./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 b5237d83 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d38ee9de-3e9e-4c83-8138-dfcf109b4533/bin/uautomizer-vX5HgA9Q3a/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d38ee9de-3e9e-4c83-8138-dfcf109b4533/bin/uautomizer-vX5HgA9Q3a/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d38ee9de-3e9e-4c83-8138-dfcf109b4533/bin/uautomizer-vX5HgA9Q3a/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d38ee9de-3e9e-4c83-8138-dfcf109b4533/bin/uautomizer-vX5HgA9Q3a/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety/test-0102-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d38ee9de-3e9e-4c83-8138-dfcf109b4533/bin/uautomizer-vX5HgA9Q3a/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d38ee9de-3e9e-4c83-8138-dfcf109b4533/bin/uautomizer-vX5HgA9Q3a --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-b5237d8 [2022-11-21 13:58:19,688 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-21 13:58:19,691 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-21 13:58:19,732 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-21 13:58:19,735 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-21 13:58:19,740 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-21 13:58:19,744 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-21 13:58:19,748 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-21 13:58:19,751 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-21 13:58:19,759 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-21 13:58:19,761 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-21 13:58:19,764 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-21 13:58:19,765 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-21 13:58:19,768 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-21 13:58:19,770 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-21 13:58:19,774 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-21 13:58:19,776 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-21 13:58:19,777 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-21 13:58:19,779 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-21 13:58:19,787 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-21 13:58:19,789 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-21 13:58:19,792 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-21 13:58:19,794 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-21 13:58:19,795 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-21 13:58:19,808 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-21 13:58:19,809 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-21 13:58:19,809 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-21 13:58:19,811 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-21 13:58:19,812 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-21 13:58:19,813 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-21 13:58:19,814 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-21 13:58:19,815 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-21 13:58:19,818 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-21 13:58:19,820 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-21 13:58:19,822 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-21 13:58:19,823 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-21 13:58:19,824 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-21 13:58:19,824 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-21 13:58:19,825 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-21 13:58:19,827 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-21 13:58:19,828 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-21 13:58:19,829 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d38ee9de-3e9e-4c83-8138-dfcf109b4533/bin/uautomizer-vX5HgA9Q3a/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-11-21 13:58:19,883 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-21 13:58:19,884 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-21 13:58:19,885 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-21 13:58:19,885 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-21 13:58:19,886 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-21 13:58:19,886 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-21 13:58:19,888 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-21 13:58:19,888 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-21 13:58:19,888 INFO L138 SettingsManager]: * Use SBE=true [2022-11-21 13:58:19,889 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-21 13:58:19,890 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-21 13:58:19,890 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-21 13:58:19,891 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-21 13:58:19,891 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-21 13:58:19,891 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-21 13:58:19,892 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-21 13:58:19,892 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-21 13:58:19,892 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-21 13:58:19,893 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-21 13:58:19,893 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-21 13:58:19,893 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-21 13:58:19,893 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-21 13:58:19,894 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-21 13:58:19,894 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-21 13:58:19,894 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-21 13:58:19,895 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 13:58:19,895 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-21 13:58:19,895 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-21 13:58:19,896 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-21 13:58:19,897 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-21 13:58:19,897 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_d38ee9de-3e9e-4c83-8138-dfcf109b4533/bin/uautomizer-vX5HgA9Q3a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d38ee9de-3e9e-4c83-8138-dfcf109b4533/bin/uautomizer-vX5HgA9Q3a Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d10910cb8c44ec8f982d35122d9e66670129ee7c874265953b685f7f63a30072 [2022-11-21 13:58:20,261 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-21 13:58:20,308 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-21 13:58:20,312 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-21 13:58:20,314 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-21 13:58:20,314 INFO L275 PluginConnector]: CDTParser initialized [2022-11-21 13:58:20,316 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d38ee9de-3e9e-4c83-8138-dfcf109b4533/bin/uautomizer-vX5HgA9Q3a/../../sv-benchmarks/c/memsafety/test-0102-2.i [2022-11-21 13:58:23,878 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-21 13:58:24,203 INFO L351 CDTParser]: Found 1 translation units. [2022-11-21 13:58:24,204 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d38ee9de-3e9e-4c83-8138-dfcf109b4533/sv-benchmarks/c/memsafety/test-0102-2.i [2022-11-21 13:58:24,219 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d38ee9de-3e9e-4c83-8138-dfcf109b4533/bin/uautomizer-vX5HgA9Q3a/data/d51bfc07b/81bba000d2e04c8bba514e0373a43384/FLAG987bd91e6 [2022-11-21 13:58:24,237 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d38ee9de-3e9e-4c83-8138-dfcf109b4533/bin/uautomizer-vX5HgA9Q3a/data/d51bfc07b/81bba000d2e04c8bba514e0373a43384 [2022-11-21 13:58:24,240 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-21 13:58:24,242 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-21 13:58:24,246 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-21 13:58:24,247 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-21 13:58:24,251 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-21 13:58:24,252 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:58:24" (1/1) ... [2022-11-21 13:58:24,254 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@95ccb37 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:58:24, skipping insertion in model container [2022-11-21 13:58:24,254 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:58:24" (1/1) ... [2022-11-21 13:58:24,263 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-21 13:58:24,310 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-21 13:58:24,805 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 13:58:24,823 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) [2022-11-21 13:58:24,824 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@39ff70e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:58:24, skipping insertion in model container [2022-11-21 13:58:24,824 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-21 13:58:24,825 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2022-11-21 13:58:24,827 INFO L158 Benchmark]: Toolchain (without parser) took 584.16ms. Allocated memory is still 199.2MB. Free memory was 150.4MB in the beginning and 139.0MB in the end (delta: 11.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-21 13:58:24,828 INFO L158 Benchmark]: CDTParser took 0.33ms. Allocated memory is still 151.0MB. Free memory is still 91.4MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-21 13:58:24,829 INFO L158 Benchmark]: CACSL2BoogieTranslator took 578.45ms. Allocated memory is still 199.2MB. Free memory was 150.4MB in the beginning and 139.0MB in the end (delta: 11.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-21 13:58:24,831 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33ms. Allocated memory is still 151.0MB. Free memory is still 91.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 578.45ms. Allocated memory is still 199.2MB. Free memory was 150.4MB in the beginning and 139.0MB in the end (delta: 11.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 551]: Unsupported Syntax Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d38ee9de-3e9e-4c83-8138-dfcf109b4533/bin/uautomizer-vX5HgA9Q3a/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d38ee9de-3e9e-4c83-8138-dfcf109b4533/bin/uautomizer-vX5HgA9Q3a/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d38ee9de-3e9e-4c83-8138-dfcf109b4533/bin/uautomizer-vX5HgA9Q3a/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d38ee9de-3e9e-4c83-8138-dfcf109b4533/bin/uautomizer-vX5HgA9Q3a/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety/test-0102-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d38ee9de-3e9e-4c83-8138-dfcf109b4533/bin/uautomizer-vX5HgA9Q3a/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d38ee9de-3e9e-4c83-8138-dfcf109b4533/bin/uautomizer-vX5HgA9Q3a --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-b5237d8 [2022-11-21 13:58:27,708 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-21 13:58:27,710 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-21 13:58:27,753 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-21 13:58:27,753 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-21 13:58:27,755 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-21 13:58:27,756 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-21 13:58:27,762 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-21 13:58:27,767 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-21 13:58:27,774 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-21 13:58:27,776 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-21 13:58:27,780 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-21 13:58:27,781 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-21 13:58:27,784 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-21 13:58:27,788 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-21 13:58:27,794 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-21 13:58:27,795 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-21 13:58:27,796 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-21 13:58:27,798 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-21 13:58:27,800 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-21 13:58:27,801 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-21 13:58:27,804 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-21 13:58:27,805 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-21 13:58:27,807 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-21 13:58:27,810 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-21 13:58:27,811 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-21 13:58:27,811 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-21 13:58:27,813 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-21 13:58:27,813 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-21 13:58:27,814 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-21 13:58:27,825 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-21 13:58:27,827 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-21 13:58:27,829 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-21 13:58:27,845 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-21 13:58:27,847 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-21 13:58:27,847 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-21 13:58:27,848 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-21 13:58:27,849 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-21 13:58:27,849 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-21 13:58:27,850 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-21 13:58:27,851 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-21 13:58:27,852 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d38ee9de-3e9e-4c83-8138-dfcf109b4533/bin/uautomizer-vX5HgA9Q3a/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2022-11-21 13:58:27,900 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-21 13:58:27,901 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-21 13:58:27,902 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-21 13:58:27,903 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-21 13:58:27,904 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-21 13:58:27,904 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-21 13:58:27,905 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-21 13:58:27,905 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-21 13:58:27,905 INFO L138 SettingsManager]: * Use SBE=true [2022-11-21 13:58:27,906 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-21 13:58:27,907 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-21 13:58:27,907 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-21 13:58:27,907 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-21 13:58:27,908 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-21 13:58:27,908 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-21 13:58:27,908 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-21 13:58:27,908 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-21 13:58:27,909 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-21 13:58:27,909 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-21 13:58:27,909 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-21 13:58:27,909 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-21 13:58:27,910 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-21 13:58:27,910 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-21 13:58:27,910 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-21 13:58:27,910 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-21 13:58:27,911 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-21 13:58:27,911 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-21 13:58:27,911 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 13:58:27,912 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-21 13:58:27,912 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-21 13:58:27,912 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-11-21 13:58:27,912 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-21 13:58:27,913 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-21 13:58:27,913 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_d38ee9de-3e9e-4c83-8138-dfcf109b4533/bin/uautomizer-vX5HgA9Q3a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d38ee9de-3e9e-4c83-8138-dfcf109b4533/bin/uautomizer-vX5HgA9Q3a Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d10910cb8c44ec8f982d35122d9e66670129ee7c874265953b685f7f63a30072 [2022-11-21 13:58:28,471 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-21 13:58:28,513 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-21 13:58:28,516 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-21 13:58:28,518 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-21 13:58:28,519 INFO L275 PluginConnector]: CDTParser initialized [2022-11-21 13:58:28,520 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d38ee9de-3e9e-4c83-8138-dfcf109b4533/bin/uautomizer-vX5HgA9Q3a/../../sv-benchmarks/c/memsafety/test-0102-2.i [2022-11-21 13:58:32,324 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-21 13:58:32,694 INFO L351 CDTParser]: Found 1 translation units. [2022-11-21 13:58:32,695 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d38ee9de-3e9e-4c83-8138-dfcf109b4533/sv-benchmarks/c/memsafety/test-0102-2.i [2022-11-21 13:58:32,710 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d38ee9de-3e9e-4c83-8138-dfcf109b4533/bin/uautomizer-vX5HgA9Q3a/data/e5dac51e7/3db88243776845e08332945f3566d28b/FLAG9ff11c93e [2022-11-21 13:58:32,920 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d38ee9de-3e9e-4c83-8138-dfcf109b4533/bin/uautomizer-vX5HgA9Q3a/data/e5dac51e7/3db88243776845e08332945f3566d28b [2022-11-21 13:58:32,922 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-21 13:58:32,923 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-21 13:58:32,925 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-21 13:58:32,925 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-21 13:58:32,932 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-21 13:58:32,933 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:58:32" (1/1) ... [2022-11-21 13:58:32,934 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ec94e66 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:58:32, skipping insertion in model container [2022-11-21 13:58:32,935 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:58:32" (1/1) ... [2022-11-21 13:58:32,944 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-21 13:58:33,013 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-21 13:58:33,445 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 13:58:33,468 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-11-21 13:58:33,482 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-21 13:58:33,556 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 13:58:33,564 INFO L203 MainTranslator]: Completed pre-run [2022-11-21 13:58:33,626 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 13:58:33,702 INFO L208 MainTranslator]: Completed translation [2022-11-21 13:58:33,703 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:58:33 WrapperNode [2022-11-21 13:58:33,703 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-21 13:58:33,704 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-21 13:58:33,704 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-21 13:58:33,704 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-21 13:58:33,713 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:58:33" (1/1) ... [2022-11-21 13:58:33,748 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:58:33" (1/1) ... [2022-11-21 13:58:33,801 INFO L138 Inliner]: procedures = 136, calls = 37, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 101 [2022-11-21 13:58:33,802 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-21 13:58:33,802 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-21 13:58:33,802 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-21 13:58:33,808 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-21 13:58:33,819 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:58:33" (1/1) ... [2022-11-21 13:58:33,819 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:58:33" (1/1) ... [2022-11-21 13:58:33,839 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:58:33" (1/1) ... [2022-11-21 13:58:33,840 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:58:33" (1/1) ... [2022-11-21 13:58:33,850 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:58:33" (1/1) ... [2022-11-21 13:58:33,869 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:58:33" (1/1) ... [2022-11-21 13:58:33,871 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:58:33" (1/1) ... [2022-11-21 13:58:33,873 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:58:33" (1/1) ... [2022-11-21 13:58:33,877 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-21 13:58:33,878 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-21 13:58:33,878 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-21 13:58:33,878 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-21 13:58:33,892 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:58:33" (1/1) ... [2022-11-21 13:58:33,900 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 13:58:33,915 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d38ee9de-3e9e-4c83-8138-dfcf109b4533/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 13:58:33,933 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d38ee9de-3e9e-4c83-8138-dfcf109b4533/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-21 13:58:33,959 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d38ee9de-3e9e-4c83-8138-dfcf109b4533/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-21 13:58:33,991 INFO L130 BoogieDeclarations]: Found specification of procedure list_add_tail [2022-11-21 13:58:33,992 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add_tail [2022-11-21 13:58:33,992 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-21 13:58:33,992 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-21 13:58:33,992 INFO L130 BoogieDeclarations]: Found specification of procedure create_sub_list [2022-11-21 13:58:33,992 INFO L138 BoogieDeclarations]: Found implementation of procedure create_sub_list [2022-11-21 13:58:33,992 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-21 13:58:33,993 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-21 13:58:33,993 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-21 13:58:33,993 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-11-21 13:58:33,993 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-21 13:58:33,993 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-21 13:58:33,994 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-21 13:58:33,994 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-21 13:58:33,994 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-21 13:58:34,184 INFO L235 CfgBuilder]: Building ICFG [2022-11-21 13:58:34,187 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-21 13:58:34,787 INFO L276 CfgBuilder]: Performing block encoding [2022-11-21 13:58:34,795 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-21 13:58:34,795 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-11-21 13:58:34,797 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:58:34 BoogieIcfgContainer [2022-11-21 13:58:34,797 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-21 13:58:34,808 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-21 13:58:34,808 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-21 13:58:34,823 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-21 13:58:34,825 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 01:58:32" (1/3) ... [2022-11-21 13:58:34,826 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57df583e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:58:34, skipping insertion in model container [2022-11-21 13:58:34,828 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:58:33" (2/3) ... [2022-11-21 13:58:34,829 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57df583e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:58:34, skipping insertion in model container [2022-11-21 13:58:34,830 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:58:34" (3/3) ... [2022-11-21 13:58:34,832 INFO L112 eAbstractionObserver]: Analyzing ICFG test-0102-2.i [2022-11-21 13:58:34,858 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-21 13:58:34,859 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 31 error locations. [2022-11-21 13:58:34,930 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-21 13:58:34,939 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;@6badc733, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-21 13:58:34,939 INFO L358 AbstractCegarLoop]: Starting to check reachability of 31 error locations. [2022-11-21 13:58:34,945 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) [2022-11-21 13:58:34,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-21 13:58:34,954 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:58:34,955 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-21 13:58:34,955 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)] === [2022-11-21 13:58:34,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:58:34,962 INFO L85 PathProgramCache]: Analyzing trace with hash 60205689, now seen corresponding path program 1 times [2022-11-21 13:58:34,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 13:58:34,979 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [737827410] [2022-11-21 13:58:34,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:58:34,980 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 [2022-11-21 13:58:34,980 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d38ee9de-3e9e-4c83-8138-dfcf109b4533/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 13:58:34,986 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d38ee9de-3e9e-4c83-8138-dfcf109b4533/bin/uautomizer-vX5HgA9Q3a/mathsat -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) [2022-11-21 13:58:34,995 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d38ee9de-3e9e-4c83-8138-dfcf109b4533/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 13:58:35,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:58:35,139 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 1 conjunts are in the unsatisfiable core [2022-11-21 13:58:35,143 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 13:58:35,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:58:35,168 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 13:58:35,169 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 13:58:35,171 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [737827410] [2022-11-21 13:58:35,172 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [737827410] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:58:35,172 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:58:35,172 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-21 13:58:35,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255361127] [2022-11-21 13:58:35,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:58:35,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-21 13:58:35,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 13:58:35,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-21 13:58:35,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-21 13:58:35,250 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) [2022-11-21 13:58:35,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:58:35,278 INFO L93 Difference]: Finished difference Result 83 states and 88 transitions. [2022-11-21 13:58:35,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-21 13:58:35,281 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 [2022-11-21 13:58:35,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:58:35,289 INFO L225 Difference]: With dead ends: 83 [2022-11-21 13:58:35,289 INFO L226 Difference]: Without dead ends: 81 [2022-11-21 13:58:35,291 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 [2022-11-21 13:58:35,296 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 [2022-11-21 13:58:35,298 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] [2022-11-21 13:58:35,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2022-11-21 13:58:35,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2022-11-21 13:58:35,346 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) [2022-11-21 13:58:35,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 86 transitions. [2022-11-21 13:58:35,350 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 86 transitions. Word has length 5 [2022-11-21 13:58:35,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:58:35,351 INFO L495 AbstractCegarLoop]: Abstraction has 81 states and 86 transitions. [2022-11-21 13:58:35,351 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) [2022-11-21 13:58:35,351 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 86 transitions. [2022-11-21 13:58:35,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-21 13:58:35,352 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:58:35,352 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:58:35,371 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d38ee9de-3e9e-4c83-8138-dfcf109b4533/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 13:58:35,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d38ee9de-3e9e-4c83-8138-dfcf109b4533/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 13:58:35,571 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)] === [2022-11-21 13:58:35,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:58:35,572 INFO L85 PathProgramCache]: Analyzing trace with hash 2005144647, now seen corresponding path program 1 times [2022-11-21 13:58:35,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 13:58:35,573 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [192879592] [2022-11-21 13:58:35,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:58:35,573 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 [2022-11-21 13:58:35,574 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d38ee9de-3e9e-4c83-8138-dfcf109b4533/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 13:58:35,575 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d38ee9de-3e9e-4c83-8138-dfcf109b4533/bin/uautomizer-vX5HgA9Q3a/mathsat -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) [2022-11-21 13:58:35,577 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d38ee9de-3e9e-4c83-8138-dfcf109b4533/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 13:58:35,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:58:35,690 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-21 13:58:35,693 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 13:58:35,753 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 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 [2022-11-21 13:58:35,811 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:58:35,811 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 13:58:35,811 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 13:58:35,812 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [192879592] [2022-11-21 13:58:35,812 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [192879592] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:58:35,812 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:58:35,813 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-21 13:58:35,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881038654] [2022-11-21 13:58:35,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:58:35,815 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-21 13:58:35,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 13:58:35,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-21 13:58:35,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-21 13:58:35,817 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) [2022-11-21 13:58:36,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:58:36,203 INFO L93 Difference]: Finished difference Result 108 states and 115 transitions. [2022-11-21 13:58:36,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 13:58:36,204 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 [2022-11-21 13:58:36,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:58:36,205 INFO L225 Difference]: With dead ends: 108 [2022-11-21 13:58:36,206 INFO L226 Difference]: Without dead ends: 108 [2022-11-21 13:58:36,206 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 [2022-11-21 13:58:36,207 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 [2022-11-21 13:58:36,208 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] [2022-11-21 13:58:36,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2022-11-21 13:58:36,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 79. [2022-11-21 13:58:36,215 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) [2022-11-21 13:58:36,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 84 transitions. [2022-11-21 13:58:36,217 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 84 transitions. Word has length 7 [2022-11-21 13:58:36,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:58:36,218 INFO L495 AbstractCegarLoop]: Abstraction has 79 states and 84 transitions. [2022-11-21 13:58:36,218 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) [2022-11-21 13:58:36,218 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 84 transitions. [2022-11-21 13:58:36,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-21 13:58:36,219 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:58:36,219 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:58:36,235 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d38ee9de-3e9e-4c83-8138-dfcf109b4533/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 13:58:36,430 