_ BitVec 32))) (bvule (bvadd v_arrayElimCell_306 (_ bv4 32)) (select .cse9 v_arrayElimCell_310))) .cse10 .cse11)) .cse17) (or .cse10 .cse11 (forall ((v_arrayElimCell_313 (_ BitVec 32)) (v_arrayElimCell_306 (_ BitVec 32)) (v_arrayElimCell_308 (_ BitVec 32))) (let ((.cse62 (select .cse9 v_arrayElimCell_313))) (or (bvule (bvadd v_arrayElimCell_306 (_ bv4 32)) .cse62) (bvule (bvadd v_arrayElimCell_308 (_ bv4 32)) .cse62)))))) .cse22) (or (and (or (forall ((v_arrayElimCell_306 (_ BitVec 32)) (v_arrayElimCell_305 (_ BitVec 32)) (v_arrayElimCell_309 (_ BitVec 32))) (let ((.cse63 (select .cse9 v_arrayElimCell_309))) (or (bvule (bvadd v_arrayElimCell_306 (_ bv4 32)) .cse63) (bvule (bvadd v_arrayElimCell_305 (_ bv4 32)) .cse63)))) .cse10 .cse11) .cse37) .cse17) .cse28 (or .cse5 (and .cse12 .cse13 .cse14 .cse15 (or .cse10 (forall ((v_arrayElimCell_314 (_ BitVec 32)) (v_arrayElimCell_306 (_ BitVec 32))) (bvule (bvadd v_arrayElimCell_306 (_ bv4 32)) (select .cse9 v_arrayElimCell_314))) .cse11) .cse16)) .cse39 .cse40 .cse41 (or .cse10 .cse11 (forall ((v_arrayElimCell_315 (_ BitVec 32)) (v_arrayElimCell_306 (_ BitVec 32)) (v_arrayElimCell_305 (_ BitVec 32))) (let ((.cse64 (select .cse9 v_arrayElimCell_315))) (or (bvule (bvadd v_arrayElimCell_305 (_ bv4 32)) .cse64) (bvule (bvadd v_arrayElimCell_306 (_ bv4 32)) .cse64))))) .cse42 .cse43)) (or (and (or (and (or (forall ((v_arrayElimCell_325 (_ BitVec 32)) (v_arrayElimCell_306 (_ BitVec 32))) (bvule (bvadd v_arrayElimCell_306 (_ bv4 32)) (select .cse9 v_arrayElimCell_325))) .cse10 .cse11) .cse35) .cse5) (or (and .cse30 .cse31 (or (forall ((v_arrayElimCell_323 (_ BitVec 32)) (v_arrayElimCell_306 (_ BitVec 32))) (bvule (bvadd v_arrayElimCell_306 (_ bv4 32)) (select .cse9 v_arrayElimCell_323))) .cse10 .cse11)) .cse17) .cse32 .cse33 .cse34 (or .cse10 (forall ((v_arrayElimCell_326 (_ BitVec 32)) (v_arrayElimCell_306 (_ BitVec 32)) (v_arrayElimCell_308 (_ BitVec 32))) (let ((.cse65 (select .cse9 v_arrayElimCell_326))) (or (bvule (bvadd v_arrayElimCell_308 (_ bv4 32)) .cse65) (bvule (bvadd v_arrayElimCell_306 (_ bv4 32)) .cse65)))) .cse11) (or .cse10 .cse11 (forall ((v_arrayElimCell_324 (_ BitVec 32)) (v_arrayElimCell_306 (_ BitVec 32))) (bvule (bvadd v_arrayElimCell_306 (_ bv4 32)) (select .cse9 v_arrayElimCell_324))))) .cse22))))))) is different from true [2022-11-18 18:31:52,348 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [59793699] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 18:31:52,348 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 18:31:52,348 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 46 [2022-11-18 18:31:52,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253133745] [2022-11-18 18:31:52,349 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 18:31:52,349 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-11-18 18:31:52,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:31:52,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-11-18 18:31:52,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=188, Invalid=3219, Unknown=19, NotChecked=114, Total=3540 [2022-11-18 18:31:52,351 INFO L87 Difference]: Start difference. First operand 218 states and 240 transitions. Second operand has 47 states, 45 states have (on average 1.4666666666666666) internal successors, (66), 41 states have internal predecessors, (66), 6 states have call successors, (6), 6 states have call predecessors, (6), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-18 18:32:15,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:32:15,735 INFO L93 Difference]: Finished difference Result 218 states and 239 transitions. [2022-11-18 18:32:15,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-11-18 18:32:15,736 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 45 states have (on average 1.4666666666666666) internal successors, (66), 41 states have internal predecessors, (66), 6 states have call successors, (6), 6 states have call predecessors, (6), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Word has length 51 [2022-11-18 18:32:15,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:32:15,738 INFO L225 Difference]: With dead ends: 218 [2022-11-18 18:32:15,738 INFO L226 Difference]: Without dead ends: 218 [2022-11-18 18:32:15,740 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 66 SyntacticMatches, 5 SemanticMatches, 82 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1676 ImplicationChecksByTransitivity, 90.1s TimeCoverageRelationStatistics Valid=472, Invalid=6292, Unknown=46, NotChecked=162, Total=6972 [2022-11-18 18:32:15,741 INFO L413 NwaCegarLoop]: 66 mSDtfsCounter, 54 mSDsluCounter, 1295 mSDsCounter, 0 mSdLazyCounter, 728 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 1361 SdHoareTripleChecker+Invalid, 1331 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 728 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 586 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2022-11-18 18:32:15,741 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 1361 Invalid, 1331 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 728 Invalid, 0 Unknown, 586 Unchecked, 4.0s Time] [2022-11-18 18:32:15,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2022-11-18 18:32:15,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 218. [2022-11-18 18:32:15,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218 states, 165 states have (on average 1.2363636363636363) internal successors, (204), 190 states have internal predecessors, (204), 14 states have call successors, (14), 14 states have call predecessors, (14), 16 states have return successors, (21), 13 states have call predecessors, (21), 14 states have call successors, (21) [2022-11-18 18:32:15,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 239 transitions. [2022-11-18 18:32:15,750 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 239 transitions. Word has length 51 [2022-11-18 18:32:15,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:32:15,750 INFO L495 AbstractCegarLoop]: Abstraction has 218 states and 239 transitions. [2022-11-18 18:32:15,751 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 45 states have (on average 1.4666666666666666) internal successors, (66), 41 states have internal predecessors, (66), 6 states have call successors, (6), 6 states have call predecessors, (6), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-18 18:32:15,751 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 239 transitions. [2022-11-18 18:32:15,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-11-18 18:32:15,752 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:32:15,752 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] [2022-11-18 18:32:15,763 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_264ad1cc-aa93-4253-9da2-8bfa37ae3af4/bin/uautomizer-TMbwUNV5ro/cvc4 --incremental --print-success --lang smt (33)] Ended with exit code 0 [2022-11-18 18:32:15,971 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_264ad1cc-aa93-4253-9da2-8bfa37ae3af4/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (32)] Forceful destruction successful, exit code 0 [2022-11-18 18:32:16,159 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_264ad1cc-aa93-4253-9da2-8bfa37ae3af4/bin/uautomizer-TMbwUNV5ro/cvc4 --incremental --print-success --lang smt,32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_264ad1cc-aa93-4253-9da2-8bfa37ae3af4/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:32:16,159 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting list_add_tailErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_sub_listErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_sub_listErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_sub_listErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-18 18:32:16,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:32:16,160 INFO L85 PathProgramCache]: Analyzing trace with hash 937684793, now seen corresponding path program 1 times [2022-11-18 18:32:16,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:32:16,160 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [782063434] [2022-11-18 18:32:16,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:32:16,160 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:32:16,161 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_264ad1cc-aa93-4253-9da2-8bfa37ae3af4/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:32:16,162 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_264ad1cc-aa93-4253-9da2-8bfa37ae3af4/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:32:16,163 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_264ad1cc-aa93-4253-9da2-8bfa37ae3af4/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (34)] Waiting until timeout for monitored process [2022-11-18 18:32:16,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:32:16,562 INFO L263 TraceCheckSpWp]: Trace formula consists of 421 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-18 18:32:16,563 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:32:17,057 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 25 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-18 18:32:17,058 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:32:17,506 INFO L321 Elim1Store]: treesize reduction 7, result has 30.0 percent of original size [2022-11-18 18:32:17,506 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 15 [2022-11-18 18:32:17,596 INFO L321 Elim1Store]: treesize reduction 7, result has 30.0 percent of original size [2022-11-18 18:32:17,596 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 15 [2022-11-18 18:32:17,649 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 25 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-18 18:32:17,649 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:32:17,649 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [782063434] [2022-11-18 18:32:17,650 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [782063434] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:32:17,650 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 18:32:17,650 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2022-11-18 18:32:17,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337218465] [2022-11-18 18:32:17,650 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 18:32:17,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-18 18:32:17,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:32:17,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-18 18:32:17,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2022-11-18 18:32:17,651 INFO L87 Difference]: Start difference. First operand 218 states and 239 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) [2022-11-18 18:32:19,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:32:19,772 INFO L93 Difference]: Finished difference Result 247 states and 267 transitions. [2022-11-18 18:32:19,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-18 18:32:19,773 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 [2022-11-18 18:32:19,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:32:19,775 INFO L225 Difference]: With dead ends: 247 [2022-11-18 18:32:19,775 INFO L226 Difference]: Without dead ends: 247 [2022-11-18 18:32:19,775 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2022-11-18 18:32:19,776 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 117 mSDsluCounter, 287 mSDsCounter, 0 mSdLazyCounter, 410 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s 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, 1.7s IncrementalHoareTripleChecker+Time [2022-11-18 18:32:19,776 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [118 Valid, 330 Invalid, 419 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 410 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-11-18 18:32:19,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2022-11-18 18:32:19,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 217. [2022-11-18 18:32:19,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217 states, 165 states have (on average 1.2242424242424241) internal successors, (202), 189 states have internal predecessors, (202), 14 states have call successors, (14), 14 states have call predecessors, (14), 16 states have return successors, (21), 13 states have call predecessors, (21), 14 states have call successors, (21) [2022-11-18 18:32:19,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 237 transitions. [2022-11-18 18:32:19,785 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 237 transitions. Word has length 54 [2022-11-18 18:32:19,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:32:19,785 INFO L495 AbstractCegarLoop]: Abstraction has 217 states and 237 transitions. [2022-11-18 18:32:19,785 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) [2022-11-18 18:32:19,786 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 237 transitions. [2022-11-18 18:32:19,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-11-18 18:32:19,786 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:32:19,787 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] [2022-11-18 18:32:19,807 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_264ad1cc-aa93-4253-9da2-8bfa37ae3af4/bin/uautomizer-TMbwUNV5ro/mathsat -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)] Ended with exit code 0 [2022-11-18 18:32:20,003 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_264ad1cc-aa93-4253-9da2-8bfa37ae3af4/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:32:20,003 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting list_add_tailErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_sub_listErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_sub_listErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_sub_listErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-18 18:32:20,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:32:20,003 INFO L85 PathProgramCache]: Analyzing trace with hash 937684794, now seen corresponding path program 1 times [2022-11-18 18:32:20,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:32:20,004 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [808375983] [2022-11-18 18:32:20,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:32:20,004 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:32:20,004 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_264ad1cc-aa93-4253-9da2-8bfa37ae3af4/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:32:20,008 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_264ad1cc-aa93-4253-9da2-8bfa37ae3af4/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:32:20,054 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_264ad1cc-aa93-4253-9da2-8bfa37ae3af4/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (35)] Waiting until timeout for monitored process [2022-11-18 18:32:20,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:32:20,525 INFO L263 TraceCheckSpWp]: Trace formula consists of 421 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-18 18:32:20,527 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:32:21,576 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 25 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-18 18:32:21,576 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:32:22,992 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 18 [2022-11-18 18:32:23,902 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 18:32:23,903 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 [2022-11-18 