./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ldv-memsafety/memleaks_test22_3-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version e04fb08f Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8160929a-9e4c-41f1-afae-433f8348cbbd/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8160929a-9e4c-41f1-afae-433f8348cbbd/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8160929a-9e4c-41f1-afae-433f8348cbbd/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8160929a-9e4c-41f1-afae-433f8348cbbd/bin/uautomizer-tPACEb0tL8/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test22_3-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8160929a-9e4c-41f1-afae-433f8348cbbd/bin/uautomizer-tPACEb0tL8/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8160929a-9e4c-41f1-afae-433f8348cbbd/bin/uautomizer-tPACEb0tL8 --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 cac2372de612a50e6cea0e2672ab51101a6ffa3bb2603a06b5c5aa59090db116 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-e04fb08 [2022-11-16 12:29:20,958 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 12:29:20,960 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 12:29:20,980 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 12:29:20,980 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 12:29:20,981 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 12:29:20,983 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 12:29:20,985 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 12:29:20,987 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 12:29:20,988 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 12:29:20,989 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 12:29:20,990 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 12:29:20,991 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 12:29:20,992 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 12:29:20,993 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 12:29:20,999 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 12:29:21,001 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 12:29:21,005 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 12:29:21,007 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 12:29:21,010 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 12:29:21,017 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 12:29:21,018 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 12:29:21,019 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 12:29:21,025 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 12:29:21,029 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 12:29:21,032 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 12:29:21,033 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 12:29:21,034 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 12:29:21,034 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 12:29:21,035 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 12:29:21,037 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 12:29:21,038 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 12:29:21,039 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 12:29:21,041 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 12:29:21,042 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 12:29:21,043 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 12:29:21,044 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 12:29:21,044 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 12:29:21,044 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 12:29:21,045 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 12:29:21,046 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 12:29:21,047 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8160929a-9e4c-41f1-afae-433f8348cbbd/bin/uautomizer-tPACEb0tL8/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-11-16 12:29:21,083 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 12:29:21,083 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 12:29:21,084 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 12:29:21,084 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 12:29:21,085 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 12:29:21,085 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 12:29:21,086 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 12:29:21,086 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 12:29:21,086 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 12:29:21,087 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 12:29:21,088 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 12:29:21,088 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-16 12:29:21,088 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 12:29:21,088 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 12:29:21,089 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 12:29:21,089 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-16 12:29:21,089 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-16 12:29:21,098 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-16 12:29:21,098 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 12:29:21,099 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-16 12:29:21,099 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 12:29:21,099 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 12:29:21,099 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 12:29:21,100 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 12:29:21,100 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 12:29:21,100 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:29:21,100 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 12:29:21,101 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 12:29:21,101 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 12:29:21,101 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 12:29:21,101 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_8160929a-9e4c-41f1-afae-433f8348cbbd/bin/uautomizer-tPACEb0tL8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8160929a-9e4c-41f1-afae-433f8348cbbd/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cac2372de612a50e6cea0e2672ab51101a6ffa3bb2603a06b5c5aa59090db116 [2022-11-16 12:29:21,414 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 12:29:21,447 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 12:29:21,450 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 12:29:21,451 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 12:29:21,452 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 12:29:21,454 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8160929a-9e4c-41f1-afae-433f8348cbbd/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/ldv-memsafety/memleaks_test22_3-1.i [2022-11-16 12:29:21,532 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8160929a-9e4c-41f1-afae-433f8348cbbd/bin/uautomizer-tPACEb0tL8/data/9aadabe7f/888360b64e054eefbc55612e027ffb0a/FLAG8f2c38ed4 [2022-11-16 12:29:22,165 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 12:29:22,165 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8160929a-9e4c-41f1-afae-433f8348cbbd/sv-benchmarks/c/ldv-memsafety/memleaks_test22_3-1.i [2022-11-16 12:29:22,185 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8160929a-9e4c-41f1-afae-433f8348cbbd/bin/uautomizer-tPACEb0tL8/data/9aadabe7f/888360b64e054eefbc55612e027ffb0a/FLAG8f2c38ed4 [2022-11-16 12:29:22,389 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8160929a-9e4c-41f1-afae-433f8348cbbd/bin/uautomizer-tPACEb0tL8/data/9aadabe7f/888360b64e054eefbc55612e027ffb0a [2022-11-16 12:29:22,392 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 12:29:22,393 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 12:29:22,395 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 12:29:22,395 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 12:29:22,399 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 12:29:22,400 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:29:22" (1/1) ... [2022-11-16 12:29:22,401 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ddeff25 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:29:22, skipping insertion in model container [2022-11-16 12:29:22,402 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:29:22" (1/1) ... [2022-11-16 12:29:22,411 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 12:29:22,476 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 12:29:22,958 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:29:22,981 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2022-11-16 12:29:22,981 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@62bebcc4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:29:22, skipping insertion in model container [2022-11-16 12:29:22,982 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 12:29:22,983 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2022-11-16 12:29:22,986 INFO L158 Benchmark]: Toolchain (without parser) took 590.56ms. Allocated memory is still 111.1MB. Free memory was 66.2MB in the beginning and 81.3MB in the end (delta: -15.1MB). Peak memory consumption was 6.6MB. Max. memory is 16.1GB. [2022-11-16 12:29:22,986 INFO L158 Benchmark]: CDTParser took 0.28ms. Allocated memory is still 111.1MB. Free memory is still 84.0MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 12:29:22,988 INFO L158 Benchmark]: CACSL2BoogieTranslator took 587.75ms. Allocated memory is still 111.1MB. Free memory was 66.0MB in the beginning and 81.3MB in the end (delta: -15.3MB). Peak memory consumption was 6.6MB. Max. memory is 16.1GB. [2022-11-16 12:29:22,990 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28ms. Allocated memory is still 111.1MB. Free memory is still 84.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 587.75ms. Allocated memory is still 111.1MB. Free memory was 66.0MB in the beginning and 81.3MB in the end (delta: -15.3MB). Peak memory consumption was 6.6MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 576]: 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_8160929a-9e4c-41f1-afae-433f8348cbbd/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8160929a-9e4c-41f1-afae-433f8348cbbd/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8160929a-9e4c-41f1-afae-433f8348cbbd/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8160929a-9e4c-41f1-afae-433f8348cbbd/bin/uautomizer-tPACEb0tL8/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test22_3-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8160929a-9e4c-41f1-afae-433f8348cbbd/bin/uautomizer-tPACEb0tL8/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8160929a-9e4c-41f1-afae-433f8348cbbd/bin/uautomizer-tPACEb0tL8 --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 cac2372de612a50e6cea0e2672ab51101a6ffa3bb2603a06b5c5aa59090db116 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-e04fb08 [2022-11-16 12:29:25,220 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 12:29:25,224 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 12:29:25,264 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 12:29:25,264 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 12:29:25,269 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 12:29:25,271 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 12:29:25,279 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 12:29:25,282 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 12:29:25,288 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 12:29:25,289 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 12:29:25,291 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 12:29:25,292 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 12:29:25,294 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 12:29:25,296 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 12:29:25,297 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 12:29:25,300 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 12:29:25,301 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 12:29:25,307 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 12:29:25,312 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 12:29:25,314 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 12:29:25,316 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 12:29:25,319 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 12:29:25,320 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 12:29:25,331 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 12:29:25,332 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 12:29:25,332 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 12:29:25,333 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 12:29:25,335 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 12:29:25,336 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 12:29:25,337 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 12:29:25,337 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 12:29:25,339 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 12:29:25,340 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 12:29:25,341 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 12:29:25,342 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 12:29:25,343 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 12:29:25,343 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 12:29:25,344 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 12:29:25,345 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 12:29:25,346 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 12:29:25,352 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8160929a-9e4c-41f1-afae-433f8348cbbd/bin/uautomizer-tPACEb0tL8/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2022-11-16 12:29:25,411 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 12:29:25,411 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 12:29:25,413 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 12:29:25,413 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 12:29:25,414 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 12:29:25,414 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 12:29:25,415 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 12:29:25,416 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 12:29:25,416 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 12:29:25,416 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 12:29:25,417 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 12:29:25,417 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-16 12:29:25,418 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 12:29:25,418 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 12:29:25,418 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 12:29:25,418 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-16 12:29:25,419 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-16 12:29:25,419 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-16 12:29:25,419 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 12:29:25,419 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-16 12:29:25,419 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-16 12:29:25,419 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-16 12:29:25,420 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 12:29:25,420 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 12:29:25,420 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 12:29:25,420 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 12:29:25,421 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 12:29:25,421 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:29:25,421 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 12:29:25,421 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 12:29:25,422 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-11-16 12:29:25,422 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-16 12:29:25,422 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-16 12:29:25,422 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_8160929a-9e4c-41f1-afae-433f8348cbbd/bin/uautomizer-tPACEb0tL8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8160929a-9e4c-41f1-afae-433f8348cbbd/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cac2372de612a50e6cea0e2672ab51101a6ffa3bb2603a06b5c5aa59090db116 [2022-11-16 12:29:25,835 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 12:29:25,865 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 12:29:25,868 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 12:29:25,869 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 12:29:25,872 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 12:29:25,874 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8160929a-9e4c-41f1-afae-433f8348cbbd/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/ldv-memsafety/memleaks_test22_3-1.i [2022-11-16 12:29:25,944 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8160929a-9e4c-41f1-afae-433f8348cbbd/bin/uautomizer-tPACEb0tL8/data/c19911c38/8ecb89295b0d4e5b8f25ce356f59bfcb/FLAG8a9cbf45b [2022-11-16 12:29:26,560 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 12:29:26,561 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8160929a-9e4c-41f1-afae-433f8348cbbd/sv-benchmarks/c/ldv-memsafety/memleaks_test22_3-1.i [2022-11-16 12:29:26,574 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8160929a-9e4c-41f1-afae-433f8348cbbd/bin/uautomizer-tPACEb0tL8/data/c19911c38/8ecb89295b0d4e5b8f25ce356f59bfcb/FLAG8a9cbf45b [2022-11-16 12:29:26,858 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8160929a-9e4c-41f1-afae-433f8348cbbd/bin/uautomizer-tPACEb0tL8/data/c19911c38/8ecb89295b0d4e5b8f25ce356f59bfcb [2022-11-16 12:29:26,862 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 12:29:26,864 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 12:29:26,867 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 12:29:26,867 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 12:29:26,872 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 12:29:26,873 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:29:26" (1/1) ... [2022-11-16 12:29:26,874 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6496e6ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:29:26, skipping insertion in model container [2022-11-16 12:29:26,874 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:29:26" (1/1) ... [2022-11-16 12:29:26,882 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 12:29:26,947 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 12:29:27,475 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:29:27,500 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-11-16 12:29:27,517 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 12:29:27,585 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:29:27,605 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 12:29:27,671 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:29:27,730 INFO L208 MainTranslator]: Completed translation [2022-11-16 12:29:27,731 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:29:27 WrapperNode [2022-11-16 12:29:27,731 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 12:29:27,733 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 12:29:27,733 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 12:29:27,733 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 12:29:27,740 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:29:27" (1/1) ... [2022-11-16 12:29:27,776 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:29:27" (1/1) ... [2022-11-16 12:29:27,828 INFO L138 Inliner]: procedures = 167, calls = 73, calls flagged for inlining = 25, calls inlined = 19, statements flattened = 124 [2022-11-16 12:29:27,829 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 12:29:27,830 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 12:29:27,830 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 12:29:27,830 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 12:29:27,839 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:29:27" (1/1) ... [2022-11-16 12:29:27,840 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:29:27" (1/1) ... [2022-11-16 12:29:27,856 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:29:27" (1/1) ... [2022-11-16 12:29:27,860 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:29:27" (1/1) ... [2022-11-16 12:29:27,869 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:29:27" (1/1) ... [2022-11-16 12:29:27,884 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:29:27" (1/1) ... [2022-11-16 12:29:27,886 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:29:27" (1/1) ... [2022-11-16 12:29:27,891 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:29:27" (1/1) ... [2022-11-16 12:29:27,908 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 12:29:27,913 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 12:29:27,914 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 12:29:27,914 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 12:29:27,915 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:29:27" (1/1) ... [2022-11-16 12:29:27,920 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:29:27,932 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8160929a-9e4c-41f1-afae-433f8348cbbd/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:29:27,946 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8160929a-9e4c-41f1-afae-433f8348cbbd/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 12:29:27,973 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8160929a-9e4c-41f1-afae-433f8348cbbd/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 12:29:27,998 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-11-16 12:29:27,998 INFO L130 BoogieDeclarations]: Found specification of procedure LDV_INIT_LIST_HEAD [2022-11-16 12:29:27,999 INFO L138 BoogieDeclarations]: Found implementation of procedure LDV_INIT_LIST_HEAD [2022-11-16 12:29:27,999 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-16 12:29:27,999 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-16 12:29:27,999 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_put [2022-11-16 12:29:28,000 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_put [2022-11-16 12:29:28,002 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-16 12:29:28,002 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 12:29:28,002 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-16 12:29:28,002 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-16 12:29:28,002 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-11-16 12:29:28,003 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 12:29:28,003 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-16 12:29:28,003 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 12:29:28,003 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 12:29:28,168 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 12:29:28,170 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 12:29:28,717 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 12:29:28,725 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 12:29:28,725 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-16 12:29:28,727 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:29:28 BoogieIcfgContainer [2022-11-16 12:29:28,727 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 12:29:28,730 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 12:29:28,731 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 12:29:28,734 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 12:29:28,734 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 12:29:26" (1/3) ... [2022-11-16 12:29:28,735 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65ce1338 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:29:28, skipping insertion in model container [2022-11-16 12:29:28,735 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:29:27" (2/3) ... [2022-11-16 12:29:28,736 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65ce1338 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:29:28, skipping insertion in model container [2022-11-16 12:29:28,736 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:29:28" (3/3) ... [2022-11-16 12:29:28,737 INFO L112 eAbstractionObserver]: Analyzing ICFG memleaks_test22_3-1.i [2022-11-16 12:29:28,757 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 12:29:28,758 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 25 error locations. [2022-11-16 12:29:28,807 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 12:29:28,813 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;@4ea42f5d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 12:29:28,814 INFO L358 AbstractCegarLoop]: Starting to check reachability of 25 error locations. [2022-11-16 12:29:28,818 INFO L276 IsEmpty]: Start isEmpty. Operand has 92 states, 59 states have (on average 1.576271186440678) internal successors, (93), 85 states have internal predecessors, (93), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-16 12:29:28,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-16 12:29:28,827 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:29:28,827 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:29:28,828 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-11-16 12:29:28,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:29:28,834 INFO L85 PathProgramCache]: Analyzing trace with hash 886333963, now seen corresponding path program 1 times [2022-11-16 12:29:28,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:29:28,848 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [883673532] [2022-11-16 12:29:28,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:29:28,849 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:29:28,849 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8160929a-9e4c-41f1-afae-433f8348cbbd/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:29:28,858 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8160929a-9e4c-41f1-afae-433f8348cbbd/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:29:28,861 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8160929a-9e4c-41f1-afae-433f8348cbbd/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-16 12:29:28,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:29:28,996 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-16 12:29:29,008 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:29:29,093 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-16 12:29:29,184 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:29:29,189 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:29:29,190 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:29:29,191 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [883673532] [2022-11-16 12:29:29,191 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [883673532] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:29:29,192 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:29:29,192 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 12:29:29,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556688131] [2022-11-16 12:29:29,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:29:29,200 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:29:29,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:29:29,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:29:29,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:29:29,265 INFO L87 Difference]: Start difference. First operand has 92 states, 59 states have (on average 1.576271186440678) internal successors, (93), 85 states have internal predecessors, (93), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 6 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-16 12:29:29,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:29:29,815 INFO L93 Difference]: Finished difference Result 158 states and 178 transitions. [2022-11-16 12:29:29,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 12:29:29,817 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 10 [2022-11-16 12:29:29,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:29:29,827 INFO L225 Difference]: With dead ends: 158 [2022-11-16 12:29:29,827 INFO L226 Difference]: Without dead ends: 156 [2022-11-16 12:29:29,829 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-16 12:29:29,833 INFO L413 NwaCegarLoop]: 103 mSDtfsCounter, 97 mSDsluCounter, 284 mSDsCounter, 0 mSdLazyCounter, 187 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 387 SdHoareTripleChecker+Invalid, 190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-16 12:29:29,834 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 387 Invalid, 190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 187 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-16 12:29:29,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2022-11-16 12:29:29,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 95. [2022-11-16 12:29:29,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 62 states have (on average 1.5483870967741935) internal successors, (96), 87 states have internal predecessors, (96), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2022-11-16 12:29:29,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 105 transitions. [2022-11-16 12:29:29,879 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 105 transitions. Word has length 10 [2022-11-16 12:29:29,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:29:29,879 INFO L495 AbstractCegarLoop]: Abstraction has 95 states and 105 transitions. [2022-11-16 12:29:29,880 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-16 12:29:29,880 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 105 transitions. [2022-11-16 12:29:29,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-16 12:29:29,880 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:29:29,881 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:29:29,898 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8160929a-9e4c-41f1-afae-433f8348cbbd/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-11-16 12:29:30,092 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8160929a-9e4c-41f1-afae-433f8348cbbd/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:29:30,093 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-11-16 12:29:30,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:29:30,094 INFO L85 PathProgramCache]: Analyzing trace with hash 914963114, now seen corresponding path program 1 times [2022-11-16 12:29:30,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:29:30,094 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1278974609] [2022-11-16 12:29:30,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:29:30,095 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:29:30,095 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8160929a-9e4c-41f1-afae-433f8348cbbd/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:29:30,096 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8160929a-9e4c-41f1-afae-433f8348cbbd/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:29:30,105 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8160929a-9e4c-41f1-afae-433f8348cbbd/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-16 12:29:30,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:29:30,164 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-16 12:29:30,165 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:29:30,237 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:29:30,237 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:29:30,238 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:29:30,239 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1278974609] [2022-11-16 12:29:30,239 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1278974609] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:29:30,240 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:29:30,240 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 