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d38ee9de-3e9e-4c83-8138-dfcf109b4533/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 13:58:36,431 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)] === [2022-11-21 13:58:36,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:58:36,432 INFO L85 PathProgramCache]: Analyzing trace with hash 2005144648, now seen corresponding path program 1 times [2022-11-21 13:58:36,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 13:58:36,433 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [560494015] [2022-11-21 13:58:36,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:58:36,434 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 [2022-11-21 13:58:36,434 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d38ee9de-3e9e-4c83-8138-dfcf109b4533/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 13:58:36,435 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d38ee9de-3e9e-4c83-8138-dfcf109b4533/bin/uautomizer-vX5HgA9Q3a/mathsat -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) [2022-11-21 13:58:36,445 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d38ee9de-3e9e-4c83-8138-dfcf109b4533/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 13:58:36,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:58:36,546 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-21 13:58:36,549 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 13:58:36,568 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 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 [2022-11-21 13:58:36,651 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:58:36,651 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 13:58:36,652 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 13:58:36,652 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [560494015] [2022-11-21 13:58:36,652 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [560494015] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:58:36,652 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:58:36,653 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-21 13:58:36,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026994221] [2022-11-21 13:58:36,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:58:36,653 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-21 13:58:36,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 13:58:36,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-21 13:58:36,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-21 13:58:36,655 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) [2022-11-21 13:58:37,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:58:37,029 INFO L93 Difference]: Finished difference Result 83 states and 88 transitions. [2022-11-21 13:58:37,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 13:58:37,031 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 [2022-11-21 13:58:37,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:58:37,033 INFO L225 Difference]: With dead ends: 83 [2022-11-21 13:58:37,033 INFO L226 Difference]: Without dead ends: 83 [2022-11-21 13:58:37,033 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-21 13:58:37,035 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, 0.3s IncrementalHoareTripleChecker+Time [2022-11-21 13:58:37,035 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 234 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-21 13:58:37,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2022-11-21 13:58:37,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 82. [2022-11-21 13:58:37,049 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) [2022-11-21 13:58:37,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 87 transitions. [2022-11-21 13:58:37,057 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 87 transitions. Word has length 7 [2022-11-21 13:58:37,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:58:37,058 INFO L495 AbstractCegarLoop]: Abstraction has 82 states and 87 transitions. [2022-11-21 13:58:37,058 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) [2022-11-21 13:58:37,058 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 87 transitions. [2022-11-21 13:58:37,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-21 13:58:37,059 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:58:37,059 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:58:37,080 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d38ee9de-3e9e-4c83-8138-dfcf109b4533/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 13:58:37,275 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d38ee9de-3e9e-4c83-8138-dfcf109b4533/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 13:58:37,276 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)] === [2022-11-21 13:58:37,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:58:37,281 INFO L85 PathProgramCache]: Analyzing trace with hash 859208239, now seen corresponding path program 1 times [2022-11-21 13:58:37,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 13:58:37,282 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1282393597] [2022-11-21 13:58:37,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:58:37,283 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 [2022-11-21 13:58:37,283 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d38ee9de-3e9e-4c83-8138-dfcf109b4533/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 13:58:37,295 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d38ee9de-3e9e-4c83-8138-dfcf109b4533/bin/uautomizer-vX5HgA9Q3a/mathsat -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) [2022-11-21 13:58:37,302 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d38ee9de-3e9e-4c83-8138-dfcf109b4533/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 13:58:37,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:58:37,406 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-21 13:58:37,408 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 13:58:37,417 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 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 [2022-11-21 13:58:37,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:58:37,429 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 13:58:37,429 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 13:58:37,429 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1282393597] [2022-11-21 13:58:37,430 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1282393597] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:58:37,430 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:58:37,430 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-21 13:58:37,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731342505] [2022-11-21 13:58:37,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:58:37,431 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 13:58:37,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 13:58:37,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 13:58:37,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 13:58:37,432 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) [2022-11-21 13:58:37,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:58:37,595 INFO L93 Difference]: Finished difference Result 82 states and 87 transitions. [2022-11-21 13:58:37,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 13:58:37,597 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 [2022-11-21 13:58:37,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:58:37,599 INFO L225 Difference]: With dead ends: 82 [2022-11-21 13:58:37,599 INFO L226 Difference]: Without dead ends: 82 [2022-11-21 13:58:37,599 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 [2022-11-21 13:58:37,601 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, 0.2s IncrementalHoareTripleChecker+Time [2022-11-21 13:58:37,601 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 122 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-21 13:58:37,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2022-11-21 13:58:37,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 81. [2022-11-21 13:58:37,614 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) [2022-11-21 13:58:37,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 86 transitions. [2022-11-21 13:58:37,616 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 86 transitions. Word has length 11 [2022-11-21 13:58:37,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:58:37,617 INFO L495 AbstractCegarLoop]: Abstraction has 81 states and 86 transitions. [2022-11-21 13:58:37,617 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) [2022-11-21 13:58:37,617 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 86 transitions. [2022-11-21 13:58:37,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-21 13:58:37,618 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:58:37,618 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:58:37,647 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d38ee9de-3e9e-4c83-8138-dfcf109b4533/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 13:58:37,837 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d38ee9de-3e9e-4c83-8138-dfcf109b4533/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 13:58:37,837 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)] === [2022-11-21 13:58:37,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:58:37,838 INFO L85 PathProgramCache]: Analyzing trace with hash 859208240, now seen corresponding path program 1 times [2022-11-21 13:58:37,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 13:58:37,839 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1431781799] [2022-11-21 13:58:37,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:58:37,839 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 [2022-11-21 13:58:37,839 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d38ee9de-3e9e-4c83-8138-dfcf109b4533/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 13:58:37,841 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d38ee9de-3e9e-4c83-8138-dfcf109b4533/bin/uautomizer-vX5HgA9Q3a/mathsat -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) [2022-11-21 13:58:37,847 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d38ee9de-3e9e-4c83-8138-dfcf109b4533/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 13:58:37,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:58:38,015 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-21 13:58:38,017 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 13:58:38,028 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 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 [2022-11-21 13:58:38,064 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:58:38,065 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 13:58:38,065 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 13:58:38,065 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1431781799] [2022-11-21 13:58:38,066 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1431781799] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:58:38,066 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:58:38,066 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-21 13:58:38,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726662408] [2022-11-21 13:58:38,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:58:38,067 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 13:58:38,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 13:58:38,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 13:58:38,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 13:58:38,083 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) [2022-11-21 13:58:38,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:58:38,295 INFO L93 Difference]: Finished difference Result 81 states and 86 transitions. [2022-11-21 13:58:38,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 13:58:38,296 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 [2022-11-21 13:58:38,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:58:38,297 INFO L225 Difference]: With dead ends: 81 [2022-11-21 13:58:38,297 INFO L226 Difference]: Without dead ends: 81 [2022-11-21 13:58:38,297 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 [2022-11-21 13:58:38,298 INFO L413 NwaCegarLoop]: 80 mSDtfsCounter, 5 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s 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 [2022-11-21 13:58:38,299 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] [2022-11-21 13:58:38,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2022-11-21 13:58:38,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 80. [2022-11-21 13:58:38,304 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) [2022-11-21 13:58:38,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 85 transitions. [2022-11-21 13:58:38,306 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 85 transitions. Word has length 11 [2022-11-21 13:58:38,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:58:38,306 INFO L495 AbstractCegarLoop]: Abstraction has 80 states and 85 transitions. [2022-11-21 13:58:38,306 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) [2022-11-21 13:58:38,306 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 85 transitions. [2022-11-21 13:58:38,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-21 13:58:38,308 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:58:38,308 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:58:38,345 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d38ee9de-3e9e-4c83-8138-dfcf109b4533/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 13:58:38,521 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d38ee9de-3e9e-4c83-8138-dfcf109b4533/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 13:58:38,522 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)] === [2022-11-21 13:58:38,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:58:38,522 INFO L85 PathProgramCache]: Analyzing trace with hash -1332328513, now seen corresponding path program 1 times [2022-11-21 13:58:38,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 13:58:38,523 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1290819331] [2022-11-21 13:58:38,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:58:38,524 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 13:58:38,524 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d38ee9de-3e9e-4c83-8138-dfcf109b4533/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 13:58:38,538 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d38ee9de-3e9e-4c83-8138-dfcf109b4533/bin/uautomizer-vX5HgA9Q3a/mathsat -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) [2022-11-21 13:58:38,545 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d38ee9de-3e9e-4c83-8138-dfcf109b4533/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 13:58:38,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:58:38,734 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-21 13:58:38,738 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 13:58:38,749 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 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 [2022-11-21 13:58:38,845 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-21 13:58:38,846 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 [2022-11-21 13:58:38,926 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:58:38,926 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 13:58:38,927 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 13:58:38,927 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1290819331] [2022-11-21 13:58:38,927 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1290819331] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:58:38,927 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:58:38,927 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-21 13:58:38,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722475282] [2022-11-21 13:58:38,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:58:38,928 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-21 13:58:38,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 13:58:38,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-21 13:58:38,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-21 13:58:38,929 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) [2022-11-21 13:58:39,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:58:39,596 INFO L93 Difference]: Finished difference Result 129 states and 135 transitions. [2022-11-21 13:58:39,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-21 13:58:39,597 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 [2022-11-21 13:58:39,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:58:39,598 INFO L225 Difference]: With dead ends: 129 [2022-11-21 13:58:39,598 INFO L226 Difference]: Without dead ends: 129 [2022-11-21 13:58:39,599 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 [2022-11-21 13:58:39,600 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 108 mSDsluCounter, 190 mSDsCounter, 0 mSdLazyCounter, 283 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s 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, 0.6s IncrementalHoareTripleChecker+Time [2022-11-21 13:58:39,600 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 235 Invalid, 292 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 283 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-21 13:58:39,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2022-11-21 13:58:39,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 90. [2022-11-21 13:58:39,607 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) [2022-11-21 13:58:39,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 103 transitions. [2022-11-21 13:58:39,609 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 103 transitions. Word has length 14 [2022-11-21 13:58:39,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:58:39,609 INFO L495 AbstractCegarLoop]: Abstraction has 90 states and 103 transitions. [2022-11-21 13:58:39,610 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) [2022-11-21 13:58:39,610 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 103 transitions. [2022-11-21 13:58:39,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-21 13:58:39,610 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:58:39,611 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:58:39,631 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d38ee9de-3e9e-4c83-8138-dfcf109b4533/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 13:58:39,825 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d38ee9de-3e9e-4c83-8138-dfcf109b4533/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 13:58:39,825 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)] === [2022-11-21 13:58:39,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:58:39,826 INFO L85 PathProgramCache]: Analyzing trace with hash -1332328512, now seen corresponding path program 1 times [2022-11-21 13:58:39,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 13:58:39,826 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1126210092] [2022-11-21 13:58:39,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:58:39,827 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 13:58:39,827 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d38ee9de-3e9e-4c83-8138-dfcf109b4533/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 13:58:39,828 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d38ee9de-3e9e-4c83-8138-dfcf109b4533/bin/uautomizer-vX5HgA9Q3a/mathsat -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) [2022-11-21 13:58:39,834 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d38ee9de-3e9e-4c83-8138-dfcf109b4533/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 13:58:40,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:58:40,012 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-21 13:58:40,016 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 13:58:40,033 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 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 [2022-11-21 13:58:40,040 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 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 [2022-11-21 13:58:40,261 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 13:58:40,263 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-21 13:58:40,282 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-21 13:58:40,283 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 [2022-11-21 13:58:40,384 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:58:40,385 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 13:58:40,385 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 13:58:40,385 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1126210092] [2022-11-21 13:58:40,385 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1126210092] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:58:40,385 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:58:40,385 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-21 13:58:40,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329809693] [2022-11-21 13:58:40,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:58:40,386 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-21 13:58:40,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 13:58:40,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-21 13:58:40,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-21 13:58:40,387 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) [2022-11-21 13:58:41,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:58:41,220 INFO L93 Difference]: Finished difference Result 117 states and 130 transitions. [2022-11-21 13:58:41,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-21 13:58:41,221 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 [2022-11-21 13:58:41,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:58:41,222 INFO L225 Difference]: With dead ends: 117 [2022-11-21 13:58:41,222 INFO L226 Difference]: Without dead ends: 117 [2022-11-21 13:58:41,222 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 [2022-11-21 13:58:41,223 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 [2022-11-21 13:58:41,224 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] [2022-11-21 13:58:41,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2022-11-21 13:58:41,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 108. [2022-11-21 13:58:41,239 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) [2022-11-21 13:58:41,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 129 transitions. [2022-11-21 13:58:41,242 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 129 transitions. Word has length 14 [2022-11-21 13:58:41,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:58:41,242 INFO L495 AbstractCegarLoop]: Abstraction has 108 states and 129 transitions. [2022-11-21 13:58:41,243 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) [2022-11-21 13:58:41,243 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 129 transitions. [2022-11-21 13:58:41,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-21 13:58:41,251 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:58:41,251 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:58:41,270 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d38ee9de-3e9e-4c83-8138-dfcf109b4533/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-11-21 13:58:41,452 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d38ee9de-3e9e-4c83-8138-dfcf109b4533/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 13:58:41,453 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)] === [2022-11-21 13:58:41,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:58:41,453 INFO L85 PathProgramCache]: Analyzing trace with hash -467443808, now seen corresponding path program 1 times [2022-11-21 13:58:41,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 13:58:41,454 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [622294814] [2022-11-21 13:58:41,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:58:41,454 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 [2022-11-21 13:58:41,454 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d38ee9de-3e9e-4c83-8138-dfcf109b4533/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 13:58:41,455 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d38ee9de-3e9e-4c83-8138-dfcf109b4533/bin/uautomizer-vX5HgA9Q3a/mathsat -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) [2022-11-21 13:58:41,456 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d38ee9de-3e9e-4c83-8138-dfcf109b4533/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 13:58:41,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:58:41,611 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-21 13:58:41,613 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 13:58:41,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:58:41,640 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 13:58:41,640 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 13:58:41,640 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [622294814] [2022-11-21 13:58:41,640 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [622294814] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:58:41,641 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:58:41,641 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 13:58:41,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104926971] [2022-11-21 13:58:41,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:58:41,642 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 13:58:41,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 13:58:41,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 13:58:41,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-21 13:58:41,643 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) [2022-11-21 13:58:41,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:58:41,819 INFO L93 Difference]: Finished difference Result 107 states and 126 transitions. [2022-11-21 13:58:41,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-21 13:58:41,823 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 [2022-11-21 13:58:41,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:58:41,824 INFO L225 Difference]: With dead ends: 107 [2022-11-21 13:58:41,824 INFO L226 Difference]: Without dead ends: 107 [2022-11-21 13:58:41,824 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 [2022-11-21 13:58:41,825 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, 0.2s IncrementalHoareTripleChecker+Time [2022-11-21 13:58:41,825 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 154 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-21 13:58:41,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2022-11-21 13:58:41,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 107. [2022-11-21 13:58:41,833 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) [2022-11-21 13:58:41,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 126 transitions. [2022-11-21 13:58:41,834 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 126 transitions. Word has length 16 [2022-11-21 13:58:41,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:58:41,835 INFO L495 AbstractCegarLoop]: Abstraction has 107 states and 126 transitions. [2022-11-21 13:58:41,835 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) [2022-11-21 13:58:41,835 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 126 transitions. [2022-11-21 13:58:41,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-21 13:58:41,836 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:58:41,836 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:58:41,853 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d38ee9de-3e9e-4c83-8138-dfcf109b4533/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-11-21 13:58:42,051 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d38ee9de-3e9e-4c83-8138-dfcf109b4533/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 13:58:42,052 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)] === [2022-11-21 13:58:42,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:58:42,053 INFO L85 PathProgramCache]: Analyzing trace with hash -467443807, now seen corresponding path program 1 times [2022-11-21 13:58:42,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 13:58:42,053 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [636358313] [2022-11-21 13:58:42,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:58:42,053 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 [2022-11-21 13:58:42,054 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d38ee9de-3e9e-4c83-8138-dfcf109b4533/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 13:58:42,055 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d38ee9de-3e9e-4c83-8138-dfcf109b4533/bin/uautomizer-vX5HgA9Q3a/mathsat -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) [2022-11-21 13:58:42,056 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d38ee9de-3e9e-4c83-8138-dfcf109b4533/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 13:58:42,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:58:42,223 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-21 13:58:42,225 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 13:58:42,387 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:58:42,388 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 13:58:42,388 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 13:58:42,388 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [636358313] [2022-11-21 13:58:42,388 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [636358313] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:58:42,388 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:58:42,388 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-21 13:58:42,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288516362] [2022-11-21 13:58:42,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:58:42,389 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-21 13:58:42,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 13:58:42,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-21 13:58:42,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-11-21 13:58:42,390 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) [2022-11-21 13:58:42,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:58:42,936 INFO L93 Difference]: Finished difference Result 115 states and 127 transitions. [2022-11-21 13:58:42,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-21 13:58:42,937 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 [2022-11-21 13:58:42,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:58:42,938 INFO L225 Difference]: With dead ends: 115 [2022-11-21 13:58:42,938 INFO L226 Difference]: Without dead ends: 115 [2022-11-21 13:58:42,939 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 [2022-11-21 13:58:42,939 INFO L413 NwaCegarLoop]: 66 mSDtfsCounter, 114 mSDsluCounter, 390 mSDsCounter, 0 mSdLazyCounter, 165 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s 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 [2022-11-21 13:58:42,940 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] [2022-11-21 13:58:42,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2022-11-21 13:58:42,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 107. [2022-11-21 13:58:42,946 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) [2022-11-21 13:58:42,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 125 transitions. [2022-11-21 13:58:42,947 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 125 transitions. Word has length 16 [2022-11-21 13:58:42,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:58:42,948 INFO L495 AbstractCegarLoop]: Abstraction has 107 states and 125 transitions. [2022-11-21 13:58:42,948 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) [2022-11-21 13:58:42,948 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 125 transitions. [2022-11-21 13:58:42,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-21 13:58:42,949 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:58:42,949 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:58:42,971 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d38ee9de-3e9e-4c83-8138-dfcf109b4533/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 13:58:43,163 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d38ee9de-3e9e-4c83-8138-dfcf109b4533/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 13:58:43,164 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)] === [2022-11-21 13:58:43,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:58:43,164 INFO L85 PathProgramCache]: Analyzing trace with hash -1605856063, now seen corresponding path program 1 times [2022-11-21 13:58:43,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 13:58:43,165 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1264188318] [2022-11-21 13:58:43,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:58:43,165 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 [2022-11-21 13:58:43,165 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d38ee9de-3e9e-4c83-8138-dfcf109b4533/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 13:58:43,166 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d38ee9de-3e9e-4c83-8138-dfcf109b4533/bin/uautomizer-vX5HgA9Q3a/mathsat -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) [2022-11-21 13:58:43,171 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d38ee9de-3e9e-4c83-8138-dfcf109b4533/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 13:58:43,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:58:43,322 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-21 13:58:43,325 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 13:58:43,334 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-21 