18:32:25,285 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 18:32:25,285 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 [2022-11-18 18:32:26,805 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 25 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-18 18:32:26,806 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:32:26,806 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [808375983] [2022-11-18 18:32:26,806 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [808375983] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:32:26,806 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 18:32:26,806 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 21 [2022-11-18 18:32:26,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229263032] [2022-11-18 18:32:26,807 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 18:32:26,807 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-18 18:32:26,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:32:26,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-18 18:32:26,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=409, Unknown=0, NotChecked=0, Total=462 [2022-11-18 18:32:26,809 INFO L87 Difference]: Start difference. First operand 217 states and 237 transitions. Second operand has 22 states, 19 states have (on average 3.6842105263157894) internal successors, (70), 18 states have internal predecessors, (70), 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) [2022-11-18 18:32:33,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:32:33,215 INFO L93 Difference]: Finished difference Result 217 states and 233 transitions. [2022-11-18 18:32:33,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-18 18:32:33,217 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 19 states have (on average 3.6842105263157894) internal successors, (70), 18 states have internal predecessors, (70), 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 [2022-11-18 18:32:33,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:32:33,219 INFO L225 Difference]: With dead ends: 217 [2022-11-18 18:32:33,219 INFO L226 Difference]: Without dead ends: 217 [2022-11-18 18:32:33,220 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 125 ImplicationChecksByTransitivity, 6.0s TimeCoverageRelationStatistics Valid=156, Invalid=966, Unknown=0, NotChecked=0, Total=1122 [2022-11-18 18:32:33,220 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 214 mSDsluCounter, 583 mSDsCounter, 0 mSdLazyCounter, 535 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 215 SdHoareTripleChecker+Valid, 633 SdHoareTripleChecker+Invalid, 609 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 535 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 58 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2022-11-18 18:32:33,220 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [215 Valid, 633 Invalid, 609 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 535 Invalid, 0 Unknown, 58 Unchecked, 3.9s Time] [2022-11-18 18:32:33,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2022-11-18 18:32:33,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 215. [2022-11-18 18:32:33,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215 states, 165 states have (on average 1.2) internal successors, (198), 187 states have internal predecessors, (198), 14 states have call successors, (14), 14 states have call predecessors, (14), 16 states have return successors, (21), 13 states have call predecessors, (21), 14 states have call successors, (21) [2022-11-18 18:32:33,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 233 transitions. [2022-11-18 18:32:33,229 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 233 transitions. Word has length 54 [2022-11-18 18:32:33,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:32:33,229 INFO L495 AbstractCegarLoop]: Abstraction has 215 states and 233 transitions. [2022-11-18 18:32:33,230 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 19 states have (on average 3.6842105263157894) internal successors, (70), 18 states have internal predecessors, (70), 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) [2022-11-18 18:32:33,230 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 233 transitions. [2022-11-18 18:32:33,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-11-18 18:32:33,231 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:32:33,231 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] [2022-11-18 18:32:33,252 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_264ad1cc-aa93-4253-9da2-8bfa37ae3af4/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (35)] Ended with exit code 0 [2022-11-18 18:32:33,447 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_264ad1cc-aa93-4253-9da2-8bfa37ae3af4/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:32:33,447 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting list_add_tailErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_sub_listErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_sub_listErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_sub_listErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-18 18:32:33,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:32:33,447 INFO L85 PathProgramCache]: Analyzing trace with hash -828042884, now seen corresponding path program 1 times [2022-11-18 18:32:33,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:32:33,448 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [235036492] [2022-11-18 18:32:33,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:32:33,448 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:32:33,448 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_264ad1cc-aa93-4253-9da2-8bfa37ae3af4/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:32:33,449 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_264ad1cc-aa93-4253-9da2-8bfa37ae3af4/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:32:33,450 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_264ad1cc-aa93-4253-9da2-8bfa37ae3af4/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (36)] Waiting until timeout for monitored process [2022-11-18 18:32:34,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:32:34,233 INFO L263 TraceCheckSpWp]: Trace formula consists of 447 conjuncts, 104 conjunts are in the unsatisfiable core [2022-11-18 18:32:34,239 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:32:34,286 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:32:34,287 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 [2022-11-18 18:32:34,402 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:32:34,537 INFO L321 Elim1Store]: treesize reduction 44, result has 34.3 percent of original size [2022-11-18 18:32:34,538 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 24 treesize of output 41 [2022-11-18 18:32:34,810 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 [2022-11-18 18:32:34,832 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:32:34,855 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 18:32:34,855 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 [2022-11-18 18:32:35,865 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-18 18:32:38,196 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 [2022-11-18 18:32:38,208 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:32:38,218 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:32:38,222 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:32:38,317 INFO L321 Elim1Store]: treesize reduction 47, result has 19.0 percent of original size [2022-11-18 18:32:38,317 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 [2022-11-18 18:32:38,346 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:32:38,357 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:32:38,446 INFO L321 Elim1Store]: treesize reduction 16, result has 48.4 percent of original size [2022-11-18 18:32:38,446 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 [2022-11-18 18:32:38,484 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-18 18:32:38,782 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 [2022-11-18 18:32:38,798 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 [2022-11-18 18:32:40,254 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-18 18:32:41,988 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_3134 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3133 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3131 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store (store (store |c_old(#memory_$Pointer$.base)| |c_list_add_tail_#in~head#1.base| v_ArrVal_3131) |c_list_add_tail_#in~new#1.base| v_ArrVal_3133) (select (select |c_old(#memory_$Pointer$.base)| |c_list_add_tail_#in~head#1.base|) (bvadd (_ bv4 32) |c_list_add_tail_#in~head#1.offset|)) v_ArrVal_3134))) (not (= |c_#StackHeapBarrier| (_ bv0 32))) (not (= (bvadd |c_#StackHeapBarrier| (_ bv1 32)) (_ bv0 32)))) is different from true [2022-11-18 18:32:42,106 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((|create_sub_list_insert_sub_~head#1.offset| (_ BitVec 32)) (v_ArrVal_3134 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3133 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3119 (_ BitVec 32)) (|create_sub_list_insert_sub_~sub~0#1.base| (_ BitVec 32)) (v_ArrVal_3121 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3131 (Array (_ BitVec 32) (_ BitVec 32)))) (and (= (_ bv0 1) (select |c_old(#valid)| |create_sub_list_insert_sub_~sub~0#1.base|)) (= |c_#memory_$Pointer$.base| (let ((.cse1 (bvadd |create_sub_list_insert_sub_~head#1.offset| (_ bv4 32)))) (let ((.cse0 (store (store |c_old(#memory_$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_3119)) |create_sub_list_insert_sub_~sub~0#1.base| v_ArrVal_3121))) (store (store (store .cse0 |c_create_sub_list_#in~sub#1.base| v_ArrVal_3131) |create_sub_list_insert_sub_~sub~0#1.base| v_ArrVal_3133) (select (select .cse0 |c_create_sub_list_#in~sub#1.base|) .cse1) v_ArrVal_3134)))) (bvult |create_sub_list_insert_sub_~sub~0#1.base| |c_#StackHeapBarrier|))) (not (= |c_#StackHeapBarrier| (_ bv0 32))) (not (= (bvadd |c_#StackHeapBarrier| (_ bv1 32)) (_ bv0 32)))) is different from true [2022-11-18 18:32:42,314 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 [2022-11-18 18:32:42,334 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:32:42,349 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:32:42,359 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:32:42,462 INFO L321 Elim1Store]: treesize reduction 47, result has 19.0 percent of original size [2022-11-18 18:32:42,462 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 [2022-11-18 18:32:42,489 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 [2022-11-18 18:32:42,560 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-18 18:32:42,560 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 [2022-11-18 18:32:43,460 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-11-18 18:32:44,110 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 4 proven. 19 refuted. 0 times theorem prover too weak. 5 trivial. 7 not checked. [2022-11-18 18:32:44,111 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:32:44,608 INFO L321 Elim1Store]: treesize reduction 7, result has 56.3 percent of original size [2022-11-18 18:32:44,608 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 [2022-11-18 18:32:47,343 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:32:47,343 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [235036492] [2022-11-18 18:32:47,343 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [235036492] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 18:32:47,343 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [824407056] [2022-11-18 18:32:47,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:32:47,344 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-18 18:32:47,344 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_264ad1cc-aa93-4253-9da2-8bfa37ae3af4/bin/uautomizer-TMbwUNV5ro/cvc4 [2022-11-18 18:32:47,345 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_264ad1cc-aa93-4253-9da2-8bfa37ae3af4/bin/uautomizer-TMbwUNV5ro/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-18 18:32:47,346 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_264ad1cc-aa93-4253-9da2-8bfa37ae3af4/bin/uautomizer-TMbwUNV5ro/cvc4 --incremental --print-success --lang smt (37)] Waiting until timeout for monitored process [2022-11-18 18:32:49,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:32:49,909 INFO L263 TraceCheckSpWp]: Trace formula consists of 447 conjuncts, 117 conjunts are in the unsatisfiable core [2022-11-18 18:32:49,916 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:32:50,260 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-18 18:32:50,261 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2022-11-18 18:32:50,731 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:32:50,783 INFO L321 Elim1Store]: treesize reduction 27, result has 20.6 percent of original size [2022-11-18 18:32:50,783 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 [2022-11-18 18:32:51,354 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 [2022-11-18 18:32:51,386 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:32:51,390 INFO L321 Elim1Store]: treesize reduction 20, result has 4.8 percent of original size [2022-11-18 18:32:51,391 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 [2022-11-18 18:32:53,970 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2022-11-18 18:32:55,787 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:32:55,788 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 [2022-11-18 18:32:55,801 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:32:55,816 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:32:55,820 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:32:55,824 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:32:55,923 INFO L321 Elim1Store]: treesize reduction 47, result has 19.0 percent of original size [2022-11-18 18:32:55,924 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 [2022-11-18 18:32:55,963 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-18 18:32:55,989 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:32:56,019 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:32:56,146 INFO L321 Elim1Store]: treesize reduction 71, result has 18.4 percent of original size [2022-11-18 18:32:56,146 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 [2022-11-18 18:32:56,885 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:32:56,889 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:32:56,900 INFO L321 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2022-11-18 18:32:56,900 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 [2022-11-18 18:32:56,909 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 [2022-11-18 18:33:00,826 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2022-11-18 18:33:07,892 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:33:07,894 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 [2022-11-18 18:33:07,921 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:33:07,954 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:33:07,961 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:33:07,969 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:33:08,105 INFO L321 Elim1Store]: treesize reduction 47, result has 19.0 percent of original size [2022-11-18 18:33:08,105 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 [2022-11-18 18:33:08,145 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:33:08,166 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:33:08,180 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:33:08,352 INFO L321 Elim1Store]: treesize reduction 54, result has 29.9 percent of original size [2022-11-18 18:33:08,353 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 [2022-11-18 18:33:08,581 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-18 18:33:11,226 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 [2022-11-18 18:33:13,597 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 9 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:33:13,598 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:33:16,808 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_3339 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3341 (_ BitVec 32)) (|v_create_sub_list_insert_sub_~sub~0#1.base_102| (_ BitVec 32)) (v_ArrVal_3338 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3337 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3340 (Array (_ BitVec 32) (_ BitVec 32)))) (or (not (= (select |c_#valid| |v_create_sub_list_insert_sub_~sub~0#1.base_102|) (_ bv0 1))) (not (bvult |v_create_sub_list_insert_sub_~sub~0#1.base_102| |c_#StackHeapBarrier|)) (= (bvadd (select (store |c_#valid| |v_create_sub_list_insert_sub_~sub~0#1.base_102| (_ bv1 1)) (select (select (let ((.cse1 (bvadd |c_ULTIMATE.start_insert_top_~top~0#1.offset| (_ bv20 32)))) (let ((.cse0 (store (store |c_#memory_$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_3341)) |v_create_sub_list_insert_sub_~sub~0#1.base_102| v_ArrVal_3339))) (store (store (store .cse0 |c_ULTIMATE.start_insert_top_~top~0#1.base| v_ArrVal_3338) |v_create_sub_list_insert_sub_~sub~0#1.base_102| v_ArrVal_3337) (select (select .cse0 |c_ULTIMATE.start_insert_top_~top~0#1.base|) .cse1) v_ArrVal_3340))) |c_ULTIMATE.start_insert_top_~head#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_insert_top_~head#1.offset|))) (_ bv1 1)) (_ bv0 1)))) is different from false [2022-11-18 18:33:16,820 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [824407056] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 18:33:16,820 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 18:33:16,820 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 39] total 65 [2022-11-18 18:33:16,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097986100] [2022-11-18 18:33:16,820 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 18:33:16,821 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 67 states [2022-11-18 18:33:16,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:33:16,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2022-11-18 18:33:16,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=273, Invalid=5077, Unknown=64, NotChecked=438, Total=5852 [2022-11-18 18:33:16,824 INFO L87 Difference]: Start difference. First operand 215 states and 233 transitions. Second operand has 67 states, 59 states have (on average 1.3898305084745763) internal successors, (82), 55 states have internal predecessors, (82), 9 states have call successors, (9), 7 states have call predecessors, (9), 7 states have return successors, (8), 8 states have call predecessors, (8), 7 states have call successors, (8) [2022-11-18 18:33:47,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:33:47,447 INFO L93 Difference]: Finished difference Result 217 states and 234 transitions. [2022-11-18 18:33:47,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-11-18 18:33:47,448 INFO L78 Accepts]: Start accepts. Automaton has has 67 states, 59 states have (on average 1.3898305084745763) internal successors, (82), 55 states have internal predecessors, (82), 9 states have call successors, (9), 7 states have call predecessors, (9), 7 states have return successors, (8), 8 states have call predecessors, (8), 7 states have call successors, (8) Word has length 56 [2022-11-18 18:33:47,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:33:47,449 INFO L225 Difference]: With dead ends: 217 [2022-11-18 18:33:47,450 INFO L226 Difference]: Without dead ends: 217 [2022-11-18 18:33:47,452 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 47 SyntacticMatches, 8 SemanticMatches, 99 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 2874 ImplicationChecksByTransitivity, 55.6s TimeCoverageRelationStatistics Valid=488, Invalid=8913, Unknown=117, NotChecked=582, Total=10100 [2022-11-18 18:33:47,453 INFO L413 NwaCegarLoop]: 70 mSDtfsCounter, 42 mSDsluCounter, 1424 mSDsCounter, 0 mSdLazyCounter, 319 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 1494 SdHoareTripleChecker+Invalid, 1716 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 319 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1387 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-11-18 18:33:47,454 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 1494 Invalid, 1716 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 319 Invalid, 0 Unknown, 1387 Unchecked, 1.7s Time] [2022-11-18 18:33:47,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2022-11-18 18:33:47,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 215. [2022-11-18 18:33:47,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215 states, 165 states have (on average 1.1939393939393939) internal successors, (197), 187 states have internal predecessors, (197), 14 states have call successors, (14), 14 states have call predecessors, (14), 16 states have return successors, (21), 13 states have call predecessors, (21), 14 states have call successors, (21) [2022-11-18 18:33:47,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 232 transitions. [2022-11-18 18:33:47,462 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 232 transitions. Word has length 56 [2022-11-18 18:33:47,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:33:47,463 INFO L495 AbstractCegarLoop]: Abstraction has 215 states and 232 transitions. [2022-11-18 18:33:47,463 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 67 states, 59 states have (on average 1.3898305084745763) internal successors, (82), 55 states have internal predecessors, (82), 9 states have call successors, (9), 7 states have call predecessors, (9), 7 states have return successors, (8), 8 states have call predecessors, (8), 7 states have call successors, (8) [2022-11-18 18:33:47,463 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 232 transitions. [2022-11-18 18:33:47,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-11-18 18:33:47,464 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:33:47,464 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] [2022-11-18 18:33:47,487 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_264ad1cc-aa93-4253-9da2-8bfa37ae3af4/bin/uautomizer-TMbwUNV5ro/mathsat -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)] Forceful destruction successful, exit code 0 [2022-11-18 18:33:47,692 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_264ad1cc-aa93-4253-9da2-8bfa37ae3af4/bin/uautomizer-TMbwUNV5ro/cvc4 --incremental --print-success --lang smt (37)] Forceful destruction successful, exit code 0 [2022-11-18 18:33:47,883 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_264ad1cc-aa93-4253-9da2-8bfa37ae3af4/bin/uautomizer-TMbwUNV5ro/mathsat -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 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_264ad1cc-aa93-4253-9da2-8bfa37ae3af4/bin/uautomizer-TMbwUNV5ro/cvc4 --incremental --print-success --lang smt [2022-11-18 18:33:47,883 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting list_add_tailErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_sub_listErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_sub_listErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_sub_listErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-18 18:33:47,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:33:47,883 INFO L85 PathProgramCache]: Analyzing trace with hash -828042883, now seen corresponding path program 1 times [2022-11-18 18:33:47,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:33:47,884 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [768453076] [2022-11-18 18:33:47,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:33:47,884 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:33:47,884 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_264ad1cc-aa93-4253-9da2-8bfa37ae3af4/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:33:47,885 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_264ad1cc-aa93-4253-9da2-8bfa37ae3af4/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:33:47,886 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_264ad1cc-aa93-4253-9da2-8bfa37ae3af4/bin/uautomizer-TMbwUNV5ro/mathsat -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)] Waiting until timeout for monitored process [2022-11-18 18:33:48,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:33:48,649 INFO L263 TraceCheckSpWp]: Trace formula consists of 447 conjuncts, 138 conjunts are in the unsatisfiable core [2022-11-18 18:33:48,656 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:33:48,704 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-18 18:33:48,730 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-18 18:33:48,898 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-18 18:33:48,899 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 18 [2022-11-18 18:33:49,009 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-18 18:33:49,009 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2022-11-18 18:33:49,265 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 15 treesize of output 11 [2022-11-18 18:33:49,277 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-18 18:33:49,288 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-18 18:33:49,298 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-18 18:33:50,486 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-18 18:33:50,495 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-18 18:33:53,254 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:33:53,259 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:33:53,264 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:33:53,265 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 18:33:53,267 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 43 [2022-11-18 18:33:53,293 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 58 treesize of output 51 [2022-11-18 18:33:53,307 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:33:53,318 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:33:53,322 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:33:53,448 INFO L321 Elim1Store]: treesize reduction 47, result has 19.0 percent of original size [2022-11-18 18:33:53,448 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 [2022-11-18 18:33:53,488 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:33:53,489 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-18 18:33:53,526 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:33:53,553 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-18 18:33:53,554 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 20 treesize of output 18 [2022-11-18 18:33:53,589 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-18 18:33:53,912 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-18 18:33:53,928 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 [2022-11-18 18:33:53,939 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-18 18:33:53,950 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-18 18:33:55,668 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-18 18:33:55,678 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-18 18:33:57,593 WARN L859 $PredicateComparison]: unable to prove that (let ((.cse0 (select (select |c_old(#memory_$Pointer$.base)| |c_list_add_tail_#in~head#1.base|) (bvadd (_ bv4 32) |c_list_add_tail_#in~head#1.offset|)))) (and (exists ((v_ArrVal_3504 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3506 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3501 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store (store (store |c_old(#memory_$Pointer$.offset)| |c_list_add_tail_#in~head#1.base| v_ArrVal_3501) |c_list_add_tail_#in~new#1.base| v_ArrVal_3504) .cse0 v_ArrVal_3506) |c_#memory_$Pointer$.offset|)) (not (= |c_#StackHeapBarrier| (_ bv0 32))) (exists ((v_ArrVal_3505 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3507 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3500 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store (store (store |c_old(#memory_$Pointer$.base)| |c_list_add_tail_#in~head#1.base| v_ArrVal_3500) |c_list_add_tail_#in~new#1.base| v_ArrVal_3505) .cse0 v_ArrVal_3507))) (not (= (bvadd |c_#StackHeapBarrier| (_ bv1 32)) (_ bv0 32))))) is different from true [2022-11-18 18:33:57,775 WARN L859 $PredicateComparison]: unable to prove that (and (not (= |c_#StackHeapBarrier| (_ bv0 32))) (not (= (bvadd |c_#StackHeapBarrier| (_ bv1 32)) (_ bv0 32))) (exists ((v_ArrVal_3505 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3504 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3507 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3506 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3479 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3501 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3500 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3480 (_ BitVec 32)) (v_ArrVal_3482 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3481 (Array (_ BitVec 32) (_ BitVec 32))) (|create_sub_list_insert_sub_~head#1.offset| (_ BitVec 32)) (v_ArrVal_3477 (_ BitVec 32)) (|create_sub_list_insert_sub_~sub~0#1.base| (_ BitVec 32))) (let ((.cse2 (bvadd |create_sub_list_insert_sub_~head#1.offset| (_ bv4 32)))) (let ((.cse1 (store (store |c_old(#memory_$Pointer$.base)| |c_create_sub_list_#in~sub#1.base| (store (store (select |c_old(#memory_$Pointer$.base)| |c_create_sub_list_#in~sub#1.base|) .cse2 |c_create_sub_list_#in~sub#1.base|) |create_sub_list_insert_sub_~head#1.offset| v_ArrVal_3477)) |create_sub_list_insert_sub_~sub~0#1.base| v_ArrVal_3482))) (let ((.cse0 (select (select .cse1 |c_create_sub_list_#in~sub#1.base|) .cse2))) (and (= (store (store (store (store (store |c_old(#memory_$Pointer$.offset)| |c_create_sub_list_#in~sub#1.base| v_ArrVal_3479) |create_sub_list_insert_sub_~sub~0#1.base| v_ArrVal_3481) |c_create_sub_list_#in~sub#1.base| v_ArrVal_3501) |create_sub_list_insert_sub_~sub~0#1.base| v_ArrVal_3504) .cse0 v_ArrVal_3506) |c_#memory_$Pointer$.offset|) (= (store |c_old(#length)| |create_sub_list_insert_sub_~sub~0#1.base| v_ArrVal_3480) |c_#length|) (= |c_#memory_$Pointer$.base| (store (store (store .cse1 |c_create_sub_list_#in~sub#1.base| v_ArrVal_3500) |create_sub_list_insert_sub_~sub~0#1.base| v_ArrVal_3505) .cse0 v_ArrVal_3507)) (= (_ 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|))))))) is different from true [2022-11-18 18:33:58,159 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:33:58,165 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:33:58,171 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:33:58,172 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 18:33:58,174 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 43 [2022-11-18 18:33:58,199 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 58 treesize of output 51 [2022-11-18 18:33:58,227 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:33:58,243 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:33:58,254 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:33:58,382 INFO L321 Elim1Store]: treesize reduction 47, result has 19.0 percent of original size [2022-11-18 18:33:58,383 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 38 treesize of output 35 [2022-11-18 18:33:58,416 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:33:58,418 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-18 18:33:58,446 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 [2022-11-18 18:33:58,506 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-18 18:33:58,506 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 [2022-11-18 18:33:59,576 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-18 18:33:59,591 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-18 18:34:00,320 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 4 proven. 