12:29:30,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156170758] [2022-11-16 12:29:30,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:29:30,245 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 12:29:30,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:29:30,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 12:29:30,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:29:30,247 INFO L87 Difference]: Start difference. First operand 95 states and 105 transitions. Second operand has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-16 12:29:30,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:29:30,303 INFO L93 Difference]: Finished difference Result 114 states and 125 transitions. [2022-11-16 12:29:30,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:29:30,304 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 10 [2022-11-16 12:29:30,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:29:30,309 INFO L225 Difference]: With dead ends: 114 [2022-11-16 12:29:30,310 INFO L226 Difference]: Without dead ends: 114 [2022-11-16 12:29:30,310 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:29:30,311 INFO L413 NwaCegarLoop]: 102 mSDtfsCounter, 19 mSDsluCounter, 291 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 393 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 12:29:30,312 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 393 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 12:29:30,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2022-11-16 12:29:30,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 93. [2022-11-16 12:29:30,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 61 states have (on average 1.5245901639344261) internal successors, (93), 85 states have internal predecessors, (93), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2022-11-16 12:29:30,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 102 transitions. [2022-11-16 12:29:30,321 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 102 transitions. Word has length 10 [2022-11-16 12:29:30,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:29:30,321 INFO L495 AbstractCegarLoop]: Abstraction has 93 states and 102 transitions. [2022-11-16 12:29:30,321 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-16 12:29:30,322 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 102 transitions. [2022-11-16 12:29:30,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-16 12:29:30,322 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:29:30,322 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:29:30,338 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8160929a-9e4c-41f1-afae-433f8348cbbd/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-16 12:29:30,533 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8160929a-9e4c-41f1-afae-433f8348cbbd/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:29:30,533 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-11-16 12:29:30,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:29:30,534 INFO L85 PathProgramCache]: Analyzing trace with hash 1706549126, now seen corresponding path program 1 times [2022-11-16 12:29:30,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:29:30,535 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [974586628] [2022-11-16 12:29:30,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:29:30,535 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 [2022-11-16 12:29:30,535 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8160929a-9e4c-41f1-afae-433f8348cbbd/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:29:30,537 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8160929a-9e4c-41f1-afae-433f8348cbbd/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:29:30,538 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8160929a-9e4c-41f1-afae-433f8348cbbd/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-11-16 12:29:30,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:29:30,620 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-16 12:29:30,622 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:29:30,650 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-16 12:29:30,794 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:29:30,794 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:29:30,794 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:29:30,794 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [974586628] [2022-11-16 12:29:30,795 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [974586628] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:29:30,795 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:29:30,796 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-16 12:29:30,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672873788] [2022-11-16 12:29:30,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:29:30,797 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 12:29:30,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:29:30,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 12:29:30,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-16 12:29:30,798 INFO L87 Difference]: Start difference. First operand 93 states and 102 transitions. Second operand has 7 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-16 12:29:31,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:29:31,323 INFO L93 Difference]: Finished difference Result 134 states and 147 transitions. [2022-11-16 12:29:31,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 12:29:31,325 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2022-11-16 12:29:31,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:29:31,326 INFO L225 Difference]: With dead ends: 134 [2022-11-16 12:29:31,326 INFO L226 Difference]: Without dead ends: 134 [2022-11-16 12:29:31,326 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-11-16 12:29:31,327 INFO L413 NwaCegarLoop]: 101 mSDtfsCounter, 73 mSDsluCounter, 368 mSDsCounter, 0 mSdLazyCounter, 180 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 469 SdHoareTripleChecker+Invalid, 186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-16 12:29:31,328 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 469 Invalid, 186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 180 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-16 12:29:31,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2022-11-16 12:29:31,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 92. [2022-11-16 12:29:31,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 61 states have (on average 1.5081967213114753) internal successors, (92), 84 states have internal predecessors, (92), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2022-11-16 12:29:31,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 101 transitions. [2022-11-16 12:29:31,342 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 101 transitions. Word has length 11 [2022-11-16 12:29:31,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:29:31,344 INFO L495 AbstractCegarLoop]: Abstraction has 92 states and 101 transitions. [2022-11-16 12:29:31,345 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-16 12:29:31,345 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 101 transitions. [2022-11-16 12:29:31,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-16 12:29:31,345 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:29:31,346 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:29:31,366 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8160929a-9e4c-41f1-afae-433f8348cbbd/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-11-16 12:29:31,557 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8160929a-9e4c-41f1-afae-433f8348cbbd/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:29:31,558 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-11-16 12:29:31,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:29:31,559 INFO L85 PathProgramCache]: Analyzing trace with hash 1363388625, now seen corresponding path program 1 times [2022-11-16 12:29:31,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:29:31,559 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1138420134] [2022-11-16 12:29:31,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:29:31,559 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:29:31,560 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8160929a-9e4c-41f1-afae-433f8348cbbd/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:29:31,561 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8160929a-9e4c-41f1-afae-433f8348cbbd/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:29:31,563 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8160929a-9e4c-41f1-afae-433f8348cbbd/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-11-16 12:29:31,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:29:31,636 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 12:29:31,637 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:29:31,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:29:31,669 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:29:31,669 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:29:31,670 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1138420134] [2022-11-16 12:29:31,670 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1138420134] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:29:31,670 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:29:31,670 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 12:29:31,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125445988] [2022-11-16 12:29:31,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:29:31,671 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 12:29:31,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:29:31,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 12:29:31,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:29:31,672 INFO L87 Difference]: Start difference. First operand 92 states and 101 transitions. Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-16 12:29:31,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:29:31,708 INFO L93 Difference]: Finished difference Result 113 states and 123 transitions. [2022-11-16 12:29:31,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:29:31,709 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2022-11-16 12:29:31,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:29:31,710 INFO L225 Difference]: With dead ends: 113 [2022-11-16 12:29:31,710 INFO L226 Difference]: Without dead ends: 113 [2022-11-16 12:29:31,711 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:29:31,717 INFO L413 NwaCegarLoop]: 116 mSDtfsCounter, 35 mSDsluCounter, 307 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 423 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 12:29:31,719 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 423 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 12:29:31,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2022-11-16 12:29:31,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 92. [2022-11-16 12:29:31,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 61 states have (on average 1.4918032786885247) internal successors, (91), 84 states have internal predecessors, (91), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2022-11-16 12:29:31,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 100 transitions. [2022-11-16 12:29:31,742 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 100 transitions. Word has length 12 [2022-11-16 12:29:31,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:29:31,743 INFO L495 AbstractCegarLoop]: Abstraction has 92 states and 100 transitions. [2022-11-16 12:29:31,743 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-16 12:29:31,743 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 100 transitions. [2022-11-16 12:29:31,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-16 12:29:31,745 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:29:31,745 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:29:31,763 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8160929a-9e4c-41f1-afae-433f8348cbbd/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-11-16 12:29:31,946 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8160929a-9e4c-41f1-afae-433f8348cbbd/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:29:31,946 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-11-16 12:29:31,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:29:31,946 INFO L85 PathProgramCache]: Analyzing trace with hash -1188768336, now seen corresponding path program 1 times [2022-11-16 12:29:31,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:29:31,947 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1383968621] [2022-11-16 12:29:31,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:29:31,947 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:29:31,947 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8160929a-9e4c-41f1-afae-433f8348cbbd/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:29:31,948 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8160929a-9e4c-41f1-afae-433f8348cbbd/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:29:31,954 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8160929a-9e4c-41f1-afae-433f8348cbbd/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-11-16 12:29:32,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:29:32,038 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-16 12:29:32,041 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:29:32,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:29:32,088 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:29:32,089 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:29:32,089 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1383968621] [2022-11-16 12:29:32,089 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1383968621] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:29:32,089 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:29:32,089 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 12:29:32,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850117016] [2022-11-16 12:29:32,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:29:32,090 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:29:32,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:29:32,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:29:32,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:29:32,091 INFO L87 Difference]: Start difference. First operand 92 states and 100 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-16 12:29:32,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:29:32,137 INFO L93 Difference]: Finished difference Result 112 states and 122 transitions. [2022-11-16 12:29:32,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:29:32,138 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2022-11-16 12:29:32,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:29:32,139 INFO L225 Difference]: With dead ends: 112 [2022-11-16 12:29:32,139 INFO L226 Difference]: Without dead ends: 112 [2022-11-16 12:29:32,140 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:29:32,147 INFO L413 NwaCegarLoop]: 98 mSDtfsCounter, 21 mSDsluCounter, 190 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 288 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 12:29:32,148 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 288 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 12:29:32,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2022-11-16 12:29:32,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 94. [2022-11-16 12:29:32,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 63 states have (on average 1.4761904761904763) internal successors, (93), 86 states have internal predecessors, (93), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2022-11-16 12:29:32,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 102 transitions. [2022-11-16 12:29:32,162 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 102 transitions. Word has length 12 [2022-11-16 12:29:32,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:29:32,162 INFO L495 AbstractCegarLoop]: Abstraction has 94 states and 102 transitions. [2022-11-16 12:29:32,163 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-16 12:29:32,163 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 102 transitions. [2022-11-16 12:29:32,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-16 12:29:32,163 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:29:32,163 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:29:32,178 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8160929a-9e4c-41f1-afae-433f8348cbbd/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-11-16 12:29:32,364 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8160929a-9e4c-41f1-afae-433f8348cbbd/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:29:32,364 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-11-16 12:29:32,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:29:32,365 INFO L85 PathProgramCache]: Analyzing trace with hash 86428473, now seen corresponding path program 1 times [2022-11-16 12:29:32,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:29:32,366 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [705283212] [2022-11-16 12:29:32,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:29:32,366 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:29:32,366 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8160929a-9e4c-41f1-afae-433f8348cbbd/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:29:32,367 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8160929a-9e4c-41f1-afae-433f8348cbbd/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:29:32,373 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8160929a-9e4c-41f1-afae-433f8348cbbd/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-11-16 12:29:32,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:29:32,450 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-16 12:29:32,454 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:29:32,483 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:29:32,483 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:29:32,483 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:29:32,483 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [705283212] [2022-11-16 12:29:32,484 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [705283212] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:29:32,484 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:29:32,484 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 12:29:32,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455267478] [2022-11-16 12:29:32,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:29:32,485 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:29:32,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:29:32,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:29:32,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:29:32,486 INFO L87 Difference]: Start difference. First operand 94 states and 102 transitions. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-16 12:29:32,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:29:32,515 INFO L93 Difference]: Finished difference Result 104 states and 113 transitions. [2022-11-16 12:29:32,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 12:29:32,516 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2022-11-16 12:29:32,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:29:32,517 INFO L225 Difference]: With dead ends: 104 [2022-11-16 12:29:32,517 INFO L226 Difference]: Without dead ends: 104 [2022-11-16 12:29:32,518 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:29:32,519 INFO L413 NwaCegarLoop]: 106 mSDtfsCounter, 34 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 208 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 12:29:32,523 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 208 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 12:29:32,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2022-11-16 12:29:32,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 95. [2022-11-16 12:29:32,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 64 states have (on average 1.46875) internal successors, (94), 87 states have internal predecessors, (94), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2022-11-16 12:29:32,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 103 transitions. [2022-11-16 12:29:32,541 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 103 transitions. Word has length 16 [2022-11-16 12:29:32,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:29:32,541 INFO L495 AbstractCegarLoop]: Abstraction has 95 states and 103 transitions. [2022-11-16 12:29:32,541 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-16 12:29:32,542 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 103 transitions. [2022-11-16 12:29:32,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-16 12:29:32,543 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:29:32,543 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:29:32,560 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8160929a-9e4c-41f1-afae-433f8348cbbd/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-11-16 12:29:32,755 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8160929a-9e4c-41f1-afae-433f8348cbbd/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:29:32,755 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-11-16 12:29:32,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:29:32,756 INFO L85 PathProgramCache]: Analyzing trace with hash -1674943760, now seen corresponding path program 1 times [2022-11-16 12:29:32,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:29:32,756 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2124724329] [2022-11-16 12:29:32,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:29:32,756 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:29:32,756 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8160929a-9e4c-41f1-afae-433f8348cbbd/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:29:32,758 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8160929a-9e4c-41f1-afae-433f8348cbbd/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:29:32,759 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8160929a-9e4c-41f1-afae-433f8348cbbd/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-11-16 12:29:32,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:29:32,842 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 12:29:32,843 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:29:32,888 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:29:32,888 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:29:32,963 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:29:32,963 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:29:32,964 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2124724329] [2022-11-16 12:29:32,964 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2124724329] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:29:32,964 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:29:32,964 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2022-11-16 12:29:32,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934646110] [2022-11-16 12:29:32,964 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 12:29:32,964 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 12:29:32,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:29:32,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 12:29:32,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-16 12:29:32,965 INFO L87 Difference]: Start difference. First operand 95 states and 103 transitions. Second operand has 8 states, 8 states have (on average 2.5) internal successors, (20), 8 states have internal predecessors, (20), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-16 12:29:33,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:29:33,056 INFO L93 Difference]: Finished difference Result 107 states and 116 transitions. [2022-11-16 12:29:33,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 12:29:33,057 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.5) internal successors, (20), 8 states have internal predecessors, (20), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2022-11-16 12:29:33,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:29:33,058 INFO L225 Difference]: With dead ends: 107 [2022-11-16 12:29:33,058 INFO L226 Difference]: Without dead ends: 107 [2022-11-16 12:29:33,058 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2022-11-16 12:29:33,074 INFO L413 NwaCegarLoop]: 106 mSDtfsCounter, 74 mSDsluCounter, 275 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 381 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:29:33,075 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 381 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 12:29:33,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2022-11-16 12:29:33,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 98. [2022-11-16 12:29:33,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 67 states have (on average 1.4477611940298507) internal successors, (97), 90 states have internal predecessors, (97), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2022-11-16 12:29:33,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 106 transitions. [2022-11-16 12:29:33,079 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 106 transitions. Word has length 17 [2022-11-16 12:29:33,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:29:33,080 INFO L495 AbstractCegarLoop]: Abstraction has 98 states and 106 transitions. [2022-11-16 12:29:33,080 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.5) internal successors, (20), 8 states have internal predecessors, (20), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-16 12:29:33,080 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 106 transitions. [2022-11-16 12:29:33,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-16 12:29:33,081 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:29:33,081 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:29:33,098 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8160929a-9e4c-41f1-afae-433f8348cbbd/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-11-16 12:29:33,281 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8160929a-9e4c-41f1-afae-433f8348cbbd/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:29:33,282 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_kobject_putErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-11-16 12:29:33,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:29:33,282 INFO L85 PathProgramCache]: Analyzing trace with hash 1276371002, now seen corresponding path program 1 times [2022-11-16 12:29:33,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:29:33,283 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [718161092] [2022-11-16 12:29:33,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:29:33,283 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 [2022-11-16 12:29:33,283 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8160929a-9e4c-41f1-afae-433f8348cbbd/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:29:33,284 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8160929a-9e4c-41f1-afae-433f8348cbbd/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:29:33,285 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8160929a-9e4c-41f1-afae-433f8348cbbd/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-11-16 12:29:33,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:29:33,373 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-16 12:29:33,376 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:29:33,488 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:29:33,489 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:29:33,489 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:29:33,489 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [718161092] [2022-11-16 12:29:33,489 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [718161092] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:29:33,489 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:29:33,490 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 12:29:33,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947184304] [2022-11-16 12:29:33,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:29:33,491 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 12:29:33,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:29:33,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 12:29:33,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-16 12:29:33,492 INFO L87 Difference]: Start difference. First operand 98 states and 106 transitions. Second operand has 7 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-16 12:29:33,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:29:33,608 INFO L93 Difference]: Finished difference Result 113 states and 122 transitions. [2022-11-16 12:29:33,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-16 12:29:33,609 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 18 [2022-11-16 12:29:33,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:29:33,610 INFO L225 Difference]: With dead ends: 113 [2022-11-16 12:29:33,610 INFO L226 Difference]: Without dead ends: 113 [2022-11-16 12:29:33,610 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2022-11-16 12:29:33,611 INFO L413 NwaCegarLoop]: 93 mSDtfsCounter, 21 mSDsluCounter, 452 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 545 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:29:33,611 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 545 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 12:29:33,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2022-11-16 12:29:33,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 108. [2022-11-16 12:29:33,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 74 states have (on average 1.4054054054054055) internal successors, (104), 98 states have internal predecessors, (104), 6 states have call successors, (6), 4 states have call predecessors, (6), 5 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2022-11-16 12:29:33,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 117 transitions. [2022-11-16 12:29:33,616 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 117 transitions. Word has length 18 [2022-11-16 12:29:33,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:29:33,616 INFO L495 AbstractCegarLoop]: Abstraction has 108 states and 117 transitions. [2022-11-16 12:29:33,617 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-16 12:29:33,617 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 117 transitions. [2022-11-16 12:29:33,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-16 12:29:33,617 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:29:33,618 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:29:33,633 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8160929a-9e4c-41f1-afae-433f8348cbbd/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-11-16 12:29:33,828 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8160929a-9e4c-41f1-afae-433f8348cbbd/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:29:33,829 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-11-16 12:29:33,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:29:33,829 INFO L85 PathProgramCache]: Analyzing trace with hash 1965719801, now seen corresponding path program 2 times [2022-11-16 12:29:33,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:29:33,830 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1059338303] [2022-11-16 12:29:33,830 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 