13:58:43,396 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:58:43,396 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 13:58:43,396 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 13:58:43,397 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1264188318] [2022-11-21 13:58:43,397 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1264188318] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:58:43,397 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:58:43,397 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-21 13:58:43,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002256635] [2022-11-21 13:58:43,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:58:43,398 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 13:58:43,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 13:58:43,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 13:58:43,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-21 13:58:43,399 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) [2022-11-21 13:58:43,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:58:43,785 INFO L93 Difference]: Finished difference Result 114 states and 122 transitions. [2022-11-21 13:58:43,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-21 13:58:43,786 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 [2022-11-21 13:58:43,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:58:43,786 INFO L225 Difference]: With dead ends: 114 [2022-11-21 13:58:43,786 INFO L226 Difference]: Without dead ends: 114 [2022-11-21 13:58:43,787 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 [2022-11-21 13:58:43,787 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 [2022-11-21 13:58:43,788 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] [2022-11-21 13:58:43,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2022-11-21 13:58:43,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 106. [2022-11-21 13:58:43,793 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) [2022-11-21 13:58:43,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 120 transitions. [2022-11-21 13:58:43,794 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 120 transitions. Word has length 17 [2022-11-21 13:58:43,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:58:43,795 INFO L495 AbstractCegarLoop]: Abstraction has 106 states and 120 transitions. [2022-11-21 13:58:43,795 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) [2022-11-21 13:58:43,796 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 120 transitions. [2022-11-21 13:58:43,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-21 13:58:43,796 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:58:43,797 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:58:43,817 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d38ee9de-3e9e-4c83-8138-dfcf109b4533/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 13:58:44,016 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d38ee9de-3e9e-4c83-8138-dfcf109b4533/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 13:58:44,017 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)] === [2022-11-21 13:58:44,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:58:44,017 INFO L85 PathProgramCache]: Analyzing trace with hash -1605856062, now seen corresponding path program 1 times [2022-11-21 13:58:44,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 13:58:44,018 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1431430316] [2022-11-21 13:58:44,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:58:44,018 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 [2022-11-21 13:58:44,018 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d38ee9de-3e9e-4c83-8138-dfcf109b4533/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 13:58:44,019 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d38ee9de-3e9e-4c83-8138-dfcf109b4533/bin/uautomizer-vX5HgA9Q3a/mathsat -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) [2022-11-21 13:58:44,020 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d38ee9de-3e9e-4c83-8138-dfcf109b4533/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 13:58:44,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:58:44,183 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-21 13:58:44,186 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 13:58:44,193 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-21 13:58:44,305 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:58:44,305 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 13:58:44,305 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 13:58:44,305 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1431430316] [2022-11-21 13:58:44,306 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1431430316] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:58:44,306 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:58:44,306 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-21 13:58:44,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624329348] [2022-11-21 13:58:44,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:58:44,307 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 13:58:44,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 13:58:44,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 13:58:44,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-21 13:58:44,307 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) [2022-11-21 13:58:44,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:58:44,808 INFO L93 Difference]: Finished difference Result 112 states and 118 transitions. [2022-11-21 13:58:44,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-21 13:58:44,809 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 [2022-11-21 13:58:44,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:58:44,810 INFO L225 Difference]: With dead ends: 112 [2022-11-21 13:58:44,810 INFO L226 Difference]: Without dead ends: 112 [2022-11-21 13:58:44,810 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 [2022-11-21 13:58:44,811 INFO L413 NwaCegarLoop]: 67 mSDtfsCounter, 36 mSDsluCounter, 179 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s 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 [2022-11-21 13:58:44,812 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] [2022-11-21 13:58:44,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2022-11-21 13:58:44,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 106. [2022-11-21 13:58:44,817 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) [2022-11-21 13:58:44,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 116 transitions. [2022-11-21 13:58:44,818 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 116 transitions. Word has length 17 [2022-11-21 13:58:44,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:58:44,819 INFO L495 AbstractCegarLoop]: Abstraction has 106 states and 116 transitions. [2022-11-21 13:58:44,819 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) [2022-11-21 13:58:44,819 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 116 transitions. [2022-11-21 13:58:44,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-21 13:58:44,820 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:58:44,820 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:58:44,835 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d38ee9de-3e9e-4c83-8138-dfcf109b4533/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 13:58:45,035 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d38ee9de-3e9e-4c83-8138-dfcf109b4533/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 13:58:45,035 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)] === [2022-11-21 13:58:45,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:58:45,036 INFO L85 PathProgramCache]: Analyzing trace with hash -1334414076, now seen corresponding path program 1 times [2022-11-21 13:58:45,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 13:58:45,037 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1629375540] [2022-11-21 13:58:45,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:58:45,037 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 [2022-11-21 13:58:45,037 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d38ee9de-3e9e-4c83-8138-dfcf109b4533/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 13:58:45,038 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d38ee9de-3e9e-4c83-8138-dfcf109b4533/bin/uautomizer-vX5HgA9Q3a/mathsat -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) [2022-11-21 13:58:45,049 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d38ee9de-3e9e-4c83-8138-dfcf109b4533/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 13:58:45,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:58:45,291 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 28 conjunts are in the unsatisfiable core [2022-11-21 13:58:45,295 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 13:58:45,300 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 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 [2022-11-21 13:58:45,339 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 [2022-11-21 13:58:45,384 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 [2022-11-21 13:58:45,419 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-21 13:58:45,420 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 [2022-11-21 13:58:45,475 INFO L350 Elim1Store]: Elim1 eliminated variable 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 [2022-11-21 13:58:45,592 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 [2022-11-21 13:58:45,661 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:58:45,662 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 13:58:45,662 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 13:58:45,662 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1629375540] [2022-11-21 13:58:45,662 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1629375540] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:58:45,662 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:58:45,662 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-21 13:58:45,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992479901] [2022-11-21 13:58:45,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:58:45,663 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-21 13:58:45,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 13:58:45,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-21 13:58:45,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2022-11-21 13:58:45,664 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) [2022-11-21 13:58:46,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:58:46,904 INFO L93 Difference]: Finished difference Result 162 states and 177 transitions. [2022-11-21 13:58:46,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-21 13:58:46,905 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 [2022-11-21 13:58:46,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:58:46,908 INFO L225 Difference]: With dead ends: 162 [2022-11-21 13:58:46,908 INFO L226 Difference]: Without dead ends: 162 [2022-11-21 13:58:46,908 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=73, Invalid=307, Unknown=0, NotChecked=0, Total=380 [2022-11-21 13:58:46,909 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 [2022-11-21 13:58:46,909 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] [2022-11-21 13:58:46,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2022-11-21 13:58:46,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 128. [2022-11-21 13:58:46,916 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) [2022-11-21 13:58:46,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 144 transitions. [2022-11-21 13:58:46,918 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 144 transitions. Word has length 19 [2022-11-21 13:58:46,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:58:46,918 INFO L495 AbstractCegarLoop]: Abstraction has 128 states and 144 transitions. [2022-11-21 13:58:46,919 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) [2022-11-21 13:58:46,919 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 144 transitions. [2022-11-21 13:58:46,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-21 13:58:46,920 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:58:46,920 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:58:46,941 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d38ee9de-3e9e-4c83-8138-dfcf109b4533/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 13:58:47,141 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d38ee9de-3e9e-4c83-8138-dfcf109b4533/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 13:58:47,141 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)] === [2022-11-21 13:58:47,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:58:47,142 INFO L85 PathProgramCache]: Analyzing trace with hash -1334414075, now seen corresponding path program 1 times [2022-11-21 13:58:47,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 13:58:47,142 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [75702780] [2022-11-21 13:58:47,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:58:47,143 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 [2022-11-21 13:58:47,143 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d38ee9de-3e9e-4c83-8138-dfcf109b4533/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 13:58:47,144 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d38ee9de-3e9e-4c83-8138-dfcf109b4533/bin/uautomizer-vX5HgA9Q3a/mathsat -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) [2022-11-21 13:58:47,151 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d38ee9de-3e9e-4c83-8138-dfcf109b4533/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 13:58:47,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:58:47,436 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 46 conjunts are in the unsatisfiable core [2022-11-21 13:58:47,441 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 13:58:47,452 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 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 [2022-11-21 13:58:47,461 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 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 [2022-11-21 13:58:47,568 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 [2022-11-21 13:58:47,578 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 [2022-11-21 13:58:47,656 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 13:58:47,658 INFO L350 Elim1Store]: Elim1 eliminated variable 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 [2022-11-21 13:58:47,697 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 13:58:47,698 INFO L350 Elim1Store]: Elim1 eliminated variable 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 [2022-11-21 13:58:47,743 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-21 13:58:47,743 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 [2022-11-21 13:58:47,760 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 [2022-11-21 13:58:47,845 INFO L350 Elim1Store]: Elim1 eliminated variable 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 [2022-11-21 13:58:47,865 INFO L350 Elim1Store]: Elim1 eliminated variable 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 [2022-11-21 13:58:48,018 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 [2022-11-21 13:58:48,023 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 [2022-11-21 13:58:48,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:58:48,122 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 13:58:48,122 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 13:58:48,123 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [75702780] [2022-11-21 13:58:48,123 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [75702780] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:58:48,123 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:58:48,123 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-21 13:58:48,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765082334] [2022-11-21 13:58:48,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:58:48,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-21 13:58:48,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 13:58:48,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-21 13:58:48,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2022-11-21 13:58:48,125 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) [2022-11-21 13:58:49,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:58:49,696 INFO L93 Difference]: Finished difference Result 131 states and 145 transitions. [2022-11-21 13:58:49,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-21 13:58:49,697 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 [2022-11-21 13:58:49,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:58:49,699 INFO L225 Difference]: With dead ends: 131 [2022-11-21 13:58:49,700 INFO L226 Difference]: Without dead ends: 131 [2022-11-21 13:58:49,700 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=73, Invalid=307, Unknown=0, NotChecked=0, Total=380 [2022-11-21 13:58:49,701 INFO L413 NwaCegarLoop]: 66 mSDtfsCounter, 36 mSDsluCounter, 360 mSDsCounter, 0 mSdLazyCounter, 396 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s 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, 1.1s IncrementalHoareTripleChecker+Time [2022-11-21 13:58:49,701 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 426 Invalid, 408 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 396 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-21 13:58:49,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2022-11-21 13:58:49,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 131. [2022-11-21 13:58:49,708 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) [2022-11-21 13:58:49,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 145 transitions. [2022-11-21 13:58:49,709 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 145 transitions. Word has length 19 [2022-11-21 13:58:49,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:58:49,710 INFO L495 AbstractCegarLoop]: Abstraction has 131 states and 145 transitions. [2022-11-21 13:58:49,710 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) [2022-11-21 13:58:49,710 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 145 transitions. [2022-11-21 13:58:49,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-11-21 13:58:49,711 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:58:49,711 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] [2022-11-21 13:58:49,728 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d38ee9de-3e9e-4c83-8138-dfcf109b4533/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 13:58:49,927 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d38ee9de-3e9e-4c83-8138-dfcf109b4533/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 13:58:49,928 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)] === [2022-11-21 13:58:49,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:58:49,928 INFO L85 PathProgramCache]: Analyzing trace with hash -1965497160, now seen corresponding path program 1 times [2022-11-21 13:58:49,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 13:58:49,929 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [139634934] [2022-11-21 13:58:49,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:58:49,929 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 [2022-11-21 13:58:49,929 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d38ee9de-3e9e-4c83-8138-dfcf109b4533/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 13:58:49,930 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d38ee9de-3e9e-4c83-8138-dfcf109b4533/bin/uautomizer-vX5HgA9Q3a/mathsat -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) [2022-11-21 13:58:49,933 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d38ee9de-3e9e-4c83-8138-dfcf109b4533/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 13:58:50,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:58:50,229 INFO L263 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-21 13:58:50,232 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 13:58:50,248 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-21 13:58:50,254 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 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 [2022-11-21 13:58:50,358 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 [2022-11-21 13:58:50,410 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 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 [2022-11-21 13:58:50,466 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 13:58:50,468 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 [2022-11-21 13:58:50,480 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-21 13:58:50,480 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 [2022-11-21 13:58:50,573 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:58:50,573 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 13:58:51,194 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 13:58:51,194 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [139634934] [2022-11-21 13:58:51,194 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [139634934] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 13:58:51,194 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1188362494] [2022-11-21 13:58:51,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:58:51,195 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-21 13:58:51,195 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d38ee9de-3e9e-4c83-8138-dfcf109b4533/bin/uautomizer-vX5HgA9Q3a/cvc4 [2022-11-21 13:58:51,200 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d38ee9de-3e9e-4c83-8138-dfcf109b4533/bin/uautomizer-vX5HgA9Q3a/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-21 13:58:51,239 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d38ee9de-3e9e-4c83-8138-dfcf109b4533/bin/uautomizer-vX5HgA9Q3a/cvc4 --incremental --print-success --lang smt (16)] Waiting until timeout for monitored process [2022-11-21 13:58:51,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:58:51,759 INFO L263 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 35 conjunts are in the unsatisfiable core [2022-11-21 13:58:51,764 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 13:58:51,771 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 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 [2022-11-21 13:58:51,780 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-21 13:58:52,020 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 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 [2022-11-21 13:58:52,428 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 13:58:52,429 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 [2022-11-21 13:58:52,444 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-21 13:58:52,445 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 [2022-11-21 13:58:52,466 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:58:52,466 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 13:58:53,495 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1188362494] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 13:58:53,495 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 13:58:53,495 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 12] total 13 [2022-11-21 13:58:53,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086684780] [2022-11-21 13:58:53,496 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 13:58:53,496 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-21 13:58:53,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 13:58:53,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-21 13:58:53,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=263, Unknown=3, NotChecked=32, Total=342 [2022-11-21 13:58:53,497 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) [2022-11-21 13:58:56,657 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 13:59:00,741 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 13:59:03,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:59:03,609 INFO L93 Difference]: Finished difference Result 146 states and 164 transitions. [2022-11-21 13:59:03,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-21 13:59:03,611 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 [2022-11-21 13:59:03,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:59:03,612 INFO L225 Difference]: With dead ends: 146 [2022-11-21 13:59:03,612 INFO L226 Difference]: Without dead ends: 146 [2022-11-21 13:59:03,613 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 49 SyntacticMatches, 2 SemanticMatches, 23 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 5.9s TimeCoverageRelationStatistics Valid=80, Invalid=471, Unknown=5, NotChecked=44, Total=600 [2022-11-21 13:59:03,614 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 66 mSDsluCounter, 342 mSDsCounter, 0 mSdLazyCounter, 412 mSolverCounterSat, 8 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 394 SdHoareTripleChecker+Invalid, 512 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 412 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 90 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2022-11-21 13:59:03,614 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 394 Invalid, 512 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 412 Invalid, 2 Unknown, 90 Unchecked, 5.5s Time] [2022-11-21 13:59:03,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2022-11-21 13:59:03,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 139. [2022-11-21 13:59:03,619 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) [2022-11-21 13:59:03,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 155 transitions. [2022-11-21 13:59:03,620 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 155 transitions. Word has length 29 [2022-11-21 13:59:03,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:59:03,621 INFO L495 AbstractCegarLoop]: Abstraction has 139 states and 155 transitions. [2022-11-21 13:59:03,621 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) [2022-11-21 13:59:03,621 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 155 transitions. [2022-11-21 13:59:03,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-21 13:59:03,622 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:59:03,623 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] [2022-11-21 13:59:03,635 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d38ee9de-3e9e-4c83-8138-dfcf109b4533/bin/uautomizer-vX5HgA9Q3a/cvc4 --incremental --print-success --lang smt (16)] Forceful destruction successful, exit code 0 [2022-11-21 13:59:03,846 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d38ee9de-3e9e-4c83-8138-dfcf109b4533/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 13:59:04,023 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d38ee9de-3e9e-4c83-8138-dfcf109b4533/bin/uautomizer-vX5HgA9Q3a/cvc4 --incremental --print-success --lang smt,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d38ee9de-3e9e-4c83-8138-dfcf109b4533/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 13:59:04,024 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)] === [2022-11-21 13:59:04,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:59:04,024 INFO L85 PathProgramCache]: Analyzing trace with hash 1572542800, now seen corresponding path program 1 times [2022-11-21 13:59:04,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 13:59:04,025 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [63427878] [2022-11-21 13:59:04,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:59:04,025 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 [2022-11-21 13:59:04,025 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d38ee9de-3e9e-4c83-8138-dfcf109b4533/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 13:59:04,026 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d38ee9de-3e9e-4c83-8138-dfcf109b4533/bin/uautomizer-vX5HgA9Q3a/mathsat -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) [2022-11-21 13:59:04,047 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d38ee9de-3e9e-4c83-8138-dfcf109b4533/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 13:59:04,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:59:04,393 INFO L263 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 39 conjunts are in the unsatisfiable core [2022-11-21 13:59:04,395 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 13:59:05,216 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 13:59:05,217 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 [2022-11-21 13:59:05,234 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-21 13:59:05,234 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 13 treesize of output 13 [2022-11-21 13:59:05,517 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:59:05,517 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 13:59:07,812 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 60 treesize of output 54 [2022-11-21 13:59:07,900 INFO L321 Elim1Store]: treesize reduction 7, result has 77.4 percent of original size [2022-11-21 13:59:07,901 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 [2022-11-21 13:59:08,892 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-21 13:59:08,892 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 [2022-11-21 13:59:08,923 INFO L321 Elim1Store]: treesize reduction 7, result has 30.0 percent of original size [2022-11-21 13:59:08,923 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 15 treesize of output 14 [2022-11-21 13:59:09,701 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-21 13:59:09,701 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 [2022-11-21 13:59:09,876 INFO L321 Elim1Store]: treesize reduction 7, result has 30.0 percent of original size [2022-11-21 13:59:09,877 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 [2022-11-21 13:59:10,291 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:59:10,291 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 13:59:10,292 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [63427878] [2022-11-21 13:59:10,292 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [63427878] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 13:59:10,292 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 13:59:10,292 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15] total 30 [2022-11-21 13:59:10,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924864000] [2022-11-21 13:59:10,292 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 13:59:10,293 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-11-21 13:59:10,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 13:59:10,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-11-21 13:59:10,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=844, Unknown=0, NotChecked=0, Total=930 [2022-11-21 13:59:10,294 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) [2022-11-21 13:59:18,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:59:18,103 INFO L93 Difference]: Finished difference Result 168 states and 180 transitions. [2022-11-21 13:59:18,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-21 13:59:18,104 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 [2022-11-21 13:59:18,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:59:18,105 INFO L225 Difference]: With dead ends: 168 [2022-11-21 13:59:18,105 INFO L226 Difference]: Without dead ends: 168 [2022-11-21 13:59:18,106 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=231, Invalid=1575, Unknown=0, NotChecked=0, Total=1806 [2022-11-21 13:59:18,107 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 313 mSDsluCounter, 553 mSDsCounter, 0 mSdLazyCounter, 1115 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 314 SdHoareTripleChecker+Valid, 597 SdHoareTripleChecker+Invalid, 1154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 1115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2022-11-21 13:59:18,107 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [314 Valid, 597 Invalid, 1154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 1115 Invalid, 0 Unknown, 0 Unchecked, 5.6s Time] [2022-11-21 13:59:18,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2022-11-21 13:59:18,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 136. [2022-11-21 13:59:18,113 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) [2022-11-21 13:59:18,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 148 transitions. [2022-11-21 13:59:18,114 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 148 transitions. Word has length 36 [2022-11-21 13:59:18,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:59:18,114 INFO L495 AbstractCegarLoop]: Abstraction has 136 states and 148 transitions. [2022-11-21 13:59:18,115 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) [2022-11-21 13:59:18,116 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 148 transitions. [2022-11-21 13:59:18,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-11-21 13:59:18,120 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:59:18,120 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] [2022-11-21 13:59:18,137 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d38ee9de-3e9e-4c83-8138-dfcf109b4533/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 13:59:18,335 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d38ee9de-3e9e-4c83-8138-dfcf109b4533/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 13:59:18,335 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)] === [2022-11-21 13:59:18,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:59:18,336 INFO L85 PathProgramCache]: Analyzing trace with hash 1746009876, now seen corresponding path program 1 times [2022-11-21 13:59:18,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 13:59:18,336 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1212437398] [2022-11-21 13:59:18,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:59:18,337 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 [2022-11-21 13:59:18,337 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d38ee9de-3e9e-4c83-8138-dfcf109b4533/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 13:59:18,338 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d38ee9de-3e9e-4c83-8138-dfcf109b4533/bin/uautomizer-vX5HgA9Q3a/mathsat -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) [2022-11-21 13:59:18,339 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d38ee9de-3e9e-4c83-8138-dfcf109b4533/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 13:59:18,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:59:18,891 INFO L263 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 76 conjunts are in the unsatisfiable core [2022-11-21 13:59:18,901 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 13:59:18,909 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 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 [2022-11-21 13:59:18,993 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 [2022-11-21 13:59:19,008 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 [2022-11-21 13:59:19,059 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 13:59:19,060 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 [2022-11-21 13:59:19,083 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 13:59:19,084 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-21 13:59:19,139 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-21 13:59:19,140 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 [2022-11-21 13:59:19,313 INFO L350 Elim1Store]: Elim1 eliminated variable 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 [2022-11-21 13:59:19,347 INFO L350 Elim1Store]: Elim1 eliminated variable 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 [2022-11-21 13:59:19,375 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 [2022-11-21 13:59:19,384 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 [2022-11-21 13:59:20,901 INFO L350 Elim1Store]: Elim1 eliminated variable 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 [2022-11-21 13:59:20,968 INFO L321 Elim1Store]: treesize reduction 46, result has 19.3 percent of original size [2022-11-21 13:59:20,969 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 [2022-11-21 13:59:20,979 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 [2022-11-21 13:59:20,991 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 [2022-11-21 13:59:21,013 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 [2022-11-21 13:59:21,301 INFO L321 Elim1Store]: treesize reduction 56, result has 35.6 percent of original size [2022-11-21 13:59:21,302 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 [2022-11-21 13:59:21,530 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 32 [2022-11-21 13:59:22,090 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 [2022-11-21 13:59:22,569 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:59:22,569 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 13:59:27,895 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 13:59:27,895 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1212437398] [2022-11-21 13:59:27,895 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1212437398] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 13:59:27,896 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1160193507] [2022-11-21 13:59:27,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:59:27,896 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-21 13:59:27,896 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d38ee9de-3e9e-4c83-8138-dfcf109b4533/bin/uautomizer-vX5HgA9Q3a/cvc4 [2022-11-21 13:59:27,898 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d38ee9de-3e9e-4c83-8138-dfcf109b4533/bin/uautomizer-vX5HgA9Q3a/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-21 13:59:27,933 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d38ee9de-3e9e-4c83-8138-dfcf109b4533/bin/uautomizer-vX5HgA9Q3a/cvc4 --incremental --print-success --lang smt (19)] Waiting until timeout for monitored process [2022-11-21 13:59:28,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:59:28,862 INFO L263 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 79 conjunts are in the unsatisfiable core [2022-11-21 13:59:28,868 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 13:59:28,891 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 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 [2022-11-21 13:59:28,943 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 [2022-11-21 13:59:28,953 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-21 13:59:28,977 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 13:59:28,978 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-21 13:59:28,993 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 13:59:28,994 INFO L350 Elim1Store]: Elim1 eliminated variable 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 [2022-11-21 13:59:29,054 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-21 13:59:29,054 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 [2022-11-21 13:59:29,170 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-21 13:59:29,206 INFO L350 Elim1Store]: Elim1 eliminated variable 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 [2022-11-21 13:59:29,230 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 [2022-11-21 13:59:29,243 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 [2022-11-21 13:59:30,248 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 65 treesize of output 36 [2022-11-21 13:59:30,327 INFO L321 Elim1Store]: treesize reduction 46, result has 19.3 percent of original size [2022-11-21 13:59:30,327 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 [2022-11-21 13:59:30,339 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 [2022-11-21 13:59:30,351 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 13:59:30,352 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 [2022-11-21 13:59:30,370 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 [2022-11-21 13:59:30,559 INFO L321 Elim1Store]: treesize reduction 56, result has 35.6 percent of original size [2022-11-21 13:59:30,559 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 [2022-11-21 13:59:30,832 INFO L350 Elim1Store]: Elim1 eliminated variable 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 [2022-11-21 13:59:31,345 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 [2022-11-21 13:59:31,734 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:59:31,734 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 13:59:34,004 WARN L837 $PredicateComparison]: unable to prove that (forall ((|v_create_sub_list_insert_sub_~sub~0#1.base_24| (_ BitVec 32)) (v_ArrVal_834 (_ BitVec 1)) (v_ArrVal_713 (Array (_ BitVec 32) (_ BitVec 32)))) (or (= (_ bv0 1) (bvadd (select (store |c_#valid| |v_create_sub_list_insert_sub_~sub~0#1.base_24| v_ArrVal_834) (select (select (store |c_#memory_$Pointer$.base| |v_create_sub_list_insert_sub_~sub~0#1.base_24| v_ArrVal_713) |c_create_sub_list_~sub#1.base|) (bvadd (_ bv4 32) |c_create_sub_list_~sub#1.offset|))) (_ bv1 1))) (not (= (select |c_#valid| |v_create_sub_list_insert_sub_~sub~0#1.base_24|) (_ bv0 1))))) is different from false [2022-11-21 13:59:35,838 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1160193507] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 13:59:35,838 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 13:59:35,838 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 27 [2022-11-21 13:59:35,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127277962] [2022-11-21 13:59:35,839 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 13:59:35,839 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-11-21 13:59:35,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 13:59:35,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-11-21 13:59:35,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=1201, Unknown=26, NotChecked=70, Total=1406 [2022-11-21 13:59:35,841 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) [2022-11-21 13:59:47,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:59:47,574 INFO L93 Difference]: Finished difference Result 156 states and 169 transitions. [2022-11-21 13:59:47,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-11-21 13:59:47,575 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 [2022-11-21 13:59:47,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:59:47,577 INFO L225 Difference]: With dead ends: 156 [2022-11-21 13:59:47,577 INFO L226 Difference]: Without dead ends: 156 [2022-11-21 13:59:47,579 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 55 SyntacticMatches, 5 SemanticMatches, 55 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 622 ImplicationChecksByTransitivity, 15.2s TimeCoverageRelationStatistics Valid=299, Invalid=2728, Unknown=57, NotChecked=108, Total=3192 [2022-11-21 13:59:47,579 INFO L413 NwaCegarLoop]: 71 mSDtfsCounter, 84 mSDsluCounter, 977 mSDsCounter, 0 mSdLazyCounter, 1183 mSolverCounterSat, 29 mSolverCounterUnsat, 9 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 1048 SdHoareTripleChecker+Invalid, 1221 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 1183 IncrementalHoareTripleChecker+Invalid, 9 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2022-11-21 13:59:47,580 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 1048 Invalid, 1221 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 1183 Invalid, 9 Unknown, 0 Unchecked, 6.3s Time] [2022-11-21 13:59:47,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2022-11-21 13:59:47,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 150. [2022-11-21 13:59:47,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 110 states have (on average 1.309090909090909) internal successors, (144), 133 states have internal predecessors, (144), 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) [2022-11-21 13:59:47,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 163 transitions. [2022-11-21 13:59:47,587 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 163 transitions. Word has length 35 [2022-11-21 13:59:47,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:59:47,588 INFO L495 AbstractCegarLoop]: Abstraction has 150 states and 163 transitions. [2022-11-21 13:59:47,588 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) [2022-11-21 13:59:47,588 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 163 transitions. [2022-11-21 13:59:47,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-11-21 13:59:47,589 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:59:47,589 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] [2022-11-21 13:59:47,604 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d38ee9de-3e9e-4c83-8138-dfcf109b4533/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 13:59:47,801 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d38ee9de-3e9e-4c83-8138-dfcf109b4533/bin/uautomizer-vX5HgA9Q3a/cvc4 --incremental --print-success --lang smt (19)] Forceful destruction successful, exit code 0 [2022-11-21 13:59:47,995 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d38ee9de-3e9e-4c83-8138-dfcf109b4533/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d38ee9de-3e9e-4c83-8138-dfcf109b4533/bin/uautomizer-vX5HgA9Q3a/cvc4 --incremental --print-success --lang smt [2022-11-21 13:59:47,995 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)] === [2022-11-21 13:59:47,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:59:47,996 INFO L85 PathProgramCache]: Analyzing trace with hash 1746009877, now seen corresponding path program 1 times [2022-11-21 13:59:47,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 13:59:47,996 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [618168750] [2022-11-21 13:59:47,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:59:47,997 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 13:59:47,997 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d38ee9de-3e9e-4c83-8138-dfcf109b4533/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 13:59:47,998 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d38ee9de-3e9e-4c83-8138-dfcf109b4533/bin/uautomizer-vX5HgA9Q3a/mathsat -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) [2022-11-21 13:59:48,003 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d38ee9de-3e9e-4c83-8138-dfcf109b4533/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 13:59:48,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:59:48,573 INFO L263 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 95 conjunts are in the unsatisfiable core [2022-11-21 13:59:48,580 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 13:59:48,589 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 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 [2022-11-21 13:59:48,688 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 [2022-11-21 13:59:48,697 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 [2022-11-21 13:59:48,756 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 13:59:48,757 INFO L350 Elim1Store]: Elim1 eliminated variable 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 [2022-11-21 13:59:48,767 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 13:59:48,769 INFO L350 Elim1Store]: Elim1 eliminated variable 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 [2022-11-21 13:59:48,841 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-21 13:59:48,842 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 [2022-11-21 13:59:48,871 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 [2022-11-21 13:59:49,039 INFO L350 Elim1Store]: Elim1 eliminated variable 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 [2022-11-21 13:59:49,057 INFO L350 Elim1Store]: Elim1 eliminated variable 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 [2022-11-21 13:59:49,102 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 [2022-11-21 13:59:49,111 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 [2022-11-21 13:59:51,626 INFO L350 Elim1Store]: Elim1 eliminated variable 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 [2022-11-21 13:59:51,832 INFO L321 Elim1Store]: treesize reduction 46, result has 19.3 percent of original size [2022-11-21 13:59:51,833 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 [2022-11-21 13:59:51,845 INFO L350 Elim1Store]: Elim1 eliminated variable 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 [2022-11-21 13:59:51,866 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 13:59:51,867 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 [2022-11-21 13:59:51,880 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 13:59:51,888 INFO L350 Elim1Store]: Elim1 eliminated variable 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 [2022-11-21 13:59:51,896 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 13:59:51,897 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 [2022-11-21 13:59:52,404 INFO L321 Elim1Store]: treesize reduction 12, result has 52.0 percent of original size [2022-11-21 13:59:52,404 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 [2022-11-21 13:59:52,429 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 [2022-11-21 13:59:52,669 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 [2022-11-21 13:59:52,707 INFO L321 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-11-21 13:59:52,708 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 [2022-11-21 13:59:53,288 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 [2022-11-21 13:59:53,297 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 [2022-11-21 13:59:53,579 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:59:53,579 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 13:59:55,027 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 [2022-11-21 14:00:10,665 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 14:00:10,666 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [618168750] [2022-11-21 14:00:10,666 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [618168750] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 14:00:10,666 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [10574921] [2022-11-21 14:00:10,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 14:00:10,666 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-21 14:00:10,667 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d38ee9de-3e9e-4c83-8138-dfcf109b4533/bin/uautomizer-vX5HgA9Q3a/cvc4 [2022-11-21 14:00:10,671 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d38ee9de-3e9e-4c83-8138-dfcf109b4533/bin/uautomizer-vX5HgA9Q3a/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-21 14:00:10,675 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d38ee9de-3e9e-4c83-8138-dfcf109b4533/bin/uautomizer-vX5HgA9Q3a/cvc4 --incremental --print-success --lang smt (21)] Waiting until timeout for monitored process [2022-11-21 14:00:12,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:00:12,194 INFO L263 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 100 conjunts are in the unsatisfiable core [2022-11-21 14:00:12,201 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 14:00:12,208 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-21 14:00:12,249 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 [2022-11-21 14:00:12,262 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 [2022-11-21 14:00:12,277 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:00:12,278 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 [2022-11-21 14:00:12,296 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:00:12,297 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-21 14:00:12,328 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 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 [2022-11-21 14:00:12,386 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-21 14:00:12,386 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 [2022-11-21 14:00:12,512 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-21 14:00:12,557 INFO L350 Elim1Store]: Elim1 eliminated variable 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 [2022-11-21 14:00:12,578 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 [2022-11-21 14:00:12,597 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 [2022-11-21 14:00:19,377 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 133 treesize of output 86 [2022-11-21 14:00:19,389 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 [2022-11-21 14:00:19,497 INFO L321 Elim1Store]: treesize reduction 34, result has 24.4 percent of original size [2022-11-21 14:00:19,498 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 [2022-11-21 14:00:19,509 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:00:19,510 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 [2022-11-21 14:00:19,522 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:00:19,529 INFO L350 Elim1Store]: Elim1 eliminated variable 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 [2022-11-21 14:00:19,537 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:00:19,538 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 [2022-11-21 14:00:20,321 INFO L321 Elim1Store]: treesize reduction 12, result has 52.0 percent of original size [2022-11-21 14:00:20,321 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 [2022-11-21 14:00:20,350 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 [2022-11-21 14:00:20,901 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 [2022-11-21 14:00:20,939 INFO L321 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-11-21 14:00:20,939 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 [2022-11-21 14:00:21,011 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 [2022-11-21 14:00:21,026 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 [2022-11-21 14:00:21,379 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 14:00:21,379 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 14:00:21,541 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 [2022-11-21 14:00:38,043 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [10574921] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 14:00:38,043 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 14:00:38,043 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 30 [2022-11-21 14:00:38,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627940085] [2022-11-21 14:00:38,044 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 14:00:38,044 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-11-21 14:00:38,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 14:00:38,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-11-21 14:00:38,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=1420, Unknown=30, NotChecked=154, Total=1722 [2022-11-21 14:00:38,046 INFO L87 Difference]: Start difference. First operand 150 states and 163 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) [2022-11-21 14:00:55,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 14:00:55,268 INFO L93 Difference]: Finished difference Result 150 states and 162 transitions. [2022-11-21 14:00:55,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-21 14:00:55,269 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 [2022-11-21 14:00:55,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 14:00:55,271 INFO L225 Difference]: With dead ends: 150 [2022-11-21 14:00:55,271 INFO L226 Difference]: Without dead ends: 150 [2022-11-21 14:00:55,272 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 55 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 545 ImplicationChecksByTransitivity, 37.6s TimeCoverageRelationStatistics Valid=216, Invalid=2407, Unknown=37, NotChecked=202, Total=2862 [2022-11-21 14:00:55,273 INFO L413 NwaCegarLoop]: 68 mSDtfsCounter, 58 mSDsluCounter, 787 mSDsCounter, 0 mSdLazyCounter, 1055 mSolverCounterSat, 18 mSolverCounterUnsat, 21 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 855 SdHoareTripleChecker+Invalid, 1094 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 1055 IncrementalHoareTripleChecker+Invalid, 21 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.9s IncrementalHoareTripleChecker+Time [2022-11-21 14:00:55,273 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 855 Invalid, 1094 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 1055 Invalid, 21 Unknown, 0 Unchecked, 7.9s Time] [2022-11-21 14:00:55,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2022-11-21 14:00:55,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 150. [2022-11-21 14:00:55,279 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) [2022-11-21 14:00:55,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 162 transitions. [2022-11-21 14:00:55,281 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 162 transitions. Word has length 35 [2022-11-21 14:00:55,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 14:00:55,281 INFO L495 AbstractCegarLoop]: Abstraction has 150 states and 162 transitions. [2022-11-21 14:00:55,282 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) [2022-11-21 14:00:55,282 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 162 transitions. [2022-11-21 14:00:55,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-11-21 14:00:55,283 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 14:00:55,283 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] [2022-11-21 14:00:55,300 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d38ee9de-3e9e-4c83-8138-dfcf109b4533/bin/uautomizer-vX5HgA9Q3a/mathsat -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)] Ended with exit code 0 [2022-11-21 14:00:55,506 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d38ee9de-3e9e-4c83-8138-dfcf109b4533/bin/uautomizer-vX5HgA9Q3a/cvc4 --incremental --print-success --lang smt (21)] Forceful destruction successful, exit code 0 [2022-11-21 14:00:55,699 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d38ee9de-3e9e-4c83-8138-dfcf109b4533/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d38ee9de-3e9e-4c83-8138-dfcf109b4533/bin/uautomizer-vX5HgA9Q3a/cvc4 --incremental --print-success --lang smt [2022-11-21 14:00:55,699 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)] === [2022-11-21 14:00:55,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 14:00:55,700 INFO L85 PathProgramCache]: Analyzing trace with hash 879107445, now seen corresponding path program 1 times [2022-11-21 14:00:55,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 14:00:55,700 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [12268263] [2022-11-21 14:00:55,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 14:00:55,701 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 [2022-11-21 14:00:55,701 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d38ee9de-3e9e-4c83-8138-dfcf109b4533/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 14:00:55,702 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d38ee9de-3e9e-4c83-8138-dfcf109b4533/bin/uautomizer-vX5HgA9Q3a/mathsat -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) [2022-11-21 14:00:55,724 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d38ee9de-3e9e-4c83-8138-dfcf109b4533/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 14:00:56,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:00:56,199 INFO L263 TraceCheckSpWp]: Trace formula consists of 356 conjuncts, 47 conjunts are in the unsatisfiable core [2022-11-21 14:00:56,203 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 14:00:56,466 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 [2022-11-21 14:00:56,479 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 [2022-11-21 14:00:56,555 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:00:56,556 INFO L350 Elim1Store]: Elim1 eliminated variable 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 [2022-11-21 14:00:56,573 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:00:56,574 INFO L350 Elim1Store]: Elim1 eliminated variable 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 [2022-11-21 14:00:56,612 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-21 14:00:56,612 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 [2022-11-21 14:00:56,729 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 [2022-11-21 14:00:56,741 INFO L350 Elim1Store]: Elim1 eliminated variable 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 [2022-11-21 14:00:57,008 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 [2022-11-21 14:00:57,018 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 [2022-11-21 14:00:57,204 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 14:00:57,204 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 14:00:57,603 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-21 14:00:57,604 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 46 treesize of output 50 [2022-11-21 14:00:58,358 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 [2022-11-21 14:00:58,452 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse0 (bvadd (_ bv4 32) |c_create_sub_list_~sub#1.offset|))) (and (forall ((|v_create_sub_list_insert_sub_~sub~0#1.base_33| (_ BitVec 32))) (or (not (= (_ bv0 1) (select |c_#valid| |v_create_sub_list_insert_sub_~sub~0#1.base_33|))) (forall ((v_ArrVal_1240 (Array (_ BitVec 32) (_ BitVec 32)))) (= (select (select (store |c_#memory_$Pointer$.base| |v_create_sub_list_insert_sub_~sub~0#1.base_33| v_ArrVal_1240) |c_create_sub_list_~sub#1.base|) .cse0) |c_create_sub_list_~sub#1.base|)))) (forall ((|v_create_sub_list_insert_sub_~sub~0#1.base_33| (_ BitVec 32))) (or (not (= (_ bv0 1) (select |c_#valid| |v_create_sub_list_insert_sub_~sub~0#1.base_33|))) (forall ((v_ArrVal_1241 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (select (select (store |c_#memory_$Pointer$.offset| |v_create_sub_list_insert_sub_~sub~0#1.base_33| v_ArrVal_1241) |c_create_sub_list_~sub#1.base|) .cse0))) (bvule .cse1 (bvadd (_ bv4 32) .cse1)))))) (forall ((|v_create_sub_list_insert_sub_~sub~0#1.base_33| (_ BitVec 32))) (or (forall ((v_ArrVal_1241 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv4 32) (select (select (store |c_#memory_$Pointer$.offset| |v_create_sub_list_insert_sub_~sub~0#1.base_33| v_ArrVal_1241) |c_create_sub_list_~sub#1.base|) .cse0)) (bvadd (_ bv8 32) |c_create_sub_list_~sub#1.offset|))) (not (= (_ bv0 1) (select |c_#valid| |v_create_sub_list_insert_sub_~sub~0#1.base_33|))))))) is different from false [2022-11-21 14:00:59,112 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-21 14:00:59,113 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 [2022-11-21 14:00:59,119 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 [2022-11-21 14:00:59,132 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select 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 [2022-11-21 14:00:59,160 INFO L321 Elim1Store]: treesize reduction 18, result has 5.3 percent of original size [2022-11-21 14:00:59,160 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 [2022-11-21 14:00:59,200 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-21 14:00:59,200 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 29 treesize of output 35 [2022-11-21 14:00:59,205 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-21 14:00:59,209 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2022-11-21 14:01:00,516 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-21 14:01:00,516 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 [2022-11-21 14:01:00,916 INFO L321 Elim1Store]: treesize reduction 7, result has 30.0 percent of original size [2022-11-21 14:01:00,917 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 [2022-11-21 14:01:00,963 INFO L321 Elim1Store]: treesize reduction 7, result has 30.0 percent of original size [2022-11-21 14:01:00,964 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 [2022-11-21 14:01:01,000 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 3 not checked. [2022-11-21 14:01:01,001 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 14:01:01,001 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [12268263] [2022-11-21 14:01:01,001 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [12268263] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 14:01:01,001 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 14:01:01,001 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 18] total 29 [2022-11-21 14:01:01,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215959376] [2022-11-21 14:01:01,001 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 14:01:01,002 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-11-21 14:01:01,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 14:01:01,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-11-21 14:01:01,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=687, Unknown=2, NotChecked=106, Total=870 [2022-11-21 14:01:01,004 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) [2022-11-21 14:01:16,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 14:01:16,577 INFO L93 Difference]: Finished difference Result 210 states and 228 transitions. [2022-11-21 14:01:16,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-11-21 14:01:16,578 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 [2022-11-21 14:01:16,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 14:01:16,580 INFO L225 Difference]: With dead ends: 210 [2022-11-21 14:01:16,580 INFO L226 Difference]: Without dead ends: 210 [2022-11-21 14:01:16,581 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 51 SyntacticMatches, 3 SemanticMatches, 50 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 403 ImplicationChecksByTransitivity, 12.2s TimeCoverageRelationStatistics Valid=288, Invalid=2168, Unknown=2, NotChecked=194, Total=2652 [2022-11-21 14:01:16,582 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 238 mSDsluCounter, 639 mSDsCounter, 0 mSdLazyCounter, 1023 mSolverCounterSat, 30 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 242 SdHoareTripleChecker+Valid, 684 SdHoareTripleChecker+Invalid, 1344 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 1023 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 290 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time [2022-11-21 14:01:16,582 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [242 Valid, 684 Invalid, 1344 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 1023 Invalid, 1 Unknown, 290 Unchecked, 6.7s Time] [2022-11-21 14:01:16,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2022-11-21 14:01:16,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 165. [2022-11-21 14:01:16,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 123 states have (on average 1.2682926829268293) internal successors, (156), 147 states have internal predecessors, (156), 10 states have call successors, (10), 10 states have call predecessors, (10), 9 states have return successors, (11), 7 states have call predecessors, (11), 10 states have call successors, (11) [2022-11-21 14:01:16,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 177 transitions. [2022-11-21 14:01:16,590 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 177 transitions. Word has length 41 [2022-11-21 14:01:16,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 14:01:16,591 INFO L495 AbstractCegarLoop]: Abstraction has 165 states and 177 transitions. [2022-11-21 14:01:16,591 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) [2022-11-21 14:01:16,591 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 177 transitions. [2022-11-21 14:01:16,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-11-21 14:01:16,593 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 