19 refuted. 0 times theorem prover too weak. 5 trivial. 7 not checked. [2022-11-18 18:34:00,320 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:34:05,720 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:34:05,720 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [768453076] [2022-11-18 18:34:05,721 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [768453076] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 18:34:05,721 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1745991663] [2022-11-18 18:34:05,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:34:05,721 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-18 18:34:05,721 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_264ad1cc-aa93-4253-9da2-8bfa37ae3af4/bin/uautomizer-TMbwUNV5ro/cvc4 [2022-11-18 18:34:05,723 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_264ad1cc-aa93-4253-9da2-8bfa37ae3af4/bin/uautomizer-TMbwUNV5ro/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-18 18:34:05,724 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_264ad1cc-aa93-4253-9da2-8bfa37ae3af4/bin/uautomizer-TMbwUNV5ro/cvc4 --incremental --print-success --lang smt (39)] Waiting until timeout for monitored process [2022-11-18 18:34:09,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:34:09,367 INFO L263 TraceCheckSpWp]: Trace formula consists of 447 conjuncts, 151 conjunts are in the unsatisfiable core [2022-11-18 18:34:09,375 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:34:09,396 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-18 18:34:09,847 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-18 18:34:09,947 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:34:09,948 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-18 18:34:10,588 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 [2022-11-18 18:34:10,599 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-18 18:34:10,610 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-18 18:34:10,651 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2022-11-18 18:34:13,802 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-18 18:34:13,813 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-18 18:34:16,545 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:34:16,556 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:34:16,569 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:34:16,573 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:34:16,575 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 18:34:16,577 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 45 [2022-11-18 18:34:16,613 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:34:16,615 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 [2022-11-18 18:34:16,628 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:34:16,649 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:34:16,654 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:34:16,663 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:34:16,799 INFO L321 Elim1Store]: treesize reduction 47, result has 19.0 percent of original size [2022-11-18 18:34:16,799 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 [2022-11-18 18:34:16,831 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:34:16,832 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-18 18:34:16,880 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-18 18:34:16,881 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-11-18 18:34:16,937 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-18 18:34:17,467 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 [2022-11-18 18:34:17,477 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-18 18:34:17,487 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-18 18:34:17,513 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 7 treesize of output 5 [2022-11-18 18:34:21,905 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-18 18:34:21,915 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-18 18:34:29,598 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:34:29,609 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:34:29,622 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:34:29,626 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:34:29,628 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 18:34:29,630 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 39 [2022-11-18 18:34:29,676 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:34:29,677 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 [2022-11-18 18:34:29,695 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:34:29,716 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:34:29,721 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:34:29,731 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:34:29,881 INFO L321 Elim1Store]: treesize reduction 47, result has 19.0 percent of original size [2022-11-18 18:34:29,881 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 [2022-11-18 18:34:29,890 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-18 18:34:29,924 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:34:29,925 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-18 18:34:29,992 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-18 18:34:29,992 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-11-18 18:34:32,781 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-18 18:34:32,796 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 [2022-11-18 18:34:34,809 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 9 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:34:34,810 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:34:42,349 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1745991663] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 18:34:42,349 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 18:34:42,349 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 39] total 64 [2022-11-18 18:34:42,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019973153] [2022-11-18 18:34:42,350 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 18:34:42,350 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 65 states [2022-11-18 18:34:42,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:34:42,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2022-11-18 18:34:42,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=254, Invalid=4473, Unknown=111, NotChecked=274, Total=5112 [2022-11-18 18:34:42,352 INFO L87 Difference]: Start difference. First operand 215 states and 232 transitions. Second operand has 65 states, 57 states have (on average 1.4210526315789473) internal successors, (81), 54 states have internal predecessors, (81), 9 states have call successors, (9), 7 states have call predecessors, (9), 7 states have return successors, (8), 8 states have call predecessors, (8), 7 states have call successors, (8) [2022-11-18 18:35:24,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:35:24,795 INFO L93 Difference]: Finished difference Result 217 states and 233 transitions. [2022-11-18 18:35:24,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-11-18 18:35:24,796 INFO L78 Accepts]: Start accepts. Automaton has has 65 states, 57 states have (on average 1.4210526315789473) internal successors, (81), 54 states have internal predecessors, (81), 9 states have call successors, (9), 7 states have call predecessors, (9), 7 states have return successors, (8), 8 states have call predecessors, (8), 7 states have call successors, (8) Word has length 56 [2022-11-18 18:35:24,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:35:24,798 INFO L225 Difference]: With dead ends: 217 [2022-11-18 18:35:24,798 INFO L226 Difference]: Without dead ends: 217 [2022-11-18 18:35:24,800 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 52 SyntacticMatches, 7 SemanticMatches, 88 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 2278 ImplicationChecksByTransitivity, 75.2s TimeCoverageRelationStatistics Valid=407, Invalid=7085, Unknown=172, NotChecked=346, Total=8010 [2022-11-18 18:35:24,800 INFO L413 NwaCegarLoop]: 72 mSDtfsCounter, 24 mSDsluCounter, 1560 mSDsCounter, 0 mSdLazyCounter, 206 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 1632 SdHoareTripleChecker+Invalid, 1286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1076 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-11-18 18:35:24,801 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 1632 Invalid, 1286 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 206 Invalid, 0 Unknown, 1076 Unchecked, 2.1s Time] [2022-11-18 18:35:24,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2022-11-18 18:35:24,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 215. [2022-11-18 18:35:24,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215 states, 165 states have (on average 1.187878787878788) internal successors, (196), 187 states have internal predecessors, (196), 14 states have call successors, (14), 14 states have call predecessors, (14), 16 states have return successors, (21), 13 states have call predecessors, (21), 14 states have call successors, (21) [2022-11-18 18:35:24,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 231 transitions. [2022-11-18 18:35:24,809 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 231 transitions. Word has length 56 [2022-11-18 18:35:24,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:35:24,810 INFO L495 AbstractCegarLoop]: Abstraction has 215 states and 231 transitions. [2022-11-18 18:35:24,810 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 65 states, 57 states have (on average 1.4210526315789473) internal successors, (81), 54 states have internal predecessors, (81), 9 states have call successors, (9), 7 states have call predecessors, (9), 7 states have return successors, (8), 8 states have call predecessors, (8), 7 states have call successors, (8) [2022-11-18 18:35:24,810 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 231 transitions. [2022-11-18 18:35:24,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-11-18 18:35:24,811 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:35:24,811 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:35:24,827 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_264ad1cc-aa93-4253-9da2-8bfa37ae3af4/bin/uautomizer-TMbwUNV5ro/cvc4 --incremental --print-success --lang smt (39)] Forceful destruction successful, exit code 0 [2022-11-18 18:35:25,038 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_264ad1cc-aa93-4253-9da2-8bfa37ae3af4/bin/uautomizer-TMbwUNV5ro/mathsat -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)] Forceful destruction successful, exit code 0 [2022-11-18 18:35:25,226 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_264ad1cc-aa93-4253-9da2-8bfa37ae3af4/bin/uautomizer-TMbwUNV5ro/cvc4 --incremental --print-success --lang smt,38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_264ad1cc-aa93-4253-9da2-8bfa37ae3af4/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:35:25,227 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)] === [2022-11-18 18:35:25,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:35:25,227 INFO L85 PathProgramCache]: Analyzing trace with hash -234698876, now seen corresponding path program 1 times [2022-11-18 18:35:25,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:35:25,227 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [920991946] [2022-11-18 18:35:25,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:35:25,227 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:35:25,228 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_264ad1cc-aa93-4253-9da2-8bfa37ae3af4/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:35:25,228 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_264ad1cc-aa93-4253-9da2-8bfa37ae3af4/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:35:25,230 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_264ad1cc-aa93-4253-9da2-8bfa37ae3af4/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (40)] Waiting until timeout for monitored process [2022-11-18 18:35:26,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:35:26,195 INFO L263 TraceCheckSpWp]: Trace formula consists of 480 conjuncts, 85 conjunts are in the unsatisfiable core [2022-11-18 18:35:26,200 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:35:27,752 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-18 18:35:27,799 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-18 18:35:28,087 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:35:28,088 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-18 18:35:28,130 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:35:28,130 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-18 18:35:28,351 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-18 18:35:28,352 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2022-11-18 18:35:28,979 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-18 18:35:29,066 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-18 18:35:29,167 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-18 18:35:29,186 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-18 18:35:33,876 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 65 treesize of output 36 [2022-11-18 18:35:34,072 INFO L321 Elim1Store]: treesize reduction 46, result has 19.3 percent of original size [2022-11-18 18:35:34,073 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 96 treesize of output 128 [2022-11-18 18:35:34,093 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 132 treesize of output 96 [2022-11-18 18:35:34,122 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 24 [2022-11-18 18:35:34,196 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 [2022-11-18 18:35:35,285 INFO L321 Elim1Store]: treesize reduction 62, result has 36.1 percent of original size [2022-11-18 18:35:35,285 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 32 treesize of output 55 [2022-11-18 18:35:35,973 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 40 treesize of output 38 [2022-11-18 18:35:37,692 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 19 [2022-11-18 18:35:39,067 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 12 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:35:39,067 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:35:41,078 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_3953 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| |c_create_sub_list_insert_sub_~sub~0#1.base| v_ArrVal_3953) |c_create_sub_list_insert_sub_~head#1.base|) (bvadd (_ bv4 32) |c_create_sub_list_insert_sub_~head#1.offset|))) (_ bv1 1)))) is different from false [2022-11-18 18:35:46,397 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:35:46,397 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [920991946] [2022-11-18 18:35:46,397 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [920991946] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 18:35:46,397 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1722314330] [2022-11-18 18:35:46,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:35:46,397 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-18 18:35:46,398 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_264ad1cc-aa93-4253-9da2-8bfa37ae3af4/bin/uautomizer-TMbwUNV5ro/cvc4 [2022-11-18 18:35:46,399 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_264ad1cc-aa93-4253-9da2-8bfa37ae3af4/bin/uautomizer-TMbwUNV5ro/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-18 18:35:46,403 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_264ad1cc-aa93-4253-9da2-8bfa37ae3af4/bin/uautomizer-TMbwUNV5ro/cvc4 --incremental --print-success --lang smt (41)] Waiting until timeout for monitored process [2022-11-18 18:35:49,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:35:49,673 INFO L263 TraceCheckSpWp]: Trace formula consists of 480 conjuncts, 85 conjunts are in the unsatisfiable core [2022-11-18 18:35:49,679 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:35:50,147 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-18 18:35:50,197 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-18 18:35:50,275 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:35:50,276 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-18 18:35:50,317 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:35:50,317 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 21 treesize of output 20 [2022-11-18 18:35:50,554 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-18 18:35:50,554 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2022-11-18 18:35:50,874 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-18 18:35:50,947 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-18 18:35:51,047 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-18 18:35:51,066 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-18 18:35:53,799 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 65 treesize of output 36 [2022-11-18 18:35:54,012 INFO L321 Elim1Store]: treesize reduction 46, result has 19.3 percent of original size [2022-11-18 18:35:54,012 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 96 treesize of output 128 [2022-11-18 18:35:54,035 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 26 [2022-11-18 18:35:54,062 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:35:54,062 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 120 treesize of output 84 [2022-11-18 18:35:54,100 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 87 treesize of output 22 [2022-11-18 18:35:54,612 INFO L321 Elim1Store]: treesize reduction 62, result has 36.1 percent of original size [2022-11-18 18:35:54,612 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 32 treesize of output 55 [2022-11-18 18:35:55,424 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 40 treesize of output 38 [2022-11-18 18:35:57,167 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2022-11-18 18:35:58,413 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 12 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:35:58,413 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:35:58,600 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_4128 (Array (_ BitVec 32) (_ BitVec 32)))) (= (bvadd (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| |c_create_sub_list_insert_sub_~sub~0#1.base| v_ArrVal_4128) |c_create_sub_list_insert_sub_~head#1.base|) (bvadd (_ bv4 32) |c_create_sub_list_insert_sub_~head#1.offset|))) (_ bv1 1)) (_ bv0 1))) is different from false [2022-11-18 18:36:05,452 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1722314330] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 18:36:05,452 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 18:36:05,452 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 27] total 34 [2022-11-18 18:36:05,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325347476] [2022-11-18 18:36:05,452 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 18:36:05,453 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-11-18 18:36:05,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:36:05,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-11-18 18:36:05,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=1719, Unknown=39, NotChecked=170, Total=2070 [2022-11-18 18:36:05,454 INFO L87 Difference]: Start difference. First operand 215 states and 231 transitions. Second operand has 35 states, 31 states have (on average 1.967741935483871) internal successors, (61), 30 states have internal predecessors, (61), 6 states have call successors, (6), 5 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-18 18:36:21,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:36:21,787 INFO L93 Difference]: Finished difference Result 266 states and 287 transitions. [2022-11-18 18:36:21,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-11-18 18:36:21,788 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 31 states have (on average 1.967741935483871) internal successors, (61), 30 states have internal predecessors, (61), 6 states have call successors, (6), 5 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 57 [2022-11-18 18:36:21,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:36:21,790 INFO L225 Difference]: With dead ends: 266 [2022-11-18 18:36:21,790 INFO L226 Difference]: Without dead ends: 266 [2022-11-18 18:36:21,791 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 94 SyntacticMatches, 4 SemanticMatches, 63 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 1034 ImplicationChecksByTransitivity, 31.1s TimeCoverageRelationStatistics Valid=320, Invalid=3533, Unknown=61, NotChecked=246, Total=4160 [2022-11-18 18:36:21,792 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 155 mSDsluCounter, 792 mSDsCounter, 0 mSdLazyCounter, 683 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 157 SdHoareTripleChecker+Valid, 844 SdHoareTripleChecker+Invalid, 1285 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 683 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 586 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2022-11-18 18:36:21,792 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [157 Valid, 844 Invalid, 1285 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 683 Invalid, 0 Unknown, 586 Unchecked, 6.3s Time] [2022-11-18 18:36:21,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2022-11-18 18:36:21,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 229. [2022-11-18 18:36:21,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 229 states, 177 states have (on average 1.1807909604519775) internal successors, (209), 200 states have internal predecessors, (209), 15 states have call successors, (15), 15 states have call predecessors, (15), 17 states have return successors, (22), 13 states have call predecessors, (22), 15 states have call successors, (22) [2022-11-18 18:36:21,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 246 transitions. [2022-11-18 18:36:21,801 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 246 transitions. Word has length 57 [2022-11-18 18:36:21,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:36:21,801 INFO L495 AbstractCegarLoop]: Abstraction has 229 states and 246 transitions. [2022-11-18 18:36:21,802 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 31 states have (on average 1.967741935483871) internal successors, (61), 30 states have internal predecessors, (61), 6 states have call successors, (6), 5 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-18 18:36:21,802 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 246 transitions. [2022-11-18 18:36:21,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-11-18 18:36:21,803 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:36:21,803 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:36:21,827 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_264ad1cc-aa93-4253-9da2-8bfa37ae3af4/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (40)] Forceful destruction successful, exit code 0 [2022-11-18 18:36:22,033 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_264ad1cc-aa93-4253-9da2-8bfa37ae3af4/bin/uautomizer-TMbwUNV5ro/cvc4 --incremental --print-success --lang smt (41)] Forceful destruction successful, exit code 0 [2022-11-18 18:36:22,222 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_264ad1cc-aa93-4253-9da2-8bfa37ae3af4/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_264ad1cc-aa93-4253-9da2-8bfa37ae3af4/bin/uautomizer-TMbwUNV5ro/cvc4 --incremental --print-success --lang smt [2022-11-18 18:36:22,222 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting list_add_tailErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_sub_listErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_sub_listErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_sub_listErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-18 18:36:22,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:36:22,223 INFO L85 PathProgramCache]: Analyzing trace with hash -234698875, now seen corresponding path program 1 times [2022-11-18 18:36:22,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:36:22,223 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [312477143] [2022-11-18 18:36:22,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:36:22,224 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:36:22,224 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_264ad1cc-aa93-4253-9da2-8bfa37ae3af4/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:36:22,225 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_264ad1cc-aa93-4253-9da2-8bfa37ae3af4/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:36:22,230 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_264ad1cc-aa93-4253-9da2-8bfa37ae3af4/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (42)] Waiting until timeout for monitored process [2022-11-18 18:36:23,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:36:23,117 INFO L263 TraceCheckSpWp]: Trace formula consists of 480 conjuncts, 122 conjunts are in the unsatisfiable core [2022-11-18 18:36:23,123 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:36:23,140 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 7 [2022-11-18 18:36:23,490 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-18 18:36:23,666 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-18 18:36:24,138 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-18 18:36:24,139 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 22 [2022-11-18 18:36:24,191 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-18 18:36:25,370 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2022-11-18 18:36:25,820 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-18 18:36:25,821 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-11-18 18:36:26,367 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-18 18:36:26,401 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-18 18:36:26,857 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:36:26,858 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-18 18:36:26,933 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:36:26,934 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-18 18:36:27,210 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-18 18:36:27,210 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2022-11-18 18:36:27,356 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-18 18:36:28,040 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-18 18:36:28,115 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 16 treesize of output 18 [2022-11-18 18:36:28,267 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-18 18:36:28,293 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-18 18:36:37,150 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 120 treesize of output 79 [2022-11-18 18:36:37,172 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 100 treesize of output 71 [2022-11-18 18:36:37,409 INFO L321 Elim1Store]: treesize reduction 34, result has 24.4 percent of original size [2022-11-18 18:36:37,410 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 124 treesize of output 150 [2022-11-18 18:36:37,437 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:36:37,438 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 154 treesize of output 106 [2022-11-18 18:36:37,460 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:36:37,472 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 27 [2022-11-18 18:36:37,497 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:36:37,498 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 20 [2022-11-18 18:36:38,775 INFO L321 Elim1Store]: treesize reduction 12, result has 55.6 percent of original size [2022-11-18 18:36:38,775 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 26 treesize of output 28 [2022-11-18 18:36:38,881 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 18 treesize of output 20 [2022-11-18 18:36:39,697 INFO L321 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-11-18 18:36:39,698 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 88 treesize of output 76 [2022-11-18 18:36:39,738 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 16 treesize of output 18 [2022-11-18 18:36:41,371 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-18 18:36:41,401 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2022-11-18 18:36:42,436 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 9 proven. 31 refuted. 