12:29:33,830 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:29:33,830 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8160929a-9e4c-41f1-afae-433f8348cbbd/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:29:33,832 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8160929a-9e4c-41f1-afae-433f8348cbbd/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:29:33,875 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8160929a-9e4c-41f1-afae-433f8348cbbd/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-11-16 12:29:33,916 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-16 12:29:33,917 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:29:33,919 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-16 12:29:33,921 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:29:33,926 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-16 12:29:34,010 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-16 12:29:34,010 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:29:34,011 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:29:34,011 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1059338303] [2022-11-16 12:29:34,011 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1059338303] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:29:34,011 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:29:34,011 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 12:29:34,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384607514] [2022-11-16 12:29:34,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:29:34,012 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 12:29:34,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:29:34,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 12:29:34,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-16 12:29:34,013 INFO L87 Difference]: Start difference. First operand 108 states and 117 transitions. Second operand has 8 states, 7 states have (on average 2.142857142857143) internal successors, (15), 7 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-16 12:29:34,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:29:34,552 INFO L93 Difference]: Finished difference Result 142 states and 155 transitions. [2022-11-16 12:29:34,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-16 12:29:34,552 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.142857142857143) internal successors, (15), 7 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 20 [2022-11-16 12:29:34,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:29:34,553 INFO L225 Difference]: With dead ends: 142 [2022-11-16 12:29:34,554 INFO L226 Difference]: Without dead ends: 142 [2022-11-16 12:29:34,554 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2022-11-16 12:29:34,554 INFO L413 NwaCegarLoop]: 116 mSDtfsCounter, 95 mSDsluCounter, 421 mSDsCounter, 0 mSdLazyCounter, 261 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 537 SdHoareTripleChecker+Invalid, 265 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-16 12:29:34,555 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [95 Valid, 537 Invalid, 265 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 261 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-16 12:29:34,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2022-11-16 12:29:34,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 107. [2022-11-16 12:29:34,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 74 states have (on average 1.3918918918918919) internal successors, (103), 97 states have internal predecessors, (103), 6 states have call successors, (6), 4 states have call predecessors, (6), 5 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2022-11-16 12:29:34,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 116 transitions. [2022-11-16 12:29:34,559 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 116 transitions. Word has length 20 [2022-11-16 12:29:34,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:29:34,560 INFO L495 AbstractCegarLoop]: Abstraction has 107 states and 116 transitions. [2022-11-16 12:29:34,560 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.142857142857143) internal successors, (15), 7 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-16 12:29:34,560 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 116 transitions. [2022-11-16 12:29:34,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-16 12:29:34,561 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:29:34,561 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:29:34,578 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8160929a-9e4c-41f1-afae-433f8348cbbd/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-11-16 12:29:34,761 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8160929a-9e4c-41f1-afae-433f8348cbbd/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:29:34,761 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-11-16 12:29:34,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:29:34,762 INFO L85 PathProgramCache]: Analyzing trace with hash 1965719802, now seen corresponding path program 1 times [2022-11-16 12:29:34,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:29:34,762 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1342279883] [2022-11-16 12:29:34,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:29:34,763 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:29:34,763 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8160929a-9e4c-41f1-afae-433f8348cbbd/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:29:34,764 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8160929a-9e4c-41f1-afae-433f8348cbbd/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:29:34,778 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8160929a-9e4c-41f1-afae-433f8348cbbd/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-11-16 12:29:34,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:29:34,880 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-16 12:29:34,881 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:29:34,982 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:29:34,982 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:29:35,206 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:29:35,206 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:29:35,206 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1342279883] [2022-11-16 12:29:35,207 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1342279883] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:29:35,207 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:29:35,207 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2022-11-16 12:29:35,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816981251] [2022-11-16 12:29:35,207 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 12:29:35,207 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-16 12:29:35,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:29:35,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-16 12:29:35,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2022-11-16 12:29:35,208 INFO L87 Difference]: Start difference. First operand 107 states and 116 transitions. Second operand has 14 states, 14 states have (on average 1.8571428571428572) internal successors, (26), 14 states have internal predecessors, (26), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-16 12:29:35,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:29:35,553 INFO L93 Difference]: Finished difference Result 116 states and 124 transitions. [2022-11-16 12:29:35,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-16 12:29:35,554 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 1.8571428571428572) internal successors, (26), 14 states have internal predecessors, (26), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 20 [2022-11-16 12:29:35,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:29:35,555 INFO L225 Difference]: With dead ends: 116 [2022-11-16 12:29:35,555 INFO L226 Difference]: Without dead ends: 116 [2022-11-16 12:29:35,555 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=131, Invalid=211, Unknown=0, NotChecked=0, Total=342 [2022-11-16 12:29:35,556 INFO L413 NwaCegarLoop]: 105 mSDtfsCounter, 84 mSDsluCounter, 677 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 782 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:29:35,556 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 782 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 12:29:35,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2022-11-16 12:29:35,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 113. [2022-11-16 12:29:35,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 80 states have (on average 1.3625) internal successors, (109), 103 states have internal predecessors, (109), 6 states have call successors, (6), 4 states have call predecessors, (6), 5 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2022-11-16 12:29:35,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 122 transitions. [2022-11-16 12:29:35,560 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 122 transitions. Word has length 20 [2022-11-16 12:29:35,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:29:35,561 INFO L495 AbstractCegarLoop]: Abstraction has 113 states and 122 transitions. [2022-11-16 12:29:35,561 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 1.8571428571428572) internal successors, (26), 14 states have internal predecessors, (26), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-16 12:29:35,561 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 122 transitions. [2022-11-16 12:29:35,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-11-16 12:29:35,563 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:29:35,564 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:29:35,577 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8160929a-9e4c-41f1-afae-433f8348cbbd/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-11-16 12:29:35,773 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8160929a-9e4c-41f1-afae-433f8348cbbd/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:29:35,774 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-11-16 12:29:35,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:29:35,774 INFO L85 PathProgramCache]: Analyzing trace with hash 1184735654, now seen corresponding path program 1 times [2022-11-16 12:29:35,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:29:35,774 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [214473528] [2022-11-16 12:29:35,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:29:35,775 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:29:35,775 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8160929a-9e4c-41f1-afae-433f8348cbbd/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:29:35,776 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8160929a-9e4c-41f1-afae-433f8348cbbd/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:29:35,793 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8160929a-9e4c-41f1-afae-433f8348cbbd/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-11-16 12:29:35,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:29:35,882 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-16 12:29:35,884 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:29:35,953 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-16 12:29:35,953 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:29:35,953 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:29:35,953 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [214473528] [2022-11-16 12:29:35,953 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [214473528] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:29:35,954 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:29:35,954 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:29:35,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085229736] [2022-11-16 12:29:35,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:29:35,955 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:29:35,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:29:35,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:29:35,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:29:35,956 INFO L87 Difference]: Start difference. First operand 113 states and 122 transitions. Second operand has 4 states, 3 states have (on average 6.0) internal successors, (18), 4 states have internal predecessors, (18), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 12:29:36,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:29:36,134 INFO L93 Difference]: Finished difference Result 119 states and 128 transitions. [2022-11-16 12:29:36,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 12:29:36,135 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.0) internal successors, (18), 4 states have internal predecessors, (18), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 27 [2022-11-16 12:29:36,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:29:36,136 INFO L225 Difference]: With dead ends: 119 [2022-11-16 12:29:36,136 INFO L226 Difference]: Without dead ends: 101 [2022-11-16 12:29:36,136 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:29:36,137 INFO L413 NwaCegarLoop]: 81 mSDtfsCounter, 31 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 184 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 12:29:36,137 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 184 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-16 12:29:36,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2022-11-16 12:29:36,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 97. [2022-11-16 12:29:36,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 68 states have (on average 1.411764705882353) internal successors, (96), 90 states have internal predecessors, (96), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-16 12:29:36,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 104 transitions. [2022-11-16 12:29:36,141 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 104 transitions. Word has length 27 [2022-11-16 12:29:36,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:29:36,141 INFO L495 AbstractCegarLoop]: Abstraction has 97 states and 104 transitions. [2022-11-16 12:29:36,141 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.0) internal successors, (18), 4 states have internal predecessors, (18), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 12:29:36,141 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 104 transitions. [2022-11-16 12:29:36,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-11-16 12:29:36,142 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:29:36,142 INFO L195 NwaCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:29:36,159 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8160929a-9e4c-41f1-afae-433f8348cbbd/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2022-11-16 12:29:36,351 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8160929a-9e4c-41f1-afae-433f8348cbbd/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:29:36,352 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-11-16 12:29:36,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:29:36,352 INFO L85 PathProgramCache]: Analyzing trace with hash -103060070, now seen corresponding path program 2 times [2022-11-16 12:29:36,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:29:36,353 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1103476064] [2022-11-16 12:29:36,353 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 12:29:36,353 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:29:36,353 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8160929a-9e4c-41f1-afae-433f8348cbbd/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:29:36,354 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8160929a-9e4c-41f1-afae-433f8348cbbd/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:29:36,359 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8160929a-9e4c-41f1-afae-433f8348cbbd/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-11-16 12:29:36,446 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-16 12:29:36,446 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:29:36,449 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-16 12:29:36,453 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:29:36,470 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-16 12:29:36,686 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-11-16 12:29:36,686 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:29:36,686 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:29:36,686 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1103476064] [2022-11-16 12:29:36,686 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1103476064] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:29:36,686 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:29:36,686 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-16 12:29:36,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126547646] [2022-11-16 12:29:36,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:29:36,687 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-16 12:29:36,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:29:36,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-16 12:29:36,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-16 12:29:36,688 INFO L87 Difference]: Start difference. First operand 97 states and 104 transitions. Second operand has 9 states, 8 states have (on average 1.875) internal successors, (15), 8 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-16 12:29:37,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:29:37,406 INFO L93 Difference]: Finished difference Result 141 states and 152 transitions. [2022-11-16 12:29:37,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 12:29:37,407 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 1.875) internal successors, (15), 8 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 26 [2022-11-16 12:29:37,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:29:37,408 INFO L225 Difference]: With dead ends: 141 [2022-11-16 12:29:37,408 INFO L226 Difference]: Without dead ends: 141 [2022-11-16 12:29:37,408 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2022-11-16 12:29:37,409 INFO L413 NwaCegarLoop]: 116 mSDtfsCounter, 105 mSDsluCounter, 504 mSDsCounter, 0 mSdLazyCounter, 273 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 620 SdHoareTripleChecker+Invalid, 295 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 273 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-16 12:29:37,409 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 620 Invalid, 295 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 273 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-16 12:29:37,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2022-11-16 12:29:37,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 96. [2022-11-16 12:29:37,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 68 states have (on average 1.3970588235294117) internal successors, (95), 89 states have internal predecessors, (95), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-16 12:29:37,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 103 transitions. [2022-11-16 12:29:37,413 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 103 transitions. Word has length 26 [2022-11-16 12:29:37,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:29:37,413 INFO L495 AbstractCegarLoop]: Abstraction has 96 states and 103 transitions. [2022-11-16 12:29:37,413 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 1.875) internal successors, (15), 8 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-16 12:29:37,414 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 103 transitions. [2022-11-16 12:29:37,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-11-16 12:29:37,414 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:29:37,414 INFO L195 NwaCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:29:37,431 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8160929a-9e4c-41f1-afae-433f8348cbbd/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2022-11-16 12:29:37,624 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8160929a-9e4c-41f1-afae-433f8348cbbd/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:29:37,624 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-11-16 12:29:37,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:29:37,625 INFO L85 PathProgramCache]: Analyzing trace with hash -257987495, now seen corresponding path program 1 times [2022-11-16 12:29:37,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:29:37,625 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2129965816] [2022-11-16 12:29:37,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:29:37,625 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:29:37,626 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8160929a-9e4c-41f1-afae-433f8348cbbd/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:29:37,628 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8160929a-9e4c-41f1-afae-433f8348cbbd/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:29:37,671 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8160929a-9e4c-41f1-afae-433f8348cbbd/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2022-11-16 12:29:37,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:29:37,779 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-16 12:29:37,782 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:29:38,020 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:29:38,020 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:29:38,640 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:29:38,640 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:29:38,640 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2129965816] [2022-11-16 12:29:38,640 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2129965816] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:29:38,640 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:29:38,641 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 26 [2022-11-16 12:29:38,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603729093] [2022-11-16 12:29:38,641 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 12:29:38,641 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-11-16 12:29:38,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:29:38,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-11-16 12:29:38,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=178, Invalid=472, Unknown=0, NotChecked=0, Total=650 [2022-11-16 12:29:38,642 INFO L87 Difference]: Start difference. First operand 96 states and 103 transitions. Second operand has 26 states, 26 states have (on average 1.5384615384615385) internal successors, (40), 26 states have internal predecessors, (40), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-16 12:29:39,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:29:39,260 INFO L93 Difference]: Finished difference Result 102 states and 109 transitions. [2022-11-16 12:29:39,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-16 12:29:39,261 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 1.5384615384615385) internal successors, (40), 26 states have internal predecessors, (40), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 28 [2022-11-16 12:29:39,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:29:39,262 INFO L225 Difference]: With dead ends: 102 [2022-11-16 12:29:39,262 INFO L226 Difference]: Without dead ends: 102 [2022-11-16 12:29:39,262 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 193 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=278, Invalid=652, Unknown=0, NotChecked=0, Total=930 [2022-11-16 12:29:39,263 INFO L413 NwaCegarLoop]: 90 mSDtfsCounter, 47 mSDsluCounter, 1146 mSDsCounter, 0 mSdLazyCounter, 179 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 1236 SdHoareTripleChecker+Invalid, 194 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-16 12:29:39,263 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 1236 Invalid, 194 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 179 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-16 12:29:39,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2022-11-16 12:29:39,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 102. [2022-11-16 12:29:39,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 74 states have (on average 1.364864864864865) internal successors, (101), 95 states have internal predecessors, (101), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-16 12:29:39,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 109 transitions. [2022-11-16 12:29:39,266 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 109 transitions. Word has length 28 [2022-11-16 12:29:39,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:29:39,266 INFO L495 AbstractCegarLoop]: Abstraction has 102 states and 109 transitions. [2022-11-16 12:29:39,267 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 1.5384615384615385) internal successors, (40), 26 states have internal predecessors, (40), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-16 12:29:39,267 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 109 transitions. [2022-11-16 12:29:39,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-11-16 12:29:39,267 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:29:39,267 INFO L195 NwaCegarLoop]: trace histogram [16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:29:39,283 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8160929a-9e4c-41f1-afae-433f8348cbbd/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2022-11-16 12:29:39,468 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8160929a-9e4c-41f1-afae-433f8348cbbd/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:29:39,468 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-11-16 12:29:39,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:29:39,468 INFO L85 PathProgramCache]: Analyzing trace with hash -2039891719, now seen corresponding path program 2 times [2022-11-16 12:29:39,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:29:39,469 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [174197474] [2022-11-16 12:29:39,469 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 12:29:39,469 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:29:39,469 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8160929a-9e4c-41f1-afae-433f8348cbbd/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:29:39,471 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8160929a-9e4c-41f1-afae-433f8348cbbd/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:29:39,480 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8160929a-9e4c-41f1-afae-433f8348cbbd/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2022-11-16 12:29:39,593 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-16 12:29:39,593 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:29:39,596 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-16 12:29:39,598 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:29:39,671 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2022-11-16 12:29:39,671 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:29:39,672 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:29:39,672 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [174197474] [2022-11-16 12:29:39,672 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [174197474] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:29:39,672 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:29:39,672 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-16 12:29:39,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777297752] [2022-11-16 12:29:39,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:29:39,672 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:29:39,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:29:39,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:29:39,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:29:39,674 INFO L87 Difference]: Start difference. First operand 102 states and 109 transitions. Second operand has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 5 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-16 12:29:39,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:29:39,721 INFO L93 Difference]: Finished difference Result 102 states and 108 transitions. [2022-11-16 12:29:39,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 12:29:39,722 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 5 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 34 [2022-11-16 12:29:39,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:29:39,722 INFO L225 Difference]: With dead ends: 102 [2022-11-16 12:29:39,722 INFO L226 Difference]: Without dead ends: 102 [2022-11-16 12:29:39,723 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-16 12:29:39,723 INFO L413 NwaCegarLoop]: 87 mSDtfsCounter, 53 mSDsluCounter, 284 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 371 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 12:29:39,724 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 371 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 12:29:39,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2022-11-16 12:29:39,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 102. [2022-11-16 12:29:39,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 74 states have (on average 1.3513513513513513) internal successors, (100), 95 states have internal predecessors, (100), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-16 12:29:39,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 108 transitions. [2022-11-16 12:29:39,727 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 108 transitions. Word has length 34 [2022-11-16 12:29:39,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:29:39,727 INFO L495 AbstractCegarLoop]: Abstraction has 102 states and 108 transitions. [2022-11-16 12:29:39,728 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 5 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-16 12:29:39,728 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 108 transitions. [2022-11-16 12:29:39,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-16 12:29:39,728 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:29:39,729 INFO L195 NwaCegarLoop]: trace histogram [16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:29:39,748 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8160929a-9e4c-41f1-afae-433f8348cbbd/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2022-11-16 12:29:39,929 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8160929a-9e4c-41f1-afae-433f8348cbbd/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:29:39,929 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-11-16 12:29:39,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:29:39,930 INFO L85 PathProgramCache]: Analyzing trace with hash -382086172, now seen corresponding path program 1 times [2022-11-16 12:29:39,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:29:39,930 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1835465021] [2022-11-16 12:29:39,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:29:39,930 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:29:39,930 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8160929a-9e4c-41f1-afae-433f8348cbbd/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:29:39,931 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8160929a-9e4c-41f1-afae-433f8348cbbd/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:29:39,933 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8160929a-9e4c-41f1-afae-433f8348cbbd/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2022-11-16 