14:01:16,593 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] [2022-11-21 14:01:16,612 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d38ee9de-3e9e-4c83-8138-dfcf109b4533/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 14:01:16,803 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d38ee9de-3e9e-4c83-8138-dfcf109b4533/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 14:01:16,803 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)] === [2022-11-21 14:01:16,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 14:01:16,804 INFO L85 PathProgramCache]: Analyzing trace with hash 1398479560, now seen corresponding path program 1 times [2022-11-21 14:01:16,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 14:01:16,804 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [663649820] [2022-11-21 14:01:16,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 14:01:16,804 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 14:01:16,804 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d38ee9de-3e9e-4c83-8138-dfcf109b4533/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 14:01:16,805 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d38ee9de-3e9e-4c83-8138-dfcf109b4533/bin/uautomizer-vX5HgA9Q3a/mathsat -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) [2022-11-21 14:01:16,807 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d38ee9de-3e9e-4c83-8138-dfcf109b4533/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 14:01:17,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:01:17,252 INFO L263 TraceCheckSpWp]: Trace formula consists of 348 conjuncts, 29 conjunts are in the unsatisfiable core [2022-11-21 14:01:17,255 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 14:01:17,266 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 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 [2022-11-21 14:01:17,281 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 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 [2022-11-21 14:01:17,475 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 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 [2022-11-21 14:01:17,693 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-21 14:01:17,693 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 [2022-11-21 14:01:17,717 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 [2022-11-21 14:01:17,795 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-21 14:01:17,795 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 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 [2022-11-21 14:01:17,802 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 5 treesize of output 3 [2022-11-21 14:01:17,914 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:01:17,949 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-21 14:01:17,949 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 [2022-11-21 14:01:17,977 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-21 14:01:17,977 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 [2022-11-21 14:01:18,114 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 5 not checked. [2022-11-21 14:01:18,115 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 14:01:18,758 INFO L321 Elim1Store]: treesize reduction 7, result has 30.0 percent of original size [2022-11-21 14:01:18,759 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 [2022-11-21 14:01:27,103 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 14:01:27,103 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [663649820] [2022-11-21 14:01:27,103 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [663649820] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 14:01:27,103 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [9311648] [2022-11-21 14:01:27,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 14:01:27,103 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-21 14:01:27,103 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d38ee9de-3e9e-4c83-8138-dfcf109b4533/bin/uautomizer-vX5HgA9Q3a/cvc4 [2022-11-21 14:01:27,104 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d38ee9de-3e9e-4c83-8138-dfcf109b4533/bin/uautomizer-vX5HgA9Q3a/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-21 14:01:27,106 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d38ee9de-3e9e-4c83-8138-dfcf109b4533/bin/uautomizer-vX5HgA9Q3a/cvc4 --incremental --print-success --lang smt (24)] Waiting until timeout for monitored process [2022-11-21 14:01:28,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:01:28,102 INFO L263 TraceCheckSpWp]: Trace formula consists of 348 conjuncts, 44 conjunts are in the unsatisfiable core [2022-11-21 14:01:28,105 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 14:01:28,110 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 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 [2022-11-21 14:01:28,118 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 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 [2022-11-21 14:01:28,460 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 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 [2022-11-21 14:01:28,719 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-21 14:01:28,719 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 [2022-11-21 14:01:28,982 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-21 14:01:28,983 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 15 [2022-11-21 14:01:28,989 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select 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 [2022-11-21 14:01:29,652 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:01:29,686 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-21 14:01:29,687 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 23 [2022-11-21 14:01:29,712 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-21 14:01:29,712 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 [2022-11-21 14:01:29,742 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 1 proven. 16 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-21 14:01:29,742 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 14:01:30,755 INFO L321 Elim1Store]: treesize reduction 7, result has 30.0 percent of original size [2022-11-21 14:01:30,756 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 [2022-11-21 14:01:38,011 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [9311648] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 14:01:38,011 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 14:01:38,011 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 17] total 21 [2022-11-21 14:01:38,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219774342] [2022-11-21 14:01:38,011 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 14:01:38,012 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-21 14:01:38,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 14:01:38,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-21 14:01:38,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=578, Unknown=9, NotChecked=48, Total=702 [2022-11-21 14:01:38,013 INFO L87 Difference]: Start difference. First operand 165 states and 177 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) [2022-11-21 14:01:40,430 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 14:01:46,283 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 14:01:51,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 14:01:51,447 INFO L93 Difference]: Finished difference Result 264 states and 292 transitions. [2022-11-21 14:01:51,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-21 14:01:51,448 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 [2022-11-21 14:01:51,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 14:01:51,450 INFO L225 Difference]: With dead ends: 264 [2022-11-21 14:01:51,450 INFO L226 Difference]: Without dead ends: 264 [2022-11-21 14:01:51,451 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 73 SyntacticMatches, 2 SemanticMatches, 32 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 196 ImplicationChecksByTransitivity, 21.9s TimeCoverageRelationStatistics Valid=117, Invalid=932, Unknown=11, NotChecked=62, Total=1122 [2022-11-21 14:01:51,452 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 163 mSDsluCounter, 536 mSDsCounter, 0 mSdLazyCounter, 1112 mSolverCounterSat, 15 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 167 SdHoareTripleChecker+Valid, 577 SdHoareTripleChecker+Invalid, 1305 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 1112 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 176 IncrementalHoareTripleChecker+Unchecked, 8.2s IncrementalHoareTripleChecker+Time [2022-11-21 14:01:51,452 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [167 Valid, 577 Invalid, 1305 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 1112 Invalid, 2 Unknown, 176 Unchecked, 8.2s Time] [2022-11-21 14:01:51,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2022-11-21 14:01:51,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 172. [2022-11-21 14:01:51,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 128 states have (on average 1.265625) internal successors, (162), 151 states have internal predecessors, (162), 11 states have call successors, (11), 11 states have call predecessors, (11), 10 states have return successors, (13), 9 states have call predecessors, (13), 11 states have call successors, (13) [2022-11-21 14:01:51,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 186 transitions. [2022-11-21 14:01:51,461 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 186 transitions. Word has length 45 [2022-11-21 14:01:51,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 14:01:51,462 INFO L495 AbstractCegarLoop]: Abstraction has 172 states and 186 transitions. [2022-11-21 14:01:51,462 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) [2022-11-21 14:01:51,463 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 186 transitions. [2022-11-21 14:01:51,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-11-21 14:01:51,464 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 14:01:51,464 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] [2022-11-21 14:01:51,473 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d38ee9de-3e9e-4c83-8138-dfcf109b4533/bin/uautomizer-vX5HgA9Q3a/cvc4 --incremental --print-success --lang smt (24)] Forceful destruction successful, exit code 0 [2022-11-21 14:01:51,684 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d38ee9de-3e9e-4c83-8138-dfcf109b4533/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 14:01:51,873 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d38ee9de-3e9e-4c83-8138-dfcf109b4533/bin/uautomizer-vX5HgA9Q3a/cvc4 --incremental --print-success --lang smt,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d38ee9de-3e9e-4c83-8138-dfcf109b4533/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 14:01:51,873 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)] === [2022-11-21 14:01:51,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 14:01:51,873 INFO L85 PathProgramCache]: Analyzing trace with hash 1768276039, now seen corresponding path program 1 times [2022-11-21 14:01:51,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 14:01:51,874 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [918845473] [2022-11-21 14:01:51,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 14:01:51,874 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 [2022-11-21 14:01:51,874 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d38ee9de-3e9e-4c83-8138-dfcf109b4533/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 14:01:51,875 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d38ee9de-3e9e-4c83-8138-dfcf109b4533/bin/uautomizer-vX5HgA9Q3a/mathsat -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) [2022-11-21 14:01:51,877 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d38ee9de-3e9e-4c83-8138-dfcf109b4533/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 14:01:52,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:01:52,450 INFO L263 TraceCheckSpWp]: Trace formula consists of 390 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-21 14:01:52,454 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 14:01:52,465 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-21 14:01:52,544 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-21 14:01:52,544 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 [2022-11-21 14:01:52,604 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select 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 [2022-11-21 14:01:52,748 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-21 14:01:52,948 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:01:52,949 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 [2022-11-21 14:01:53,057 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 [2022-11-21 14:01:53,072 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-21 14:01:53,222 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-21 14:01:53,222 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 [2022-11-21 14:01:53,402 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 2 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 3 not checked. [2022-11-21 14:01:53,402 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 14:01:53,754 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 14:01:53,754 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [918845473] [2022-11-21 14:01:53,754 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [918845473] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 14:01:53,755 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [150658316] [2022-11-21 14:01:53,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 14:01:53,755 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-21 14:01:53,755 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d38ee9de-3e9e-4c83-8138-dfcf109b4533/bin/uautomizer-vX5HgA9Q3a/cvc4 [2022-11-21 14:01:53,757 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d38ee9de-3e9e-4c83-8138-dfcf109b4533/bin/uautomizer-vX5HgA9Q3a/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-21 14:01:53,759 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d38ee9de-3e9e-4c83-8138-dfcf109b4533/bin/uautomizer-vX5HgA9Q3a/cvc4 --incremental --print-success --lang smt (26)] Waiting until timeout for monitored process [2022-11-21 14:01:55,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:01:55,750 INFO L263 TraceCheckSpWp]: Trace formula consists of 390 conjuncts, 22 conjunts are in the unsatisfiable core [2022-11-21 14:01:55,752 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 14:01:55,824 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-21 14:01:55,825 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 [2022-11-21 14:01:55,842 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 [2022-11-21 14:01:55,934 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:01:55,967 INFO L321 Elim1Store]: treesize reduction 23, result has 32.4 percent of original size [2022-11-21 14:01:55,968 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 [2022-11-21 14:01:56,143 INFO L321 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2022-11-21 14:01:56,143 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 [2022-11-21 14:01:56,329 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 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 [2022-11-21 14:01:56,559 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:01:56,598 INFO L321 Elim1Store]: treesize reduction 23, result has 32.4 percent of original size [2022-11-21 14:01:56,598 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 30 treesize of output 45 [2022-11-21 14:01:56,671 INFO L321 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2022-11-21 14:01:56,671 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 [2022-11-21 14:01:56,805 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 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 [2022-11-21 14:01:57,006 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:01:57,048 INFO L321 Elim1Store]: treesize reduction 23, result has 32.4 percent of original size [2022-11-21 14:01:57,048 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 30 treesize of output 45 [2022-11-21 14:01:57,686 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-11-21 14:01:57,687 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 14:01:57,868 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [150658316] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 14:01:57,868 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 14:01:57,868 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9] total 20 [2022-11-21 14:01:57,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851889588] [2022-11-21 14:01:57,869 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 14:01:57,869 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-21 14:01:57,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 14:01:57,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-21 14:01:57,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=499, Unknown=12, NotChecked=46, Total=650 [2022-11-21 14:01:57,870 INFO L87 Difference]: Start difference. First operand 172 states and 186 transitions. Second operand has 21 states, 18 states have (on average 2.888888888888889) internal successors, (52), 17 states have internal predecessors, (52), 6 states have call successors, (8), 7 states have call predecessors, (8), 4 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2022-11-21 14:02:01,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 14:02:01,041 INFO L93 Difference]: Finished difference Result 273 states and 301 transitions. [2022-11-21 14:02:01,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-21 14:02:01,048 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 18 states have (on average 2.888888888888889) internal successors, (52), 17 states have internal predecessors, (52), 6 states have call successors, (8), 7 states have call predecessors, (8), 4 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) Word has length 51 [2022-11-21 14:02:01,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 14:02:01,051 INFO L225 Difference]: With dead ends: 273 [2022-11-21 14:02:01,052 INFO L226 Difference]: Without dead ends: 273 [2022-11-21 14:02:01,053 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 83 SyntacticMatches, 7 SemanticMatches, 31 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 247 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=183, Invalid=798, Unknown=15, NotChecked=60, Total=1056 [2022-11-21 14:02:01,054 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 555 mSDsluCounter, 312 mSDsCounter, 0 mSdLazyCounter, 511 mSolverCounterSat, 97 mSolverCounterUnsat, 171 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 555 SdHoareTripleChecker+Valid, 347 SdHoareTripleChecker+Invalid, 968 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 511 IncrementalHoareTripleChecker+Invalid, 171 IncrementalHoareTripleChecker+Unknown, 189 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-11-21 14:02:01,054 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [555 Valid, 347 Invalid, 968 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 511 Invalid, 171 Unknown, 189 Unchecked, 2.5s Time] [2022-11-21 14:02:01,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2022-11-21 14:02:01,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 193. [2022-11-21 14:02:01,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193 states, 144 states have (on average 1.2916666666666667) internal successors, (186), 167 states have internal predecessors, (186), 14 states have call successors, (14), 12 states have call predecessors, (14), 12 states have return successors, (22), 13 states have call predecessors, (22), 14 states have call successors, (22) [2022-11-21 14:02:01,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 222 transitions. [2022-11-21 14:02:01,066 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 222 transitions. Word has length 51 [2022-11-21 14:02:01,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 14:02:01,067 INFO L495 AbstractCegarLoop]: Abstraction has 193 states and 222 transitions. [2022-11-21 14:02:01,067 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 18 states have (on average 2.888888888888889) internal successors, (52), 17 states have internal predecessors, (52), 6 states have call successors, (8), 7 states have call predecessors, (8), 4 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2022-11-21 14:02:01,068 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 222 transitions. [2022-11-21 14:02:01,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-11-21 14:02:01,069 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 14:02:01,069 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] [2022-11-21 14:02:01,085 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d38ee9de-3e9e-4c83-8138-dfcf109b4533/bin/uautomizer-vX5HgA9Q3a/cvc4 --incremental --print-success --lang smt (26)] Forceful destruction successful, exit code 0 [2022-11-21 14:02:01,291 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d38ee9de-3e9e-4c83-8138-dfcf109b4533/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 14:02:01,480 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d38ee9de-3e9e-4c83-8138-dfcf109b4533/bin/uautomizer-vX5HgA9Q3a/cvc4 --incremental --print-success --lang smt,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d38ee9de-3e9e-4c83-8138-dfcf109b4533/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 14:02:01,481 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)] === [2022-11-21 14:02:01,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 14:02:01,481 INFO L85 PathProgramCache]: Analyzing trace with hash 1768276040, now seen corresponding path program 1 times [2022-11-21 14:02:01,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 14:02:01,481 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1973701075] [2022-11-21 14:02:01,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 14:02:01,481 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 [2022-11-21 14:02:01,482 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d38ee9de-3e9e-4c83-8138-dfcf109b4533/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 14:02:01,482 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d38ee9de-3e9e-4c83-8138-dfcf109b4533/bin/uautomizer-vX5HgA9Q3a/mathsat -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) [2022-11-21 14:02:01,485 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d38ee9de-3e9e-4c83-8138-dfcf109b4533/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 14:02:02,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:02:02,023 INFO L263 TraceCheckSpWp]: Trace formula consists of 390 conjuncts, 29 conjunts are in the unsatisfiable core [2022-11-21 14:02:02,026 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 14:02:02,042 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 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 [2022-11-21 14:02:02,052 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 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 [2022-11-21 14:02:02,091 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:02:02,092 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 [2022-11-21 14:02:02,117 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-21 14:02:02,118 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-11-21 14:02:02,176 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select 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 [2022-11-21 14:02:02,307 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 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 [2022-11-21 14:02:02,512 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:02:02,514 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 [2022-11-21 14:02:02,655 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 [2022-11-21 14:02:02,669 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 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 [2022-11-21 14:02:02,878 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-21 14:02:02,879 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 [2022-11-21 14:02:03,258 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 2 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 3 not checked. [2022-11-21 14:02:03,258 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 14:02:03,934 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 14:02:03,934 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1973701075] [2022-11-21 14:02:03,934 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1973701075] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 14:02:03,934 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [967043125] [2022-11-21 14:02:03,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 14:02:03,935 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-21 14:02:03,935 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d38ee9de-3e9e-4c83-8138-dfcf109b4533/bin/uautomizer-vX5HgA9Q3a/cvc4 [2022-11-21 14:02:03,936 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d38ee9de-3e9e-4c83-8138-dfcf109b4533/bin/uautomizer-vX5HgA9Q3a/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-21 14:02:03,938 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d38ee9de-3e9e-4c83-8138-dfcf109b4533/bin/uautomizer-vX5HgA9Q3a/cvc4 --incremental --print-success --lang smt (28)] Waiting until timeout for monitored process [2022-11-21 14:02:06,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:02:06,289 INFO L263 TraceCheckSpWp]: Trace formula consists of 390 conjuncts, 28 conjunts are in the unsatisfiable core [2022-11-21 14:02:06,293 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 14:02:06,302 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 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 [2022-11-21 14:02:06,319 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 [2022-11-21 14:02:06,430 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:02:06,431 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 [2022-11-21 14:02:06,557 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select 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 [2022-11-21 14:02:06,755 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 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 [2022-11-21 14:02:06,974 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:02:06,976 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 [2022-11-21 14:02:07,012 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select 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 [2022-11-21 14:02:07,148 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 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 [2022-11-21 14:02:07,331 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:02:07,333 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 [2022-11-21 14:02:07,581 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-11-21 14:02:07,581 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 14:02:07,975 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [967043125] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 14:02:07,975 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 14:02:07,975 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 9] total 19 [2022-11-21 14:02:07,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415370802] [2022-11-21 14:02:07,975 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 14:02:07,976 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-21 14:02:07,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 14:02:07,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-21 14:02:07,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=473, Unknown=7, NotChecked=44, Total=600 [2022-11-21 14:02:07,976 INFO L87 Difference]: Start difference. First operand 193 states and 222 transitions. Second operand has 20 states, 17 states have (on average 3.0) internal successors, (51), 16 states have internal predecessors, (51), 6 states have call successors, (8), 7 states have call predecessors, (8), 4 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2022-11-21 14:02:13,833 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 14:02:16,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 14:02:16,100 INFO L93 Difference]: Finished difference Result 409 states and 448 transitions. [2022-11-21 14:02:16,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-21 14:02:16,101 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 17 states have (on average 3.0) internal successors, (51), 16 states have internal predecessors, (51), 6 states have call successors, (8), 7 states have call predecessors, (8), 4 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) Word has length 51 [2022-11-21 14:02:16,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 14:02:16,103 INFO L225 Difference]: With dead ends: 409 [2022-11-21 14:02:16,104 INFO L226 Difference]: Without dead ends: 409 [2022-11-21 14:02:16,104 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 84 SyntacticMatches, 5 SemanticMatches, 32 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 221 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=176, Invalid=869, Unknown=15, NotChecked=62, Total=1122 [2022-11-21 14:02:16,105 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 476 mSDsluCounter, 445 mSDsCounter, 0 mSdLazyCounter, 770 mSolverCounterSat, 76 mSolverCounterUnsat, 259 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 478 SdHoareTripleChecker+Valid, 487 SdHoareTripleChecker+Invalid, 1236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 770 IncrementalHoareTripleChecker+Invalid, 259 IncrementalHoareTripleChecker+Unknown, 131 IncrementalHoareTripleChecker+Unchecked, 7.0s IncrementalHoareTripleChecker+Time [2022-11-21 14:02:16,106 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [478 Valid, 487 Invalid, 1236 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 770 Invalid, 259 Unknown, 131 Unchecked, 7.0s Time] [2022-11-21 14:02:16,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 409 states. [2022-11-21 14:02:16,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 409 to 306. [2022-11-21 14:02:16,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 306 states, 239 states have (on average 1.213389121338912) internal successors, (290), 264 states have internal predecessors, (290), 23 states have call successors, (23), 22 states have call predecessors, (23), 21 states have return successors, (32), 19 states have call predecessors, (32), 23 states have call successors, (32) [2022-11-21 14:02:16,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 306 states to 306 states and 345 transitions. [2022-11-21 14:02:16,122 INFO L78 Accepts]: Start accepts. Automaton has 306 states and 345 transitions. Word has length 51 [2022-11-21 14:02:16,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 14:02:16,122 INFO L495 AbstractCegarLoop]: Abstraction has 306 states and 345 transitions. [2022-11-21 14:02:16,122 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 17 states have (on average 3.0) internal successors, (51), 16 states have internal predecessors, (51), 6 states have call successors, (8), 7 states have call predecessors, (8), 4 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2022-11-21 14:02:16,123 INFO L276 IsEmpty]: Start isEmpty. Operand 306 states and 345 transitions. [2022-11-21 14:02:16,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-11-21 14:02:16,124 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 14:02:16,124 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] [2022-11-21 14:02:16,136 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d38ee9de-3e9e-4c83-8138-dfcf109b4533/bin/uautomizer-vX5HgA9Q3a/cvc4 --incremental --print-success --lang smt (28)] Forceful destruction successful, exit code 0 [2022-11-21 14:02:16,349 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d38ee9de-3e9e-4c83-8138-dfcf109b4533/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 14:02:16,536 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d38ee9de-3e9e-4c83-8138-dfcf109b4533/bin/uautomizer-vX5HgA9Q3a/cvc4 --incremental --print-success --lang smt,27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d38ee9de-3e9e-4c83-8138-dfcf109b4533/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 14:02:16,537 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)] === [2022-11-21 14:02:16,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 14:02:16,537 INFO L85 PathProgramCache]: Analyzing trace with hash 636971300, now seen corresponding path program 2 times [2022-11-21 14:02:16,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 14:02:16,538 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1286205124] [2022-11-21 14:02:16,538 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-21 14:02:16,538 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 14:02:16,538 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d38ee9de-3e9e-4c83-8138-dfcf109b4533/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 14:02:16,539 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d38ee9de-3e9e-4c83-8138-dfcf109b4533/bin/uautomizer-vX5HgA9Q3a/mathsat -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) [2022-11-21 14:02:16,540 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d38ee9de-3e9e-4c83-8138-dfcf109b4533/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 14:02:17,354 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-21 14:02:17,354 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 14:02:17,380 INFO L263 TraceCheckSpWp]: Trace formula consists of 438 conjuncts, 99 conjunts are in the unsatisfiable core [2022-11-21 14:02:17,387 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 14:02:17,405 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 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 [2022-11-21 14:02:17,492 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 [2022-11-21 14:02:17,538 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:02:17,539 INFO L350 Elim1Store]: Elim1 eliminated variable 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 [2022-11-21 14:02:17,581 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-21 14:02:17,582 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-11-21 14:02:17,679 INFO L350 Elim1Store]: Elim1 eliminated variable 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 [2022-11-21 14:02:18,005 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 [2022-11-21 14:02:18,157 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-21 14:02:18,157 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 [2022-11-21 14:02:18,179 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select 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 [2022-11-21 14:02:18,344 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-21 14:02:18,344 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 [2022-11-21 14:02:20,115 INFO L321 Elim1Store]: treesize reduction 27, result has 48.1 percent of original size [2022-11-21 14:02:20,115 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 [2022-11-21 14:02:20,357 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 [2022-11-21 14:02:20,513 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-21 14:02:20,513 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 [2022-11-21 14:02:20,722 INFO L350 Elim1Store]: Elim1 eliminated variable 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 [2022-11-21 14:02:20,740 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 [2022-11-21 14:02:22,341 INFO L350 Elim1Store]: Elim1 eliminated variable 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 [2022-11-21 14:02:22,400 INFO L321 Elim1Store]: treesize reduction 24, result has 38.5 percent of original size [2022-11-21 14:02:22,403 INFO L350 Elim1Store]: Elim1 eliminated variable 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 [2022-11-21 14:02:22,728 INFO L321 Elim1Store]: treesize reduction 56, result has 35.6 percent of original size [2022-11-21 14:02:22,728 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 [2022-11-21 14:02:22,758 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 [2022-11-21 14:02:22,976 INFO L350 Elim1Store]: Elim1 eliminated variable 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 [2022-11-21 14:02:23,636 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 [2022-11-21 14:02:23,652 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 [2022-11-21 14:02:24,007 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 3 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 14:02:24,008 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 14:02:27,328 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select 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 [2022-11-21 14:02:37,980 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 14:02:37,981 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1286205124] [2022-11-21 14:02:37,981 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1286205124] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 14:02:37,981 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1849815761] [2022-11-21 14:02:37,982 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-21 14:02:37,982 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-21 14:02:37,982 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d38ee9de-3e9e-4c83-8138-dfcf109b4533/bin/uautomizer-vX5HgA9Q3a/cvc4 [2022-11-21 14:02:37,988 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d38ee9de-3e9e-4c83-8138-dfcf109b4533/bin/uautomizer-vX5HgA9Q3a/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-21 14:02:38,014 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d38ee9de-3e9e-4c83-8138-dfcf109b4533/bin/uautomizer-vX5HgA9Q3a/cvc4 --incremental --print-success --lang smt (30)] Waiting until timeout for monitored process [2022-11-21 14:02:38,891 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-21 14:02:38,891 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [634455013] [2022-11-21 14:02:38,892 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-21 14:02:38,892 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 14:02:38,892 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d38ee9de-3e9e-4c83-8138-dfcf109b4533/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 14:02:38,896 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d38ee9de-3e9e-4c83-8138-dfcf109b4533/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 14:02:38,907 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d38ee9de-3e9e-4c83-8138-dfcf109b4533/bin/uautomizer-vX5HgA9Q3a/cvc4 --incremental --print-success --lang smt (30)] Ended with exit code 1 [2022-11-21 14:02:38,927 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d38ee9de-3e9e-4c83-8138-dfcf109b4533/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2022-11-21 14:02:40,937 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-21 14:02:40,937 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 14:02:40,949 INFO L263 TraceCheckSpWp]: Trace formula consists of 438 conjuncts, 116 conjunts are in the unsatisfiable core [2022-11-21 14:02:40,959 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 14:02:40,964 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 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 [2022-11-21 14:02:40,972 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-21 14:02:41,559 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 [2022-11-21 14:02:41,569 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-21 14:02:41,839 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select 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 [2022-11-21 14:02:41,851 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:02:41,851 INFO L350 Elim1Store]: Elim1 eliminated variable 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 [2022-11-21 14:02:41,864 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:02:41,865 INFO L350 Elim1Store]: Elim1 eliminated variable 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 [2022-11-21 14:02:42,113 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-21 14:02:42,113 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 [2022-11-21 14:02:42,411 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 16 treesize of output 18 [2022-11-21 14:02:42,423 INFO L350 Elim1Store]: Elim1 eliminated variable 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 [2022-11-21 14:02:45,278 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 65 treesize of output 36 [2022-11-21 14:02:45,378 INFO L321 Elim1Store]: treesize reduction 46, result has 19.3 percent of original size [2022-11-21 14:02:45,378 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 [2022-11-21 14:02:45,388 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 [2022-11-21 14:02:45,408 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 [2022-11-21 14:02:45,428 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 [2022-11-21 14:02:45,528 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-21 14:02:45,528 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 [2022-11-21 14:02:45,600 INFO L350 Elim1Store]: Elim1 eliminated variable 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 [2022-11-21 14:02:45,640 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 [2022-11-21 14:02:48,495 INFO L350 Elim1Store]: Elim1 eliminated variable 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 [2022-11-21 14:02:48,553 INFO L321 Elim1Store]: treesize reduction 24, result has 38.5 percent of original size [2022-11-21 14:02:48,554 INFO L350 Elim1Store]: Elim1 eliminated variable 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 [2022-11-21 14:02:48,689 INFO L321 Elim1Store]: treesize reduction 56, result has 35.6 percent of original size [2022-11-21 14:02:48,690 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 [2022-11-21 14:02:49,047 INFO L350 Elim1Store]: Elim1 eliminated variable 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 [2022-11-21 14:02:49,682 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 [2022-11-21 14:02:50,000 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 3 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 14:02:50,001 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 14:02:54,943 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [634455013] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 14:02:54,943 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 14:02:54,944 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 55 [2022-11-21 14:02:54,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714810413] [2022-11-21 14:02:54,944 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 14:02:54,945 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2022-11-21 14:02:54,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 14:02:54,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2022-11-21 14:02:54,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=234, Invalid=4476, Unknown=120, NotChecked=0, Total=4830 [2022-11-21 14:02:54,947 INFO L87 Difference]: Start difference. First operand 306 states and 345 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) [2022-11-21 14:03:25,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 14:03:25,197 INFO L93 Difference]: Finished difference Result 307 states and 343 transitions. [2022-11-21 14:03:25,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-11-21 14:03:25,198 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 [2022-11-21 14:03:25,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 14:03:25,202 INFO L225 Difference]: With dead ends: 307 [2022-11-21 14:03:25,202 INFO L226 Difference]: Without dead ends: 307 [2022-11-21 14:03:25,205 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 59 SyntacticMatches, 3 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2898 ImplicationChecksByTransitivity, 44.8s TimeCoverageRelationStatistics Valid=694, Invalid=9405, Unknown=203, NotChecked=0, Total=10302 [2022-11-21 14:03:25,209 INFO L413 NwaCegarLoop]: 66 mSDtfsCounter, 113 mSDsluCounter, 1468 mSDsCounter, 0 mSdLazyCounter, 2235 mSolverCounterSat, 42 mSolverCounterUnsat, 51 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 1534 SdHoareTripleChecker+Invalid, 2328 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 2235 IncrementalHoareTripleChecker+Invalid, 51 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.1s IncrementalHoareTripleChecker+Time [2022-11-21 14:03:25,212 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [113 Valid, 1534 Invalid, 2328 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 2235 Invalid, 51 Unknown, 0 Unchecked, 13.1s Time] [2022-11-21 14:03:25,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states. [2022-11-21 14:03:25,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 306. [2022-11-21 14:03:25,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 306 states, 239 states have (on average 1.205020920502092) internal successors, (288), 264 states have internal predecessors, (288), 23 states have call successors, (23), 22 states have call predecessors, (23), 21 states have return successors, (32), 19 states have call predecessors, (32), 23 states have call successors, (32) [2022-11-21 14:03:25,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 306 states to 306 states and 343 transitions. [2022-11-21 14:03:25,235 INFO L78 Accepts]: Start accepts. Automaton has 306 states and 343 transitions. Word has length 51 [2022-11-21 14:03:25,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 14:03:25,235 INFO L495 AbstractCegarLoop]: Abstraction has 306 states and 343 transitions. [2022-11-21 14:03:25,236 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) [2022-11-21 14:03:25,236 INFO L276 IsEmpty]: Start isEmpty. Operand 306 states and 343 transitions. [2022-11-21 14:03:25,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-11-21 14:03:25,237 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 14:03:25,237 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] [2022-11-21 14:03:25,257 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d38ee9de-3e9e-4c83-8138-dfcf109b4533/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2022-11-21 14:03:25,471 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d38ee9de-3e9e-4c83-8138-dfcf109b4533/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (29)] Forceful destruction successful, exit code 0 [2022-11-21 14:03:25,657 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d38ee9de-3e9e-4c83-8138-dfcf109b4533/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d38ee9de-3e9e-4c83-8138-dfcf109b4533/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 14:03:25,657 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)] === [2022-11-21 14:03:25,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 14:03:25,658 INFO L85 PathProgramCache]: Analyzing trace with hash 636971301, now seen corresponding path program 2 times [2022-11-21 14:03:25,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 14:03:25,659 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [954749711] [2022-11-21 14:03:25,659 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-21 14:03:25,659 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 [2022-11-21 14:03:25,659 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d38ee9de-3e9e-4c83-8138-dfcf109b4533/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 14:03:25,661 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d38ee9de-3e9e-4c83-8138-dfcf109b4533/bin/uautomizer-vX5HgA9Q3a/mathsat -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) [2022-11-21 14:03:25,671 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d38ee9de-3e9e-4c83-8138-dfcf109b4533/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 14:03:26,573 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-21 14:03:26,573 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 14:03:26,601 INFO L263 TraceCheckSpWp]: Trace formula consists of 438 conjuncts, 122 conjunts are in the unsatisfiable core [2022-11-21 14:03:26,609 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 14:03:26,614 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-21 14:03:26,700 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 [2022-11-21 14:03:26,750 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:03:26,751 INFO L350 Elim1Store]: Elim1 eliminated variable 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 [2022-11-21 14:03:26,778 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-21 14:03:26,778 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 [2022-11-21 14:03:26,877 INFO L350 Elim1Store]: Elim1 eliminated variable 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 [2022-11-21 14:03:27,232 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 [2022-11-21 14:03:27,376 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-21 14:03:27,376 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 [2022-11-21 14:03:27,386 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select 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 [2022-11-21 14:03:27,561 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-21 14:03:27,561 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 [2022-11-21 14:03:28,588 INFO L321 Elim1Store]: treesize reduction 27, result has 48.1 percent of original size [2022-11-21 14:03:28,589 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 [2022-11-21 14:03:28,793 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 [2022-11-21 14:03:28,944 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-21 14:03:28,944 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 [2022-11-21 14:03:28,967 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 [2022-11-21 14:03:29,175 INFO L350 Elim1Store]: Elim1 eliminated variable 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 [2022-11-21 14:03:29,216 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 [2022-11-21 14:03:30,061 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 [2022-11-21 14:03:30,303 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-21 14:03:30,303 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 [2022-11-21 14:03:30,324 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select 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 [2022-11-21 14:03:30,639 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-21 14:03:30,640 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 [2022-11-21 14:03:30,931 INFO L321 Elim1Store]: treesize reduction 17, result has 46.9 percent of original size [2022-11-21 14:03:30,932 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 38 [2022-11-21 14:03:30,939 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 7 treesize of output 3 [2022-11-21 14:03:31,343 INFO L350 Elim1Store]: Elim1 eliminated variable 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 [2022-11-21 14:03:31,411 INFO L321 Elim1Store]: treesize reduction 24, result has 38.5 percent of original size [2022-11-21 14:03:31,412 INFO L350 Elim1Store]: Elim1 eliminated variable 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 [2022-11-21 14:03:31,823 INFO L321 Elim1Store]: treesize reduction 12, result has 52.0 percent of original size [2022-11-21 14:03:31,823 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 [2022-11-21 14:03:31,849 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 [2022-11-21 14:03:32,130 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 32 treesize of output 30 [2022-11-21 14:03:32,143 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 [2022-11-21 14:03:32,886 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 [2022-11-21 14:03:32,925 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-21 14:03:33,430 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 3 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 14:03:33,430 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 14:03:37,806 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-21 14:03:37,806 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 [2022-11-21 14:03:37,862 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-21 14:03:37,862 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 [2022-11-21 14:03:37,880 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select 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 [2022-11-21 14:03:37,896 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select 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 [2022-11-21 14:03:37,936 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select 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 [2022-11-21 14:03:38,709 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-21 14:03:38,710 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 [2022-11-21 14:03:38,717 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-21 14:03:38,793 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-21 14:03:38,793 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 [2022-11-21 14:03:38,840 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select 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 [2022-11-21 14:03:38,860 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select 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 [2022-11-21 14:04:50,087 WARN L233 SmtUtils]: Spent 54.60s on a formula simplification. DAG size of input: 114 DAG size of output: 63 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-21 14:04:50,090 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 14:04:50,090 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [954749711] [2022-11-21 14:04:50,090 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [954749711] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 14:04:50,090 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [239902621] [2022-11-21 14:04:50,090 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-21 14:04:50,090 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-21 14:04:50,091 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d38ee9de-3e9e-4c83-8138-dfcf109b4533/bin/uautomizer-vX5HgA9Q3a/cvc4 [2022-11-21 14:04:50,093 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d38ee9de-3e9e-4c83-8138-dfcf109b4533/bin/uautomizer-vX5HgA9Q3a/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-21 14:04:50,094 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d38ee9de-3e9e-4c83-8138-dfcf109b4533/bin/uautomizer-vX5HgA9Q3a/cvc4 --incremental --print-success --lang smt (33)] Waiting until timeout for monitored process [2022-11-21 14:04:53,180 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-21 14:04:53,180 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 14:04:53,258 INFO L263 TraceCheckSpWp]: Trace formula consists of 438 conjuncts, 137 conjunts are in the unsatisfiable core [2022-11-21 14:04:53,267 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 14:04:53,276 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 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 [2022-11-21 14:04:53,347 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 [2022-11-21 14:04:53,375 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 [2022-11-21 14:04:53,741 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:04:53,742 INFO L350 Elim1Store]: Elim1 eliminated variable 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 [2022-11-21 14:04:53,763 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:04:53,763 INFO L350 Elim1Store]: Elim1 eliminated variable 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 [2022-11-21 14:04:53,828 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-21 14:04:53,828 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 [2022-11-21 14:04:54,256 INFO L350 Elim1Store]: Elim1 eliminated variable 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 [2022-11-21 14:04:54,294 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-21 14:04:58,137 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 78 treesize of output 43 [2022-11-21 14:04:58,238 INFO L321 Elim1Store]: treesize reduction 46, result has 19.3 percent of original size [2022-11-21 14:04:58,239 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 [2022-11-21 14:04:58,250 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 [2022-11-21 14:04:58,261 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:04:58,262 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 [2022-11-21 14:04:58,281 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 [2022-11-21 14:04:58,432 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-21 14:04:58,432 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 [2022-11-21 14:04:58,465 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 [2022-11-21 14:04:58,648 INFO L350 Elim1Store]: Elim1 eliminated variable 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 [2022-11-21 14:04:58,672 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 [2022-11-21 14:04:59,170 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 [2022-11-21 14:04:59,309 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-21 14:04:59,310 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 [2022-11-21 14:04:59,338 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select 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 [2022-11-21 14:04:59,626 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-21 14:04:59,626 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 [2022-11-21 14:04:59,990 INFO L321 Elim1Store]: treesize reduction 17, result has 46.9 percent of original size [2022-11-21 14:04:59,990 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 38 [2022-11-21 14:05:00,025 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select 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 [2022-11-21 14:05:00,483 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 23 [2022-11-21 14:05:00,576 INFO L321 Elim1Store]: treesize reduction 24, result has 38.5 percent of original size [2022-11-21 14:05:00,576 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 50 treesize of output 55 [2022-11-21 14:05:00,773 INFO L321 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2022-11-21 14:05:00,773 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 [2022-11-21 14:05:00,858 INFO L321 Elim1Store]: treesize reduction 12, result has 52.0 percent of original size [2022-11-21 14:05:00,858 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 [2022-11-21 14:05:01,367 INFO L350 Elim1Store]: Elim1 eliminated variable 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 [2022-11-21 14:05:01,403 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 [2022-11-21 14:05:02,355 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-21 14:05:02,356 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 [2022-11-21 14:05:02,371 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-21 14:05:02,372 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 [2022-11-21 14:05:03,638 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 3 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 14:05:03,638 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 14:05:09,493 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-21 14:05:09,493 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 [2022-11-21 14:05:09,578 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-21 14:05:09,579 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 [2022-11-21 14:05:09,600 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select 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 [2022-11-21 14:05:09,617 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select 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 [2022-11-21 14:05:09,647 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select 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 [2022-11-21 14:05:17,220 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2022-11-21 14:05:17,861 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 14 treesize of output 10 [2022-11-21 14:05:18,095 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2022-11-21 14:05:18,145 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2022-11-21 14:05:18,248 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select 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 [2022-11-21 14:05:18,547 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select 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 [2022-11-21 14:05:18,820 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select 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 [2022-11-21 14:05:18,995 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2022-11-21 14:05:19,035 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2022-11-21 14:05:19,066 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select 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 [2022-11-21 14:05:19,099 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select 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 [2022-11-21 14:05:19,136 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 31 [2022-11-21 14:05:19,196 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select 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 [2022-11-21 14:05:19,329 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select 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 [2022-11-21 14:05:19,502 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select 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 [2022-11-21 14:05:19,715 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select 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 [2022-11-21 14:05:19,756 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2022-11-21 14:05:19,858 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2022-11-21 14:05:19,909 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select 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 [2022-11-21 14:05:20,063 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2022-11-21 14:05:20,528 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select 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 [2022-11-21 14:05:20,561 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2022-11-21 14:05:20,603 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select 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 [2022-11-21 14:05:20,632 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2022-11-21 14:05:20,665 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 43 treesize of output 31 [2022-11-21 14:05:20,714 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select 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 [2022-11-21 14:05:20,950 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 29 treesize of output 21 [2022-11-21 14:05:21,524 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select 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 [2022-11-21 14:05:21,741 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2022-11-21 14:05:21,789 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select 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 [2022-11-21 14:05:21,892 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select 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 [2022-11-21 14:05:22,191 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 14 treesize of output 10 [2022-11-21 14:05:22,468 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select 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 [2022-11-21 14:05:22,649 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select 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 [2022-11-21 14:05:22,698 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 14 treesize of output 10 [2022-11-21 14:05:22,730 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select 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 [2022-11-21 14:05:22,761 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select 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 [2022-11-21 14:05:22,798 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 31 [2022-11-21 14:05:22,859 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select 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 [2022-11-21 14:05:23,036 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-21 14:05:23,037 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 [2022-11-21 14:05:23,114 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-21 14:05:23,115 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 [2022-11-21 14:05:23,137 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 438 treesize of output 374 [2022-11-21 14:05:23,155 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 374 treesize of output 342 [2022-11-21 14:05:23,193 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 178 treesize of output 162 [2022-11-21 14:05:26,031 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 [2022-11-21 14:05:26,056 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [239902621] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 14:05:26,056 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 14:05:26,057 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 46 [2022-11-21 14:05:26,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388061089] [2022-11-21 14:05:26,057 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 14:05:26,058 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-11-21 14:05:26,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 14:05:26,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-11-21 14:05:26,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=188, Invalid=3220, Unknown=18, NotChecked=114, Total=3540 [2022-11-21 14:05:26,060 INFO L87 Difference]: Start difference. First operand 306 states and 343 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) [2022-11-21 14:06:17,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 14:06:17,104 INFO L93 Difference]: Finished difference Result 308 states and 343 transitions. [2022-11-21 14:06:17,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-11-21 14:06:17,105 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 [2022-11-21 14:06:17,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 14:06:17,108 INFO L225 Difference]: With dead ends: 308 [2022-11-21 14:06:17,108 INFO L226 Difference]: Without dead ends: 308 [2022-11-21 14:06:17,110 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 65 SyntacticMatches, 7 SemanticMatches, 91 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 2131 ImplicationChecksByTransitivity, 121.5s TimeCoverageRelationStatistics Valid=647, Invalid=7684, Unknown=45, NotChecked=180, Total=8556 [2022-11-21 14:06:17,111 INFO L413 NwaCegarLoop]: 70 mSDtfsCounter, 128 mSDsluCounter, 1587 mSDsCounter, 0 mSdLazyCounter, 2281 mSolverCounterSat, 49 mSolverCounterUnsat, 32 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 1657 SdHoareTripleChecker+Invalid, 2362 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 2281 IncrementalHoareTripleChecker+Invalid, 32 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.7s IncrementalHoareTripleChecker+Time [2022-11-21 14:06:17,111 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [128 Valid, 1657 Invalid, 2362 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 2281 Invalid, 32 Unknown, 0 Unchecked, 17.7s Time] [2022-11-21 14:06:17,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2022-11-21 14:06:17,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 306. [2022-11-21 14:06:17,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 306 states, 239 states have (on average 1.1966527196652719) internal successors, (286), 264 states have internal predecessors, (286), 23 states have call successors, (23), 22 states have call predecessors, (23), 21 states have return successors, (32), 19 states have call predecessors, (32), 23 states have call successors, (32) [2022-11-21 14:06:17,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 306 states to 306 states and 341 transitions. [2022-11-21 14:06:17,123 INFO L78 Accepts]: Start accepts. Automaton has 306 states and 341 transitions. Word has length 51 [2022-11-21 14:06:17,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 14:06:17,123 INFO L495 AbstractCegarLoop]: Abstraction has 306 states and 341 transitions. [2022-11-21 14:06:17,124 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) [2022-11-21 14:06:17,124 INFO L276 IsEmpty]: Start isEmpty. Operand 306 states and 341 transitions. [2022-11-21 14:06:17,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-11-21 14:06:17,125 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 14:06:17,125 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] [2022-11-21 14:06:17,148 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d38ee9de-3e9e-4c83-8138-dfcf109b4533/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 14:06:17,352 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d38ee9de-3e9e-4c83-8138-dfcf109b4533/bin/uautomizer-vX5HgA9Q3a/cvc4 --incremental --print-success --lang smt (33)] Forceful destruction successful, exit code 0 [2022-11-21 14:06:17,544 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d38ee9de-3e9e-4c83-8138-dfcf109b4533/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d38ee9de-3e9e-4c83-8138-dfcf109b4533/bin/uautomizer-vX5HgA9Q3a/cvc4 --incremental --print-success --lang smt [2022-11-21 14:06:17,544 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)] === [2022-11-21 14:06:17,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 14:06:17,544 INFO L85 PathProgramCache]: Analyzing trace with hash 937684793, now seen corresponding path program 1 times [2022-11-21 14:06:17,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 14:06:17,545 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [429249177] [2022-11-21 14:06:17,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 14:06:17,545 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 [2022-11-21 14:06:17,545 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d38ee9de-3e9e-4c83-8138-dfcf109b4533/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 14:06:17,546 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d38ee9de-3e9e-4c83-8138-dfcf109b4533/bin/uautomizer-vX5HgA9Q3a/mathsat -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) [2022-11-21 14:06:17,547 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d38ee9de-3e9e-4c83-8138-dfcf109b4533/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 14:06:17,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:06:17,965 INFO L263 TraceCheckSpWp]: Trace formula consists of 421 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-21 14:06:17,967 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 14:06:18,424 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 25 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-21 14:06:18,424 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 14:06:18,840 INFO L321 Elim1Store]: treesize reduction 7, result has 30.0 percent of original size [2022-11-21 14:06:18,840 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 [2022-11-21 14:06:18,921 INFO L321 Elim1Store]: treesize reduction 7, result has 30.0 percent of original size [2022-11-21 14:06:18,921 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 [2022-11-21 14:06:18,970 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 25 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-21 14:06:18,970 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 14:06:18,970 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [429249177] [2022-11-21 14:06:18,970 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [429249177] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 14:06:18,970 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 14:06:18,971 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2022-11-21 14:06:18,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231110487] [2022-11-21 14:06:18,971 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 14:06:18,971 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-21 14:06:18,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 14:06:18,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-21 14:06:18,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2022-11-21 14:06:18,973 INFO L87 Difference]: Start difference. First operand 306 states and 341 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) [2022-11-21 14:06:20,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 14:06:20,928 INFO L93 Difference]: Finished difference Result 335 states and 369 transitions. [2022-11-21 14:06:20,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-21 14:06:20,929 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 [2022-11-21 14:06:20,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 14:06:20,931 INFO L225 Difference]: With dead ends: 335 [2022-11-21 14:06:20,932 INFO L226 Difference]: Without dead ends: 335 [2022-11-21 14:06:20,932 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 [2022-11-21 14:06:20,933 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 117 mSDsluCounter, 287 mSDsCounter, 0 mSdLazyCounter, 410 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s 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, 1.6s IncrementalHoareTripleChecker+Time [2022-11-21 14:06:20,933 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [118 Valid, 330 Invalid, 419 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 410 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-11-21 14:06:20,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335 states. [2022-11-21 14:06:20,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 335 to 305. [2022-11-21 14:06:20,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 305 states, 239 states have (on average 1.1882845188284519) internal successors, (284), 263 states have internal predecessors, (284), 23 states have call successors, (23), 22 states have call predecessors, (23), 21 states have return successors, (32), 19 states have call predecessors, (32), 23 states have call successors, (32) [2022-11-21 14:06:20,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305 states to 305 states and 339 transitions. [2022-11-21 14:06:20,946 INFO L78 Accepts]: Start accepts. Automaton has 305 states and 339 transitions. Word has length 54 [2022-11-21 14:06:20,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 14:06:20,946 INFO L495 AbstractCegarLoop]: Abstraction has 305 states and 339 transitions. [2022-11-21 14:06:20,946 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) [2022-11-21 14:06:20,947 INFO L276 IsEmpty]: Start isEmpty. Operand 305 states and 339 transitions. [2022-11-21 14:06:20,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-11-21 14:06:20,948 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 14:06:20,948 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] [2022-11-21 14:06:20,971 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d38ee9de-3e9e-4c83-8138-dfcf109b4533/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 14:06:21,166 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d38ee9de-3e9e-4c83-8138-dfcf109b4533/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 14:06:21,166 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)] === [2022-11-21 14:06:21,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 14:06:21,166 INFO L85 PathProgramCache]: Analyzing trace with hash 937684794, now seen corresponding path program 1 times [2022-11-21 14:06:21,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 14:06:21,167 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [85264081] [2022-11-21 14:06:21,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 14:06:21,167 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 [2022-11-21 14:06:21,167 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d38ee9de-3e9e-4c83-8138-dfcf109b4533/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 14:06:21,175 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d38ee9de-3e9e-4c83-8138-dfcf109b4533/bin/uautomizer-vX5HgA9Q3a/mathsat -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) [2022-11-21 14:06:21,214 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d38ee9de-3e9e-4c83-8138-dfcf109b4533/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 14:06:21,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:06:21,648 INFO L263 TraceCheckSpWp]: Trace formula consists of 421 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-21 14:06:21,650 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 14:06:22,466 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 25 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-21 14:06:22,466 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 14:06:23,706 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 22 treesize of output 18 [2022-11-21 14:06:24,557 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-21 14:06:24,558 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 [2022-11-21 14:06:25,968 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-21 14:06:25,968 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 [2022-11-21 14:06:27,335 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 25 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-21 14:06:27,335 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 14:06:27,335 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [85264081] [2022-11-21 14:06:27,336 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [85264081] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 14:06:27,336 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 14:06:27,336 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 21 [2022-11-21 14:06:27,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710794505] [2022-11-21 14:06:27,336 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 14:06:27,337 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-21 14:06:27,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 14:06:27,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-21 14:06:27,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=409, Unknown=0, NotChecked=0, Total=462 [2022-11-21 14:06:27,338 INFO L87 Difference]: Start difference. First operand 305 states and 339 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) [2022-11-21 14:06:33,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 14:06:33,776 INFO L93 Difference]: Finished difference Result 305 states and 335 transitions. [2022-11-21 14:06:33,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-21 14:06:33,778 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 [2022-11-21 14:06:33,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 14:06:33,780 INFO L225 Difference]: With dead ends: 305 [2022-11-21 14:06:33,780 INFO L226 Difference]: Without dead ends: 305 [2022-11-21 14:06:33,780 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 125 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=156, Invalid=966, Unknown=0, NotChecked=0, Total=1122 [2022-11-21 14:06:33,781 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 228 mSDsluCounter, 529 mSDsCounter, 0 mSdLazyCounter, 540 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 229 SdHoareTripleChecker+Valid, 579 SdHoareTripleChecker+Invalid, 557 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 540 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2022-11-21 14:06:33,781 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [229 Valid, 579 Invalid, 557 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 540 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2022-11-21 14:06:33,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 305 states. [2022-11-21 14:06:33,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 305 to 303. [2022-11-21 14:06:33,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 303 states, 239 states have (on average 1.1715481171548117) internal successors, (280), 261 states have internal predecessors, (280), 23 states have call successors, (23), 22 states have call predecessors, (23), 21 states have return successors, (32), 19 states have call predecessors, (32), 23 states have call successors, (32) [2022-11-21 14:06:33,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 335 transitions. [2022-11-21 14:06:33,793 INFO L78 Accepts]: Start accepts. Automaton has 303 states and 335 transitions. Word has length 54 [2022-11-21 14:06:33,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 14:06:33,794 INFO L495 AbstractCegarLoop]: Abstraction has 303 states and 335 transitions. [2022-11-21 14:06:33,794 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) [2022-11-21 14:06:33,794 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states and 335 transitions. [2022-11-21 14:06:33,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-11-21 14:06:33,795 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 14:06:33,796 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] [2022-11-21 14:06:33,813 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d38ee9de-3e9e-4c83-8138-dfcf109b4533/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (35)] Forceful destruction successful, exit code 0 [2022-11-21 14:06:34,013 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d38ee9de-3e9e-4c83-8138-dfcf109b4533/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 14:06:34,013 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)] === [2022-11-21 14:06:34,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 14:06:34,014 INFO L85 PathProgramCache]: Analyzing trace with hash -828042884, now seen corresponding path program 1 times [2022-11-21 14:06:34,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 14:06:34,015 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1713315524] [2022-11-21 14:06:34,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 14:06:34,015 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 [2022-11-21 14:06:34,015 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d38ee9de-3e9e-4c83-8138-dfcf109b4533/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 14:06:34,017 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d38ee9de-3e9e-4c83-8138-dfcf109b4533/bin/uautomizer-vX5HgA9Q3a/mathsat -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) [2022-11-21 14:06:34,039 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d38ee9de-3e9e-4c83-8138-dfcf109b4533/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 14:06:34,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:06:34,845 INFO L263 TraceCheckSpWp]: Trace formula consists of 447 conjuncts, 104 conjunts are in the unsatisfiable core [2022-11-21 14:06:34,851 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 14:06:34,888 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:06:34,889 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 [2022-11-21 14:06:34,992 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:06:35,105 INFO L321 Elim1Store]: treesize reduction 44, result has 34.3 percent of original size [2022-11-21 14:06:35,106 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 [2022-11-21 14:06:35,357 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 [2022-11-21 14:06:35,379 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:06:35,403 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-21 14:06:35,404 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 [2022-11-21 14:06:36,316 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select 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 [2022-11-21 14:06:38,662 INFO L350 Elim1Store]: Elim1 eliminated variable 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 [2022-11-21 14:06:38,674 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:06:38,684 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:06:38,688 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:06:38,781 INFO L321 Elim1Store]: treesize reduction 47, result has 19.0 percent of original size [2022-11-21 14:06:38,782 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 [2022-11-21 14:06:38,810 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:06:38,822 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:06:38,906 INFO L321 Elim1Store]: treesize reduction 16, result has 48.4 percent of original size [2022-11-21 14:06:38,906 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 [2022-11-21 14:06:38,944 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select 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 [2022-11-21 14:06:39,244 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 [2022-11-21 14:06:39,259 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 [2022-11-21 14:06:40,608 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select 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 [2022-11-21 14:06:43,511 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 [2022-11-21 14:06:43,529 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:06:43,542 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:06:43,551 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:06:43,652 INFO L321 Elim1Store]: treesize reduction 47, result has 19.0 percent of original size [2022-11-21 14:06:43,652 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 [2022-11-21 14:06:43,676 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select 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 [2022-11-21 14:06:43,747 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-21 14:06:43,748 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 [2022-11-21 14:06:44,647 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 [2022-11-21 14:06:45,293 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 4 proven. 26 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-21 14:06:45,294 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 14:06:45,782 INFO L321 Elim1Store]: treesize reduction 7, result has 56.3 percent of original size [2022-11-21 14:06:45,782 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 [2022-11-21 14:06:48,472 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 14:06:48,472 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1713315524] [2022-11-21 14:06:48,472 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1713315524] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 14:06:48,473 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [810105430] [2022-11-21 14:06:48,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 14:06:48,473 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-21 14:06:48,473 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d38ee9de-3e9e-4c83-8138-dfcf109b4533/bin/uautomizer-vX5HgA9Q3a/cvc4 [2022-11-21 14:06:48,474 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d38ee9de-3e9e-4c83-8138-dfcf109b4533/bin/uautomizer-vX5HgA9Q3a/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-21 14:06:48,476 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d38ee9de-3e9e-4c83-8138-dfcf109b4533/bin/uautomizer-vX5HgA9Q3a/cvc4 --incremental --print-success --lang smt (37)] Waiting until timeout for monitored process [2022-11-21 14:06:51,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:06:51,131 INFO L263 TraceCheckSpWp]: Trace formula consists of 447 conjuncts, 117 conjunts are in the unsatisfiable core [2022-11-21 14:06:51,139 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 14:06:51,445 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-21 14:06:51,445 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 [2022-11-21 14:06:51,903 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:06:51,947 INFO L321 Elim1Store]: treesize reduction 27, result has 20.6 percent of original size [2022-11-21 14:06:51,947 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 [2022-11-21 14:06:52,492 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 [2022-11-21 14:06:52,528 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:06:52,532 INFO L321 Elim1Store]: treesize reduction 20, result has 4.8 percent of original size [2022-11-21 14:06:52,532 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 22 treesize of output 16 [2022-11-21 14:06:55,392 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 [2022-11-21 14:06:57,447 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:06:57,449 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 [2022-11-21 14:06:57,464 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:06:57,482 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:06:57,487 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:06:57,491 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:06:57,602 INFO L321 Elim1Store]: treesize reduction 47, result has 19.0 percent of original size [2022-11-21 14:06:57,603 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 [2022-11-21 14:06:57,634 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-21 14:06:57,660 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:06:57,688 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:06:57,808 INFO L321 Elim1Store]: treesize reduction 71, result has 18.4 percent of original size [2022-11-21 14:06:57,809 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 [2022-11-21 14:06:58,511 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:06:58,515 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:06:58,527 INFO L321 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2022-11-21 14:06:58,527 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 [2022-11-21 14:06:58,536 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 [2022-11-21 14:07:02,820 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 [2022-11-21 14:07:10,321 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:07:10,323 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 [2022-11-21 14:07:10,350 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:07:10,382 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:07:10,388 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:07:10,394 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:07:10,518 INFO L321 Elim1Store]: treesize reduction 47, result has 19.0 percent of original size [2022-11-21 14:07:10,518 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 [2022-11-21 14:07:10,557 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:07:10,574 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:07:10,584 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:07:10,732 INFO L321 Elim1Store]: treesize reduction 54, result has 29.9 percent of original size [2022-11-21 14:07:10,733 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 [2022-11-21 14:07:10,940 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select 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 [2022-11-21 14:07:13,625 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 [2022-11-21 14:07:15,915 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 9 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 14:07:15,915 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 14:07:19,039 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 [2022-11-21 14:07:19,049 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [810105430] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 14:07:19,049 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 14:07:19,049 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 39] total 65 [2022-11-21 14:07:19,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175395872] [2022-11-21 14:07:19,049 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 14:07:19,050 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 67 states [2022-11-21 14:07:19,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 14:07:19,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2022-11-21 14:07:19,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=275, Invalid=5294, Unknown=135, NotChecked=148, Total=5852 [2022-11-21 14:07:19,054 INFO L87 Difference]: Start difference. First operand 303 states and 335 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) [2022-11-21 14:07:24,434 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 14:08:20,603 WARN L233 SmtUtils]: Spent 12.90s on a formula simplification. DAG size of input: 135 DAG size of output: 109 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-21 14:08:21,784 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 14:08:33,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 14:08:33,508 INFO L93 Difference]: Finished difference Result 392 states and 428 transitions. [2022-11-21 14:08:33,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-11-21 14:08:33,509 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 [2022-11-21 14:08:33,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 14:08:33,511 INFO L225 Difference]: With dead ends: 392 [2022-11-21 14:08:33,511 INFO L226 Difference]: Without dead ends: 392 [2022-11-21 14:08:33,514 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 47 SyntacticMatches, 6 SemanticMatches, 103 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 3009 ImplicationChecksByTransitivity, 73.0s TimeCoverageRelationStatistics Valid=671, Invalid=9745, Unknown=300, NotChecked=204, Total=10920 [2022-11-21 14:08:33,515 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 237 mSDsluCounter, 1102 mSDsCounter, 0 mSdLazyCounter, 1831 mSolverCounterSat, 77 mSolverCounterUnsat, 152 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 28.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 237 SdHoareTripleChecker+Valid, 1148 SdHoareTripleChecker+Invalid, 2060 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 1831 IncrementalHoareTripleChecker+Invalid, 152 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 30.2s IncrementalHoareTripleChecker+Time [2022-11-21 14:08:33,515 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [237 Valid, 1148 Invalid, 2060 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 1831 Invalid, 152 Unknown, 0 Unchecked, 30.2s Time] [2022-11-21 14:08:33,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 392 states. [2022-11-21 14:08:33,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 392 to 357. [2022-11-21 14:08:33,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 357 states, 284 states have (on average 1.1549295774647887) internal successors, (328), 306 states have internal predecessors, (328), 27 states have call successors, (27), 27 states have call predecessors, (27), 26 states have return successors, (37), 23 states have call predecessors, (37), 27 states have call successors, (37) [2022-11-21 14:08:33,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 357 states to 357 states and 392 transitions. [2022-11-21 14:08:33,534 INFO L78 Accepts]: Start accepts. Automaton has 357 states and 392 transitions. Word has length 56 [2022-11-21 14:08:33,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 14:08:33,534 INFO L495 AbstractCegarLoop]: Abstraction has 357 states and 392 transitions. [2022-11-21 14:08:33,535 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) [2022-11-21 14:08:33,535 INFO L276 IsEmpty]: Start isEmpty. Operand 357 states and 392 transitions. [2022-11-21 14:08:33,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-11-21 14:08:33,536 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 14:08:33,536 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] [2022-11-21 14:08:33,551 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d38ee9de-3e9e-4c83-8138-dfcf109b4533/bin/uautomizer-vX5HgA9Q3a/cvc4 --incremental --print-success --lang smt (37)] Forceful destruction successful, exit code 0 [2022-11-21 14:08:33,759 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d38ee9de-3e9e-4c83-8138-dfcf109b4533/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 14:08:33,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d38ee9de-3e9e-4c83-8138-dfcf109b4533/bin/uautomizer-vX5HgA9Q3a/cvc4 --incremental --print-success --lang smt,36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d38ee9de-3e9e-4c83-8138-dfcf109b4533/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 14:08:33,948 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)] === [2022-11-21 14:08:33,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 14:08:33,948 INFO L85 PathProgramCache]: Analyzing trace with hash -828042883, now seen corresponding path program 1 times [2022-11-21 14:08:33,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 14:08:33,949 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1679447965] [2022-11-21 14:08:33,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 14:08:33,949 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 14:08:33,949 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d38ee9de-3e9e-4c83-8138-dfcf109b4533/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 14:08:33,950 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d38ee9de-3e9e-4c83-8138-dfcf109b4533/bin/uautomizer-vX5HgA9Q3a/mathsat -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) [2022-11-21 14:08:33,951 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d38ee9de-3e9e-4c83-8138-dfcf109b4533/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 14:08:34,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:08:34,732 INFO L263 TraceCheckSpWp]: Trace formula consists of 447 conjuncts, 138 conjunts are in the unsatisfiable core [2022-11-21 14:08:34,740 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 14:08:34,779 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 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 [2022-11-21 14:08:34,803 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 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 [2022-11-21 14:08:34,943 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-21 14:08:34,944 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 [2022-11-21 14:08:35,039 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-21 14:08:35,040 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 [2022-11-21 14:08:35,278 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 [2022-11-21 14:08:35,290 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-21 14:08:35,300 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select 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 [2022-11-21 14:08:35,310 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 [2022-11-21 14:08:36,379 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-21 14:08:36,389 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-21 14:08:39,043 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:08:39,049 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:08:39,053 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:08:39,055 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-21 14:08:39,056 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 [2022-11-21 14:08:39,082 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 51 [2022-11-21 14:08:39,097 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:08:39,108 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:08:39,112 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:08:39,226 INFO L321 Elim1Store]: treesize reduction 47, result has 19.0 percent of original size [2022-11-21 14:08:39,226 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 [2022-11-21 14:08:39,252 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:08:39,253 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 [2022-11-21 14:08:39,303 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:08:39,328 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-21 14:08:39,328 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 [2022-11-21 14:08:39,361 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select 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 [2022-11-21 14:08:39,671 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 [2022-11-21 14:08:39,696 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 [2022-11-21 14:08:39,707 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 [2022-11-21 14:08:39,717 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-21 14:08:41,280 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 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 [2022-11-21 14:08:41,290 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-21 14:08:44,412 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:08:44,418 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:08:44,423 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:08:44,425 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-21 14:08:44,426 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 [2022-11-21 14:08:44,446 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 [2022-11-21 14:08:44,463 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:08:44,476 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:08:44,487 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:08:44,602 INFO L321 Elim1Store]: treesize reduction 47, result has 19.0 percent of original size [2022-11-21 14:08:44,602 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 [2022-11-21 14:08:44,658 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:08:44,659 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 [2022-11-21 14:08:44,680 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select 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 [2022-11-21 14:08:44,731 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-21 14:08:44,731 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 [2022-11-21 14:08:45,730 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 [2022-11-21 14:08:45,743 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 [2022-11-21 14:08:46,449 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 4 proven. 26 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-21 14:08:46,449 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 14:08:51,767 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 14:08:51,767 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1679447965] [2022-11-21 14:08:51,767 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1679447965] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 14:08:51,767 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1900004879] [2022-11-21 14:08:51,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 14:08:51,768 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-21 14:08:51,768 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d38ee9de-3e9e-4c83-8138-dfcf109b4533/bin/uautomizer-vX5HgA9Q3a/cvc4 [2022-11-21 14:08:51,769 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d38ee9de-3e9e-4c83-8138-dfcf109b4533/bin/uautomizer-vX5HgA9Q3a/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-21 14:08:51,771 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d38ee9de-3e9e-4c83-8138-dfcf109b4533/bin/uautomizer-vX5HgA9Q3a/cvc4 --incremental --print-success --lang smt (39)] Waiting until timeout for monitored process [2022-11-21 14:08:55,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:08:55,446 INFO L263 TraceCheckSpWp]: Trace formula consists of 447 conjuncts, 151 conjunts are in the unsatisfiable core [2022-11-21 14:08:55,454 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 14:08:55,472 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 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 [2022-11-21 14:08:55,923 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 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 [2022-11-21 14:08:56,015 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:08:56,016 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 [2022-11-21 14:08:56,602 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 [2022-11-21 14:08:56,613 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 [2022-11-21 14:08:56,623 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 7 treesize of output 3 [2022-11-21 14:08:56,660 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select 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 [2022-11-21 14:08:59,874 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-21 14:08:59,884 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select 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 [2022-11-21 14:09:02,778 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:09:02,789 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:09:02,802 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:09:02,806 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:09:02,809 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-21 14:09:02,810 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 [2022-11-21 14:09:02,848 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:09:02,850 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 [2022-11-21 14:09:02,864 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:09:02,887 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:09:02,891 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:09:02,902 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:09:03,038 INFO L321 Elim1Store]: treesize reduction 47, result has 19.0 percent of original size [2022-11-21 14:09:03,039 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 [2022-11-21 14:09:03,065 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:09:03,066 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 [2022-11-21 14:09:03,111 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-21 14:09:03,111 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 [2022-11-21 14:09:03,172 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-21 14:09:03,797 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 [2022-11-21 14:09:03,808 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 5 treesize of output 3 [2022-11-21 14:09:03,818 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 [2022-11-21 14:09:03,849 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 [2022-11-21 14:09:08,581 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 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 [2022-11-21 14:09:08,590 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select 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 [2022-11-21 14:09:13,976 WARN L859 $PredicateComparison]: unable to prove that (let ((.cse0 (select (select |c_old(#memory_$Pointer$.base)| |c_list_add_tail_#in~head#1.base|) (bvadd (_ bv4 32) |c_list_add_tail_#in~head#1.offset|)))) (and (exists ((|v_create_sub_list_insert_sub_~sub~0#1.base_109| (_ BitVec 32)) (|v_ULTIMATE.start_insert_top_~top~0#1.base_BEFORE_CALL_39| (_ BitVec 32))) (and (bvult |v_create_sub_list_insert_sub_~sub~0#1.base_109| |c_#StackHeapBarrier|) (bvult |v_ULTIMATE.start_insert_top_~top~0#1.base_BEFORE_CALL_39| |c_#StackHeapBarrier|) (not (= |v_create_sub_list_insert_sub_~sub~0#1.base_109| |v_ULTIMATE.start_insert_top_~top~0#1.base_BEFORE_CALL_39|)))) (exists ((v_ArrVal_3724 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3730 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3728 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store (store (store |c_old(#memory_$Pointer$.base)| |c_list_add_tail_#in~head#1.base| v_ArrVal_3724) |c_list_add_tail_#in~new#1.base| v_ArrVal_3728) .cse0 v_ArrVal_3730) |c_#memory_$Pointer$.base|)) (exists ((v_ArrVal_3727 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3723 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3729 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.offset| (store (store (store |c_old(#memory_$Pointer$.offset)| |c_list_add_tail_#in~head#1.base| v_ArrVal_3723) |c_list_add_tail_#in~new#1.base| v_ArrVal_3727) .cse0 v_ArrVal_3729))) (not (= (bvadd |c_#StackHeapBarrier| (_ bv1 32)) (_ bv0 32))))) is different from true [2022-11-21 14:09:15,787 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:09:15,800 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:09:15,815 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:09:15,820 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:09:15,822 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-21 14:09:15,824 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 [2022-11-21 14:09:15,875 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:09:15,877 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 [2022-11-21 14:09:15,903 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:09:15,929 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:09:15,933 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:09:15,944 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:09:16,095 INFO L321 Elim1Store]: treesize reduction 47, result has 19.0 percent of original size [2022-11-21 14:09:16,095 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 [2022-11-21 14:09:16,119 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select 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 [2022-11-21 14:09:16,165 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:09:16,167 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 [2022-11-21 14:09:16,224 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-21 14:09:16,224 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 [2022-11-21 14:09:18,939 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 15 treesize of output 7 [2022-11-21 14:09:18,959 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 [2022-11-21 14:09:20,933 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 9 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 3 not checked. [2022-11-21 14:09:20,933 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 14:09:27,593 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1900004879] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 14:09:27,593 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 14:09:27,594 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 39] total 64 [2022-11-21 14:09:27,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705702699] [2022-11-21 14:09:27,594 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 14:09:27,594 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 65 states [2022-11-21 14:09:27,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 14:09:27,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2022-11-21 14:09:27,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=255, Invalid=4573, Unknown=146, NotChecked=138, Total=5112 [2022-11-21 14:09:27,597 INFO L87 Difference]: Start difference. First operand 357 states and 392 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) [2022-11-21 14:09:32,417 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 14:10:01,253 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.62s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 14:10:06,421 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 14:10:37,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 14:10:37,087 INFO L93 Difference]: Finished difference Result 359 states and 393 transitions. [2022-11-21 14:10:37,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-11-21 14:10:37,100 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 [2022-11-21 14:10:37,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 14:10:37,102 INFO L225 Difference]: With dead ends: 359 [2022-11-21 14:10:37,102 INFO L226 Difference]: Without dead ends: 359 [2022-11-21 14:10:37,104 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 52 SyntacticMatches, 6 SemanticMatches, 90 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 2333 ImplicationChecksByTransitivity, 67.2s TimeCoverageRelationStatistics Valid=499, Invalid=7444, Unknown=251, NotChecked=178, Total=8372 [2022-11-21 14:10:37,104 INFO L413 NwaCegarLoop]: 63 mSDtfsCounter, 45 mSDsluCounter, 1218 mSDsCounter, 0 mSdLazyCounter, 1455 mSolverCounterSat, 23 mSolverCounterUnsat, 119 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 35.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 1281 SdHoareTripleChecker+Invalid, 1697 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 1455 IncrementalHoareTripleChecker+Invalid, 119 IncrementalHoareTripleChecker+Unknown, 100 IncrementalHoareTripleChecker+Unchecked, 36.7s IncrementalHoareTripleChecker+Time [2022-11-21 14:10:37,105 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 1281 Invalid, 1697 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 1455 Invalid, 119 Unknown, 100 Unchecked, 36.7s Time] [2022-11-21 14:10:37,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 359 states. [2022-11-21 14:10:37,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 359 to 357. [2022-11-21 14:10:37,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 357 states, 284 states have (on average 1.1514084507042253) internal successors, (327), 306 states have internal predecessors, (327), 27 states have call successors, (27), 27 states have call predecessors, (27), 26 states have return successors, (37), 23 states have call predecessors, (37), 27 states have call successors, (37) [2022-11-21 14:10:37,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 357 states to 357 states and 391 transitions. [2022-11-21 14:10:37,116 INFO L78 Accepts]: Start accepts. Automaton has 357 states and 391 transitions. Word has length 56 [2022-11-21 14:10:37,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 14:10:37,117 INFO L495 AbstractCegarLoop]: Abstraction has 357 states and 391 transitions. [2022-11-21 14:10:37,117 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) [2022-11-21 14:10:37,118 INFO L276 IsEmpty]: Start isEmpty. Operand 357 states and 391 transitions. [2022-11-21 14:10:37,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-11-21 14:10:37,119 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 14:10:37,119 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] [2022-11-21 14:10:37,140 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d38ee9de-3e9e-4c83-8138-dfcf109b4533/bin/uautomizer-vX5HgA9Q3a/cvc4 --incremental --print-success --lang smt (39)] Forceful destruction successful, exit code 0 [2022-11-21 14:10:37,345 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d38ee9de-3e9e-4c83-8138-dfcf109b4533/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 14:10:37,533 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d38ee9de-3e9e-4c83-8138-dfcf109b4533/bin/uautomizer-vX5HgA9Q3a/cvc4 --incremental --print-success --lang smt,38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d38ee9de-3e9e-4c83-8138-dfcf109b4533/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 14:10:37,533 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)] === [2022-11-21 14:10:37,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 14:10:37,534 INFO L85 PathProgramCache]: Analyzing trace with hash -234698876, now seen corresponding path program 1 times [2022-11-21 14:10:37,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 14:10:37,534 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [658979780] [2022-11-21 14:10:37,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 14:10:37,535 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 [2022-11-21 14:10:37,535 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d38ee9de-3e9e-4c83-8138-dfcf109b4533/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 14:10:37,536 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d38ee9de-3e9e-4c83-8138-dfcf109b4533/bin/uautomizer-vX5HgA9Q3a/mathsat -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) [2022-11-21 14:10:37,539 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d38ee9de-3e9e-4c83-8138-dfcf109b4533/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 14:10:38,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:10:38,563 INFO L263 TraceCheckSpWp]: Trace formula consists of 480 conjuncts, 85 conjunts are in the unsatisfiable core [2022-11-21 14:10:38,580 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 14:10:39,659 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 [2022-11-21 14:10:39,694 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 [2022-11-21 14:10:39,897 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:10:39,897 INFO L350 Elim1Store]: Elim1 eliminated variable 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 [2022-11-21 14:10:39,926 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:10:39,926 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-21 14:10:40,071 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-21 14:10:40,072 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 [2022-11-21 14:10:40,514 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 16 treesize of output 18 [2022-11-21 14:10:40,575 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-21 14:10:40,650 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 [2022-11-21 14:10:40,664 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 [2022-11-21 14:10:44,121 INFO L350 Elim1Store]: Elim1 eliminated variable 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 [2022-11-21 14:10:44,267 INFO L321 Elim1Store]: treesize reduction 46, result has 19.3 percent of original size [2022-11-21 14:10:44,268 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 [2022-11-21 14:10:44,284 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 [2022-11-21 14:10:44,305 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 [2022-11-21 14:10:44,356 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 [2022-11-21 14:10:45,124 INFO L321 Elim1Store]: treesize reduction 62, result has 36.1 percent of original size [2022-11-21 14:10:45,124 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 [2022-11-21 14:10:45,623 INFO L350 Elim1Store]: Elim1 eliminated variable 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 [2022-11-21 14:10:46,848 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 [2022-11-21 14:10:47,814 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 12 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 14:10:47,815 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 14:10:55,981 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 14:10:55,981 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [658979780] [2022-11-21 14:10:55,981 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [658979780] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 14:10:55,981 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1580275037] [2022-11-21 14:10:55,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 14:10:55,981 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-21 14:10:55,982 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d38ee9de-3e9e-4c83-8138-dfcf109b4533/bin/uautomizer-vX5HgA9Q3a/cvc4 [2022-11-21 14:10:55,983 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d38ee9de-3e9e-4c83-8138-dfcf109b4533/bin/uautomizer-vX5HgA9Q3a/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-21 14:10:55,988 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d38ee9de-3e9e-4c83-8138-dfcf109b4533/bin/uautomizer-vX5HgA9Q3a/cvc4 --incremental --print-success --lang smt (41)] Waiting until timeout for monitored process [2022-11-21 14:10:59,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:10:59,439 INFO L263 TraceCheckSpWp]: Trace formula consists of 480 conjuncts, 85 conjunts are in the unsatisfiable core [2022-11-21 14:10:59,445 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 14:10:59,757 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-21 14:10:59,790 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 [2022-11-21 14:10:59,845 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:10:59,846 INFO L350 Elim1Store]: Elim1 eliminated variable 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 [2022-11-21 14:10:59,873 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:10:59,874 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 21 treesize of output 20 [2022-11-21 14:11:00,030 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-21 14:11:00,031 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 [2022-11-21 14:11:00,249 INFO L350 Elim1Store]: Elim1 eliminated variable 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 [2022-11-21 14:11:00,297 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-21 14:11:00,369 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 [2022-11-21 14:11:00,383 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 [2022-11-21 14:11:02,383 INFO L350 Elim1Store]: Elim1 eliminated variable 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 [2022-11-21 14:11:02,527 INFO L321 Elim1Store]: treesize reduction 46, result has 19.3 percent of original size [2022-11-21 14:11:02,527 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 [2022-11-21 14:11:02,544 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 44 treesize of output 26 [2022-11-21 14:11:02,576 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:11:02,577 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 [2022-11-21 14:11:02,602 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 [2022-11-21 14:11:02,938 INFO L321 Elim1Store]: treesize reduction 62, result has 36.1 percent of original size [2022-11-21 14:11:02,939 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 [2022-11-21 14:11:03,495 INFO L350 Elim1Store]: Elim1 eliminated variable 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 [2022-11-21 14:11:04,717 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 [2022-11-21 14:11:05,577 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 12 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 14:11:05,577 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 14:11:13,965 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1580275037] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 14:11:13,965 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 14:11:13,965 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 27] total 34 [2022-11-21 14:11:13,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188829592] [2022-11-21 14:11:13,966 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 14:11:13,966 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-11-21 14:11:13,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 14:11:13,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-11-21 14:11:13,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=1780, Unknown=57, NotChecked=0, Total=1980 [2022-11-21 14:11:13,968 INFO L87 Difference]: Start difference. First operand 357 states and 391 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) [2022-11-21 14:11:40,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 14:11:40,693 INFO L93 Difference]: Finished difference Result 399 states and 432 transitions. [2022-11-21 14:11:40,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-11-21 14:11:40,693 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 [2022-11-21 14:11:40,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 14:11:40,695 INFO L225 Difference]: With dead ends: 399 [2022-11-21 14:11:40,695 INFO L226 Difference]: Without dead ends: 399 [2022-11-21 14:11:40,696 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 92 SyntacticMatches, 5 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1254 ImplicationChecksByTransitivity, 33.3s TimeCoverageRelationStatistics Valid=447, Invalid=4281, Unknown=102, NotChecked=0, Total=4830 [2022-11-21 14:11:40,697 INFO L413 NwaCegarLoop]: 54 mSDtfsCounter, 180 mSDsluCounter, 955 mSDsCounter, 0 mSdLazyCounter, 1602 mSolverCounterSat, 35 mSolverCounterUnsat, 23 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 181 SdHoareTripleChecker+Valid, 1009 SdHoareTripleChecker+Invalid, 1660 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 1602 IncrementalHoareTripleChecker+Invalid, 23 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.2s IncrementalHoareTripleChecker+Time [2022-11-21 14:11:40,697 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [181 Valid, 1009 Invalid, 1660 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 1602 Invalid, 23 Unknown, 0 Unchecked, 14.2s Time] [2022-11-21 14:11:40,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 399 states. [2022-11-21 14:11:40,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 399 to 349. [2022-11-21 14:11:40,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 349 states, 276 states have (on average 1.144927536231884) internal successors, (316), 299 states have internal predecessors, (316), 26 states have call successors, (26), 26 states have call predecessors, (26), 27 states have return successors, (36), 23 states have call predecessors, (36), 26 states have call successors, (36) [2022-11-21 14:11:40,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 349 states to 349 states and 378 transitions. [2022-11-21 14:11:40,710 INFO L78 Accepts]: Start accepts. Automaton has 349 states and 378 transitions. Word has length 57 [2022-11-21 14:11:40,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 14:11:40,710 INFO L495 AbstractCegarLoop]: Abstraction has 349 states and 378 transitions. [2022-11-21 14:11:40,711 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) [2022-11-21 14:11:40,711 INFO L276 IsEmpty]: Start isEmpty. Operand 349 states and 378 transitions. [2022-11-21 14:11:40,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-11-21 14:11:40,712 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 14:11:40,712 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] [2022-11-21 14:11:40,732 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d38ee9de-3e9e-4c83-8138-dfcf109b4533/bin/uautomizer-vX5HgA9Q3a/cvc4 --incremental --print-success --lang smt (41)] Forceful destruction successful, exit code 0 [2022-11-21 14:11:40,941 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d38ee9de-3e9e-4c83-8138-dfcf109b4533/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 14:11:41,126 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d38ee9de-3e9e-4c83-8138-dfcf109b4533/bin/uautomizer-vX5HgA9Q3a/cvc4 --incremental --print-success --lang smt,40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d38ee9de-3e9e-4c83-8138-dfcf109b4533/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 14:11:41,127 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)] === [2022-11-21 14:11:41,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 14:11:41,127 INFO L85 PathProgramCache]: Analyzing trace with hash -234698875, now seen corresponding path program 1 times [2022-11-21 14:11:41,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 14:11:41,128 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1032558122] [2022-11-21 14:11:41,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 14:11:41,128 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 [2022-11-21 14:11:41,128 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d38ee9de-3e9e-4c83-8138-dfcf109b4533/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 14:11:41,129 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d38ee9de-3e9e-4c83-8138-dfcf109b4533/bin/uautomizer-vX5HgA9Q3a/mathsat -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) [2022-11-21 14:11:41,131 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d38ee9de-3e9e-4c83-8138-dfcf109b4533/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 14:11:42,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:11:42,194 INFO L263 TraceCheckSpWp]: Trace formula consists of 480 conjuncts, 122 conjunts are in the unsatisfiable core [2022-11-21 14:11:42,202 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 14:11:42,213 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 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 [2022-11-21 14:11:42,433 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 [2022-11-21 14:11:42,550 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 [2022-11-21 14:11:42,864 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-21 14:11:42,865 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 [2022-11-21 14:11:42,906 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-21 14:11:43,723 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 [2022-11-21 14:11:44,014 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-21 14:11:44,015 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 [2022-11-21 14:11:44,367 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 [2022-11-21 14:11:44,389 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 [2022-11-21 14:11:44,628 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:11:44,629 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-21 14:11:44,666 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:11:44,667 INFO L350 Elim1Store]: Elim1 eliminated variable 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 [2022-11-21 14:11:44,813 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-21 14:11:44,813 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 [2022-11-21 14:11:44,915 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 [2022-11-21 14:11:45,388 INFO L350 Elim1Store]: Elim1 eliminated variable 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 [2022-11-21 14:11:45,441 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-21 14:11:45,540 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 [2022-11-21 14:11:45,554 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 [2022-11-21 14:11:52,263 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 120 treesize of output 79 [2022-11-21 14:11:52,279 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 [2022-11-21 14:11:52,457 INFO L321 Elim1Store]: treesize reduction 34, result has 24.4 percent of original size [2022-11-21 14:11:52,457 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 [2022-11-21 14:11:52,477 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:11:52,478 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 [2022-11-21 14:11:52,495 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:11:52,504 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 27 [2022-11-21 14:11:52,521 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:11:52,522 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 [2022-11-21 14:11:53,455 INFO L321 Elim1Store]: treesize reduction 12, result has 55.6 percent of original size [2022-11-21 14:11:53,456 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 [2022-11-21 14:11:53,537 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 [2022-11-21 14:11:54,146 INFO L321 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-11-21 14:11:54,146 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 [2022-11-21 14:11:54,175 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 [2022-11-21 14:11:55,315 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 [2022-11-21 14:11:55,336 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 [2022-11-21 14:11:56,063 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 10 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 14:11:56,063 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 14:11:58,849 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 [2022-11-21 14:12:16,422 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 14:12:16,422 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1032558122] [2022-11-21 14:12:16,422 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1032558122] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 14:12:16,423 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [482893681] [2022-11-21 14:12:16,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 14:12:16,423 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-21 14:12:16,423 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d38ee9de-3e9e-4c83-8138-dfcf109b4533/bin/uautomizer-vX5HgA9Q3a/cvc4 [2022-11-21 14:12:16,424 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d38ee9de-3e9e-4c83-8138-dfcf109b4533/bin/uautomizer-vX5HgA9Q3a/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-21 14:12:16,426 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d38ee9de-3e9e-4c83-8138-dfcf109b4533/bin/uautomizer-vX5HgA9Q3a/cvc4 --incremental --print-success --lang smt (43)] Waiting until timeout for monitored process [2022-11-21 14:12:22,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:12:22,393 INFO L263 TraceCheckSpWp]: Trace formula consists of 480 conjuncts, 107 conjunts are in the unsatisfiable core [2022-11-21 14:12:22,400 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 14:12:25,846 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 [2022-11-21 14:12:25,879 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 [2022-11-21 14:12:25,922 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:12:25,922 INFO L350 Elim1Store]: Elim1 eliminated variable 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 [2022-11-21 14:12:25,950 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:12:25,951 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-21 14:12:26,008 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-21 14:12:26,193 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-21 14:12:26,193 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 [2022-11-21 14:12:26,493 INFO L350 Elim1Store]: Elim1 eliminated variable 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 [2022-11-21 14:12:26,521 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-21 14:12:26,574 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 [2022-11-21 14:12:26,593 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 [2022-11-21 14:12:37,063 INFO L350 Elim1Store]: Elim1 eliminated variable 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 [2022-11-21 14:12:37,416 INFO L321 Elim1Store]: treesize reduction 46, result has 19.3 percent of original size [2022-11-21 14:12:37,416 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 [2022-11-21 14:12:37,435 INFO L350 Elim1Store]: Elim1 eliminated variable 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 [2022-11-21 14:12:37,454 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:12:37,456 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 [2022-11-21 14:12:37,475 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:12:37,485 INFO L350 Elim1Store]: Elim1 eliminated variable 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 [2022-11-21 14:12:37,530 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 [2022-11-21 14:12:37,584 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:12:37,584 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 [2022-11-21 14:12:38,740 INFO L321 Elim1Store]: treesize reduction 12, result has 55.6 percent of original size [2022-11-21 14:12:38,741 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 [2022-11-21 14:12:38,800 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 [2022-11-21 14:12:39,594 INFO L350 Elim1Store]: Elim1 eliminated variable 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 [2022-11-21 14:12:39,612 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 [2022-11-21 14:12:40,095 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 [2022-11-21 14:12:40,115 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 [2022-11-21 14:12:40,224 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 4 proven. 37 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 14:12:40,224 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 14:12:40,535 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