1 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:36:42,436 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:36:46,271 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv4 32) |c_create_sub_list_insert_sub_~head#1.offset|))) (and (forall ((v_ArrVal_4315 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.offset| |c_create_sub_list_insert_sub_~sub~0#1.base| v_ArrVal_4315) |c_create_sub_list_insert_sub_~head#1.base|) .cse1))) (bvule .cse0 (bvadd .cse0 (_ bv4 32))))) (forall ((v_ArrVal_4315 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4316 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| |c_create_sub_list_insert_sub_~sub~0#1.base| v_ArrVal_4315) |c_create_sub_list_insert_sub_~head#1.base|) .cse1) (_ bv4 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_create_sub_list_insert_sub_~sub~0#1.base| v_ArrVal_4316) |c_create_sub_list_insert_sub_~head#1.base|) .cse1)))))) is different from false [2022-11-18 18:37:05,675 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:37:05,676 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [312477143] [2022-11-18 18:37:05,676 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [312477143] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 18:37:05,676 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [353028706] [2022-11-18 18:37:05,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:37:05,676 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-18 18:37:05,676 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_264ad1cc-aa93-4253-9da2-8bfa37ae3af4/bin/uautomizer-TMbwUNV5ro/cvc4 [2022-11-18 18:37:05,677 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_264ad1cc-aa93-4253-9da2-8bfa37ae3af4/bin/uautomizer-TMbwUNV5ro/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-18 18:37:05,679 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_264ad1cc-aa93-4253-9da2-8bfa37ae3af4/bin/uautomizer-TMbwUNV5ro/cvc4 --incremental --print-success --lang smt (43)] Waiting until timeout for monitored process [2022-11-18 18:37:11,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:37:11,388 INFO L263 TraceCheckSpWp]: Trace formula consists of 480 conjuncts, 107 conjunts are in the unsatisfiable core [2022-11-18 18:37:11,400 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:37:15,944 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-18 18:37:15,996 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-18 18:37:16,059 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:37:16,060 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-18 18:37:16,102 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:37:16,103 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-18 18:37:16,199 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-18 18:37:16,576 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-18 18:37:16,576 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2022-11-18 18:37:17,041 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-18 18:37:17,081 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-18 18:37:17,147 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-18 18:37:17,167 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-18 18:37:28,629 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 [2022-11-18 18:37:29,037 INFO L321 Elim1Store]: treesize reduction 46, result has 19.3 percent of original size [2022-11-18 18:37:29,038 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 [2022-11-18 18:37:29,062 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 95 treesize of output 60 [2022-11-18 18:37:29,090 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:37:29,090 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 154 treesize of output 106 [2022-11-18 18:37:29,115 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:37:29,128 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 27 [2022-11-18 18:37:29,185 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 [2022-11-18 18:37:29,266 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:37:29,267 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 20 [2022-11-18 18:37:30,815 INFO L321 Elim1Store]: treesize reduction 12, result has 55.6 percent of original size [2022-11-18 18:37:30,815 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 28 [2022-11-18 18:37:30,893 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 18 treesize of output 20 [2022-11-18 18:37:31,945 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 38 treesize of output 36 [2022-11-18 18:37:31,968 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 16 treesize of output 18 [2022-11-18 18:37:32,623 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-18 18:37:32,656 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2022-11-18 18:37:32,828 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 4 proven. 37 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:37:32,828 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:37:33,278 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv4 32) |c_create_sub_list_insert_sub_~head#1.offset|))) (and (forall ((v_ArrVal_4507 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.offset| |c_create_sub_list_insert_sub_~sub~0#1.base| v_ArrVal_4507) |c_create_sub_list_insert_sub_~head#1.base|) .cse1))) (bvule .cse0 (bvadd (_ bv4 32) .cse0)))) (forall ((v_ArrVal_4508 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4507 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv4 32) (select (select (store |c_#memory_$Pointer$.offset| |c_create_sub_list_insert_sub_~sub~0#1.base| v_ArrVal_4507) |c_create_sub_list_insert_sub_~head#1.base|) .cse1)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_create_sub_list_insert_sub_~sub~0#1.base| v_ArrVal_4508) |c_create_sub_list_insert_sub_~head#1.base|) .cse1)))))) is different from false [2022-11-18 18:37:54,743 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [353028706] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 18:37:54,744 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 18:37:54,744 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 28] total 45 [2022-11-18 18:37:54,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862862568] [2022-11-18 18:37:54,744 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 18:37:54,744 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-11-18 18:37:54,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:37:54,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-11-18 18:37:54,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=183, Invalid=2751, Unknown=44, NotChecked=214, Total=3192 [2022-11-18 18:37:54,746 INFO L87 Difference]: Start difference. First operand 229 states and 246 transitions. Second operand has 46 states, 43 states have (on average 1.7674418604651163) internal successors, (76), 41 states have internal predecessors, (76), 6 states have call successors, (7), 6 states have call predecessors, (7), 5 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2022-11-18 18:38:50,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:38:50,608 INFO L93 Difference]: Finished difference Result 265 states and 284 transitions. [2022-11-18 18:38:50,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-11-18 18:38:50,609 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 43 states have (on average 1.7674418604651163) internal successors, (76), 41 states have internal predecessors, (76), 6 states have call successors, (7), 6 states have call predecessors, (7), 5 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) Word has length 57 [2022-11-18 18:38:50,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:38:50,611 INFO L225 Difference]: With dead ends: 265 [2022-11-18 18:38:50,611 INFO L226 Difference]: Without dead ends: 265 [2022-11-18 18:38:50,612 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 84 SyntacticMatches, 4 SemanticMatches, 86 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 1865 ImplicationChecksByTransitivity, 99.0s TimeCoverageRelationStatistics Valid=533, Invalid=6718, Unknown=67, NotChecked=338, Total=7656 [2022-11-18 18:38:50,612 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 86 mSDsluCounter, 1081 mSDsCounter, 0 mSdLazyCounter, 1016 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 1138 SdHoareTripleChecker+Invalid, 1790 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 1016 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 754 IncrementalHoareTripleChecker+Unchecked, 9.6s IncrementalHoareTripleChecker+Time [2022-11-18 18:38:50,613 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 1138 Invalid, 1790 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 1016 Invalid, 0 Unknown, 754 Unchecked, 9.6s Time] [2022-11-18 18:38:50,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2022-11-18 18:38:50,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 265. [2022-11-18 18:38:50,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 265 states, 207 states have (on average 1.1594202898550725) internal successors, (240), 231 states have internal predecessors, (240), 18 states have call successors, (18), 18 states have call predecessors, (18), 20 states have return successors, (26), 15 states have call predecessors, (26), 18 states have call successors, (26) [2022-11-18 18:38:50,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 284 transitions. [2022-11-18 18:38:50,621 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 284 transitions. Word has length 57 [2022-11-18 18:38:50,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:38:50,622 INFO L495 AbstractCegarLoop]: Abstraction has 265 states and 284 transitions. [2022-11-18 18:38:50,622 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 43 states have (on average 1.7674418604651163) internal successors, (76), 41 states have internal predecessors, (76), 6 states have call successors, (7), 6 states have call predecessors, (7), 5 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2022-11-18 18:38:50,622 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 284 transitions. [2022-11-18 18:38:50,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-11-18 18:38:50,623 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:38:50,623 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:38:50,645 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_264ad1cc-aa93-4253-9da2-8bfa37ae3af4/bin/uautomizer-TMbwUNV5ro/cvc4 --incremental --print-success --lang smt (43)] Forceful destruction successful, exit code 0 [2022-11-18 18:38:50,854 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_264ad1cc-aa93-4253-9da2-8bfa37ae3af4/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (42)] Ended with exit code 0 [2022-11-18 18:38:51,041 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_264ad1cc-aa93-4253-9da2-8bfa37ae3af4/bin/uautomizer-TMbwUNV5ro/cvc4 --incremental --print-success --lang smt,42 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_264ad1cc-aa93-4253-9da2-8bfa37ae3af4/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:38:51,041 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting create_sub_listErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_sub_listErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_sub_listErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_sub_listErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-18 18:38:51,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:38:51,042 INFO L85 PathProgramCache]: Analyzing trace with hash -1219546920, now seen corresponding path program 2 times [2022-11-18 18:38:51,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:38:51,043 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [773171766] [2022-11-18 18:38:51,043 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 18:38:51,043 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:38:51,043 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_264ad1cc-aa93-4253-9da2-8bfa37ae3af4/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:38:51,044 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_264ad1cc-aa93-4253-9da2-8bfa37ae3af4/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:38:51,050 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_264ad1cc-aa93-4253-9da2-8bfa37ae3af4/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (44)] Waiting until timeout for monitored process [2022-11-18 18:38:51,868 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 18:38:51,869 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 18:38:51,891 INFO L263 TraceCheckSpWp]: Trace formula consists of 472 conjuncts, 38 conjunts are in the unsatisfiable core [2022-11-18 18:38:51,904 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:38:51,927 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-18 18:38:51,968 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-18 18:38:52,871 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-18 18:38:53,845 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-18 18:38:53,845 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 [2022-11-18 18:38:56,386 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-18 18:38:56,386 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 15 [2022-11-18 18:38:56,404 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-18 18:38:59,110 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-18 18:38:59,110 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-11-18 18:38:59,211 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_4673 (_ BitVec 32)) (v_ArrVal_4674 (_ BitVec 32)) (v_ArrVal_4672 (_ BitVec 32)) (|v_create_sub_list_insert_sub_~sub~0#1.base_128| (_ BitVec 32)) (|v_create_sub_list_insert_sub_~sub~0#1.base_129| (_ BitVec 32)) (|create_sub_list_insert_sub_~sub~0#1.base| (_ BitVec 32))) (and (not (= |v_create_sub_list_insert_sub_~sub~0#1.base_129| |c_create_sub_list_#in~sub#1.base|)) (not (= |c_create_sub_list_#in~sub#1.base| |create_sub_list_insert_sub_~sub~0#1.base|)) (= |c_#length| (store (store (store |c_old(#length)| |v_create_sub_list_insert_sub_~sub~0#1.base_128| v_ArrVal_4672) |v_create_sub_list_insert_sub_~sub~0#1.base_129| v_ArrVal_4673) |create_sub_list_insert_sub_~sub~0#1.base| v_ArrVal_4674)) (= (_ bv0 1) (select |c_old(#valid)| |v_create_sub_list_insert_sub_~sub~0#1.base_128|)))) is different from true [2022-11-18 18:38:59,725 INFO L321 Elim1Store]: treesize reduction 33, result has 40.0 percent of original size [2022-11-18 18:38:59,726 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 2 case distinctions, treesize of input 12 treesize of output 27 [2022-11-18 18:38:59,746 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-18 18:39:00,154 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:39:00,529 INFO L321 Elim1Store]: treesize reduction 33, result has 40.0 percent of original size [2022-11-18 18:39:00,529 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 18 treesize of output 35 [2022-11-18 18:39:00,661 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-18 18:39:00,661 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 [2022-11-18 18:39:01,382 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 12 trivial. 10 not checked. [2022-11-18 18:39:01,383 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:39:04,233 INFO L321 Elim1Store]: treesize reduction 7, result has 30.0 percent of original size [2022-11-18 18:39:04,234 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 14 [2022-11-18 18:39:04,338 INFO L321 Elim1Store]: treesize reduction 7, result has 30.0 percent of original size [2022-11-18 18:39:04,338 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 15 treesize of output 14 [2022-11-18 18:39:10,455 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:39:10,456 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [773171766] [2022-11-18 18:39:10,456 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [773171766] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 18:39:10,456 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [301305982] [2022-11-18 18:39:10,456 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 18:39:10,456 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-18 18:39:10,457 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_264ad1cc-aa93-4253-9da2-8bfa37ae3af4/bin/uautomizer-TMbwUNV5ro/cvc4 [2022-11-18 18:39:10,463 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_264ad1cc-aa93-4253-9da2-8bfa37ae3af4/bin/uautomizer-TMbwUNV5ro/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-18 18:39:10,467 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_264ad1cc-aa93-4253-9da2-8bfa37ae3af4/bin/uautomizer-TMbwUNV5ro/cvc4 --incremental --print-success --lang smt (45)] Waiting until timeout for monitored process [2022-11-18 18:39:11,866 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 18:39:11,866 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 18:39:11,882 INFO L263 TraceCheckSpWp]: Trace formula consists of 472 conjuncts, 53 conjunts are in the unsatisfiable core [2022-11-18 18:39:11,885 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:39:11,902 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-18 18:39:11,934 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-18 18:39:15,200 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-18 18:39:18,066 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-18 18:39:18,067 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-11-18 18:39:20,946 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-18 18:39:20,946 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 15 [2022-11-18 18:39:20,964 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-18 18:39:23,994 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-18 18:39:23,994 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-11-18 18:39:25,134 INFO L321 Elim1Store]: treesize reduction 33, result has 40.0 percent of original size [2022-11-18 18:39:25,134 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 2 case distinctions, treesize of input 12 treesize of output 27 [2022-11-18 18:39:25,154 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-18 18:39:27,461 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:39:27,831 INFO L321 Elim1Store]: treesize reduction 33, result has 40.0 percent of original size [2022-11-18 18:39:27,831 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 18 treesize of output 35 [2022-11-18 18:39:27,958 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-18 18:39:27,958 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 [2022-11-18 18:39:28,219 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 2 proven. 