12:29:40,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:29:40,152 INFO L263 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-16 12:29:40,155 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:29:40,161 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-16 12:29:40,348 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2022-11-16 12:29:40,349 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:29:40,349 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:29:40,349 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1835465021] [2022-11-16 12:29:40,349 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1835465021] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:29:40,350 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:29:40,350 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-16 12:29:40,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660309358] [2022-11-16 12:29:40,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:29:40,351 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-16 12:29:40,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:29:40,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-16 12:29:40,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-16 12:29:40,353 INFO L87 Difference]: Start difference. First operand 102 states and 108 transitions. Second operand has 9 states, 8 states have (on average 2.25) internal successors, (18), 7 states have internal predecessors, (18), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-16 12:29:40,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:29:40,869 INFO L93 Difference]: Finished difference Result 100 states and 106 transitions. [2022-11-16 12:29:40,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 12:29:40,870 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.25) internal successors, (18), 7 states have internal predecessors, (18), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 36 [2022-11-16 12:29:40,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:29:40,871 INFO L225 Difference]: With dead ends: 100 [2022-11-16 12:29:40,871 INFO L226 Difference]: Without dead ends: 100 [2022-11-16 12:29:40,871 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2022-11-16 12:29:40,872 INFO L413 NwaCegarLoop]: 70 mSDtfsCounter, 77 mSDsluCounter, 321 mSDsCounter, 0 mSdLazyCounter, 233 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 391 SdHoareTripleChecker+Invalid, 237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 233 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-16 12:29:40,872 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 391 Invalid, 237 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 233 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-16 12:29:40,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2022-11-16 12:29:40,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 100. [2022-11-16 12:29:40,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 74 states have (on average 1.3243243243243243) internal successors, (98), 93 states have internal predecessors, (98), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-16 12:29:40,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 106 transitions. [2022-11-16 12:29:40,876 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 106 transitions. Word has length 36 [2022-11-16 12:29:40,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:29:40,876 INFO L495 AbstractCegarLoop]: Abstraction has 100 states and 106 transitions. [2022-11-16 12:29:40,876 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.25) internal successors, (18), 7 states have internal predecessors, (18), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-16 12:29:40,877 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 106 transitions. [2022-11-16 12:29:40,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-16 12:29:40,877 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:29:40,877 INFO L195 NwaCegarLoop]: trace histogram [16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:29:40,901 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8160929a-9e4c-41f1-afae-433f8348cbbd/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2022-11-16 12:29:41,078 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8160929a-9e4c-41f1-afae-433f8348cbbd/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:29:41,078 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-11-16 12:29:41,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:29:41,079 INFO L85 PathProgramCache]: Analyzing trace with hash -382086171, now seen corresponding path program 1 times [2022-11-16 12:29:41,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:29:41,079 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [395328199] [2022-11-16 12:29:41,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:29:41,079 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:29:41,079 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8160929a-9e4c-41f1-afae-433f8348cbbd/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:29:41,080 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8160929a-9e4c-41f1-afae-433f8348cbbd/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:29:41,086 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8160929a-9e4c-41f1-afae-433f8348cbbd/bin/uautomizer-tPACEb0tL8/mathsat -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 [2022-11-16 12:29:41,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:29:41,320 INFO L263 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-16 12:29:41,324 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:29:41,349 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-16 12:29:41,710 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2022-11-16 12:29:41,710 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:29:41,710 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:29:41,711 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [395328199] [2022-11-16 12:29:41,711 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [395328199] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:29:41,711 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:29:41,711 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-16 12:29:41,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900600808] [2022-11-16 12:29:41,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:29:41,712 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 12:29:41,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:29:41,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 12:29:41,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-11-16 12:29:41,713 INFO L87 Difference]: Start difference. First operand 100 states and 106 transitions. Second operand has 10 states, 9 states have (on average 2.0) internal successors, (18), 8 states have internal predecessors, (18), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-16 12:29:42,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:29:42,331 INFO L93 Difference]: Finished difference Result 98 states and 104 transitions. [2022-11-16 12:29:42,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-16 12:29:42,332 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.0) internal successors, (18), 8 states have internal predecessors, (18), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 36 [2022-11-16 12:29:42,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:29:42,333 INFO L225 Difference]: With dead ends: 98 [2022-11-16 12:29:42,333 INFO L226 Difference]: Without dead ends: 98 [2022-11-16 12:29:42,334 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2022-11-16 12:29:42,334 INFO L413 NwaCegarLoop]: 69 mSDtfsCounter, 84 mSDsluCounter, 403 mSDsCounter, 0 mSdLazyCounter, 210 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 472 SdHoareTripleChecker+Invalid, 220 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 210 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-16 12:29:42,335 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 472 Invalid, 220 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 210 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-16 12:29:42,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2022-11-16 12:29:42,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 98. [2022-11-16 12:29:42,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 74 states have (on average 1.2972972972972974) internal successors, (96), 91 states have internal predecessors, (96), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-16 12:29:42,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 104 transitions. [2022-11-16 12:29:42,340 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 104 transitions. Word has length 36 [2022-11-16 12:29:42,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:29:42,340 INFO L495 AbstractCegarLoop]: Abstraction has 98 states and 104 transitions. [2022-11-16 12:29:42,340 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.0) internal successors, (18), 8 states have internal predecessors, (18), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-16 12:29:42,341 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 104 transitions. [2022-11-16 12:29:42,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-16 12:29:42,341 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:29:42,342 INFO L195 NwaCegarLoop]: trace histogram [16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:29:42,358 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8160929a-9e4c-41f1-afae-433f8348cbbd/bin/uautomizer-tPACEb0tL8/mathsat -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)] Ended with exit code 0 [2022-11-16 12:29:42,555 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8160929a-9e4c-41f1-afae-433f8348cbbd/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:29:42,556 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-11-16 12:29:42,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:29:42,556 INFO L85 PathProgramCache]: Analyzing trace with hash -432796251, now seen corresponding path program 1 times [2022-11-16 12:29:42,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:29:42,556 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1832690038] [2022-11-16 12:29:42,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:29:42,557 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:29:42,557 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8160929a-9e4c-41f1-afae-433f8348cbbd/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:29:42,558 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8160929a-9e4c-41f1-afae-433f8348cbbd/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:29:42,559 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8160929a-9e4c-41f1-afae-433f8348cbbd/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2022-11-16 12:29:42,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:29:42,756 INFO L263 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-16 12:29:42,758 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:29:42,869 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2022-11-16 12:29:42,870 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:29:42,870 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:29:42,870 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1832690038] [2022-11-16 12:29:42,871 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1832690038] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:29:42,871 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:29:42,871 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 12:29:42,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009784617] [2022-11-16 12:29:42,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:29:42,872 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 12:29:42,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:29:42,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 12:29:42,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-16 12:29:42,873 INFO L87 Difference]: Start difference. First operand 98 states and 104 transitions. Second operand has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 6 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-16 12:29:42,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:29:42,953 INFO L93 Difference]: Finished difference Result 98 states and 103 transitions. [2022-11-16 12:29:42,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 12:29:42,954 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 6 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 36 [2022-11-16 12:29:42,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:29:42,958 INFO L225 Difference]: With dead ends: 98 [2022-11-16 12:29:42,959 INFO L226 Difference]: Without dead ends: 98 [2022-11-16 12:29:42,959 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-11-16 12:29:42,960 INFO L413 NwaCegarLoop]: 81 mSDtfsCounter, 75 mSDsluCounter, 315 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 396 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:29:42,961 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 396 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 12:29:42,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2022-11-16 12:29:42,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 98. [2022-11-16 12:29:42,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 74 states have (on average 1.2837837837837838) internal successors, (95), 90 states have internal predecessors, (95), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-16 12:29:42,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 103 transitions. [2022-11-16 12:29:42,968 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 103 transitions. Word has length 36 [2022-11-16 12:29:42,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:29:42,970 INFO L495 AbstractCegarLoop]: Abstraction has 98 states and 103 transitions. [2022-11-16 12:29:42,970 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 6 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-16 12:29:42,970 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 103 transitions. [2022-11-16 12:29:42,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-11-16 12:29:42,972 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:29:42,972 INFO L195 NwaCegarLoop]: trace histogram [16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:29:42,992 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8160929a-9e4c-41f1-afae-433f8348cbbd/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2022-11-16 12:29:43,186 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8160929a-9e4c-41f1-afae-433f8348cbbd/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:29:43,186 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-11-16 12:29:43,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:29:43,187 INFO L85 PathProgramCache]: Analyzing trace with hash 74876930, now seen corresponding path program 1 times [2022-11-16 12:29:43,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:29:43,187 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1394420786] [2022-11-16 12:29:43,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:29:43,187 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:29:43,187 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8160929a-9e4c-41f1-afae-433f8348cbbd/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:29:43,188 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8160929a-9e4c-41f1-afae-433f8348cbbd/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:29:43,189 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8160929a-9e4c-41f1-afae-433f8348cbbd/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2022-11-16 12:29:43,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:29:43,438 INFO L263 TraceCheckSpWp]: Trace formula consists of 326 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-16 12:29:43,442 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:29:43,447 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-16 12:29:43,676 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2022-11-16 12:29:43,676 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:29:43,676 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:29:43,677 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1394420786] [2022-11-16 12:29:43,677 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1394420786] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:29:43,677 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:29:43,677 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-16 12:29:43,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1230512815] [2022-11-16 12:29:43,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:29:43,678 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-16 12:29:43,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:29:43,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-16 12:29:43,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-11-16 12:29:43,679 INFO L87 Difference]: Start difference. First operand 98 states and 103 transitions. Second operand has 9 states, 8 states have (on average 3.125) internal successors, (25), 8 states have internal predecessors, (25), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-16 12:29:44,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:29:44,063 INFO L93 Difference]: Finished difference Result 100 states and 106 transitions. [2022-11-16 12:29:44,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 12:29:44,064 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.125) internal successors, (25), 8 states have internal predecessors, (25), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 44 [2022-11-16 12:29:44,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:29:44,065 INFO L225 Difference]: With dead ends: 100 [2022-11-16 12:29:44,065 INFO L226 Difference]: Without dead ends: 100 [2022-11-16 12:29:44,065 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 35 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2022-11-16 12:29:44,066 INFO L413 NwaCegarLoop]: 71 mSDtfsCounter, 66 mSDsluCounter, 276 mSDsCounter, 0 mSdLazyCounter, 165 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 347 SdHoareTripleChecker+Invalid, 185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 19 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-16 12:29:44,066 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 347 Invalid, 185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 165 Invalid, 0 Unknown, 19 Unchecked, 0.3s Time] [2022-11-16 12:29:44,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2022-11-16 12:29:44,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 96. [2022-11-16 12:29:44,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 74 states have (on average 1.2567567567567568) internal successors, (93), 88 states have internal predecessors, (93), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-16 12:29:44,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 101 transitions. [2022-11-16 12:29:44,071 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 101 transitions. Word has length 44 [2022-11-16 12:29:44,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:29:44,071 INFO L495 AbstractCegarLoop]: Abstraction has 96 states and 101 transitions. [2022-11-16 12:29:44,072 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 3.125) internal successors, (25), 8 states have internal predecessors, (25), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-16 12:29:44,072 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 101 transitions. [2022-11-16 12:29:44,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-11-16 12:29:44,073 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:29:44,073 INFO L195 NwaCegarLoop]: trace histogram [16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:29:44,095 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8160929a-9e4c-41f1-afae-433f8348cbbd/bin/uautomizer-tPACEb0tL8/mathsat -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)] Forceful destruction successful, exit code 0 [2022-11-16 12:29:44,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8160929a-9e4c-41f1-afae-433f8348cbbd/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:29:44,288 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-11-16 12:29:44,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:29:44,288 INFO L85 PathProgramCache]: Analyzing trace with hash 74876931, now seen corresponding path program 1 times [2022-11-16 12:29:44,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:29:44,288 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [663488867] [2022-11-16 12:29:44,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:29:44,289 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:29:44,289 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8160929a-9e4c-41f1-afae-433f8348cbbd/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:29:44,290 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8160929a-9e4c-41f1-afae-433f8348cbbd/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:29:44,338 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8160929a-9e4c-41f1-afae-433f8348cbbd/bin/uautomizer-tPACEb0tL8/mathsat -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 [2022-11-16 12:29:44,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:29:44,593 INFO L263 TraceCheckSpWp]: Trace formula consists of 326 conjuncts, 31 conjunts are in the unsatisfiable core [2022-11-16 12:29:44,596 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:29:44,616 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-16 12:29:44,977 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2022-11-16 12:29:44,977 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:29:44,977 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:29:44,977 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [663488867] [2022-11-16 12:29:44,977 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [663488867] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:29:44,977 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:29:44,977 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-16 12:29:44,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641771328] [2022-11-16 12:29:44,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:29:44,978 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 12:29:44,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:29:44,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 12:29:44,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-11-16 12:29:44,979 INFO L87 Difference]: Start difference. First operand 96 states and 101 transitions. Second operand has 10 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 9 states have internal predecessors, (25), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-16 12:29:45,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:29:45,461 INFO L93 Difference]: Finished difference Result 103 states and 109 transitions. [2022-11-16 12:29:45,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-16 12:29:45,462 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 9 states have internal predecessors, (25), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 44 [2022-11-16 12:29:45,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:29:45,463 INFO L225 Difference]: With dead ends: 103 [2022-11-16 12:29:45,463 INFO L226 Difference]: Without dead ends: 103 [2022-11-16 12:29:45,463 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 34 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2022-11-16 12:29:45,464 INFO L413 NwaCegarLoop]: 75 mSDtfsCounter, 71 mSDsluCounter, 398 mSDsCounter, 0 mSdLazyCounter, 173 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 473 SdHoareTripleChecker+Invalid, 204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 16 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-16 12:29:45,464 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 473 Invalid, 204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 173 Invalid, 0 Unknown, 16 Unchecked, 0.4s Time] [2022-11-16 12:29:45,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2022-11-16 12:29:45,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 94. [2022-11-16 12:29:45,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 74 states have (on average 1.2297297297297298) internal successors, (91), 86 states have internal predecessors, (91), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-16 12:29:45,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 99 transitions. [2022-11-16 12:29:45,469 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 99 transitions. Word has length 44 [2022-11-16 12:29:45,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:29:45,469 INFO L495 AbstractCegarLoop]: Abstraction has 94 states and 99 transitions. [2022-11-16 12:29:45,469 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 9 states have internal predecessors, (25), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-16 12:29:45,470 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 99 transitions. [2022-11-16 12:29:45,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-11-16 12:29:45,470 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:29:45,470 INFO L195 NwaCegarLoop]: trace histogram [16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:29:45,484 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8160929a-9e4c-41f1-afae-433f8348cbbd/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2022-11-16 12:29:45,677 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8160929a-9e4c-41f1-afae-433f8348cbbd/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:29:45,678 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ldv_kobject_putErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-11-16 12:29:45,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:29:45,678 INFO L85 PathProgramCache]: Analyzing trace with hash 496438540, now seen corresponding path program 1 times [2022-11-16 12:29:45,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:29:45,679 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [698526251] [2022-11-16 12:29:45,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:29:45,679 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:29:45,679 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8160929a-9e4c-41f1-afae-433f8348cbbd/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:29:45,680 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8160929a-9e4c-41f1-afae-433f8348cbbd/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:29:45,686 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8160929a-9e4c-41f1-afae-433f8348cbbd/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2022-11-16 12:29:45,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:29:45,947 INFO L263 TraceCheckSpWp]: Trace formula consists of 361 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-16 12:29:45,949 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:29:46,072 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2022-11-16 12:29:46,072 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:29:46,073 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:29:46,073 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [698526251] [2022-11-16 12:29:46,073 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [698526251] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:29:46,073 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:29:46,073 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 12:29:46,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617664486] [2022-11-16 12:29:46,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:29:46,074 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 12:29:46,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:29:46,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 12:29:46,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-16 12:29:46,076 INFO L87 Difference]: Start difference. First operand 94 states and 99 transitions. Second operand has 7 states, 7 states have (on average 4.285714285714286) internal successors, (30), 6 states have internal predecessors, (30), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-16 12:29:46,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:29:46,157 INFO L93 Difference]: Finished difference Result 94 states and 98 transitions. [2022-11-16 12:29:46,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 12:29:46,158 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.285714285714286) internal successors, (30), 6 states have internal predecessors, (30), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 50 [2022-11-16 12:29:46,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:29:46,159 INFO L225 Difference]: With dead ends: 94 [2022-11-16 12:29:46,159 INFO L226 Difference]: Without dead ends: 94 [2022-11-16 12:29:46,159 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-11-16 12:29:46,160 INFO L413 NwaCegarLoop]: 75 mSDtfsCounter, 42 mSDsluCounter, 319 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 394 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:29:46,160 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 394 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 12:29:46,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2022-11-16 12:29:46,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 94. [2022-11-16 12:29:46,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 74 states have (on average 1.2162162162162162) internal successors, (90), 86 states have internal predecessors, (90), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-16 12:29:46,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 98 transitions. [2022-11-16 12:29:46,165 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 98 transitions. Word has length 50 [2022-11-16 12:29:46,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:29:46,165 INFO L495 AbstractCegarLoop]: Abstraction has 94 states and 98 transitions. [2022-11-16 12:29:46,166 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.285714285714286) internal successors, (30), 6 states have internal predecessors, (30), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-16 12:29:46,166 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 98 transitions. [2022-11-16 12:29:46,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-11-16 12:29:46,166 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:29:46,167 INFO L195 NwaCegarLoop]: trace histogram [16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:29:46,192 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8160929a-9e4c-41f1-afae-433f8348cbbd/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2022-11-16 12:29:46,386 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8160929a-9e4c-41f1-afae-433f8348cbbd/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:29:46,387 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ldv_kobject_putErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-11-16 12:29:46,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:29:46,387 INFO L85 PathProgramCache]: Analyzing trace with hash -774905870, now seen corresponding path program 1 times [2022-11-16 12:29:46,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:29:46,387 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [896802066] [2022-11-16 12:29:46,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:29:46,387 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:29:46,388 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8160929a-9e4c-41f1-afae-433f8348cbbd/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:29:46,388 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8160929a-9e4c-41f1-afae-433f8348cbbd/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:29:46,391 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8160929a-9e4c-41f1-afae-433f8348cbbd/bin/uautomizer-tPACEb0tL8/mathsat -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 [2022-11-16 12:29:46,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:29:46,700 INFO L263 TraceCheckSpWp]: Trace formula consists of 401 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-16 12:29:46,703 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:29:46,708 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-16 12:29:46,950 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2022-11-16 12:29:46,950 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:29:46,950 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:29:46,951 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [896802066] [2022-11-16 12:29:46,951 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [896802066] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:29:46,951 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:29:46,951 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-16 12:29:46,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036951487] [2022-11-16 12:29:46,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:29:46,952 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-16 12:29:46,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:29:46,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-16 12:29:46,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2022-11-16 12:29:46,952 INFO L87 Difference]: Start difference. First operand 94 states and 98 transitions. Second operand has 12 states, 10 states have (on average 3.6) internal successors, (36), 10 states have internal predecessors, (36), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-16 12:29:47,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:29:47,491 INFO L93 Difference]: Finished difference Result 123 states and 129 transitions. [2022-11-16 12:29:47,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-16 12:29:47,492 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 3.6) internal successors, (36), 10 states have internal predecessors, (36), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 56 [2022-11-16 12:29:47,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:29:47,493 INFO L225 Difference]: With dead ends: 123 [2022-11-16 12:29:47,493 INFO L226 Difference]: Without dead ends: 123 [2022-11-16 12:29:47,493 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 44 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=63, Invalid=209, Unknown=0, NotChecked=0, Total=272 [2022-11-16 12:29:47,494 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 139 mSDsluCounter, 288 mSDsCounter, 0 mSdLazyCounter, 214 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 345 SdHoareTripleChecker+Invalid, 233 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 16 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-16 12:29:47,494 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [139 Valid, 345 Invalid, 233 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 214 Invalid, 0 Unknown, 16 Unchecked, 0.4s Time] [2022-11-16 12:29:47,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2022-11-16 12:29:47,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 109. [2022-11-16 12:29:47,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 88 states have (on average 1.2159090909090908) internal successors, (107), 100 states have internal predecessors, (107), 4 states have call successors, (4), 4 states have call predecessors, (4), 5 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2022-11-16 12:29:47,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 117 transitions. [2022-11-16 12:29:47,507 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 117 transitions. Word has length 56 [2022-11-16 12:29:47,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:29:47,507 INFO L495 AbstractCegarLoop]: Abstraction has 109 states and 117 transitions. [2022-11-16 12:29:47,507 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 3.6) internal successors, (36), 10 states have internal predecessors, (36), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-16 12:29:47,507 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 117 transitions. [2022-11-16 12:29:47,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-11-16 12:29:47,508 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:29:47,508 INFO L195 NwaCegarLoop]: trace histogram [16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:29:47,520 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8160929a-9e4c-41f1-afae-433f8348cbbd/bin/uautomizer-tPACEb0tL8/mathsat -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 [2022-11-16 12:29:47,713 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8160929a-9e4c-41f1-afae-433f8348cbbd/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:29:47,714 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ldv_kobject_putErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-11-16 12:29:47,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:29:47,714 INFO L85 PathProgramCache]: Analyzing trace with hash -774905869, now seen corresponding path program 1 times [2022-11-16 12:29:47,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:29:47,715 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1549200794] [2022-11-16 12:29:47,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:29:47,715 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:29:47,715 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8160929a-9e4c-41f1-afae-433f8348cbbd/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:29:47,716 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8160929a-9e4c-41f1-afae-433f8348cbbd/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:29:47,720 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8160929a-9e4c-41f1-afae-433f8348cbbd/bin/uautomizer-tPACEb0tL8/mathsat -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 [2022-11-16 12:29:48,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:29:48,019 INFO L263 TraceCheckSpWp]: Trace formula consists of 401 conjuncts, 35 conjunts are in the unsatisfiable core [2022-11-16 12:29:48,022 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:29:48,045 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-16 12:29:48,562 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2022-11-16 12:29:48,562 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:29:48,562 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:29:48,563 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1549200794] [2022-11-16 12:29:48,563 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1549200794] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:29:48,563 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:29:48,563 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-16 12:29:48,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374926619] [2022-11-16 12:29:48,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:29:48,564 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-16 12:29:48,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:29:48,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-16 12:29:48,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2022-11-16 12:29:48,565 INFO L87 Difference]: Start difference. First operand 109 states and 117 transitions. Second operand has 13 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-16 12:29:49,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:29:49,234 INFO L93 Difference]: Finished difference Result 111 states and 117 transitions. [2022-11-16 12:29:49,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-16 12:29:49,235 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 56 [2022-11-16 12:29:49,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:29:49,236 INFO L225 Difference]: With dead ends: 111 [2022-11-16 12:29:49,236 INFO L226 Difference]: Without dead ends: 111 [2022-11-16 12:29:49,237 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 43 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=68, Invalid=274, Unknown=0, NotChecked=0, Total=342 [2022-11-16 12:29:49,238 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 151 mSDsluCounter, 376 mSDsCounter, 0 mSdLazyCounter, 237 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 431 SdHoareTripleChecker+Invalid, 254 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 7 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-16 12:29:49,238 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [151 Valid, 431 Invalid, 254 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 237 Invalid, 0 Unknown, 7 Unchecked, 0.5s Time] [2022-11-16 12:29:49,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2022-11-16 12:29:49,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 107. [2022-11-16 12:29:49,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 88 states have (on average 1.1704545454545454) internal successors, (103), 98 states have internal predecessors, (103), 4 states have call successors, (4), 4 states have call predecessors, (4), 5 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2022-11-16 12:29:49,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 113 transitions. [2022-11-16 12:29:49,243 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 113 transitions. Word has length 56 [2022-11-16 12:29:49,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:29:49,243 INFO L495 AbstractCegarLoop]: Abstraction has 107 states and 113 transitions. [2022-11-16 12:29:49,243 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-16 12:29:49,244 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 113 transitions. [2022-11-16 12:29:49,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-11-16 12:29:49,244 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:29:49,245 INFO L195 NwaCegarLoop]: trace histogram [16, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:29:49,258 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8160929a-9e4c-41f1-afae-433f8348cbbd/bin/uautomizer-tPACEb0tL8/mathsat -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 [2022-11-16 12:29:49,457 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8160929a-9e4c-41f1-afae-433f8348cbbd/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:29:49,458 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ldv_kobject_putErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-11-16 12:29:49,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:29:49,458 INFO L85 PathProgramCache]: Analyzing trace with hash -178952659, now seen corresponding path program 1 times [2022-11-16 12:29:49,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:29:49,458 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [541035654] [2022-11-16 12:29:49,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:29:49,459 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:29:49,459 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8160929a-9e4c-41f1-afae-433f8348cbbd/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:29:49,460 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8160929a-9e4c-41f1-afae-433f8348cbbd/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:29:49,498 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8160929a-9e4c-41f1-afae-433f8348cbbd/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2022-11-16 12:29:49,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:29:49,802 INFO L263 TraceCheckSpWp]: Trace formula consists of 418 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-16 12:29:49,805 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:29:49,955 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2022-11-16 12:29:49,955 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:29:49,956 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:29:49,956 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [541035654] [2022-11-16 12:29:49,956 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [541035654] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:29:49,956 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:29:49,956 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-16 12:29:49,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006897166] [2022-11-16 12:29:49,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:29:49,956 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 12:29:49,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:29:49,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 12:29:49,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-11-16 12:29:49,957 INFO L87 Difference]: Start difference. First operand 107 states and 113 transitions. Second operand has 10 states, 9 states have (on average 4.444444444444445) internal successors, (40), 9 states have internal predecessors, (40), 4 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 12:29:50,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:29:50,126 INFO L93 Difference]: Finished difference Result 111 states and 115 transitions. [2022-11-16 12:29:50,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-16 12:29:50,127 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 4.444444444444445) internal successors, (40), 9 states have internal predecessors, (40), 4 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 62 [2022-11-16 12:29:50,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:29:50,128 INFO L225 Difference]: With dead ends: 111 [2022-11-16 12:29:50,128 INFO L226 Difference]: Without dead ends: 107 [2022-11-16 12:29:50,128 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2022-11-16 12:29:50,129 INFO L413 NwaCegarLoop]: 69 mSDtfsCounter, 71 mSDsluCounter, 445 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 514 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:29:50,129 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 514 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 12:29:50,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2022-11-16 12:29:50,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 107. [2022-11-16 12:29:50,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 88 states have (on average 1.1477272727272727) internal successors, (101), 98 states have internal predecessors, (101), 4 states have call successors, (4), 4 states have call predecessors, (4), 5 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2022-11-16 12:29:50,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 111 transitions. [2022-11-16 12:29:50,134 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 111 transitions. Word has length 62 [2022-11-16 12:29:50,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:29:50,135 INFO L495 AbstractCegarLoop]: Abstraction has 107 states and 111 transitions. [2022-11-16 12:29:50,135 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 4.444444444444445) internal successors, (40), 9 states have internal predecessors, (40), 4 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 12:29:50,135 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 111 transitions. [2022-11-16 12:29:50,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-11-16 12:29:50,136 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:29:50,136 INFO L195 NwaCegarLoop]: trace histogram [16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:29:50,151 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8160929a-9e4c-41f1-afae-433f8348cbbd/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2022-11-16 12:29:50,350 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8160929a-9e4c-41f1-afae-433f8348cbbd/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:29:50,351 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ldv_kobject_putErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-11-16 12:29:50,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:29:50,351 INFO L85 PathProgramCache]: Analyzing trace with hash 59491574, now seen corresponding path program 1 times [2022-11-16 12:29:50,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:29:50,352 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1971541495] [2022-11-16 12:29:50,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:29:50,352 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:29:50,352 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8160929a-9e4c-41f1-afae-433f8348cbbd/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:29:50,353 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8160929a-9e4c-41f1-afae-433f8348cbbd/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:29:50,391 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8160929a-9e4c-41f1-afae-433f8348cbbd/bin/uautomizer-tPACEb0tL8/mathsat -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 [2022-11-16 12:29:50,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:29:50,804 INFO L263 TraceCheckSpWp]: Trace formula consists of 450 conjuncts, 26 conjunts are in the unsatisfiable core [2022-11-16 12:29:50,807 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:29:50,811 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-16 12:29:51,119 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2022-11-16 12:29:51,120 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:29:51,120 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:29:51,120 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1971541495] [2022-11-16 12:29:51,120 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1971541495] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:29:51,120 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:29:51,120 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-16 12:29:51,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974651337] [2022-11-16 12:29:51,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:29:51,121 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-16 12:29:51,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:29:51,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-16 12:29:51,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2022-11-16 12:29:51,122 INFO L87 Difference]: Start difference. First operand 107 states and 111 transitions. Second operand has 13 states, 11 states have (on average 3.8181818181818183) internal successors, (42), 11 states have internal predecessors, (42), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-16 12:29:51,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:29:51,814 INFO L93 Difference]: Finished difference Result 116 states and 122 transitions. [2022-11-16 12:29:51,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-16 12:29:51,815 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 3.8181818181818183) internal successors, (42), 11 states have internal predecessors, (42), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 62 [2022-11-16 12:29:51,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:29:51,816 INFO L225 Difference]: With dead ends: 116 [2022-11-16 12:29:51,816 INFO L226 Difference]: Without dead ends: 116 [2022-11-16 12:29:51,816 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 49 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=75, Invalid=267, Unknown=0, NotChecked=0, Total=342 [2022-11-16 12:29:51,817 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 99 mSDsluCounter, 412 mSDsCounter, 0 mSdLazyCounter, 330 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 465 SdHoareTripleChecker+Invalid, 351 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 330 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 17 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-16 12:29:51,817 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [99 Valid, 465 Invalid, 351 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 330 Invalid, 0 Unknown, 17 Unchecked, 0.6s Time] [2022-11-16 12:29:51,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2022-11-16 12:29:51,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 107. [2022-11-16 12:29:51,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 89 states have (on average 1.146067415730337) internal successors, (102), 98 states have internal predecessors, (102), 4 states have call successors, (4), 4 states have call predecessors, (4), 5 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2022-11-16 12:29:51,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 112 transitions. [2022-11-16 12:29:51,827 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 112 transitions. Word has length 62 [2022-11-16 12:29:51,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:29:51,828 INFO L495 AbstractCegarLoop]: Abstraction has 107 states and 112 transitions. [2022-11-16 12:29:51,828 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 3.8181818181818183) internal successors, (42), 11 states have internal predecessors, (42), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-16 12:29:51,828 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 112 transitions. [2022-11-16 12:29:51,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-11-16 12:29:51,835 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:29:51,835 INFO L195 NwaCegarLoop]: trace histogram [16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:29:51,857 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8160929a-9e4c-41f1-afae-433f8348cbbd/bin/uautomizer-tPACEb0tL8/mathsat -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 [2022-11-16 12:29:52,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8160929a-9e4c-41f1-afae-433f8348cbbd/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:29:52,052 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ldv_kobject_putErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-11-16 12:29:52,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:29:52,053 INFO L85 PathProgramCache]: Analyzing trace with hash 59491575, now seen corresponding path program 1 times [2022-11-16 12:29:52,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:29:52,053 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2045723351] [2022-11-16 12:29:52,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:29:52,053 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 [2022-11-16 12:29:52,054 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8160929a-9e4c-41f1-afae-433f8348cbbd/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:29:52,054 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8160929a-9e4c-41f1-afae-433f8348cbbd/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:29:52,056 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8160929a-9e4c-41f1-afae-433f8348cbbd/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2022-11-16 12:29:52,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:29:52,426 INFO L263 TraceCheckSpWp]: Trace formula consists of 450 conjuncts, 47 conjunts are in the unsatisfiable core [2022-11-16 12:29:52,428 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:29:52,440 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-16 12:29:52,964 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2022-11-16 12:29:52,964 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:29:52,964 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:29:52,964 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2045723351] [2022-11-16 12:29:52,965 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2045723351] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:29:52,965 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:29:52,965 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-11-16 12:29:52,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428450552] [2022-11-16 12:29:52,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:29:52,965 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-16 12:29:52,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:29:52,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-16 12:29:52,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2022-11-16 12:29:52,966 INFO L87 Difference]: Start difference. First operand 107 states and 112 transitions. Second operand has 14 states, 12 states have (on average 3.5) internal successors, (42), 12 states have internal predecessors, (42), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-16 12:29:53,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:29:53,778 INFO L93 Difference]: Finished difference Result 126 states and 130 transitions. [2022-11-16 12:29:53,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-16 12:29:53,779 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), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 62 [2022-11-16 12:29:53,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:29:53,780 INFO L225 Difference]: With dead ends: 126 [2022-11-16 12:29:53,780 INFO L226 Difference]: Without dead ends: 126 [2022-11-16 12:29:53,780 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 48 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=80, Invalid=340, Unknown=0, NotChecked=0, Total=420 [2022-11-16 12:29:53,781 INFO L413 NwaCegarLoop]: 54 mSDtfsCounter, 167 mSDsluCounter, 418 mSDsCounter, 0 mSdLazyCounter, 254 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 167 SdHoareTripleChecker+Valid, 472 SdHoareTripleChecker+Invalid, 275 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 254 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 12 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-16 12:29:53,781 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [167 Valid, 472 Invalid, 275 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 254 Invalid, 0 Unknown, 12 Unchecked, 0.6s Time] [2022-11-16 12:29:53,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2022-11-16 12:29:53,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 114. [2022-11-16 12:29:53,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 97 states have (on average 1.175257731958763) internal successors, (114), 105 states have internal predecessors, (114), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-16 12:29:53,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 122 transitions. [2022-11-16 12:29:53,786 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 122 transitions. Word has length 62 [2022-11-16 12:29:53,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:29:53,787 INFO L495 AbstractCegarLoop]: Abstraction has 114 states and 122 transitions. [2022-11-16 12:29:53,787 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), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-16 12:29:53,787 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 122 transitions. [2022-11-16 12:29:53,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-16 12:29:53,788 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:29:53,788 INFO L195 NwaCegarLoop]: trace histogram [16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:29:53,802 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8160929a-9e4c-41f1-afae-433f8348cbbd/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Ended with exit code 0 [2022-11-16 12:29:53,994 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8160929a-9e4c-41f1-afae-433f8348cbbd/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:29:53,994 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ldv_kobject_putErr7ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-11-16 12:29:53,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:29:53,995 INFO L85 PathProgramCache]: Analyzing trace with hash -1507930724, now seen corresponding path program 1 times [2022-11-16 12:29:53,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:29:53,995 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1622167061] [2022-11-16 12:29:53,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:29:53,996 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:29:53,996 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8160929a-9e4c-41f1-afae-433f8348cbbd/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:29:53,997 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8160929a-9e4c-41f1-afae-433f8348cbbd/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:29:53,998 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8160929a-9e4c-41f1-afae-433f8348cbbd/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2022-11-16 12:29:54,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:29:54,457 INFO L263 TraceCheckSpWp]: Trace formula consists of 459 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-16 12:29:54,460 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:29:55,146 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2022-11-16 12:29:55,146 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:29:55,147 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:29:55,147 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1622167061] [2022-11-16 12:29:55,147 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1622167061] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:29:55,147 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:29:55,147 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-16 12:29:55,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494154764] [2022-11-16 12:29:55,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:29:55,147 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-16 12:29:55,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:29:55,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-16 12:29:55,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2022-11-16 12:29:55,148 INFO L87 Difference]: Start difference. First operand 114 states and 122 transitions. Second operand has 14 states, 12 states have (on average 3.75) internal successors, (45), 11 states have internal predecessors, (45), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-16 12:29:55,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:29:55,820 INFO L93 Difference]: Finished difference Result 121 states and 128 transitions. [2022-11-16 12:29:55,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-16 12:29:55,823 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 3.75) internal successors, (45), 11 states have internal predecessors, (45), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 65 [2022-11-16 12:29:55,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:29:55,824 INFO L225 Difference]: With dead ends: 121 [2022-11-16 12:29:55,824 INFO L226 Difference]: Without dead ends: 121 [2022-11-16 12:29:55,825 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 52 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=94, Invalid=286, Unknown=0, NotChecked=0, Total=380 [2022-11-16 12:29:55,825 INFO L413 NwaCegarLoop]: 59 mSDtfsCounter, 208 mSDsluCounter, 373 mSDsCounter, 0 mSdLazyCounter, 191 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 209 SdHoareTripleChecker+Valid, 432 SdHoareTripleChecker+Invalid, 214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 9 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-16 12:29:55,825 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [209 Valid, 432 Invalid, 214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 191 Invalid, 0 Unknown, 9 Unchecked, 0.4s Time] [2022-11-16 12:29:55,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2022-11-16 12:29:55,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 113. [2022-11-16 12:29:55,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 97 states have (on average 1.1546391752577319) internal successors, (112), 104 states have internal predecessors, (112), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-16 12:29:55,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 120 transitions. [2022-11-16 12:29:55,830 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 120 transitions. Word has length 65 [2022-11-16 12:29:55,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:29:55,831 INFO L495 AbstractCegarLoop]: Abstraction has 113 states and 120 transitions. [2022-11-16 12:29:55,831 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 3.75) internal successors, (45), 11 states have internal