36 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-18 18:39:28,219 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:39:31,978 INFO L321 Elim1Store]: treesize reduction 7, result has 30.0 percent of original size [2022-11-18 18:39:31,979 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 14 [2022-11-18 18:39:32,088 INFO L321 Elim1Store]: treesize reduction 7, result has 30.0 percent of original size [2022-11-18 18:39:32,089 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 15 treesize of output 14 [2022-11-18 18:39:36,231 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [301305982] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 18:39:36,231 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 18:39:36,231 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 19] total 25 [2022-11-18 18:39:36,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500126573] [2022-11-18 18:39:36,231 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 18:39:36,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-11-18 18:39:36,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:39:36,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-11-18 18:39:36,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=786, Unknown=11, NotChecked=56, Total=930 [2022-11-18 18:39:36,233 INFO L87 Difference]: Start difference. First operand 265 states and 284 transitions. Second operand has 26 states, 24 states have (on average 2.9583333333333335) internal successors, (71), 23 states have internal predecessors, (71), 8 states have call successors, (8), 3 states have call predecessors, (8), 5 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2022-11-18 18:39:46,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:39:46,230 INFO L93 Difference]: Finished difference Result 292 states and 327 transitions. [2022-11-18 18:39:46,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-18 18:39:46,232 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 24 states have (on average 2.9583333333333335) internal successors, (71), 23 states have internal predecessors, (71), 8 states have call successors, (8), 3 states have call predecessors, (8), 5 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) Word has length 61 [2022-11-18 18:39:46,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:39:46,234 INFO L225 Difference]: With dead ends: 292 [2022-11-18 18:39:46,234 INFO L226 Difference]: Without dead ends: 292 [2022-11-18 18:39:46,234 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 100 SyntacticMatches, 3 SemanticMatches, 34 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 237 ImplicationChecksByTransitivity, 34.7s TimeCoverageRelationStatistics Valid=117, Invalid=1064, Unknown=13, NotChecked=66, Total=1260 [2022-11-18 18:39:46,235 INFO L413 NwaCegarLoop]: 66 mSDtfsCounter, 61 mSDsluCounter, 826 mSDsCounter, 0 mSdLazyCounter, 391 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 892 SdHoareTripleChecker+Invalid, 811 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 391 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 414 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2022-11-18 18:39:46,235 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 892 Invalid, 811 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 391 Invalid, 0 Unknown, 414 Unchecked, 3.4s Time] [2022-11-18 18:39:46,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2022-11-18 18:39:46,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 271. [2022-11-18 18:39:46,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 271 states, 212 states have (on average 1.1603773584905661) internal successors, (246), 236 states have internal predecessors, (246), 19 states have call successors, (19), 18 states have call predecessors, (19), 20 states have return successors, (27), 16 states have call predecessors, (27), 19 states have call successors, (27) [2022-11-18 18:39:46,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 292 transitions. [2022-11-18 18:39:46,246 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 292 transitions. Word has length 61 [2022-11-18 18:39:46,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:39:46,246 INFO L495 AbstractCegarLoop]: Abstraction has 271 states and 292 transitions. [2022-11-18 18:39:46,246 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 24 states have (on average 2.9583333333333335) internal successors, (71), 23 states have internal predecessors, (71), 8 states have call successors, (8), 3 states have call predecessors, (8), 5 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2022-11-18 18:39:46,247 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 292 transitions. [2022-11-18 18:39:46,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-11-18 18:39:46,248 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:39:46,248 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:39:46,267 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_264ad1cc-aa93-4253-9da2-8bfa37ae3af4/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (44)] Forceful destruction successful, exit code 0 [2022-11-18 18:39:46,475 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_264ad1cc-aa93-4253-9da2-8bfa37ae3af4/bin/uautomizer-TMbwUNV5ro/cvc4 --incremental --print-success --lang smt (45)] Ended with exit code 0 [2022-11-18 18:39:46,665 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_264ad1cc-aa93-4253-9da2-8bfa37ae3af4/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,45 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_264ad1cc-aa93-4253-9da2-8bfa37ae3af4/bin/uautomizer-TMbwUNV5ro/cvc4 --incremental --print-success --lang smt [2022-11-18 18:39:46,665 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_sub_listErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_sub_listErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_sub_listErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-18 18:39:46,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:39:46,666 INFO L85 PathProgramCache]: Analyzing trace with hash 2109328892, now seen corresponding path program 1 times [2022-11-18 18:39:46,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:39:46,666 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [555326930] [2022-11-18 18:39:46,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:39:46,666 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:39:46,666 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_264ad1cc-aa93-4253-9da2-8bfa37ae3af4/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:39:46,667 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_264ad1cc-aa93-4253-9da2-8bfa37ae3af4/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:39:46,672 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_264ad1cc-aa93-4253-9da2-8bfa37ae3af4/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (46)] Waiting until timeout for monitored process [2022-11-18 18:39:47,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:39:47,188 INFO L263 TraceCheckSpWp]: Trace formula consists of 469 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-18 18:39:47,189 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:39:47,841 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-11-18 18:39:47,841 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:39:47,841 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:39:47,841 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [555326930] [2022-11-18 18:39:47,841 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [555326930] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:39:47,841 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:39:47,842 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 18:39:47,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344604659] [2022-11-18 18:39:47,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:39:47,842 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 18:39:47,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:39:47,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 18:39:47,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-18 18:39:47,843 INFO L87 Difference]: Start difference. First operand 271 states and 292 transitions. Second operand has 8 states, 7 states have (on average 5.0) internal successors, (35), 8 states have internal predecessors, (35), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-18 18:39:49,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:39:49,841 INFO L93 Difference]: Finished difference Result 298 states and 321 transitions. [2022-11-18 18:39:49,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-18 18:39:49,842 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 5.0) internal successors, (35), 8 states have internal predecessors, (35), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 63 [2022-11-18 18:39:49,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:39:49,843 INFO L225 Difference]: With dead ends: 298 [2022-11-18 18:39:49,844 INFO L226 Difference]: Without dead ends: 298 [2022-11-18 18:39:49,844 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2022-11-18 18:39:49,844 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 209 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 175 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 209 SdHoareTripleChecker+Valid, 226 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-11-18 18:39:49,845 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [209 Valid, 226 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 175 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-11-18 18:39:49,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2022-11-18 18:39:49,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 270. [2022-11-18 18:39:49,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 270 states, 212 states have (on average 1.1556603773584906) internal successors, (245), 235 states have internal predecessors, (245), 19 states have call successors, (19), 18 states have call predecessors, (19), 20 states have return successors, (27), 16 states have call predecessors, (27), 19 states have call successors, (27) [2022-11-18 18:39:49,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 291 transitions. [2022-11-18 18:39:49,854 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 291 transitions. Word has length 63 [2022-11-18 18:39:49,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:39:49,854 INFO L495 AbstractCegarLoop]: Abstraction has 270 states and 291 transitions. [2022-11-18 18:39:49,855 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 5.0) internal successors, (35), 8 states have internal predecessors, (35), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-18 18:39:49,855 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 291 transitions. [2022-11-18 18:39:49,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-11-18 18:39:49,856 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:39:49,856 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:39:49,873 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_264ad1cc-aa93-4253-9da2-8bfa37ae3af4/bin/uautomizer-TMbwUNV5ro/mathsat -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 [2022-11-18 18:39:50,074 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_264ad1cc-aa93-4253-9da2-8bfa37ae3af4/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:39:50,074 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_sub_listErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_sub_listErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_sub_listErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-18 18:39:50,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:39:50,074 INFO L85 PathProgramCache]: Analyzing trace with hash 2109328893, now seen corresponding path program 1 times [2022-11-18 18:39:50,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:39:50,075 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [580228111] [2022-11-18 18:39:50,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:39:50,075 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:39:50,075 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_264ad1cc-aa93-4253-9da2-8bfa37ae3af4/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:39:50,076 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_264ad1cc-aa93-4253-9da2-8bfa37ae3af4/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:39:50,078 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_264ad1cc-aa93-4253-9da2-8bfa37ae3af4/bin/uautomizer-TMbwUNV5ro/mathsat -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 [2022-11-18 18:39:50,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:39:50,621 INFO L263 TraceCheckSpWp]: Trace formula consists of 469 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-18 18:39:50,622 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:39:51,775 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-11-18 18:39:51,775 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:39:51,775 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:39:51,775 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [580228111] [2022-11-18 18:39:51,775 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [580228111] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:39:51,775 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:39:51,775 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 18:39:51,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150541441] [2022-11-18 18:39:51,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:39:51,776 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 18:39:51,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 18:39:51,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 18:39:51,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-18 18:39:51,777 INFO L87 Difference]: Start difference. First operand 270 states and 291 transitions. Second operand has 8 states, 7 states have (on average 5.0) internal successors, (35), 8 states have internal predecessors, (35), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-18 18:39:53,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:39:53,861 INFO L93 Difference]: Finished difference Result 269 states and 290 transitions. [2022-11-18 18:39:53,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 18:39:53,863 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 5.0) internal successors, (35), 8 states have internal predecessors, (35), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 63 [2022-11-18 18:39:53,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:39:53,864 INFO L225 Difference]: With dead ends: 269 [2022-11-18 18:39:53,865 INFO L226 Difference]: Without dead ends: 269 [2022-11-18 18:39:53,865 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2022-11-18 18:39:53,866 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 153 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 201 SdHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-18 18:39:53,866 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [153 Valid, 201 Invalid, 143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-11-18 18:39:53,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2022-11-18 18:39:53,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 269. [2022-11-18 18:39:53,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 269 states, 212 states have (on average 1.150943396226415) internal successors, (244), 234 states have internal predecessors, (244), 19 states have call successors, (19), 18 states have call predecessors, (19), 20 states have return successors, (27), 16 states have call predecessors, (27), 19 states have call successors, (27) [2022-11-18 18:39:53,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 290 transitions. [2022-11-18 18:39:53,874 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 290 transitions. Word has length 63 [2022-11-18 18:39:53,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:39:53,875 INFO L495 AbstractCegarLoop]: Abstraction has 269 states and 290 transitions. [2022-11-18 18:39:53,875 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 5.0) internal successors, (35), 8 states have internal predecessors, (35), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-18 18:39:53,875 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 290 transitions. [2022-11-18 18:39:53,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-11-18 18:39:53,876 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:39:53,877 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:39:53,899 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_264ad1cc-aa93-4253-9da2-8bfa37ae3af4/bin/uautomizer-TMbwUNV5ro/mathsat -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)] Forceful destruction successful, exit code 0 [2022-11-18 18:39:54,093 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_264ad1cc-aa93-4253-9da2-8bfa37ae3af4/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:39:54,093 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [create_sub_listErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_sub_listErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, create_sub_listErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-18 18:39:54,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:39:54,093 INFO L85 PathProgramCache]: Analyzing trace with hash -649452153, now seen corresponding path program 1 times [2022-11-18 18:39:54,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 18:39:54,094 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1107629937] [2022-11-18 18:39:54,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:39:54,094 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 18:39:54,094 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_264ad1cc-aa93-4253-9da2-8bfa37ae3af4/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 18:39:54,095 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_264ad1cc-aa93-4253-9da2-8bfa37ae3af4/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 18:39:54,097 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_264ad1cc-aa93-4253-9da2-8bfa37ae3af4/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (48)] Waiting until timeout for monitored process [2022-11-18 18:39:55,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:39:55,154 INFO L263 TraceCheckSpWp]: Trace formula consists of 478 conjuncts, 143 conjunts are in the unsatisfiable core [2022-11-18 18:39:55,161 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:39:55,322 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:39:55,323 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 [2022-11-18 18:39:55,592 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:39:55,866 INFO L321 Elim1Store]: treesize reduction 44, result has 34.3 percent of original size [2022-11-18 18:39:55,867 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 [2022-11-18 18:39:56,503 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 [2022-11-18 18:39:56,525 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 [2022-11-18 18:39:56,566 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:39:56,612 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 18:39:56,613 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 [2022-11-18 18:39:58,613 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-18 18:40:03,635 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:40:03,645 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:40:03,657 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:40:03,659 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 18:40:03,661 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 45 [2022-11-18 18:40:03,714 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 [2022-11-18 18:40:03,735 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:40:03,755 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:40:03,764 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:40:03,950 INFO L321 Elim1Store]: treesize reduction 47, result has 19.0 percent of original size [2022-11-18 18:40:03,950 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 [2022-11-18 18:40:04,001 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:40:04,017 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:40:04,250 INFO L321 Elim1Store]: treesize reduction 16, result has 48.4 percent of original size [2022-11-18 18:40:04,251 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 [2022-11-18 18:40:04,333 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 7 treesize of output 3 [2022-11-18 18:40:04,926 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 [2022-11-18 18:40:04,949 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 [2022-11-18 18:40:04,975 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 [2022-11-18 18:40:07,861 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-18 18:40:10,642 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:40:10,652 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:40:10,662 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:40:10,664 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 18:40:10,667 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 45 [2022-11-18 18:40:10,697 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 [2022-11-18 18:40:10,720 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:40:10,754 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:40:10,762 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:40:10,955 INFO L321 Elim1Store]: treesize reduction 47, result has 19.0 percent of original size [2022-11-18 18:40:10,955 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 [2022-11-18 18:40:11,099 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-18 18:40:11,099 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 [2022-11-18 18:40:11,256 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-18 18:40:12,037 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 [2022-11-18 18:40:12,063 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 [2022-11-18 18:40:15,992 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 29 treesize of output 19 [2022-11-18 18:40:17,278 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 93 treesize of output 63 [2022-11-18 18:40:17,300 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 69 treesize of output 39 [2022-11-18 18:40:19,327 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 43 treesize of output 23 [2022-11-18 18:40:20,556 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 4 proven. 20 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-11-18 18:40:20,556 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:40:22,775 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 60 treesize of output 56 [2022-11-18 18:40:23,667 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 18:40:23,668 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1107629937] [2022-11-18 18:40:23,668 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1107629937] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 18:40:23,668 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2116073634] [2022-11-18 18:40:23,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:40:23,668 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-18 18:40:23,668 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_264ad1cc-aa93-4253-9da2-8bfa37ae3af4/bin/uautomizer-TMbwUNV5ro/cvc4 [2022-11-18 18:40:23,669 INFO L229 MonitoredProcess]: Starting monitored process 49 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_264ad1cc-aa93-4253-9da2-8bfa37ae3af4/bin/uautomizer-TMbwUNV5ro/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-18 18:40:23,671 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_264ad1cc-aa93-4253-9da2-8bfa37ae3af4/bin/uautomizer-TMbwUNV5ro/cvc4 --incremental --print-success --lang smt (49)] Waiting until timeout for monitored process [2022-11-18 18:40:27,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:40:27,530 INFO L263 TraceCheckSpWp]: Trace formula consists of 478 conjuncts, 152 conjunts are in the unsatisfiable core [2022-11-18 18:40:27,538 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:40:28,442 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-18 18:40:29,788 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-18 18:40:29,807 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 [2022-11-18 18:40:29,841 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2022-11-18 18:40:34,785 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-18 18:40:38,762 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:40:38,782 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:40:38,800 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:40:38,808 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:40:38,811 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 18:40:38,812 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 47 [2022-11-18 18:40:38,882 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:40:38,904 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:40:38,906 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 71 treesize of output 65 [2022-11-18 18:40:38,929 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:40:38,965 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:40:38,979 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:40:38,988 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:40:39,195 INFO L321 Elim1Store]: treesize reduction 47, result has 19.0 percent of original size [2022-11-18 18:40:39,195 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 47 treesize of output 42 [2022-11-18 18:40:39,337 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-18 18:40:39,337 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-11-18 18:40:39,403 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-18 18:40:40,555 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 7 treesize of output 5 [2022-11-18 18:40:40,646 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 [2022-11-18 18:40:40,666 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-18 18:40:48,260 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2022-11-18 18:40:58,279 WARN L859 $PredicateComparison]: unable to prove that (let ((.cse0 (select (select |c_old(#memory_$Pointer$.base)| |c_list_add_tail_#in~head#1.base|) (bvadd (_ bv4 32) |c_list_add_tail_#in~head#1.offset|)))) (and (exists ((|v_create_sub_list_insert_sub_~sub~0#1.base_BEFORE_CALL_32| (_ BitVec 32))) (and (= (_ bv0 1) (bvadd (select |c_#valid| |v_create_sub_list_insert_sub_~sub~0#1.base_BEFORE_CALL_32|) (_ bv1 1))) (bvult |v_create_sub_list_insert_sub_~sub~0#1.base_BEFORE_CALL_32| |c_#StackHeapBarrier|))) (exists ((v_ArrVal_5439 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5443 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5444 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store (store (store |c_old(#memory_$Pointer$.base)| |c_list_add_tail_#in~head#1.base| v_ArrVal_5439) |c_list_add_tail_#in~new#1.base| v_ArrVal_5443) .cse0 v_ArrVal_5444) |c_#memory_$Pointer$.base|)) (exists ((|v_create_sub_list_insert_sub_~sub~0#1.base_153| (_ BitVec 32)) (|v_ULTIMATE.start_insert_top_~top~0#1.base_BEFORE_CALL_54| (_ BitVec 32))) (and (bvult |v_create_sub_list_insert_sub_~sub~0#1.base_153| |c_#StackHeapBarrier|) (not (= |v_create_sub_list_insert_sub_~sub~0#1.base_153| |v_ULTIMATE.start_insert_top_~top~0#1.base_BEFORE_CALL_54|)) (bvult |v_ULTIMATE.start_insert_top_~top~0#1.base_BEFORE_CALL_54| |c_#StackHeapBarrier|))) (not (= (bvadd |c_#StackHeapBarrier| (_ bv1 32)) (_ bv0 32))) (exists ((v_ArrVal_5438 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5445 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5442 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store (store (store |c_old(#memory_$Pointer$.offset)| |c_list_add_tail_#in~head#1.base| v_ArrVal_5438) |c_list_add_tail_#in~new#1.base| v_ArrVal_5442) .cse0 v_ArrVal_5445) |c_#memory_$Pointer$.offset|)))) is different from true [2022-11-18 18:41:00,864 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:41:00,887 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:41:00,907 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:41:00,915 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:41:00,918 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 18:41:00,918 INFO L217 Elim1Store]: Index analysis took 141 ms [2022-11-18 18:41:00,919 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 41 [2022-11-18 18:41:00,982 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:41:00,999 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:41:01,000 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 61 treesize of output 59 [2022-11-18 18:41:01,033 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:41:01,063 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:41:01,079 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:41:01,087 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 18:41:01,312 INFO L321 Elim1Store]: treesize reduction 47, result has 19.0 percent of original size [2022-11-18 18:41:01,312 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 43 treesize of output 38 [2022-11-18 18:41:01,535 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-18 18:41:01,536 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 19 treesize of output 27 [2022-11-18 18:41:01,845 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-18 18:41:03,289 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 [2022-11-18 18:41:03,323 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