predecessors, (45), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-16 12:29:55,831 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 120 transitions. [2022-11-16 12:29:55,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-11-16 12:29:55,831 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:29:55,832 INFO L195 NwaCegarLoop]: trace histogram [16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:29:55,857 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8160929a-9e4c-41f1-afae-433f8348cbbd/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2022-11-16 12:29:56,042 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8160929a-9e4c-41f1-afae-433f8348cbbd/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:29:56,043 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ldv_kobject_putErr9ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-11-16 12:29:56,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:29:56,043 INFO L85 PathProgramCache]: Analyzing trace with hash -1701102758, now seen corresponding path program 1 times [2022-11-16 12:29:56,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:29:56,044 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1675864799] [2022-11-16 12:29:56,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:29:56,044 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:29:56,044 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8160929a-9e4c-41f1-afae-433f8348cbbd/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:29:56,046 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8160929a-9e4c-41f1-afae-433f8348cbbd/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:29:56,086 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8160929a-9e4c-41f1-afae-433f8348cbbd/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2022-11-16 12:29:56,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:29:56,622 INFO L263 TraceCheckSpWp]: Trace formula consists of 464 conjuncts, 86 conjunts are in the unsatisfiable core [2022-11-16 12:29:56,628 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:29:56,824 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 38 [2022-11-16 12:29:57,009 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_2050 (_ BitVec 8)) (v_ArrVal_2049 (_ BitVec 8))) (= |c_#memory_int| (store |c_old(#memory_int)| |c_LDV_INIT_LIST_HEAD_#in~list.base| (store (store (select |c_old(#memory_int)| |c_LDV_INIT_LIST_HEAD_#in~list.base|) |c_LDV_INIT_LIST_HEAD_#in~list.offset| v_ArrVal_2049) (bvadd (_ bv4 32) |c_LDV_INIT_LIST_HEAD_#in~list.offset|) v_ArrVal_2050)))) is different from true [2022-11-16 12:29:57,028 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 29 treesize of output 32 [2022-11-16 12:29:57,497 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:29:57,506 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 12:29:57,507 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 70 treesize of output 69 [2022-11-16 12:29:57,872 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 12:29:57,873 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 43 treesize of output 23 [2022-11-16 12:29:58,252 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2022-11-16 12:29:58,253 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:29:58,253 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:29:58,253 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1675864799] [2022-11-16 12:29:58,253 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1675864799] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:29:58,253 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:29:58,254 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2022-11-16 12:29:58,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978119740] [2022-11-16 12:29:58,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:29:58,256 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-11-16 12:29:58,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:29:58,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-11-16 12:29:58,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=641, Unknown=1, NotChecked=50, Total=756 [2022-11-16 12:29:58,257 INFO L87 Difference]: Start difference. First operand 113 states and 120 transitions. Second operand has 28 states, 27 states have (on average 1.7777777777777777) internal successors, (48), 25 states have internal predecessors, (48), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-16 12:29:59,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:29:59,719 INFO L93 Difference]: Finished difference Result 101 states and 103 transitions. [2022-11-16 12:29:59,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-11-16 12:29:59,722 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 1.7777777777777777) internal successors, (48), 25 states have internal predecessors, (48), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 68 [2022-11-16 12:29:59,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:29:59,722 INFO L225 Difference]: With dead ends: 101 [2022-11-16 12:29:59,723 INFO L226 Difference]: Without dead ends: 101 [2022-11-16 12:29:59,723 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 205 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=137, Invalid=1198, Unknown=1, NotChecked=70, Total=1406 [2022-11-16 12:29:59,724 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 41 mSDsluCounter, 1029 mSDsCounter, 0 mSdLazyCounter, 261 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 1081 SdHoareTripleChecker+Invalid, 605 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 341 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-16 12:29:59,724 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 1081 Invalid, 605 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 261 Invalid, 0 Unknown, 341 Unchecked, 0.7s Time] [2022-11-16 12:29:59,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2022-11-16 12:29:59,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 101. [2022-11-16 12:29:59,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 85 states have (on average 1.1176470588235294) internal successors, (95), 92 states have internal predecessors, (95), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-16 12:29:59,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 103 transitions. [2022-11-16 12:29:59,728 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 103 transitions. Word has length 68 [2022-11-16 12:29:59,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:29:59,728 INFO L495 AbstractCegarLoop]: Abstraction has 101 states and 103 transitions. [2022-11-16 12:29:59,728 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 27 states have (on average 1.7777777777777777) internal successors, (48), 25 states have internal predecessors, (48), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-16 12:29:59,728 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 103 transitions. [2022-11-16 12:29:59,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-11-16 12:29:59,729 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:29:59,729 INFO L195 NwaCegarLoop]: trace histogram [16, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:29:59,747 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8160929a-9e4c-41f1-afae-433f8348cbbd/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (28)] Ended with exit code 0 [2022-11-16 12:29:59,946 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8160929a-9e4c-41f1-afae-433f8348cbbd/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:29:59,947 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ldv_kobject_putErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-11-16 12:29:59,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:29:59,947 INFO L85 PathProgramCache]: Analyzing trace with hash -756328715, now seen corresponding path program 1 times [2022-11-16 12:29:59,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:29:59,947 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1270446862] [2022-11-16 12:29:59,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:29:59,948 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:29:59,948 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8160929a-9e4c-41f1-afae-433f8348cbbd/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:29:59,949 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8160929a-9e4c-41f1-afae-433f8348cbbd/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:29:59,950 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8160929a-9e4c-41f1-afae-433f8348cbbd/bin/uautomizer-tPACEb0tL8/mathsat -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 [2022-11-16 12:30:00,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:30:00,352 INFO L263 TraceCheckSpWp]: Trace formula consists of 475 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-16 12:30:00,354 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:30:00,361 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-16 12:30:00,651 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2022-11-16 12:30:00,652 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:30:00,939 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2022-11-16 12:30:00,939 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:30:00,939 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1270446862] [2022-11-16 12:30:00,939 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1270446862] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:30:00,940 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:30:00,940 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 12 [2022-11-16 12:30:00,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737695525] [2022-11-16 12:30:00,940 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 12:30:00,941 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-16 12:30:00,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:30:00,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-16 12:30:00,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2022-11-16 12:30:00,942 INFO L87 Difference]: Start difference. First operand 101 states and 103 transitions. Second operand has 13 states, 12 states have (on average 5.25) internal successors, (63), 11 states have internal predecessors, (63), 3 states have call successors, (6), 5 states have call predecessors, (6), 5 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2022-11-16 12:30:01,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:30:01,503 INFO L93 Difference]: Finished difference Result 107 states and 108 transitions. [2022-11-16 12:30:01,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-16 12:30:01,503 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 5.25) internal successors, (63), 11 states have internal predecessors, (63), 3 states have call successors, (6), 5 states have call predecessors, (6), 5 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Word has length 70 [2022-11-16 12:30:01,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:30:01,504 INFO L225 Difference]: With dead ends: 107 [2022-11-16 12:30:01,504 INFO L226 Difference]: Without dead ends: 107 [2022-11-16 12:30:01,505 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 126 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=76, Invalid=266, Unknown=0, NotChecked=0, Total=342 [2022-11-16 12:30:01,505 INFO L413 NwaCegarLoop]: 58 mSDtfsCounter, 108 mSDsluCounter, 304 mSDsCounter, 0 mSdLazyCounter, 205 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 362 SdHoareTripleChecker+Invalid, 252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 205 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 39 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-16 12:30:01,506 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [108 Valid, 362 Invalid, 252 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 205 Invalid, 0 Unknown, 39 Unchecked, 0.5s Time] [2022-11-16 12:30:01,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2022-11-16 12:30:01,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 100. [2022-11-16 12:30:01,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 85 states have (on average 1.1058823529411765) internal successors, (94), 91 states have internal predecessors, (94), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-16 12:30:01,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 102 transitions. [2022-11-16 12:30:01,510 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 102 transitions. Word has length 70 [2022-11-16 12:30:01,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:30:01,510 INFO L495 AbstractCegarLoop]: Abstraction has 100 states and 102 transitions. [2022-11-16 12:30:01,510 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 5.25) internal successors, (63), 11 states have internal predecessors, (63), 3 states have call successors, (6), 5 states have call predecessors, (6), 5 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2022-11-16 12:30:01,510 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 102 transitions. [2022-11-16 12:30:01,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-11-16 12:30:01,511 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:30:01,511 INFO L195 NwaCegarLoop]: trace histogram [16, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:30:01,525 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8160929a-9e4c-41f1-afae-433f8348cbbd/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (29)] Ended with exit code 0 [2022-11-16 12:30:01,717 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8160929a-9e4c-41f1-afae-433f8348cbbd/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:30:01,718 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ldv_kobject_putErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-11-16 12:30:01,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:30:01,718 INFO L85 PathProgramCache]: Analyzing trace with hash 681881017, now seen corresponding path program 1 times [2022-11-16 12:30:01,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:30:01,719 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1401743872] [2022-11-16 12:30:01,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:30:01,719 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:30:01,719 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8160929a-9e4c-41f1-afae-433f8348cbbd/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:30:01,720 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8160929a-9e4c-41f1-afae-433f8348cbbd/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:30:01,721 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8160929a-9e4c-41f1-afae-433f8348cbbd/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2022-11-16 12:30:02,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:30:02,225 INFO L263 TraceCheckSpWp]: Trace formula consists of 524 conjuncts, 26 conjunts are in the unsatisfiable core [2022-11-16 12:30:02,228 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:30:02,232 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-16 12:30:02,504 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2022-11-16 12:30:02,504 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:30:02,781 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2022-11-16 12:30:02,782 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:30:02,782 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1401743872] [2022-11-16 12:30:02,782 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1401743872] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:30:02,782 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:30:02,783 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11] total 13 [2022-11-16 12:30:02,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317242141] [2022-11-16 12:30:02,783 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 12:30:02,783 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-16 12:30:02,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:30:02,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-16 12:30:02,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2022-11-16 12:30:02,784 INFO L87 Difference]: Start difference. First operand 100 states and 102 transitions. Second operand has 14 states, 13 states have (on average 5.3076923076923075) internal successors, (69), 12 states have internal predecessors, (69), 3 states have call successors, (6), 5 states have call predecessors, (6), 5 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2022-11-16 12:30:03,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:30:03,452 INFO L93 Difference]: Finished difference Result 106 states and 107 transitions. [2022-11-16 12:30:03,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-16 12:30:03,453 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 5.3076923076923075) internal successors, (69), 12 states have internal predecessors, (69), 3 states have call successors, (6), 5 states have call predecessors, (6), 5 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Word has length 76 [2022-11-16 12:30:03,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:30:03,454 INFO L225 Difference]: With dead ends: 106 [2022-11-16 12:30:03,454 INFO L226 Difference]: Without dead ends: 106 [2022-11-16 12:30:03,454 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 137 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=68, Invalid=274, Unknown=0, NotChecked=0, Total=342 [2022-11-16 12:30:03,455 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 92 mSDsluCounter, 384 mSDsCounter, 0 mSdLazyCounter, 258 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 441 SdHoareTripleChecker+Invalid, 311 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 258 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 50 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-16 12:30:03,455 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 441 Invalid, 311 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 258 Invalid, 0 Unknown, 50 Unchecked, 0.5s Time] [2022-11-16 12:30:03,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2022-11-16 12:30:03,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 99. [2022-11-16 12:30:03,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 85 states have (on average 1.0941176470588236) internal successors, (93), 90 states have internal predecessors, (93), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-16 12:30:03,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 101 transitions. [2022-11-16 12:30:03,459 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 101 transitions. Word has length 76 [2022-11-16 12:30:03,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:30:03,460 INFO L495 AbstractCegarLoop]: Abstraction has 99 states and 101 transitions. [2022-11-16 12:30:03,460 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 5.3076923076923075) internal successors, (69), 12 states have internal predecessors, (69), 3 states have call successors, (6), 5 states have call predecessors, (6), 5 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2022-11-16 12:30:03,460 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 101 transitions. [2022-11-16 12:30:03,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-11-16 12:30:03,461 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:30:03,461 INFO L195 NwaCegarLoop]: trace histogram [16, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:30:03,481 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8160929a-9e4c-41f1-afae-433f8348cbbd/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (30)] Ended with exit code 0 [2022-11-16 12:30:03,679 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8160929a-9e4c-41f1-afae-433f8348cbbd/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:30:03,679 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ldv_kobject_putErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-11-16 12:30:03,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:30:03,679 INFO L85 PathProgramCache]: Analyzing trace with hash 681881018, now seen corresponding path program 1 times [2022-11-16 12:30:03,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:30:03,680 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [163961212] [2022-11-16 12:30:03,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:30:03,680 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:30:03,680 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8160929a-9e4c-41f1-afae-433f8348cbbd/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:30:03,681 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8160929a-9e4c-41f1-afae-433f8348cbbd/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:30:03,682 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8160929a-9e4c-41f1-afae-433f8348cbbd/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2022-11-16 12:30:04,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:30:04,239 INFO L263 TraceCheckSpWp]: Trace formula consists of 524 conjuncts, 43 conjunts are in the unsatisfiable core [2022-11-16 12:30:04,242 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:30:04,260 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-16 12:30:04,844 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2022-11-16 12:30:04,844 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:30:04,844 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:30:04,844 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [163961212] [2022-11-16 12:30:04,844 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [163961212] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:30:04,844 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:30:04,844 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-16 12:30:04,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388630087] [2022-11-16 12:30:04,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:30:04,845 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-16 12:30:04,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:30:04,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-16 12:30:04,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2022-11-16 12:30:04,846 INFO L87 Difference]: Start difference. First operand 99 states and 101 transitions. Second operand has 13 states, 12 states have (on average 4.5) internal successors, (54), 11 states have internal predecessors, (54), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 12:30:05,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:30:05,405 INFO L93 Difference]: Finished difference Result 101 states and 103 transitions. [2022-11-16 12:30:05,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-16 12:30:05,406 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 4.5) internal successors, (54), 11 states have internal predecessors, (54), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 76 [2022-11-16 12:30:05,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:30:05,407 INFO L225 Difference]: With dead ends: 101 [2022-11-16 12:30:05,408 INFO L226 Difference]: Without dead ends: 101 [2022-11-16 12:30:05,408 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 61 SyntacticMatches, 3 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=64, Invalid=278, Unknown=0, NotChecked=0, Total=342 [2022-11-16 12:30:05,409 INFO L413 NwaCegarLoop]: 58 mSDtfsCounter, 93 mSDsluCounter, 454 mSDsCounter, 0 mSdLazyCounter, 216 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 512 SdHoareTripleChecker+Invalid, 233 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 216 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 16 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-16 12:30:05,409 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [93 Valid, 512 Invalid, 233 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 216 Invalid, 0 Unknown, 16 Unchecked, 0.4s Time] [2022-11-16 12:30:05,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2022-11-16 12:30:05,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 97. [2022-11-16 12:30:05,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 85 states have (on average 1.0705882352941176) internal successors, (91), 88 states have internal predecessors, (91), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-16 12:30:05,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 99 transitions. [2022-11-16 12:30:05,413 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 99 transitions. Word has length 76 [2022-11-16 12:30:05,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:30:05,414 INFO L495 AbstractCegarLoop]: Abstraction has 97 states and 99 transitions. [2022-11-16 12:30:05,414 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 4.5) internal successors, (54), 11 states have internal predecessors, (54), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 12:30:05,414 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 99 transitions. [2022-11-16 12:30:05,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-11-16 12:30:05,415 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:30:05,415 INFO L195 NwaCegarLoop]: trace histogram [16, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:30:05,429 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8160929a-9e4c-41f1-afae-433f8348cbbd/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (31)] Ended with exit code 0 [2022-11-16 12:30:05,615 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8160929a-9e4c-41f1-afae-433f8348cbbd/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:30:05,616 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-11-16 12:30:05,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:30:05,616 INFO L85 PathProgramCache]: Analyzing trace with hash 1200120414, now seen corresponding path program 1 times [2022-11-16 12:30:05,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:30:05,617 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1681110524] [2022-11-16 12:30:05,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:30:05,617 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:30:05,617 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8160929a-9e4c-41f1-afae-433f8348cbbd/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:30:05,618 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8160929a-9e4c-41f1-afae-433f8348cbbd/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:30:05,633 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8160929a-9e4c-41f1-afae-433f8348cbbd/bin/uautomizer-tPACEb0tL8/mathsat -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 [2022-11-16 12:30:06,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:30:06,200 INFO L263 TraceCheckSpWp]: Trace formula consists of 512 conjuncts, 122 conjunts are in the unsatisfiable core [2022-11-16 12:30:06,206 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:30:06,379 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:30:06,381 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:30:06,382 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:30:06,383 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:30:06,383 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:30:06,385 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 41 [2022-11-16 12:30:06,616 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_2734 (_ BitVec 8)) (v_ArrVal_2733 (_ BitVec 8))) (= |c_#memory_int| (store |c_old(#memory_int)| |c_LDV_INIT_LIST_HEAD_#in~list.base| (store (store (select |c_old(#memory_int)| |c_LDV_INIT_LIST_HEAD_#in~list.base|) |c_LDV_INIT_LIST_HEAD_#in~list.offset| v_ArrVal_2733) (bvadd (_ bv4 32) |c_LDV_INIT_LIST_HEAD_#in~list.offset|) v_ArrVal_2734)))) is different from true [2022-11-16 12:30:06,642 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 12:30:06,643 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 15 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 59 treesize of output 71 [2022-11-16 12:30:07,281 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:30:07,283 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:30:07,284 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:30:07,285 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:30:07,287 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:30:07,288 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:30:07,289 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:30:07,290 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:30:07,292 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:30:07,292 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:30:07,306 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 12:30:07,306 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 10 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 193 treesize of output 165 [2022-11-16 12:30:08,439 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 12:30:08,439 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 249 treesize of output 137 [2022-11-16 12:30:13,362 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 139 trivial. 0 not checked. [2022-11-16 12:30:13,362 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:31:02,164 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:31:02,165 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1681110524] [2022-11-16 12:31:02,165 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1681110524] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:31:02,165 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [66113806] [2022-11-16 12:31:02,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:31:02,165 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-16 12:31:02,166 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8160929a-9e4c-41f1-afae-433f8348cbbd/bin/uautomizer-tPACEb0tL8/cvc4 [2022-11-16 12:31:02,168 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8160929a-9e4c-41f1-afae-433f8348cbbd/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-16 12:31:02,169 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8160929a-9e4c-41f1-afae-433f8348cbbd/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt (33)] Waiting until timeout for monitored process [2022-11-16 12:31:04,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:31:04,794 INFO L263 TraceCheckSpWp]: Trace formula consists of 512 conjuncts, 139 conjunts are in the unsatisfiable core [2022-11-16 12:31:04,803 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:31:09,792 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:31:09,794 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:31:09,795 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:31:09,796 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:31:09,796 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:31:09,798 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 41 [2022-11-16 12:31:09,930 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_2733 (_ BitVec 8)) (v_ArrVal_2937 (_ BitVec 8))) (= (store |c_old(#memory_int)| |c_LDV_INIT_LIST_HEAD_#in~list.base| (store (store (select |c_old(#memory_int)| |c_LDV_INIT_LIST_HEAD_#in~list.base|) |c_LDV_INIT_LIST_HEAD_#in~list.offset| v_ArrVal_2733) (bvadd (_ bv4 32) |c_LDV_INIT_LIST_HEAD_#in~list.offset|) v_ArrVal_2937)) |c_#memory_int|)) is different from true [2022-11-16 12:31:09,954 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 12:31:09,954 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 15 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 59 treesize of output 71 [2022-11-16 12:31:10,200 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:31:10,201 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:31:10,202 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:31:10,203 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:31:10,204 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:31:10,205 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:31:10,206 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:31:10,208 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:31:10,209 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:31:10,210 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:31:10,224 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 12:31:10,225 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 10 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 193 treesize of output 165 [2022-11-16 12:31:10,593 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 12:31:10,593 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 249 treesize of output 137 [2022-11-16 12:31:10,790 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 0 proven. 135 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-16 12:31:10,790 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:31:16,364 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [66113806] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:31:16,364 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:31:16,364 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 44] total 45 [2022-11-16 12:31:16,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974864852] [2022-11-16 12:31:16,365 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 12:31:16,365 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2022-11-16 12:31:16,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:31:16,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2022-11-16 12:31:16,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=4076, Unknown=12, NotChecked=258, Total=4556 [2022-11-16 12:31:16,368 INFO L87 Difference]: Start difference. First operand 97 states and 99 transitions. Second operand has 45 states, 44 states have (on average 1.6136363636363635) internal successors, (71), 43 states have internal predecessors, (71), 4 states have call successors, (4), 2 states have call predecessors, (4), 5 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2022-11-16 12:31:20,326 WARN L855 $PredicateComparison]: unable to prove that (let ((.cse0 (select |c_old(#memory_int)| |c_LDV_INIT_LIST_HEAD_#in~list.base|)) (.cse1 (bvadd (_ bv4 32) |c_LDV_INIT_LIST_HEAD_#in~list.offset|))) (and (exists ((v_ArrVal_2733 (_ BitVec 8)) (v_ArrVal_2937 (_ BitVec 8))) (= (store |c_old(#memory_int)| |c_LDV_INIT_LIST_HEAD_#in~list.base| (store (store .cse0 |c_LDV_INIT_LIST_HEAD_#in~list.offset| v_ArrVal_2733) .cse1 v_ArrVal_2937)) |c_#memory_int|)) (exists ((v_ArrVal_2734 (_ BitVec 8)) (v_ArrVal_2733 (_ BitVec 8))) (= |c_#memory_int| (store |c_old(#memory_int)| |c_LDV_INIT_LIST_HEAD_#in~list.base| (store (store .cse0 |c_LDV_INIT_LIST_HEAD_#in~list.offset| v_ArrVal_2733) .cse1 v_ArrVal_2734)))))) is different from true [2022-11-16 12:32:11,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:32:11,942 INFO L93 Difference]: Finished difference Result 101 states and 102 transitions. [2022-11-16 12:32:11,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-11-16 12:32:11,943 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 44 states have (on average 1.6136363636363635) internal successors, (71), 43 states have internal predecessors, (71), 4 states have call successors, (4), 2 states have call predecessors, (4), 5 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) Word has length 81 [2022-11-16 12:32:11,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:32:11,944 INFO L225 Difference]: With dead ends: 101 [2022-11-16 12:32:11,945 INFO L226 Difference]: Without dead ends: 97 [2022-11-16 12:32:11,947 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 273 GetRequests, 177 SyntacticMatches, 3 SemanticMatches, 93 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 2027 ImplicationChecksByTransitivity, 110.7s TimeCoverageRelationStatistics Valid=538, Invalid=7822, Unknown=24, NotChecked=546, Total=8930 [2022-11-16 12:32:11,947 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 131 mSDsluCounter, 1158 mSDsCounter, 0 mSdLazyCounter, 1532 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 1199 SdHoareTripleChecker+Invalid, 1805 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 1532 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 267 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2022-11-16 12:32:11,948 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [131 Valid, 1199 Invalid, 1805 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 1532 Invalid, 0 Unknown, 267 Unchecked, 5.0s Time] [2022-11-16 12:32:11,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2022-11-16 12:32:11,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2022-11-16 12:32:11,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 85 states have (on average 1.0588235294117647) internal successors, (90), 88 states have internal predecessors, (90), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-16 12:32:11,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 98 transitions. [2022-11-16 12:32:11,952 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 98 transitions. Word has length 81 [2022-11-16 12:32:11,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:32:11,952 INFO L495 AbstractCegarLoop]: Abstraction has 97 states and 98 transitions. [2022-11-16 12:32:11,953 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 44 states have (on average 1.6136363636363635) internal successors, (71), 43 states have internal predecessors, (71), 4 states have call successors, (4), 2 states have call predecessors, (4), 5 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2022-11-16 12:32:11,953 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 98 transitions. [2022-11-16 12:32:11,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-11-16 12:32:11,954 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:32:11,954 INFO L195 NwaCegarLoop]: trace histogram [16, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:32:11,968 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8160929a-9e4c-41f1-afae-433f8348cbbd/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt (33)] Forceful destruction successful, exit code 0 [2022-11-16 12:32:12,177 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8160929a-9e4c-41f1-afae-433f8348cbbd/bin/uautomizer-tPACEb0tL8/mathsat -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)] Ended with exit code 0 [2022-11-16 12:32:12,362 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8160929a-9e4c-41f1-afae-433f8348cbbd/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt,32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8160929a-9e4c-41f1-afae-433f8348cbbd/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:32:12,362 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ldv_kobject_putErr9ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-11-16 12:32:12,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:32:12,363 INFO L85 PathProgramCache]: Analyzing trace with hash 2126857693, now seen corresponding path program 1 times [2022-11-16 12:32:12,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:32:12,363 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [283820320] [2022-11-16 12:32:12,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:32:12,363 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:32:12,363 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8160929a-9e4c-41f1-afae-433f8348cbbd/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:32:12,365 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8160929a-9e4c-41f1-afae-433f8348cbbd/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:32:12,367 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8160929a-9e4c-41f1-afae-433f8348cbbd/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (34)] Waiting until timeout for monitored process [2022-11-16 12:32:13,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:32:13,149 INFO L263 TraceCheckSpWp]: Trace formula consists of 538 conjuncts, 164 conjunts are in the unsatisfiable core [2022-11-16 12:32:13,166 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:32:13,313 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-16 12:32:13,374 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:32:13,378 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-16 12:32:13,444 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:32:13,445 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 21 [2022-11-16 12:32:13,510 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:32:13,511 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 21 [2022-11-16 12:32:13,581 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:32:13,582 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 21 [2022-11-16 12:32:13,663 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:32:13,664 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-16 12:32:13,737 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:32:13,738 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 21 [2022-11-16 12:32:13,802 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:32:13,803 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-16 12:32:13,885 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:32:13,885 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-16 12:32:13,960 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:32:13,961 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-16 12:32:14,036 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:32:14,037 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 21 [2022-11-16 12:32:14,118 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:32:14,119 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-16 12:32:14,194 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:32:14,195 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-16 12:32:14,272 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:32:14,273 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 21 [2022-11-16 12:32:14,349 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:32:14,350 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 21 [2022-11-16 12:32:14,435 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:32:14,435 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-16 12:32:14,847 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 47 [2022-11-16 12:32:15,084 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_3169 (_ BitVec 32)) (v_ArrVal_3172 (_ BitVec 32))) (= (store |c_old(#memory_$Pointer$.offset)| |c_LDV_INIT_LIST_HEAD_#in~list.base| (store (store (select |c_old(#memory_$Pointer$.offset)| |c_LDV_INIT_LIST_HEAD_#in~list.base|) |c_LDV_INIT_LIST_HEAD_#in~list.offset| v_ArrVal_3169) (bvadd (_ bv4 32) |c_LDV_INIT_LIST_HEAD_#in~list.offset|) v_ArrVal_3172)) |c_#memory_$Pointer$.offset|)) is different from true [2022-11-16 12:32:15,097 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:32:15,098 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:32:15,099 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 26 treesize of output 29 [2022-11-16 12:32:15,385 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:32:15,386 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:32:15,387 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:32:15,388 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:32:15,390 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 47 [2022-11-16 12:32:15,866 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_3179 (_ BitVec 32)) (v_ArrVal_3178 (_ BitVec 32)) (v_ArrVal_3180 (_ BitVec 32)) (v_ArrVal_3181 (_ BitVec 32))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_ldv_kobject_put_#in~kobj#1.base| (store (store (store (store (select |c_old(#memory_$Pointer$.offset)| |c_ldv_kobject_put_#in~kobj#1.base|) (bvadd |c_ldv_kobject_put_#in~kobj#1.offset| (_ bv12 32)) v_ArrVal_3180) (bvadd |c_ldv_kobject_put_#in~kobj#1.offset| (_ bv13 32)) v_ArrVal_3181) (bvadd (_ bv14 32) |c_ldv_kobject_put_#in~kobj#1.offset|) v_ArrVal_3178) (bvadd |c_ldv_kobject_put_#in~kobj#1.offset| (_ bv15 32)) v_ArrVal_3179)))) is different from true [2022-11-16 12:32:15,947 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:32:15,949 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:32:15,950 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:32:15,952 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:32:15,953 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 47 [2022-11-16 12:32:16,270 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:32:16,272 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:32:16,273 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:32:16,275 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:32:16,276 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:32:16,279 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:32:16,280 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 45 [2022-11-16 12:32:16,446 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-16 12:32:16,571 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 141 refuted. 0 times theorem prover too weak. 0 trivial. 3 not checked. [2022-11-16 12:32:16,571 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:32:18,807 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:32:18,807 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [283820320] [2022-11-16 12:32:18,808 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [283820320] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:32:18,808 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1386769752] [2022-11-16 12:32:18,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:32:18,808 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-16 12:32:18,808 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8160929a-9e4c-41f1-afae-433f8348cbbd/bin/uautomizer-tPACEb0tL8/cvc4 [2022-11-16 12:32:18,809 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8160929a-9e4c-41f1-afae-433f8348cbbd/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-16 12:32:18,811 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8160929a-9e4c-41f1-afae-433f8348cbbd/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt (35)] Waiting until timeout for monitored process [2022-11-16 12:32:19,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:32:19,987 INFO L263 TraceCheckSpWp]: Trace formula consists of 538 conjuncts, 161 conjunts are in the unsatisfiable core [2022-11-16 12:32:20,003 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:32:20,074 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-16 12:32:20,097 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:32:20,099 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-16 12:32:20,135 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:32:20,136 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 21 [2022-11-16 12:32:20,154 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:32:20,157 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-16 12:32:20,186 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:32:20,187 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-16 12:32:20,209 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:32:20,210 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 21 [2022-11-16 12:32:20,238 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:32:20,239 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-16 12:32:20,274 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:32:20,275 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 21 [2022-11-16 12:32:20,325 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:32:20,326 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 21 [2022-11-16 12:32:20,354 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:32:20,355 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 21 [2022-11-16 12:32:20,378 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:32:20,379 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 21 [2022-11-16 12:32:20,400 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:32:20,401 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-16 12:32:20,438 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:32:20,439 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 21 [2022-11-16 12:32:20,461 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:32:20,462 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-16 12:32:20,487 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:32:20,488 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-16 12:32:20,513 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:32:20,514 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-16 12:32:20,598 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 47 [2022-11-16 12:32:20,802 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_3411 (_ BitVec 32))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_LDV_INIT_LIST_HEAD_#in~list.base| (store (store (select |c_old(#memory_$Pointer$.offset)| |c_LDV_INIT_LIST_HEAD_#in~list.base|) |c_LDV_INIT_LIST_HEAD_#in~list.offset| |c_LDV_INIT_LIST_HEAD_#in~list.offset|) (bvadd (_ bv4 32) |c_LDV_INIT_LIST_HEAD_#in~list.offset|) v_ArrVal_3411)))) is different from true [2022-11-16 12:32:20,819 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:32:20,821 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:32:20,822 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 28 treesize of output 31 [2022-11-16 12:32:21,444 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:32:21,445 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:32:21,446 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:32:21,447 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:32:21,448 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:32:21,449 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:32:21,450 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:32:21,451 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:32:21,455 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 12:32:21,455 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 15 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 43 treesize of output 57 [2022-11-16 12:32:21,909 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_3421 (_ BitVec 32)) (v_ArrVal_3420 (_ BitVec 32)) (v_ArrVal_3418 (_ BitVec 32)) (v_ArrVal_3419 (_ BitVec 32))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_ldv_kobject_put_#in~kobj#1.base| (store (store (store (store (select |c_old(#memory_$Pointer$.offset)| |c_ldv_kobject_put_#in~kobj#1.base|) (bvadd |c_ldv_kobject_put_#in~kobj#1.offset| (_ bv12 32)) v_ArrVal_3420) (bvadd |c_ldv_kobject_put_#in~kobj#1.offset| (_ bv13 32)) v_ArrVal_3421) (bvadd (_ bv14 32) |c_ldv_kobject_put_#in~kobj#1.offset|) v_ArrVal_3418) (bvadd |c_ldv_kobject_put_#in~kobj#1.offset| (_ bv15 32)) v_ArrVal_3419)))) is different from true [2022-11-16 12:32:21,999 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:32:22,000 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:32:22,001 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:32:22,003 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:32:22,004 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:32:22,005 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:32:22,007 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:32:22,008 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:32:22,012 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 12:32:22,013 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 15 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 43 treesize of output 57 [2022-11-16 12:32:22,445 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 12:32:22,445 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 15 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 49 [2022-11-16 12:32:22,711 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 12:32:22,711 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 22 treesize of output 26 [2022-11-16 12:32:22,976 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 141 refuted. 0 times theorem prover too weak. 0 trivial. 3 not checked. [2022-11-16 12:32:22,977 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:32:26,996 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1386769752] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:32:26,996 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:32:26,996 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 46] total 60 [2022-11-16 12:32:26,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159127300] [2022-11-16 12:32:26,997 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 12:32:26,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2022-11-16 12:32:26,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:32:26,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2022-11-16 12:32:27,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=265, Invalid=5003, Unknown=4, NotChecked=580, Total=5852 [2022-11-16 12:32:27,001 INFO L87 Difference]: Start difference. First operand 97 states and 98 transitions. Second operand has 61 states, 58 states have (on average 1.896551724137931) internal successors, (110), 57 states have internal predecessors, (110), 6 states have call successors, (6), 4 states have call predecessors, (6), 5 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2022-11-16 12:32:32,958 WARN L855 $PredicateComparison]: unable to prove that (let ((.cse0 (select |c_old(#memory_$Pointer$.offset)| |c_LDV_INIT_LIST_HEAD_#in~list.base|)) (.cse1 (bvadd (_ bv4 32) |c_LDV_INIT_LIST_HEAD_#in~list.offset|))) (and (exists ((v_ArrVal_3169 (_ BitVec 32)) (v_ArrVal_3172 (_ BitVec 32))) (= (store |c_old(#memory_$Pointer$.offset)| |c_LDV_INIT_LIST_HEAD_#in~list.base| (store (store .cse0 |c_LDV_INIT_LIST_HEAD_#in~list.offset| v_ArrVal_3169) .cse1 v_ArrVal_3172)) |c_#memory_$Pointer$.offset|)) (exists ((v_ArrVal_3411 (_ BitVec 32))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_LDV_INIT_LIST_HEAD_#in~list.base| (store (store .cse0 |c_LDV_INIT_LIST_HEAD_#in~list.offset| |c_LDV_INIT_LIST_HEAD_#in~list.offset|) .cse1 v_ArrVal_3411)))))) is different from true [2022-11-16 12:32:40,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:32:40,143 INFO L93 Difference]: Finished difference Result 96 states and 97 transitions. [2022-11-16 12:32:40,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-11-16 12:32:40,146 INFO L78 Accepts]: Start accepts. Automaton has has 61 states, 58 states have (on average 1.896551724137931) internal successors, (110), 57 states have internal predecessors, (110), 6 states have call successors, (6), 4 states have call predecessors, (6), 5 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) Word has length 82 [2022-11-16 12:32:40,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:32:40,146 INFO L225 Difference]: With dead ends: 96 [2022-11-16 12:32:40,146 INFO L226 Difference]: Without dead ends: 96 [2022-11-16 12:32:40,150 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 108 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 2908 ImplicationChecksByTransitivity, 15.4s TimeCoverageRelationStatistics Valid=639, Invalid=10291, Unknown=10, NotChecked=1050, Total=11990 [2022-11-16 12:32:40,151 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 321 mSDsluCounter, 826 mSDsCounter, 0 mSdLazyCounter, 1535 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 321 SdHoareTripleChecker+Valid, 866 SdHoareTripleChecker+Invalid, 2005 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 1535 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 428 IncrementalHoareTripleChecker+Unchecked, 6.5s IncrementalHoareTripleChecker+Time [2022-11-16 12:32:40,151 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [321 Valid, 866 Invalid, 2005 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 1535 Invalid, 0 Unknown, 428 Unchecked, 6.5s Time] [2022-11-16 12:32:40,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2022-11-16 12:32:40,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 96. [2022-11-16 12:32:40,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 85 states have (on average 1.0470588235294118) internal successors, (89), 87 states have internal predecessors, (89), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-16 12:32:40,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 97 transitions. [2022-11-16 12:32:40,155 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 97 transitions. Word has length 82 [2022-11-16 12:32:40,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:32:40,156 INFO L495 AbstractCegarLoop]: Abstraction has 96 states and 97 transitions. [2022-11-16 12:32:40,156 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 58 states have (on average 1.896551724137931) internal successors, (110), 57 states have internal predecessors, (110), 6 states have call successors, (6), 4 states have call predecessors, (6), 5 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2022-11-16 12:32:40,156 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 97 transitions. [2022-11-16 12:32:40,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-11-16 12:32:40,157 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:32:40,157 INFO L195 NwaCegarLoop]: trace histogram [16, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:32:40,174 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8160929a-9e4c-41f1-afae-433f8348cbbd/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (34)] Forceful destruction successful, exit code 0 [2022-11-16 12:32:40,372 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8160929a-9e4c-41f1-afae-433f8348cbbd/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt (35)] Ended with exit code 0 [2022-11-16 12:32:40,566 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8160929a-9e4c-41f1-afae-433f8348cbbd/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8160929a-9e4c-41f1-afae-433f8348cbbd/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt [2022-11-16 12:32:40,566 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ldv_kobject_putErr10ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-11-16 12:32:40,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:32:40,566 INFO L85 PathProgramCache]: Analyzing trace with hash 1508079198, now seen corresponding path program 1 times [2022-11-16 12:32:40,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:32:40,567 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [98111011] [2022-11-16 12:32:40,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:32:40,567 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:32:40,567 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8160929a-9e4c-41f1-afae-433f8348cbbd/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:32:40,569 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8160929a-9e4c-41f1-afae-433f8348cbbd/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:32:40,571 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8160929a-9e4c-41f1-afae-433f8348cbbd/bin/uautomizer-tPACEb0tL8/mathsat -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 [2022-11-16 12:32:41,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:32:41,294 INFO L263 TraceCheckSpWp]: Trace formula consists of 539 conjuncts, 164 conjunts are in the unsatisfiable core [2022-11-16 12:32:41,306 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:32:41,449 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-16 12:32:41,517 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:32:41,518 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 21 [2022-11-16 12:32:41,591 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:32:41,592 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-16 12:32:41,669 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:32:41,670 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 21 [2022-11-16 12:32:41,764 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:32:41,765 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-16 12:32:41,858 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:32:41,859 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 21 [2022-11-16 12:32:41,950 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:32:41,951 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-16 12:32:42,043 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:32:42,044 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 21 [2022-11-16 12:32:42,155 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:32:42,156 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-16 12:32:42,238 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:32:42,242 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 21 [2022-11-16 12:32:42,348 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:32:42,349 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-16 12:32:42,460 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:32:42,461 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-16 12:32:42,589 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:32:42,590 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-16 12:32:42,707 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:32:42,708 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-16 12:32:42,832 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:32:42,833 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-16 12:32:42,965 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:32:42,966 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-16 12:32:43,332 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 47 [2022-11-16 12:32:43,629 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_3650 (_ BitVec 32)) (v_ArrVal_3651 (_ BitVec 32))) (= (store |c_old(#memory_$Pointer$.base)| |c_LDV_INIT_LIST_HEAD_#in~list.base| (store (store (select |c_old(#memory_$Pointer$.base)| |c_LDV_INIT_LIST_HEAD_#in~list.base|) |c_LDV_INIT_LIST_HEAD_#in~list.offset| v_ArrVal_3650) (bvadd (_ bv4 32) |c_LDV_INIT_LIST_HEAD_#in~list.offset|) v_ArrVal_3651)) |c_#memory_$Pointer$.base|)) is different from true [2022-11-16 12:32:43,646 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:32:43,648 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:32:43,648 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 26 treesize of output 29 [2022-11-16 12:32:44,037 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:32:44,039 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:32:44,041 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:32:44,043 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:32:44,045 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 47 [2022-11-16 12:32:44,667 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_3661 (_ BitVec 32)) (v_ArrVal_3662 (_ BitVec 32)) (v_ArrVal_3658 (_ BitVec 32)) (v_ArrVal_3659 (_ BitVec 32))) (= (store |c_old(#memory_$Pointer$.base)| |c_ldv_kobject_put_#in~kobj#1.base| (store (store (store (store (select |c_old(#memory_$Pointer$.base)| |c_ldv_kobject_put_#in~kobj#1.base|) (bvadd |c_ldv_kobject_put_#in~kobj#1.offset| (_ bv12 32)) v_ArrVal_3658) (bvadd |c_ldv_kobject_put_#in~kobj#1.offset| (_ bv13 32)) v_ArrVal_3659) (bvadd (_ bv14 32) |c_ldv_kobject_put_#in~kobj#1.offset|) v_ArrVal_3661) (bvadd |c_ldv_kobject_put_#in~kobj#1.offset| (_ bv15 32)) v_ArrVal_3662)) |c_#memory_$Pointer$.base|)) is different from true [2022-11-16 12:32:44,749 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:32:44,751 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:32:44,752 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:32:44,753 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:32:44,754 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 47 [2022-11-16 12:32:45,131 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:32:45,132 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:32:45,134 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:32:45,136 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:32:45,138 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:32:45,140 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:32:45,141 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 45 [2022-11-16 12:32:45,397 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-16 12:32:45,702 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 141 refuted. 0 times theorem prover too weak. 0 trivial. 3 not checked. [2022-11-16 12:32:45,702 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:32:48,159 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:32:48,159 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [98111011] [2022-11-16 12:32:48,159 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [98111011] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:32:48,159 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1867746038] [2022-11-16 12:32:48,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:32:48,159 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-16 12:32:48,160 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8160929a-9e4c-41f1-afae-433f8348cbbd/bin/uautomizer-tPACEb0tL8/cvc4 [2022-11-16 12:32:48,161 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8160929a-9e4c-41f1-afae-433f8348cbbd/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-16 12:32:48,163 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8160929a-9e4c-41f1-afae-433f8348cbbd/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt (37)] Waiting until timeout for monitored process [2022-11-16 12:32:49,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:32:49,540 INFO L263 TraceCheckSpWp]: Trace formula consists of 539 conjuncts, 160 conjunts are in the unsatisfiable core [2022-11-16 12:32:49,552 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:32:49,649 INFO L350 Elim1Store]: Elim1 eliminated variable 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 14 treesize of output 10 [2022-11-16 12:32:49,695 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:32:49,696 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 21 [2022-11-16 12:32:49,734 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:32:49,735 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 21 [2022-11-16 12:32:49,772 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:32:49,773 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 21 [2022-11-16 12:32:49,801 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:32:49,803 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 21 [2022-11-16 12:32:49,842 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:32:49,843 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-16 12:32:49,890 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:32:49,891 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 21 [2022-11-16 12:32:49,928 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:32:49,929 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-16 12:32:49,961 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:32:49,962 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-16 12:32:49,994 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:32:49,995 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 21 [2022-11-16 12:32:50,043 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:32:50,044 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 21 [2022-11-16 12:32:50,074 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:32:50,076 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 21 [2022-11-16 12:32:50,123 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:32:50,124 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 21 [2022-11-16 12:32:50,143 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:32:50,144 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-16 12:32:50,175 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:32:50,176 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-16 12:32:50,205 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:32:50,205 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-16 12:32:50,295 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 47 [2022-11-16 12:32:50,444 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_3650 (_ BitVec 32)) (v_ArrVal_3891 (_ BitVec 32))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_LDV_INIT_LIST_HEAD_#in~list.base| (store (store (select |c_old(#memory_$Pointer$.base)| |c_LDV_INIT_LIST_HEAD_#in~list.base|) |c_LDV_INIT_LIST_HEAD_#in~list.offset| v_ArrVal_3650) (bvadd (_ bv4 32) |c_LDV_INIT_LIST_HEAD_#in~list.offset|) v_ArrVal_3891)))) is different from true [2022-11-16 12:32:50,461 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:32:50,463 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:32:50,463 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 26 treesize of output 29 [2022-11-16 12:32:50,550 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:32:50,551 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:32:50,553 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:32:50,554 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:32:50,556 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 47 [2022-11-16 12:32:50,688 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_3902 (_ BitVec 32)) (v_ArrVal_3900 (_ BitVec 32)) (v_ArrVal_3901 (_ BitVec 32)) (v_ArrVal_3898 (_ BitVec 32))) (= (store |c_old(#memory_$Pointer$.base)| |c_ldv_kobject_put_#in~kobj#1.base| (store (store (store (store (select |c_old(#memory_$Pointer$.base)| |c_ldv_kobject_put_#in~kobj#1.base|) (bvadd |c_ldv_kobject_put_#in~kobj#1.offset| (_ bv12 32)) v_ArrVal_3902) (bvadd |c_ldv_kobject_put_#in~kobj#1.offset| (_ bv13 32)) v_ArrVal_3900) (bvadd (_ bv14 32) |c_ldv_kobject_put_#in~kobj#1.offset|) v_ArrVal_3901) (bvadd |c_ldv_kobject_put_#in~kobj#1.offset| (_ bv15 32)) v_ArrVal_3898)) |c_#memory_$Pointer$.base|)) is different from true [2022-11-16 12:32:50,773 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:32:50,775 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:32:50,776 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:32:50,779 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:32:50,780 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 47 [2022-11-16 12:32:51,012 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 39 [2022-11-16 12:32:51,315 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 12:32:51,315 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 15 treesize of output 15 [2022-11-16 12:32:51,562 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 141 refuted. 0 times theorem prover too weak. 0 trivial. 3 not checked. [2022-11-16 12:32:51,562 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:32:55,271 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1867746038] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:32:55,271 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:32:55,271 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 47] total 53 [2022-11-16 12:32:55,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515441625] [2022-11-16 12:32:55,272 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 12:32:55,272 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2022-11-16 12:32:55,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:32:55,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2022-11-16 12:32:55,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=222, Invalid=3450, Unknown=4, NotChecked=484, Total=4160 [2022-11-16 12:32:55,275 INFO L87 Difference]: Start difference. First operand 96 states and 97 transitions. Second operand has 53 states, 52 states have (on average 1.8269230769230769) internal successors, (95), 50 states have internal predecessors, (95), 4 states have call successors, (4), 3 states have call predecessors, (4), 5 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2022-11-16 12:32:59,741 WARN L855 $PredicateComparison]: unable to prove that (let ((.cse0 (select |c_old(#memory_$Pointer$.base)| |c_LDV_INIT_LIST_HEAD_#in~list.base|)) (.cse1 (bvadd (_ bv4 32) |c_LDV_INIT_LIST_HEAD_#in~list.offset|))) (and (exists ((v_ArrVal_3650 (_ BitVec 32)) (v_ArrVal_3891 (_ BitVec 32))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_LDV_INIT_LIST_HEAD_#in~list.base| (store (store .cse0 |c_LDV_INIT_LIST_HEAD_#in~list.offset| v_ArrVal_3650) .cse1 v_ArrVal_3891)))) (exists ((v_ArrVal_3650 (_ BitVec 32)) (v_ArrVal_3651 (_ BitVec 32))) (= (store |c_old(#memory_$Pointer$.base)| |c_LDV_INIT_LIST_HEAD_#in~list.base| (store (store .cse0 |c_LDV_INIT_LIST_HEAD_#in~list.offset| v_ArrVal_3650) .cse1 v_ArrVal_3651)) |c_#memory_$Pointer$.base|)))) is different from true [2022-11-16 12:33:05,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:33:05,762 INFO L93 Difference]: Finished difference Result 92 states and 92 transitions. [2022-11-16 12:33:05,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-11-16 12:33:05,763 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 52 states have (on average 1.8269230769230769) internal successors, (95), 50 states have internal predecessors, (95), 4 states have call successors, (4), 3 states have call predecessors, (4), 5 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Word has length 83 [2022-11-16 12:33:05,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:33:05,764 INFO L225 Difference]: With dead ends: 92 [2022-11-16 12:33:05,764 INFO L226 Difference]: Without dead ends: 91 [2022-11-16 12:33:05,766 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 137 SyntacticMatches, 2 SemanticMatches, 82 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 1712 ImplicationChecksByTransitivity, 12.6s TimeCoverageRelationStatistics Valid=486, Invalid=5685, Unknown=11, NotChecked=790, Total=6972 [2022-11-16 12:33:05,769 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 240 mSDsluCounter, 893 mSDsCounter, 0 mSdLazyCounter, 1603 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 240 SdHoareTripleChecker+Valid, 929 SdHoareTripleChecker+Invalid, 2041 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 1603 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 403 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2022-11-16 12:33:05,770 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [240 Valid, 929 Invalid, 2041 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 1603 Invalid, 0 Unknown, 403 Unchecked, 6.0s Time] [2022-11-16 12:33:05,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2022-11-16 12:33:05,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2022-11-16 12:33:05,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 82 states have (on average 1.0121951219512195) internal successors, (83), 82 states have internal predecessors, (83), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-16 12:33:05,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 91 transitions. [2022-11-16 12:33:05,775 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 91 transitions. Word has length 83 [2022-11-16 12:33:05,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:33:05,775 INFO L495 AbstractCegarLoop]: Abstraction has 91 states and 91 transitions. [2022-11-16 12:33:05,776 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 52 states have (on average 1.8269230769230769) internal successors, (95), 50 states have internal predecessors, (95), 4 states have call successors, (4), 3 states have call predecessors, (4), 5 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2022-11-16 12:33:05,776 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 91 transitions. [2022-11-16 12:33:05,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-11-16 12:33:05,777 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:33:05,777 INFO L195 NwaCegarLoop]: trace histogram [16, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:33:05,794 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8160929a-9e4c-41f1-afae-433f8348cbbd/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt (37)] Forceful destruction successful, exit code 0 [2022-11-16 12:33:06,011 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8160929a-9e4c-41f1-afae-433f8348cbbd/bin/uautomizer-tPACEb0tL8/mathsat -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)] Ended with exit code 0 [2022-11-16 12:33:06,189 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8160929a-9e4c-41f1-afae-433f8348cbbd/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt,36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8160929a-9e4c-41f1-afae-433f8348cbbd/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:33:06,189 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-11-16 12:33:06,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:33:06,190 INFO L85 PathProgramCache]: Analyzing trace with hash 102095468, now seen corresponding path program 1 times [2022-11-16 12:33:06,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:33:06,190 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1253791966] [2022-11-16 12:33:06,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:33:06,191 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:33:06,191 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8160929a-9e4c-41f1-afae-433f8348cbbd/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:33:06,192 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8160929a-9e4c-41f1-afae-433f8348cbbd/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:33:06,193 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8160929a-9e4c-41f1-afae-433f8348cbbd/bin/uautomizer-tPACEb0tL8/mathsat -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 [2022-11-16 12:33:06,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:33:06,915 INFO L263 TraceCheckSpWp]: Trace formula consists of 547 conjuncts, 30 conjunts are in the unsatisfiable core [2022-11-16 12:33:06,917 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:33:07,247 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2022-11-16 12:33:07,668 WARN L855 $PredicateComparison]: unable to prove that (exists ((|ULTIMATE.start_entry_point_~kobj~2#1.base| (_ BitVec 32))) (and (= (select |c_ULTIMATE.start_main_old_#valid#1| |ULTIMATE.start_entry_point_~kobj~2#1.base|) (_ bv0 1)) (= |c_#valid| (store |c_ULTIMATE.start_main_old_#valid#1| |ULTIMATE.start_entry_point_~kobj~2#1.base| (_ bv0 1))))) is different from true [2022-11-16 12:33:07,675 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 137 trivial. 0 not checked. [2022-11-16 12:33:07,675 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:33:08,668 WARN L833 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_ldv_kobject_create_#t~ret34#1.base_40| (_ BitVec 32))) (or (= (store |c_#valid| |v_ULTIMATE.start_ldv_kobject_create_#t~ret34#1.base_40| (_ bv0 1)) |c_ULTIMATE.start_main_old_#valid#1|) (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_ldv_kobject_create_#t~ret34#1.base_40|))))) is different from false [2022-11-16 12:33:08,671 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:33:08,671 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1253791966] [2022-11-16 12:33:08,671 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1253791966] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:33:08,671 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1362174851] [2022-11-16 12:33:08,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:33:08,671 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-16 12:33:08,671 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8160929a-9e4c-41f1-afae-433f8348cbbd/bin/uautomizer-tPACEb0tL8/cvc4 [2022-11-16 12:33:08,672 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8160929a-9e4c-41f1-afae-433f8348cbbd/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-16 12:33:08,674 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8160929a-9e4c-41f1-afae-433f8348cbbd/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt (39)] Waiting until timeout for monitored process [2022-11-16 12:33:10,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:33:10,108 INFO L263 TraceCheckSpWp]: Trace formula consists of 547 conjuncts, 31 conjunts are in the unsatisfiable core [2022-11-16 12:33:10,120 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:33:10,763 INFO L321 Elim1Store]: treesize reduction 23, result has 32.4 percent of original size [2022-11-16 12:33:10,764 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 17 treesize of output 25 [2022-11-16 12:33:11,396 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 137 trivial. 0 not checked. [2022-11-16 12:33:11,396 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:33:12,152 WARN L833 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_ldv_kobject_create_#t~ret34#1.base_43| (_ BitVec 32))) (or (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_ldv_kobject_create_#t~ret34#1.base_43|))) (= (store |c_#valid| |v_ULTIMATE.start_ldv_kobject_create_#t~ret34#1.base_43| (_ bv0 1)) |c_ULTIMATE.start_main_old_#valid#1|))) is different from false [2022-11-16 12:33:12,155 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1362174851] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:33:12,155 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:33:12,155 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 19 [2022-11-16 12:33:12,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621148594] [2022-11-16 12:33:12,156 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 12:33:12,156 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-16 12:33:12,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:33:12,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-16 12:33:12,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=625, Unknown=3, NotChecked=156, Total=870 [2022-11-16 12:33:12,158 INFO L87 Difference]: Start difference. First operand 91 states and 91 transitions. Second operand has 20 states, 18 states have (on average 5.333333333333333) internal successors, (96), 18 states have internal predecessors, (96), 6 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (8), 8 states have call predecessors, (8), 6 states have call successors, (8) [2022-11-16 12:33:12,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:33:12,767 INFO L93 Difference]: Finished difference Result 90 states and 90 transitions. [2022-11-16 12:33:12,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-16 12:33:12,767 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 18 states have (on average 5.333333333333333) internal successors, (96), 18 states have internal predecessors, (96), 6 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (8), 8 states have call predecessors, (8), 6 states have call successors, (8) Word has length 90 [2022-11-16 12:33:12,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:33:12,768 INFO L225 Difference]: With dead ends: 90 [2022-11-16 12:33:12,768 INFO L226 Difference]: Without dead ends: 0 [2022-11-16 12:33:12,768 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 352 GetRequests, 314 SyntacticMatches, 6 SemanticMatches, 32 ConstructedPredicates, 3 IntricatePredicates, 4 DeprecatedPredicates, 272 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=114, Invalid=825, Unknown=3, NotChecked=180, Total=1122 [2022-11-16 12:33:12,769 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 32 mSDsluCounter, 416 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 456 SdHoareTripleChecker+Invalid, 291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 189 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-16 12:33:12,769 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 456 Invalid, 291 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 99 Invalid, 0 Unknown, 189 Unchecked, 0.3s Time] [2022-11-16 12:33:12,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-16 12:33:12,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-16 12:33:12,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:33:12,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-16 12:33:12,770 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 90 [2022-11-16 12:33:12,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:33:12,770 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-16 12:33:12,771 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 18 states have (on average 5.333333333333333) internal successors, (96), 18 states have internal predecessors, (96), 6 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (8), 8 states have call predecessors, (8), 6 states have call successors, (8) [2022-11-16 12:33:12,771 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-16 12:33:12,771 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-16 12:33:12,775 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE (24 of 25 remaining) [2022-11-16 12:33:12,775 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE (23 of 25 remaining) [2022-11-16 12:33:12,776 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (22 of 25 remaining) [2022-11-16 12:33:12,776 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (21 of 25 remaining) [2022-11-16 12:33:12,776 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (20 of 25 remaining) [2022-11-16 12:33:12,776 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 25 remaining) [2022-11-16 12:33:12,777 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 25 remaining) [2022-11-16 12:33:12,777 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 25 remaining) [2022-11-16 12:33:12,777 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK (16 of 25 remaining) [2022-11-16 12:33:12,777 INFO L805 garLoopResultBuilder]: Registering result SAFE for location LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 25 remaining) [2022-11-16 12:33:12,778 INFO L805 garLoopResultBuilder]: Registering result SAFE for location LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 25 remaining) [2022-11-16 12:33:12,778 INFO L805 garLoopResultBuilder]: Registering result SAFE for location LDV_INIT_LIST_HEADErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 25 remaining) [2022-11-16 12:33:12,778 INFO L805 garLoopResultBuilder]: Registering result SAFE for location LDV_INIT_LIST_HEADErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 25 remaining) [2022-11-16 12:33:12,778 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ldv_kobject_putErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 25 remaining) [2022-11-16 12:33:12,779 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ldv_kobject_putErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 25 remaining) [2022-11-16 12:33:12,779 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ldv_kobject_putErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 25 remaining) [2022-11-16 12:33:12,779 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ldv_kobject_putErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 25 remaining) [2022-11-16 12:33:12,779 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ldv_kobject_putErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 25 remaining) [2022-11-16 12:33:12,779 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ldv_kobject_putErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 25 remaining) [2022-11-16 12:33:12,780 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ldv_kobject_putErr6ASSERT_VIOLATIONMEMORY_FREE (5 of 25 remaining) [2022-11-16 12:33:12,780 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ldv_kobject_putErr7ASSERT_VIOLATIONMEMORY_FREE (4 of 25 remaining) [2022-11-16 12:33:12,780 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ldv_kobject_putErr8ASSERT_VIOLATIONMEMORY_FREE (3 of 25 remaining) [2022-11-16 12:33:12,780 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ldv_kobject_putErr9ASSERT_VIOLATIONMEMORY_FREE (2 of 25 remaining) [2022-11-16 12:33:12,781 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ldv_kobject_putErr10ASSERT_VIOLATIONMEMORY_FREE (1 of 25 remaining) [2022-11-16 12:33:12,781 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ldv_kobject_putErr11ASSERT_VIOLATIONMEMORY_FREE (0 of 25 remaining) [2022-11-16 12:33:12,794 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8160929a-9e4c-41f1-afae-433f8348cbbd/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt (39)] Forceful destruction successful, exit code 0 [2022-11-16 12:33:13,005 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8160929a-9e4c-41f1-afae-433f8348cbbd/bin/uautomizer-tPACEb0tL8/mathsat -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)] Ended with exit code 0 [2022-11-16 12:33:13,193 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8160929a-9e4c-41f1-afae-433f8348cbbd/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt,38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8160929a-9e4c-41f1-afae-433f8348cbbd/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:33:13,196 INFO L444 BasicCegarLoop]: Path program histogram: [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:33:13,198 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-16 12:33:13,201 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.11 12:33:13 BoogieIcfgContainer [2022-11-16 12:33:13,201 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-16 12:33:13,202 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-16 12:33:13,202 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-16 12:33:13,202 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-16 12:33:13,203 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:29:28" (3/4) ... [2022-11-16 12:33:13,206 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-16 12:33:13,213 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure ldv_malloc [2022-11-16 12:33:13,214 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure LDV_INIT_LIST_HEAD [2022-11-16 12:33:13,214 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure ldv_kobject_put [2022-11-16 12:33:13,221 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 44 nodes and edges [2022-11-16 12:33:13,222 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2022-11-16 12:33:13,222 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-11-16 12:33:13,222 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-16 12:33:13,268 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8160929a-9e4c-41f1-afae-433f8348cbbd/bin/uautomizer-tPACEb0tL8/witness.graphml [2022-11-16 12:33:13,269 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-16 12:33:13,269 INFO L158 Benchmark]: Toolchain (without parser) took 226405.26ms. Allocated memory was 67.1MB in the beginning and 132.1MB in the end (delta: 65.0MB). Free memory was 45.8MB in the beginning and 36.2MB in the end (delta: 9.6MB). Peak memory consumption was 74.8MB. Max. memory is 16.1GB. [2022-11-16 12:33:13,270 INFO L158 Benchmark]: CDTParser took 0.26ms. Allocated memory is still 67.1MB. Free memory was 47.9MB in the beginning and 47.8MB in the end (delta: 53.9kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-16 12:33:13,270 INFO L158 Benchmark]: CACSL2BoogieTranslator took 864.77ms. Allocated memory is still 67.1MB. Free memory was 45.6MB in the beginning and 34.0MB in the end (delta: 11.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-16 12:33:13,270 INFO L158 Benchmark]: Boogie Procedure Inliner took 96.06ms. Allocated memory is still 67.1MB. Free memory was 34.0MB in the beginning and 31.2MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-16 12:33:13,271 INFO L158 Benchmark]: Boogie Preprocessor took 82.63ms. Allocated memory is still 67.1MB. Free memory was 31.2MB in the beginning and 50.3MB in the end (delta: -19.1MB). Peak memory consumption was 7.9MB. Max. memory is 16.1GB. [2022-11-16 12:33:13,271 INFO L158 Benchmark]: RCFGBuilder took 814.41ms. Allocated memory was 67.1MB in the beginning and 90.2MB in the end (delta: 23.1MB). Free memory was 50.3MB in the beginning and 67.4MB in the end (delta: -17.2MB). Peak memory consumption was 22.5MB. Max. memory is 16.1GB. [2022-11-16 12:33:13,271 INFO L158 Benchmark]: TraceAbstraction took 224471.25ms. Allocated memory was 90.2MB in the beginning and 132.1MB in the end (delta: 41.9MB). Free memory was 66.9MB in the beginning and 41.0MB in the end (delta: 25.9MB). Peak memory consumption was 68.4MB. Max. memory is 16.1GB. [2022-11-16 12:33:13,272 INFO L158 Benchmark]: Witness Printer took 66.95ms. Allocated memory is still 132.1MB. Free memory was 41.0MB in the beginning and 36.2MB in the end (delta: 4.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-16 12:33:13,273 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26ms. Allocated memory is still 67.1MB. Free memory was 47.9MB in the beginning and 47.8MB in the end (delta: 53.9kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 864.77ms. Allocated memory is still 67.1MB. Free memory was 45.6MB in the beginning and 34.0MB in the end (delta: 11.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 96.06ms. Allocated memory is still 67.1MB. Free memory was 34.0MB in the beginning and 31.2MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 82.63ms. Allocated memory is still 67.1MB. Free memory was 31.2MB in the beginning and 50.3MB in the end (delta: -19.1MB). Peak memory consumption was 7.9MB. Max. memory is 16.1GB. * RCFGBuilder took 814.41ms. Allocated memory was 67.1MB in the beginning and 90.2MB in the end (delta: 23.1MB). Free memory was 50.3MB in the beginning and 67.4MB in the end (delta: -17.2MB). Peak memory consumption was 22.5MB. Max. memory is 16.1GB. * TraceAbstraction took 224471.25ms. Allocated memory was 90.2MB in the beginning and 132.1MB in the end (delta: 41.9MB). Free memory was 66.9MB in the beginning and 41.0MB in the end (delta: 25.9MB). Peak memory consumption was 68.4MB. Max. memory is 16.1GB. * Witness Printer took 66.95ms. Allocated memory is still 132.1MB. Free memory was 41.0MB in the beginning and 36.2MB in the end (delta: 4.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 770]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 700]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 700]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 700]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 702]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 702]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 702]: free always succeeds For all program executions holds that free always succeeds at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 92 locations, 25 error locations. Started 1 CEGAR loops. OverallTime: 224.4s, OverallIterations: 34, TraceHistogramMax: 16, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 93.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 3120 SdHoareTripleChecker+Valid, 27.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 3097 mSDsluCounter, 17802 SdHoareTripleChecker+Invalid, 23.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 1829 IncrementalHoareTripleChecker+Unchecked, 15212 mSDsCounter, 286 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 9223 IncrementalHoareTripleChecker+Invalid, 11338 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 286 mSolverCounterUnsat, 2590 mSDtfsCounter, 9223 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2520 GetRequests, 1827 SyntacticMatches, 23 SemanticMatches, 670 ConstructedPredicates, 17 IntricatePredicates, 4 DeprecatedPredicates, 7587 ImplicationChecksByTransitivity, 147.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=114occurred in iteration=25, InterpolantAutomatonStates: 465, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 34 MinimizatonAttempts, 351 StatesRemovedByMinimization, 22 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 1.0s SsaConstructionTime, 9.5s SatisfiabilityAnalysisTime, 107.0s InterpolantComputationTime, 1832 NumberOfCodeBlocks, 1802 NumberOfCodeBlocksAsserted, 38 NumberOfCheckSat, 2000 ConstructedInterpolants, 241 QuantifiedInterpolants, 21733 SizeOfPredicates, 898 NumberOfNonLiveVariables, 11729 ConjunctsInSsa, 1540 ConjunctsInUnsatCore, 43 InterpolantComputations, 25 PerfectInterpolantSequences, 3103/3985 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 25 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-11-16 12:33:13,410 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8160929a-9e4c-41f1-afae-433f8348cbbd/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE