./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ldv-memsafety/memleaks_test22_1-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version e04fb08f Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd38f052-e129-49b9-b885-cdbb5dcb6687/bin/utaipan-Xvt2sAort0/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd38f052-e129-49b9-b885-cdbb5dcb6687/bin/utaipan-Xvt2sAort0/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd38f052-e129-49b9-b885-cdbb5dcb6687/bin/utaipan-Xvt2sAort0/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd38f052-e129-49b9-b885-cdbb5dcb6687/bin/utaipan-Xvt2sAort0/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test22_1-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd38f052-e129-49b9-b885-cdbb5dcb6687/bin/utaipan-Xvt2sAort0/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd38f052-e129-49b9-b885-cdbb5dcb6687/bin/utaipan-Xvt2sAort0 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash aa61daf361995635005a262e43d385a4b2c55dcce46079a14f1db13e5b0af9cd --- 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 20:21:43,409 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 20:21:43,412 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 20:21:43,461 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 20:21:43,462 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 20:21:43,467 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 20:21:43,469 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 20:21:43,473 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 20:21:43,476 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 20:21:43,485 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 20:21:43,487 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 20:21:43,489 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 20:21:43,490 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 20:21:43,492 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 20:21:43,494 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 20:21:43,495 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 20:21:43,497 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 20:21:43,498 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 20:21:43,500 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 20:21:43,506 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 20:21:43,509 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 20:21:43,510 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 20:21:43,514 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 20:21:43,515 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 20:21:43,526 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 20:21:43,527 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 20:21:43,527 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 20:21:43,529 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 20:21:43,530 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 20:21:43,532 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 20:21:43,532 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 20:21:43,534 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 20:21:43,536 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 20:21:43,538 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 20:21:43,539 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 20:21:43,540 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 20:21:43,541 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 20:21:43,541 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 20:21:43,541 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 20:21:43,543 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 20:21:43,543 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 20:21:43,544 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd38f052-e129-49b9-b885-cdbb5dcb6687/bin/utaipan-Xvt2sAort0/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2022-11-16 20:21:43,591 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 20:21:43,591 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 20:21:43,592 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 20:21:43,592 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 20:21:43,593 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 20:21:43,594 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 20:21:43,594 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-16 20:21:43,594 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-16 20:21:43,595 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-16 20:21:43,595 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-16 20:21:43,596 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-16 20:21:43,597 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-16 20:21:43,597 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-16 20:21:43,597 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-16 20:21:43,598 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-16 20:21:43,598 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-16 20:21:43,598 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-16 20:21:43,599 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-16 20:21:43,600 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 20:21:43,600 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 20:21:43,601 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 20:21:43,601 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 20:21:43,601 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-16 20:21:43,602 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 20:21:43,602 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 20:21:43,602 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 20:21:43,603 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-16 20:21:43,603 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-16 20:21:43,603 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-16 20:21:43,604 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 20:21:43,604 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-16 20:21:43,605 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 20:21:43,605 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 20:21:43,605 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 20:21:43,606 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 20:21:43,606 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 20:21:43,606 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 20:21:43,607 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-16 20:21:43,607 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 20:21:43,607 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-16 20:21:43,608 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 20:21:43,608 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-16 20:21:43,608 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_cd38f052-e129-49b9-b885-cdbb5dcb6687/bin/utaipan-Xvt2sAort0/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd38f052-e129-49b9-b885-cdbb5dcb6687/bin/utaipan-Xvt2sAort0 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> aa61daf361995635005a262e43d385a4b2c55dcce46079a14f1db13e5b0af9cd [2022-11-16 20:21:43,986 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 20:21:44,019 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 20:21:44,022 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 20:21:44,023 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 20:21:44,024 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 20:21:44,026 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd38f052-e129-49b9-b885-cdbb5dcb6687/bin/utaipan-Xvt2sAort0/../../sv-benchmarks/c/ldv-memsafety/memleaks_test22_1-1.i [2022-11-16 20:21:44,109 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd38f052-e129-49b9-b885-cdbb5dcb6687/bin/utaipan-Xvt2sAort0/data/7753f08e4/72dfe334532b436dba174d905f2b87af/FLAG0c08749c5 [2022-11-16 20:21:44,695 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 20:21:44,696 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd38f052-e129-49b9-b885-cdbb5dcb6687/sv-benchmarks/c/ldv-memsafety/memleaks_test22_1-1.i [2022-11-16 20:21:44,710 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd38f052-e129-49b9-b885-cdbb5dcb6687/bin/utaipan-Xvt2sAort0/data/7753f08e4/72dfe334532b436dba174d905f2b87af/FLAG0c08749c5 [2022-11-16 20:21:44,973 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd38f052-e129-49b9-b885-cdbb5dcb6687/bin/utaipan-Xvt2sAort0/data/7753f08e4/72dfe334532b436dba174d905f2b87af [2022-11-16 20:21:44,978 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 20:21:44,979 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 20:21:44,987 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 20:21:44,987 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 20:21:44,991 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 20:21:44,992 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 08:21:44" (1/1) ... [2022-11-16 20:21:44,994 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e6d70c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:21:44, skipping insertion in model container [2022-11-16 20:21:44,995 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 08:21:44" (1/1) ... [2022-11-16 20:21:45,004 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 20:21:45,063 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 20:21:45,579 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 20:21:45,604 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 20:21:45,605 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@73c432db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:21:45, skipping insertion in model container [2022-11-16 20:21:45,605 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 20:21:45,606 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2022-11-16 20:21:45,610 INFO L158 Benchmark]: Toolchain (without parser) took 628.32ms. Allocated memory is still 115.3MB. Free memory was 72.1MB in the beginning and 85.2MB in the end (delta: -13.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-16 20:21:45,610 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 115.3MB. Free memory is still 89.7MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 20:21:45,612 INFO L158 Benchmark]: CACSL2BoogieTranslator took 618.97ms. Allocated memory is still 115.3MB. Free memory was 71.9MB in the beginning and 85.2MB in the end (delta: -13.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-16 20:21:45,615 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21ms. Allocated memory is still 115.3MB. Free memory is still 89.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 618.97ms. Allocated memory is still 115.3MB. Free memory was 71.9MB in the beginning and 85.2MB in the end (delta: -13.4MB). Peak memory consumption was 8.4MB. 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-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd38f052-e129-49b9-b885-cdbb5dcb6687/bin/utaipan-Xvt2sAort0/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd38f052-e129-49b9-b885-cdbb5dcb6687/bin/utaipan-Xvt2sAort0/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd38f052-e129-49b9-b885-cdbb5dcb6687/bin/utaipan-Xvt2sAort0/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd38f052-e129-49b9-b885-cdbb5dcb6687/bin/utaipan-Xvt2sAort0/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test22_1-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd38f052-e129-49b9-b885-cdbb5dcb6687/bin/utaipan-Xvt2sAort0/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd38f052-e129-49b9-b885-cdbb5dcb6687/bin/utaipan-Xvt2sAort0 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash aa61daf361995635005a262e43d385a4b2c55dcce46079a14f1db13e5b0af9cd --- 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 20:21:48,183 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 20:21:48,185 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 20:21:48,211 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 20:21:48,216 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 20:21:48,221 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 20:21:48,225 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 20:21:48,231 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 20:21:48,233 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 20:21:48,244 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 20:21:48,245 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 20:21:48,247 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 20:21:48,248 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 20:21:48,249 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 20:21:48,252 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 20:21:48,254 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 20:21:48,257 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 20:21:48,258 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 20:21:48,261 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 20:21:48,263 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 20:21:48,273 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 20:21:48,276 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 20:21:48,277 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 20:21:48,278 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 20:21:48,282 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 20:21:48,284 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 20:21:48,284 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 20:21:48,285 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 20:21:48,287 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 20:21:48,288 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 20:21:48,290 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 20:21:48,291 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 20:21:48,292 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 20:21:48,294 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 20:21:48,296 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 20:21:48,297 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 20:21:48,298 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 20:21:48,298 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 20:21:48,298 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 20:21:48,300 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 20:21:48,301 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 20:21:48,306 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd38f052-e129-49b9-b885-cdbb5dcb6687/bin/utaipan-Xvt2sAort0/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2022-11-16 20:21:48,348 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 20:21:48,348 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 20:21:48,348 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 20:21:48,349 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 20:21:48,349 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 20:21:48,349 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 20:21:48,350 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-16 20:21:48,350 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-16 20:21:48,350 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-16 20:21:48,350 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-16 20:21:48,359 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-16 20:21:48,359 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-16 20:21:48,364 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 20:21:48,364 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 20:21:48,365 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 20:21:48,365 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 20:21:48,365 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-16 20:21:48,365 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 20:21:48,365 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 20:21:48,366 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 20:21:48,366 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-16 20:21:48,366 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-16 20:21:48,366 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-16 20:21:48,366 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 20:21:48,367 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-16 20:21:48,367 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-16 20:21:48,367 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-16 20:21:48,367 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 20:21:48,367 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 20:21:48,368 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 20:21:48,368 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 20:21:48,368 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 20:21:48,368 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 20:21:48,369 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 20:21:48,369 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 20:21:48,369 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-11-16 20:21:48,369 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-16 20:21:48,370 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-16 20:21:48,370 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-16 20:21:48,370 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_cd38f052-e129-49b9-b885-cdbb5dcb6687/bin/utaipan-Xvt2sAort0/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd38f052-e129-49b9-b885-cdbb5dcb6687/bin/utaipan-Xvt2sAort0 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> aa61daf361995635005a262e43d385a4b2c55dcce46079a14f1db13e5b0af9cd [2022-11-16 20:21:48,784 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 20:21:48,815 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 20:21:48,818 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 20:21:48,820 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 20:21:48,820 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 20:21:48,822 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd38f052-e129-49b9-b885-cdbb5dcb6687/bin/utaipan-Xvt2sAort0/../../sv-benchmarks/c/ldv-memsafety/memleaks_test22_1-1.i [2022-11-16 20:21:48,915 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd38f052-e129-49b9-b885-cdbb5dcb6687/bin/utaipan-Xvt2sAort0/data/4c8de7e81/96870ce95d1c4495a64019180b7e9f49/FLAGef2e7bb23 [2022-11-16 20:21:49,677 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 20:21:49,678 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd38f052-e129-49b9-b885-cdbb5dcb6687/sv-benchmarks/c/ldv-memsafety/memleaks_test22_1-1.i [2022-11-16 20:21:49,698 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd38f052-e129-49b9-b885-cdbb5dcb6687/bin/utaipan-Xvt2sAort0/data/4c8de7e81/96870ce95d1c4495a64019180b7e9f49/FLAGef2e7bb23 [2022-11-16 20:21:49,947 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd38f052-e129-49b9-b885-cdbb5dcb6687/bin/utaipan-Xvt2sAort0/data/4c8de7e81/96870ce95d1c4495a64019180b7e9f49 [2022-11-16 20:21:49,950 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 20:21:49,951 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 20:21:49,959 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 20:21:49,959 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 20:21:49,964 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 20:21:49,965 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 08:21:49" (1/1) ... [2022-11-16 20:21:49,966 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51ce2f32 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:21:49, skipping insertion in model container [2022-11-16 20:21:49,967 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 08:21:49" (1/1) ... [2022-11-16 20:21:49,975 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 20:21:50,021 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 20:21:50,554 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 20:21:50,574 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-11-16 20:21:50,584 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 20:21:50,655 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 20:21:50,666 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 20:21:50,759 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 20:21:50,826 INFO L208 MainTranslator]: Completed translation [2022-11-16 20:21:50,826 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:21:50 WrapperNode [2022-11-16 20:21:50,827 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 20:21:50,829 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 20:21:50,829 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 20:21:50,829 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 20:21:50,837 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:21:50" (1/1) ... [2022-11-16 20:21:50,873 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:21:50" (1/1) ... [2022-11-16 20:21:50,935 INFO L138 Inliner]: procedures = 165, calls = 70, calls flagged for inlining = 24, calls inlined = 18, statements flattened = 119 [2022-11-16 20:21:50,936 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 20:21:50,937 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 20:21:50,938 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 20:21:50,938 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 20:21:50,949 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:21:50" (1/1) ... [2022-11-16 20:21:50,949 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:21:50" (1/1) ... [2022-11-16 20:21:50,971 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:21:50" (1/1) ... [2022-11-16 20:21:50,971 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:21:50" (1/1) ... [2022-11-16 20:21:50,981 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:21:50" (1/1) ... [2022-11-16 20:21:51,009 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:21:50" (1/1) ... [2022-11-16 20:21:51,012 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:21:50" (1/1) ... [2022-11-16 20:21:51,014 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:21:50" (1/1) ... [2022-11-16 20:21:51,018 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 20:21:51,019 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 20:21:51,019 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 20:21:51,019 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 20:21:51,020 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:21:50" (1/1) ... [2022-11-16 20:21:51,038 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 20:21:51,051 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd38f052-e129-49b9-b885-cdbb5dcb6687/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 20:21:51,064 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd38f052-e129-49b9-b885-cdbb5dcb6687/bin/utaipan-Xvt2sAort0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 20:21:51,076 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd38f052-e129-49b9-b885-cdbb5dcb6687/bin/utaipan-Xvt2sAort0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 20:21:51,120 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-11-16 20:21:51,122 INFO L130 BoogieDeclarations]: Found specification of procedure LDV_INIT_LIST_HEAD [2022-11-16 20:21:51,122 INFO L138 BoogieDeclarations]: Found implementation of procedure LDV_INIT_LIST_HEAD [2022-11-16 20:21:51,122 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-16 20:21:51,122 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-16 20:21:51,123 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-16 20:21:51,123 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 20:21:51,123 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-16 20:21:51,123 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-16 20:21:51,123 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-11-16 20:21:51,124 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 20:21:51,124 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-16 20:21:51,124 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 20:21:51,124 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 20:21:51,379 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 20:21:51,381 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 20:21:52,011 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 20:21:52,025 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 20:21:52,026 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-16 20:21:52,028 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 08:21:52 BoogieIcfgContainer [2022-11-16 20:21:52,028 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 20:21:52,031 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 20:21:52,031 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 20:21:52,034 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 20:21:52,034 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 08:21:49" (1/3) ... [2022-11-16 20:21:52,040 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b198794 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 08:21:52, skipping insertion in model container [2022-11-16 20:21:52,040 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:21:50" (2/3) ... [2022-11-16 20:21:52,041 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b198794 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 08:21:52, skipping insertion in model container [2022-11-16 20:21:52,042 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 08:21:52" (3/3) ... [2022-11-16 20:21:52,043 INFO L112 eAbstractionObserver]: Analyzing ICFG memleaks_test22_1-1.i [2022-11-16 20:21:52,062 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 20:21:52,062 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 25 error locations. [2022-11-16 20:21:52,126 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 20:21:52,134 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;@2a894211, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 20:21:52,134 INFO L358 AbstractCegarLoop]: Starting to check reachability of 25 error locations. [2022-11-16 20:21:52,140 INFO L276 IsEmpty]: Start isEmpty. Operand has 86 states, 56 states have (on average 1.6071428571428572) internal successors, (90), 82 states have internal predecessors, (90), 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 20:21:52,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-16 20:21:52,149 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 20:21:52,149 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 20:21:52,163 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 20:21:52,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 20:21:52,178 INFO L85 PathProgramCache]: Analyzing trace with hash 1571354969, now seen corresponding path program 1 times [2022-11-16 20:21:52,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-16 20:21:52,192 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [348720007] [2022-11-16 20:21:52,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:21:52,192 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 20:21:52,193 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd38f052-e129-49b9-b885-cdbb5dcb6687/bin/utaipan-Xvt2sAort0/mathsat [2022-11-16 20:21:52,199 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd38f052-e129-49b9-b885-cdbb5dcb6687/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 20:21:52,240 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd38f052-e129-49b9-b885-cdbb5dcb6687/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-16 20:21:52,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:21:52,338 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-16 20:21:52,345 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 20:21:52,427 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-16 20:21:52,525 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 20:21:52,525 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 20:21:52,526 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-16 20:21:52,526 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [348720007] [2022-11-16 20:21:52,527 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [348720007] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 20:21:52,527 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 20:21:52,527 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 20:21:52,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057046030] [2022-11-16 20:21:52,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 20:21:52,534 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 20:21:52,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-16 20:21:52,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 20:21:52,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-16 20:21:52,583 INFO L87 Difference]: Start difference. First operand has 86 states, 56 states have (on average 1.6071428571428572) internal successors, (90), 82 states have internal predecessors, (90), 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) 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 20:21:53,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 20:21:53,405 INFO L93 Difference]: Finished difference Result 233 states and 252 transitions. [2022-11-16 20:21:53,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 20:21:53,408 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 20:21:53,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 20:21:53,418 INFO L225 Difference]: With dead ends: 233 [2022-11-16 20:21:53,418 INFO L226 Difference]: Without dead ends: 225 [2022-11-16 20:21:53,420 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 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 20:21:53,423 INFO L413 NwaCegarLoop]: 101 mSDtfsCounter, 181 mSDsluCounter, 309 mSDsCounter, 0 mSdLazyCounter, 226 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 182 SdHoareTripleChecker+Valid, 410 SdHoareTripleChecker+Invalid, 229 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 226 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-16 20:21:53,424 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [182 Valid, 410 Invalid, 229 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 226 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-16 20:21:53,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2022-11-16 20:21:53,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 89. [2022-11-16 20:21:53,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 59 states have (on average 1.576271186440678) internal successors, (93), 84 states have internal predecessors, (93), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-16 20:21:53,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 98 transitions. [2022-11-16 20:21:53,478 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 98 transitions. Word has length 10 [2022-11-16 20:21:53,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 20:21:53,479 INFO L495 AbstractCegarLoop]: Abstraction has 89 states and 98 transitions. [2022-11-16 20:21:53,479 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 20:21:53,480 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 98 transitions. [2022-11-16 20:21:53,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-16 20:21:53,480 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 20:21:53,480 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 20:21:53,500 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd38f052-e129-49b9-b885-cdbb5dcb6687/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-11-16 20:21:53,681 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd38f052-e129-49b9-b885-cdbb5dcb6687/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 20:21:53,682 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 20:21:53,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 20:21:53,682 INFO L85 PathProgramCache]: Analyzing trace with hash 1599984120, now seen corresponding path program 1 times [2022-11-16 20:21:53,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-16 20:21:53,683 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [591941847] [2022-11-16 20:21:53,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:21:53,684 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 20:21:53,684 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd38f052-e129-49b9-b885-cdbb5dcb6687/bin/utaipan-Xvt2sAort0/mathsat [2022-11-16 20:21:53,687 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd38f052-e129-49b9-b885-cdbb5dcb6687/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 20:21:53,730 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd38f052-e129-49b9-b885-cdbb5dcb6687/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-16 20:21:53,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:21:53,778 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-16 20:21:53,780 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 20:21:53,860 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 20:21:53,860 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 20:21:53,860 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-16 20:21:53,861 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [591941847] [2022-11-16 20:21:53,862 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [591941847] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 20:21:53,865 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 20:21:53,866 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 20:21:53,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598307938] [2022-11-16 20:21:53,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 20:21:53,868 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 20:21:53,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-16 20:21:53,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 20:21:53,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 20:21:53,871 INFO L87 Difference]: Start difference. First operand 89 states and 98 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 20:21:53,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 20:21:53,933 INFO L93 Difference]: Finished difference Result 138 states and 149 transitions. [2022-11-16 20:21:53,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 20:21:53,938 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 20:21:53,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 20:21:53,945 INFO L225 Difference]: With dead ends: 138 [2022-11-16 20:21:53,945 INFO L226 Difference]: Without dead ends: 138 [2022-11-16 20:21:53,946 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 20:21:53,947 INFO L413 NwaCegarLoop]: 93 mSDtfsCounter, 54 mSDsluCounter, 266 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 359 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 20:21:53,948 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 359 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 20:21:53,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2022-11-16 20:21:53,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 87. [2022-11-16 20:21:53,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 58 states have (on average 1.5517241379310345) internal successors, (90), 82 states have internal predecessors, (90), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-16 20:21:53,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 95 transitions. [2022-11-16 20:21:53,958 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 95 transitions. Word has length 10 [2022-11-16 20:21:53,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 20:21:53,959 INFO L495 AbstractCegarLoop]: Abstraction has 87 states and 95 transitions. [2022-11-16 20:21:53,959 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 20:21:53,959 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 95 transitions. [2022-11-16 20:21:53,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-16 20:21:53,960 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 20:21:53,960 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 20:21:53,981 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd38f052-e129-49b9-b885-cdbb5dcb6687/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-16 20:21:54,174 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd38f052-e129-49b9-b885-cdbb5dcb6687/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 20:21:54,174 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 20:21:54,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 20:21:54,175 INFO L85 PathProgramCache]: Analyzing trace with hash 1467363832, now seen corresponding path program 1 times [2022-11-16 20:21:54,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-16 20:21:54,176 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [395685251] [2022-11-16 20:21:54,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:21:54,176 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 20:21:54,176 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd38f052-e129-49b9-b885-cdbb5dcb6687/bin/utaipan-Xvt2sAort0/mathsat [2022-11-16 20:21:54,180 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd38f052-e129-49b9-b885-cdbb5dcb6687/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 20:21:54,222 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd38f052-e129-49b9-b885-cdbb5dcb6687/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-11-16 20:21:54,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:21:54,268 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-16 20:21:54,272 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 20:21:54,301 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 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 20:21:54,468 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 20:21:54,468 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 20:21:54,468 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-16 20:21:54,469 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [395685251] [2022-11-16 20:21:54,469 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [395685251] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 20:21:54,469 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 20:21:54,469 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-16 20:21:54,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747052710] [2022-11-16 20:21:54,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 20:21:54,470 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 20:21:54,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-16 20:21:54,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 20:21:54,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-16 20:21:54,471 INFO L87 Difference]: Start difference. First operand 87 states and 95 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 20:21:55,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 20:21:55,078 INFO L93 Difference]: Finished difference Result 188 states and 202 transitions. [2022-11-16 20:21:55,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 20:21:55,079 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 20:21:55,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 20:21:55,080 INFO L225 Difference]: With dead ends: 188 [2022-11-16 20:21:55,080 INFO L226 Difference]: Without dead ends: 188 [2022-11-16 20:21:55,081 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 20:21:55,082 INFO L413 NwaCegarLoop]: 111 mSDtfsCounter, 143 mSDsluCounter, 416 mSDsCounter, 0 mSdLazyCounter, 190 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 527 SdHoareTripleChecker+Invalid, 192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-16 20:21:55,083 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [143 Valid, 527 Invalid, 192 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 190 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-16 20:21:55,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2022-11-16 20:21:55,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 86. [2022-11-16 20:21:55,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 58 states have (on average 1.5344827586206897) internal successors, (89), 81 states have internal predecessors, (89), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-16 20:21:55,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 94 transitions. [2022-11-16 20:21:55,101 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 94 transitions. Word has length 11 [2022-11-16 20:21:55,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 20:21:55,102 INFO L495 AbstractCegarLoop]: Abstraction has 86 states and 94 transitions. [2022-11-16 20:21:55,102 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 20:21:55,102 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 94 transitions. [2022-11-16 20:21:55,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-16 20:21:55,103 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 20:21:55,103 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 20:21:55,124 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd38f052-e129-49b9-b885-cdbb5dcb6687/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-11-16 20:21:55,323 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd38f052-e129-49b9-b885-cdbb5dcb6687/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 20:21:55,324 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 20:21:55,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 20:21:55,325 INFO L85 PathProgramCache]: Analyzing trace with hash -1756388193, now seen corresponding path program 1 times [2022-11-16 20:21:55,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-16 20:21:55,325 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1225873131] [2022-11-16 20:21:55,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:21:55,325 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 20:21:55,326 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd38f052-e129-49b9-b885-cdbb5dcb6687/bin/utaipan-Xvt2sAort0/mathsat [2022-11-16 20:21:55,330 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd38f052-e129-49b9-b885-cdbb5dcb6687/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 20:21:55,366 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd38f052-e129-49b9-b885-cdbb5dcb6687/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-11-16 20:21:55,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:21:55,423 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 20:21:55,424 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 20:21:55,471 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 20:21:55,471 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 20:21:55,472 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-16 20:21:55,472 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1225873131] [2022-11-16 20:21:55,472 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1225873131] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 20:21:55,473 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 20:21:55,473 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 20:21:55,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254282455] [2022-11-16 20:21:55,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 20:21:55,474 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 20:21:55,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-16 20:21:55,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 20:21:55,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 20:21:55,475 INFO L87 Difference]: Start difference. First operand 86 states and 94 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 20:21:55,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 20:21:55,509 INFO L93 Difference]: Finished difference Result 137 states and 147 transitions. [2022-11-16 20:21:55,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 20:21:55,511 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 20:21:55,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 20:21:55,512 INFO L225 Difference]: With dead ends: 137 [2022-11-16 20:21:55,512 INFO L226 Difference]: Without dead ends: 137 [2022-11-16 20:21:55,513 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 20:21:55,525 INFO L413 NwaCegarLoop]: 140 mSDtfsCounter, 70 mSDsluCounter, 346 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 486 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 20:21:55,526 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 486 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 20:21:55,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2022-11-16 20:21:55,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 86. [2022-11-16 20:21:55,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 58 states have (on average 1.5172413793103448) internal successors, (88), 81 states have internal predecessors, (88), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-16 20:21:55,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 93 transitions. [2022-11-16 20:21:55,544 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 93 transitions. Word has length 12 [2022-11-16 20:21:55,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 20:21:55,547 INFO L495 AbstractCegarLoop]: Abstraction has 86 states and 93 transitions. [2022-11-16 20:21:55,548 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 20:21:55,548 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 93 transitions. [2022-11-16 20:21:55,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-16 20:21:55,548 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 20:21:55,549 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 20:21:55,566 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd38f052-e129-49b9-b885-cdbb5dcb6687/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-11-16 20:21:55,761 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd38f052-e129-49b9-b885-cdbb5dcb6687/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 20:21:55,761 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 20:21:55,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 20:21:55,762 INFO L85 PathProgramCache]: Analyzing trace with hash -13577858, now seen corresponding path program 1 times [2022-11-16 20:21:55,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-16 20:21:55,762 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1520045343] [2022-11-16 20:21:55,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:21:55,762 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 20:21:55,763 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd38f052-e129-49b9-b885-cdbb5dcb6687/bin/utaipan-Xvt2sAort0/mathsat [2022-11-16 20:21:55,764 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd38f052-e129-49b9-b885-cdbb5dcb6687/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 20:21:55,807 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd38f052-e129-49b9-b885-cdbb5dcb6687/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-11-16 20:21:55,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:21:55,839 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-16 20:21:55,840 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 20:21:55,885 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 20:21:55,886 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 20:21:55,886 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-16 20:21:55,886 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1520045343] [2022-11-16 20:21:55,886 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1520045343] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 20:21:55,886 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 20:21:55,886 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 20:21:55,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586240855] [2022-11-16 20:21:55,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 20:21:55,887 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 20:21:55,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-16 20:21:55,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 20:21:55,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 20:21:55,888 INFO L87 Difference]: Start difference. First operand 86 states and 93 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 20:21:55,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 20:21:55,923 INFO L93 Difference]: Finished difference Result 166 states and 177 transitions. [2022-11-16 20:21:55,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 20:21:55,924 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 20:21:55,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 20:21:55,925 INFO L225 Difference]: With dead ends: 166 [2022-11-16 20:21:55,925 INFO L226 Difference]: Without dead ends: 166 [2022-11-16 20:21:55,926 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 20:21:55,929 INFO L413 NwaCegarLoop]: 87 mSDtfsCounter, 126 mSDsluCounter, 171 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 258 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 20:21:55,929 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [126 Valid, 258 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 20:21:55,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2022-11-16 20:21:55,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 88. [2022-11-16 20:21:55,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 60 states have (on average 1.5) internal successors, (90), 83 states have internal predecessors, (90), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-16 20:21:55,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 95 transitions. [2022-11-16 20:21:55,940 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 95 transitions. Word has length 12 [2022-11-16 20:21:55,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 20:21:55,940 INFO L495 AbstractCegarLoop]: Abstraction has 88 states and 95 transitions. [2022-11-16 20:21:55,941 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 20:21:55,941 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 95 transitions. [2022-11-16 20:21:55,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-16 20:21:55,941 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 20:21:55,941 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 20:21:55,956 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd38f052-e129-49b9-b885-cdbb5dcb6687/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-11-16 20:21:56,156 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd38f052-e129-49b9-b885-cdbb5dcb6687/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 20:21:56,157 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-11-16 20:21:56,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 20:21:56,157 INFO L85 PathProgramCache]: Analyzing trace with hash -757624885, now seen corresponding path program 1 times [2022-11-16 20:21:56,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-16 20:21:56,158 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1545821201] [2022-11-16 20:21:56,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:21:56,158 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 20:21:56,158 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd38f052-e129-49b9-b885-cdbb5dcb6687/bin/utaipan-Xvt2sAort0/mathsat [2022-11-16 20:21:56,159 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd38f052-e129-49b9-b885-cdbb5dcb6687/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 20:21:56,198 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd38f052-e129-49b9-b885-cdbb5dcb6687/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-11-16 20:21:56,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:21:56,256 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-16 20:21:56,257 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 20:21:56,330 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 20:21:56,330 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 20:21:56,331 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-16 20:21:56,331 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1545821201] [2022-11-16 20:21:56,331 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1545821201] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 20:21:56,331 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 20:21:56,331 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 20:21:56,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934407096] [2022-11-16 20:21:56,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 20:21:56,332 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 20:21:56,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-16 20:21:56,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 20:21:56,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 20:21:56,333 INFO L87 Difference]: Start difference. First operand 88 states and 95 transitions. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 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 20:21:56,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 20:21:56,398 INFO L93 Difference]: Finished difference Result 99 states and 104 transitions. [2022-11-16 20:21:56,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 20:21:56,398 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 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 15 [2022-11-16 20:21:56,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 20:21:56,399 INFO L225 Difference]: With dead ends: 99 [2022-11-16 20:21:56,410 INFO L226 Difference]: Without dead ends: 99 [2022-11-16 20:21:56,411 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-16 20:21:56,411 INFO L413 NwaCegarLoop]: 87 mSDtfsCounter, 20 mSDsluCounter, 259 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 346 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 20:21:56,412 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 346 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 20:21:56,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2022-11-16 20:21:56,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 91. [2022-11-16 20:21:56,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 63 states have (on average 1.4761904761904763) internal successors, (93), 86 states have internal predecessors, (93), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-16 20:21:56,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 98 transitions. [2022-11-16 20:21:56,418 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 98 transitions. Word has length 15 [2022-11-16 20:21:56,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 20:21:56,418 INFO L495 AbstractCegarLoop]: Abstraction has 91 states and 98 transitions. [2022-11-16 20:21:56,418 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 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 20:21:56,418 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 98 transitions. [2022-11-16 20:21:56,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-16 20:21:56,419 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 20:21:56,419 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 20:21:56,435 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd38f052-e129-49b9-b885-cdbb5dcb6687/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-11-16 20:21:56,633 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd38f052-e129-49b9-b885-cdbb5dcb6687/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 20:21:56,633 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 20:21:56,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 20:21:56,634 INFO L85 PathProgramCache]: Analyzing trace with hash 705966087, now seen corresponding path program 1 times [2022-11-16 20:21:56,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-16 20:21:56,634 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [620805102] [2022-11-16 20:21:56,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:21:56,634 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 20:21:56,634 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd38f052-e129-49b9-b885-cdbb5dcb6687/bin/utaipan-Xvt2sAort0/mathsat [2022-11-16 20:21:56,635 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd38f052-e129-49b9-b885-cdbb5dcb6687/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 20:21:56,638 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd38f052-e129-49b9-b885-cdbb5dcb6687/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-11-16 20:21:56,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:21:56,708 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-16 20:21:56,709 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 20:21:56,735 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 20:21:56,735 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 20:21:56,735 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-16 20:21:56,736 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [620805102] [2022-11-16 20:21:56,736 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [620805102] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 20:21:56,736 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 20:21:56,736 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 20:21:56,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149745417] [2022-11-16 20:21:56,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 20:21:56,737 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 20:21:56,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-16 20:21:56,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 20:21:56,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-16 20:21:56,738 INFO L87 Difference]: Start difference. First operand 91 states and 98 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 20:21:56,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 20:21:56,763 INFO L93 Difference]: Finished difference Result 96 states and 102 transitions. [2022-11-16 20:21:56,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 20:21:56,764 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 20:21:56,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 20:21:56,765 INFO L225 Difference]: With dead ends: 96 [2022-11-16 20:21:56,765 INFO L226 Difference]: Without dead ends: 96 [2022-11-16 20:21:56,765 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 20:21:56,766 INFO L413 NwaCegarLoop]: 95 mSDtfsCounter, 69 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 188 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 20:21:56,767 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 188 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 20:21:56,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2022-11-16 20:21:56,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 92. [2022-11-16 20:21:56,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 64 states have (on average 1.46875) internal successors, (94), 87 states have internal predecessors, (94), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-16 20:21:56,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 99 transitions. [2022-11-16 20:21:56,772 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 99 transitions. Word has length 16 [2022-11-16 20:21:56,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 20:21:56,772 INFO L495 AbstractCegarLoop]: Abstraction has 92 states and 99 transitions. [2022-11-16 20:21:56,772 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 20:21:56,773 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 99 transitions. [2022-11-16 20:21:56,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-16 20:21:56,773 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 20:21:56,774 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 20:21:56,791 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd38f052-e129-49b9-b885-cdbb5dcb6687/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-11-16 20:21:56,987 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd38f052-e129-49b9-b885-cdbb5dcb6687/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 20:21:56,987 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-11-16 20:21:56,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 20:21:56,988 INFO L85 PathProgramCache]: Analyzing trace with hash 350853090, now seen corresponding path program 1 times [2022-11-16 20:21:56,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-16 20:21:56,988 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1466172469] [2022-11-16 20:21:56,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:21:56,988 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 20:21:56,988 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd38f052-e129-49b9-b885-cdbb5dcb6687/bin/utaipan-Xvt2sAort0/mathsat [2022-11-16 20:21:56,989 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd38f052-e129-49b9-b885-cdbb5dcb6687/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 20:21:56,991 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd38f052-e129-49b9-b885-cdbb5dcb6687/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-11-16 20:21:57,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:21:57,066 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 20:21:57,067 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 20:21:57,117 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 20:21:57,117 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 20:21:57,179 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 20:21:57,179 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-16 20:21:57,179 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1466172469] [2022-11-16 20:21:57,180 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1466172469] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 20:21:57,180 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1145272627] [2022-11-16 20:21:57,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:21:57,181 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-16 20:21:57,181 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd38f052-e129-49b9-b885-cdbb5dcb6687/bin/utaipan-Xvt2sAort0/cvc4 [2022-11-16 20:21:57,187 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd38f052-e129-49b9-b885-cdbb5dcb6687/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-16 20:21:57,195 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd38f052-e129-49b9-b885-cdbb5dcb6687/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt (10)] Waiting until timeout for monitored process [2022-11-16 20:21:57,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:21:57,342 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 20:21:57,344 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 20:21:57,382 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 20:21:57,382 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 20:21:57,416 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 20:21:57,416 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1145272627] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 20:21:57,416 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1498820375] [2022-11-16 20:21:57,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:21:57,417 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 20:21:57,417 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd38f052-e129-49b9-b885-cdbb5dcb6687/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 20:21:57,426 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd38f052-e129-49b9-b885-cdbb5dcb6687/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 20:21:57,427 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd38f052-e129-49b9-b885-cdbb5dcb6687/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-16 20:21:57,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:21:57,510 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-16 20:21:57,516 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 20:21:57,521 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 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 20:21:57,648 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 20:21:57,648 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 20:21:57,648 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1498820375] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 20:21:57,648 INFO L184 FreeRefinementEngine]: Found 1 perfect and 4 imperfect interpolant sequences. [2022-11-16 20:21:57,648 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [5, 5, 5, 5] total 14 [2022-11-16 20:21:57,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250202217] [2022-11-16 20:21:57,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 20:21:57,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 20:21:57,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-16 20:21:57,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 20:21:57,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2022-11-16 20:21:57,650 INFO L87 Difference]: Start difference. First operand 92 states and 99 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 20:21:58,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 20:21:58,359 INFO L93 Difference]: Finished difference Result 182 states and 192 transitions. [2022-11-16 20:21:58,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-16 20:21:58,360 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 17 [2022-11-16 20:21:58,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 20:21:58,361 INFO L225 Difference]: With dead ends: 182 [2022-11-16 20:21:58,361 INFO L226 Difference]: Without dead ends: 182 [2022-11-16 20:21:58,362 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=52, Invalid=220, Unknown=0, NotChecked=0, Total=272 [2022-11-16 20:21:58,362 INFO L413 NwaCegarLoop]: 133 mSDtfsCounter, 199 mSDsluCounter, 440 mSDsCounter, 0 mSdLazyCounter, 303 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 199 SdHoareTripleChecker+Valid, 573 SdHoareTripleChecker+Invalid, 307 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 303 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-16 20:21:58,363 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [199 Valid, 573 Invalid, 307 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 303 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-16 20:21:58,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2022-11-16 20:21:58,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 91. [2022-11-16 20:21:58,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 64 states have (on average 1.453125) internal successors, (93), 86 states have internal predecessors, (93), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-16 20:21:58,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 98 transitions. [2022-11-16 20:21:58,369 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 98 transitions. Word has length 17 [2022-11-16 20:21:58,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 20:21:58,369 INFO L495 AbstractCegarLoop]: Abstraction has 91 states and 98 transitions. [2022-11-16 20:21:58,369 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 20:21:58,369 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 98 transitions. [2022-11-16 20:21:58,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-16 20:21:58,370 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 20:21:58,370 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 20:21:58,385 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd38f052-e129-49b9-b885-cdbb5dcb6687/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-16 20:21:58,597 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd38f052-e129-49b9-b885-cdbb5dcb6687/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-11-16 20:21:58,781 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd38f052-e129-49b9-b885-cdbb5dcb6687/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt (10)] Forceful destruction successful, exit code 0 [2022-11-16 20:21:58,979 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd38f052-e129-49b9-b885-cdbb5dcb6687/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd38f052-e129-49b9-b885-cdbb5dcb6687/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd38f052-e129-49b9-b885-cdbb5dcb6687/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt [2022-11-16 20:21:58,979 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-11-16 20:21:58,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 20:21:58,980 INFO L85 PathProgramCache]: Analyzing trace with hash 350853091, now seen corresponding path program 1 times [2022-11-16 20:21:58,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-16 20:21:58,980 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1806791378] [2022-11-16 20:21:58,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:21:58,980 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 20:21:58,981 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd38f052-e129-49b9-b885-cdbb5dcb6687/bin/utaipan-Xvt2sAort0/mathsat [2022-11-16 20:21:58,982 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd38f052-e129-49b9-b885-cdbb5dcb6687/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 20:21:58,985 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd38f052-e129-49b9-b885-cdbb5dcb6687/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-11-16 20:21:59,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:21:59,071 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 20:21:59,073 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 20:21:59,116 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 20:21:59,117 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 20:21:59,182 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 20:21:59,182 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-16 20:21:59,182 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1806791378] [2022-11-16 20:21:59,182 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1806791378] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 20:21:59,183 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1975151592] [2022-11-16 20:21:59,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:21:59,183 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-16 20:21:59,183 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd38f052-e129-49b9-b885-cdbb5dcb6687/bin/utaipan-Xvt2sAort0/cvc4 [2022-11-16 20:21:59,187 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd38f052-e129-49b9-b885-cdbb5dcb6687/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-16 20:21:59,206 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd38f052-e129-49b9-b885-cdbb5dcb6687/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt (13)] Waiting until timeout for monitored process [2022-11-16 20:21:59,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:21:59,368 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 20:21:59,369 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 20:21:59,393 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 20:21:59,393 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 20:21:59,414 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 20:21:59,414 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1975151592] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 20:21:59,415 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [322481295] [2022-11-16 20:21:59,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:21:59,415 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 20:21:59,415 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd38f052-e129-49b9-b885-cdbb5dcb6687/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 20:21:59,417 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd38f052-e129-49b9-b885-cdbb5dcb6687/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 20:21:59,434 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd38f052-e129-49b9-b885-cdbb5dcb6687/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-16 20:21:59,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:21:59,538 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 20:21:59,539 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 20:21:59,559 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 20:21:59,559 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 20:21:59,583 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 20:21:59,584 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [322481295] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 20:21:59,584 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-16 20:21:59,584 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 5, 5] total 8 [2022-11-16 20:21:59,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217625778] [2022-11-16 20:21:59,585 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-16 20:21:59,585 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 20:21:59,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-16 20:21:59,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 20:21:59,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-16 20:21:59,586 INFO L87 Difference]: Start difference. First operand 91 states and 98 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 20:21:59,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 20:21:59,683 INFO L93 Difference]: Finished difference Result 98 states and 104 transitions. [2022-11-16 20:21:59,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 20:21:59,684 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 20:21:59,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 20:21:59,685 INFO L225 Difference]: With dead ends: 98 [2022-11-16 20:21:59,685 INFO L226 Difference]: Without dead ends: 98 [2022-11-16 20:21:59,685 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 90 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 20:21:59,686 INFO L413 NwaCegarLoop]: 94 mSDtfsCounter, 71 mSDsluCounter, 330 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 424 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 20:21:59,686 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 424 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 20:21:59,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2022-11-16 20:21:59,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 94. [2022-11-16 20:21:59,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 67 states have (on average 1.4328358208955223) internal successors, (96), 89 states have internal predecessors, (96), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-16 20:21:59,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 101 transitions. [2022-11-16 20:21:59,691 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 101 transitions. Word has length 17 [2022-11-16 20:21:59,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 20:21:59,692 INFO L495 AbstractCegarLoop]: Abstraction has 94 states and 101 transitions. [2022-11-16 20:21:59,692 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 20:21:59,692 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 101 transitions. [2022-11-16 20:21:59,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-16 20:21:59,693 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 20:21:59,693 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 20:21:59,707 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd38f052-e129-49b9-b885-cdbb5dcb6687/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-11-16 20:21:59,902 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd38f052-e129-49b9-b885-cdbb5dcb6687/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2022-11-16 20:22:00,095 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd38f052-e129-49b9-b885-cdbb5dcb6687/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt (13)] Ended with exit code 0 [2022-11-16 20:22:00,294 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd38f052-e129-49b9-b885-cdbb5dcb6687/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd38f052-e129-49b9-b885-cdbb5dcb6687/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd38f052-e129-49b9-b885-cdbb5dcb6687/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt [2022-11-16 20:22:00,294 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-11-16 20:22:00,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 20:22:00,295 INFO L85 PathProgramCache]: Analyzing trace with hash 2068405965, now seen corresponding path program 1 times [2022-11-16 20:22:00,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-16 20:22:00,295 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [43801161] [2022-11-16 20:22:00,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:22:00,295 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 20:22:00,296 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd38f052-e129-49b9-b885-cdbb5dcb6687/bin/utaipan-Xvt2sAort0/mathsat [2022-11-16 20:22:00,304 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd38f052-e129-49b9-b885-cdbb5dcb6687/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 20:22:00,305 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd38f052-e129-49b9-b885-cdbb5dcb6687/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2022-11-16 20:22:00,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:22:00,365 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 20:22:00,367 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 20:22:00,410 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 20:22:00,411 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 20:22:00,411 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-16 20:22:00,411 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [43801161] [2022-11-16 20:22:00,411 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [43801161] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 20:22:00,412 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 20:22:00,412 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 20:22:00,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683107830] [2022-11-16 20:22:00,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 20:22:00,413 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 20:22:00,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-16 20:22:00,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 20:22:00,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 20:22:00,414 INFO L87 Difference]: Start difference. First operand 94 states and 101 transitions. Second operand has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 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 20:22:00,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 20:22:00,582 INFO L93 Difference]: Finished difference Result 97 states and 103 transitions. [2022-11-16 20:22:00,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 20:22:00,583 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 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 17 [2022-11-16 20:22:00,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 20:22:00,584 INFO L225 Difference]: With dead ends: 97 [2022-11-16 20:22:00,584 INFO L226 Difference]: Without dead ends: 85 [2022-11-16 20:22:00,584 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 14 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 20:22:00,585 INFO L413 NwaCegarLoop]: 82 mSDtfsCounter, 8 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 195 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 20:22:00,585 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 195 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-16 20:22:00,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2022-11-16 20:22:00,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2022-11-16 20:22:00,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 59 states have (on average 1.4745762711864407) internal successors, (87), 81 states have internal predecessors, (87), 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 20:22:00,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 91 transitions. [2022-11-16 20:22:00,588 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 91 transitions. Word has length 17 [2022-11-16 20:22:00,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 20:22:00,588 INFO L495 AbstractCegarLoop]: Abstraction has 85 states and 91 transitions. [2022-11-16 20:22:00,589 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 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 20:22:00,589 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 91 transitions. [2022-11-16 20:22:00,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-16 20:22:00,589 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 20:22:00,589 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 20:22:00,611 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd38f052-e129-49b9-b885-cdbb5dcb6687/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2022-11-16 20:22:00,790 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd38f052-e129-49b9-b885-cdbb5dcb6687/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 20:22:00,790 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-11-16 20:22:00,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 20:22:00,791 INFO L85 PathProgramCache]: Analyzing trace with hash -400765240, now seen corresponding path program 2 times [2022-11-16 20:22:00,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-16 20:22:00,791 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1656928336] [2022-11-16 20:22:00,791 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 20:22:00,791 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 20:22:00,791 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd38f052-e129-49b9-b885-cdbb5dcb6687/bin/utaipan-Xvt2sAort0/mathsat [2022-11-16 20:22:00,792 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd38f052-e129-49b9-b885-cdbb5dcb6687/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 20:22:00,796 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd38f052-e129-49b9-b885-cdbb5dcb6687/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2022-11-16 20:22:00,883 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-16 20:22:00,883 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 20:22:00,886 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-16 20:22:00,889 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 20:22:00,921 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 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 20:22:01,142 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 20:22:01,142 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 20:22:01,142 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-16 20:22:01,143 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1656928336] [2022-11-16 20:22:01,143 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1656928336] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 20:22:01,143 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 20:22:01,143 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-16 20:22:01,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376825764] [2022-11-16 20:22:01,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 20:22:01,144 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-16 20:22:01,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-16 20:22:01,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-16 20:22:01,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-16 20:22:01,145 INFO L87 Difference]: Start difference. First operand 85 states and 91 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 20:22:02,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 20:22:02,017 INFO L93 Difference]: Finished difference Result 189 states and 201 transitions. [2022-11-16 20:22:02,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 20:22:02,018 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 20 [2022-11-16 20:22:02,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 20:22:02,019 INFO L225 Difference]: With dead ends: 189 [2022-11-16 20:22:02,019 INFO L226 Difference]: Without dead ends: 189 [2022-11-16 20:22:02,019 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 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 20:22:02,020 INFO L413 NwaCegarLoop]: 153 mSDtfsCounter, 245 mSDsluCounter, 610 mSDsCounter, 0 mSdLazyCounter, 273 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 245 SdHoareTripleChecker+Valid, 763 SdHoareTripleChecker+Invalid, 277 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 273 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-16 20:22:02,020 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [245 Valid, 763 Invalid, 277 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 273 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-16 20:22:02,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2022-11-16 20:22:02,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 84. [2022-11-16 20:22:02,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 59 states have (on average 1.4576271186440677) internal successors, (86), 80 states have internal predecessors, (86), 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 20:22:02,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 90 transitions. [2022-11-16 20:22:02,025 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 90 transitions. Word has length 20 [2022-11-16 20:22:02,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 20:22:02,026 INFO L495 AbstractCegarLoop]: Abstraction has 84 states and 90 transitions. [2022-11-16 20:22:02,026 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 20:22:02,027 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 90 transitions. [2022-11-16 20:22:02,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-11-16 20:22:02,027 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 20:22:02,028 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 20:22:02,042 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd38f052-e129-49b9-b885-cdbb5dcb6687/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2022-11-16 20:22:02,228 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd38f052-e129-49b9-b885-cdbb5dcb6687/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 20:22:02,228 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-11-16 20:22:02,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 20:22:02,229 INFO L85 PathProgramCache]: Analyzing trace with hash 1410152967, now seen corresponding path program 1 times [2022-11-16 20:22:02,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-16 20:22:02,229 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [784337049] [2022-11-16 20:22:02,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:22:02,230 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 20:22:02,230 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd38f052-e129-49b9-b885-cdbb5dcb6687/bin/utaipan-Xvt2sAort0/mathsat [2022-11-16 20:22:02,231 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd38f052-e129-49b9-b885-cdbb5dcb6687/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 20:22:02,237 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd38f052-e129-49b9-b885-cdbb5dcb6687/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2022-11-16 20:22:02,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:22:02,366 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-16 20:22:02,368 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 20:22:02,477 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 20:22:02,477 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 20:22:02,715 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 20:22:02,716 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-16 20:22:02,716 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [784337049] [2022-11-16 20:22:02,716 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [784337049] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 20:22:02,716 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1564998043] [2022-11-16 20:22:02,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:22:02,716 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-16 20:22:02,716 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd38f052-e129-49b9-b885-cdbb5dcb6687/bin/utaipan-Xvt2sAort0/cvc4 [2022-11-16 20:22:02,717 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd38f052-e129-49b9-b885-cdbb5dcb6687/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-16 20:22:02,724 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd38f052-e129-49b9-b885-cdbb5dcb6687/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt (18)] Waiting until timeout for monitored process [2022-11-16 20:22:02,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:22:02,891 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-16 20:22:02,892 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 20:22:03,003 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 20:22:03,003 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 20:22:03,003 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1564998043] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 20:22:03,003 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-16 20:22:03,003 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8, 8] total 18 [2022-11-16 20:22:03,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985460020] [2022-11-16 20:22:03,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 20:22:03,004 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 20:22:03,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-16 20:22:03,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 20:22:03,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=237, Unknown=0, NotChecked=0, Total=306 [2022-11-16 20:22:03,005 INFO L87 Difference]: Start difference. First operand 84 states and 90 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 20:22:03,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 20:22:03,058 INFO L93 Difference]: Finished difference Result 84 states and 89 transitions. [2022-11-16 20:22:03,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 20:22:03,059 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 22 [2022-11-16 20:22:03,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 20:22:03,059 INFO L225 Difference]: With dead ends: 84 [2022-11-16 20:22:03,059 INFO L226 Difference]: Without dead ends: 84 [2022-11-16 20:22:03,060 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=269, Unknown=0, NotChecked=0, Total=342 [2022-11-16 20:22:03,060 INFO L413 NwaCegarLoop]: 80 mSDtfsCounter, 123 mSDsluCounter, 190 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 270 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 20:22:03,061 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [123 Valid, 270 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 20:22:03,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2022-11-16 20:22:03,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84. [2022-11-16 20:22:03,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 59 states have (on average 1.4406779661016949) internal successors, (85), 80 states have internal predecessors, (85), 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 20:22:03,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 89 transitions. [2022-11-16 20:22:03,064 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 89 transitions. Word has length 22 [2022-11-16 20:22:03,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 20:22:03,066 INFO L495 AbstractCegarLoop]: Abstraction has 84 states and 89 transitions. [2022-11-16 20:22:03,067 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 20:22:03,067 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 89 transitions. [2022-11-16 20:22:03,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-16 20:22:03,069 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 20:22:03,070 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 20:22:03,086 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd38f052-e129-49b9-b885-cdbb5dcb6687/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2022-11-16 20:22:03,272 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd38f052-e129-49b9-b885-cdbb5dcb6687/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt (18)] Forceful destruction successful, exit code 0 [2022-11-16 20:22:03,470 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd38f052-e129-49b9-b885-cdbb5dcb6687/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd38f052-e129-49b9-b885-cdbb5dcb6687/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt [2022-11-16 20:22:03,470 INFO L420 AbstractCegarLoop]: === Iteration 13 === 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 20:22:03,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 20:22:03,471 INFO L85 PathProgramCache]: Analyzing trace with hash -603900661, now seen corresponding path program 1 times [2022-11-16 20:22:03,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-16 20:22:03,471 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [693402929] [2022-11-16 20:22:03,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:22:03,472 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 20:22:03,472 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd38f052-e129-49b9-b885-cdbb5dcb6687/bin/utaipan-Xvt2sAort0/mathsat [2022-11-16 20:22:03,473 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd38f052-e129-49b9-b885-cdbb5dcb6687/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 20:22:03,485 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd38f052-e129-49b9-b885-cdbb5dcb6687/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2022-11-16 20:22:03,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:22:03,595 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-16 20:22:03,605 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 20:22:03,700 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 20:22:03,700 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 20:22:03,923 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 20:22:03,924 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-16 20:22:03,924 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [693402929] [2022-11-16 20:22:03,924 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [693402929] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 20:22:03,924 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1244348784] [2022-11-16 20:22:03,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:22:03,925 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-16 20:22:03,925 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd38f052-e129-49b9-b885-cdbb5dcb6687/bin/utaipan-Xvt2sAort0/cvc4 [2022-11-16 20:22:03,926 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd38f052-e129-49b9-b885-cdbb5dcb6687/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-16 20:22:03,937 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd38f052-e129-49b9-b885-cdbb5dcb6687/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt (20)] Waiting until timeout for monitored process [2022-11-16 20:22:04,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:22:04,166 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-16 20:22:04,167 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 20:22:04,211 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 20:22:04,211 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 20:22:04,247 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 20:22:04,247 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1244348784] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 20:22:04,247 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1411227749] [2022-11-16 20:22:04,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:22:04,248 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 20:22:04,248 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd38f052-e129-49b9-b885-cdbb5dcb6687/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 20:22:04,249 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd38f052-e129-49b9-b885-cdbb5dcb6687/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 20:22:04,280 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd38f052-e129-49b9-b885-cdbb5dcb6687/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-11-16 20:22:04,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:22:04,398 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-16 20:22:04,400 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 20:22:04,408 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 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 20:22:04,633 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 20:22:04,634 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 20:22:04,634 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1411227749] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 20:22:04,634 INFO L184 FreeRefinementEngine]: Found 1 perfect and 4 imperfect interpolant sequences. [2022-11-16 20:22:04,634 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8, 8, 8, 8] total 21 [2022-11-16 20:22:04,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129349678] [2022-11-16 20:22:04,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 20:22:04,635 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-16 20:22:04,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-16 20:22:04,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-16 20:22:04,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=345, Unknown=0, NotChecked=0, Total=420 [2022-11-16 20:22:04,636 INFO L87 Difference]: Start difference. First operand 84 states and 89 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 20:22:05,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 20:22:05,085 INFO L93 Difference]: Finished difference Result 88 states and 92 transitions. [2022-11-16 20:22:05,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 20:22:05,086 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 24 [2022-11-16 20:22:05,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 20:22:05,087 INFO L225 Difference]: With dead ends: 88 [2022-11-16 20:22:05,087 INFO L226 Difference]: Without dead ends: 88 [2022-11-16 20:22:05,087 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 129 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=89, Invalid=463, Unknown=0, NotChecked=0, Total=552 [2022-11-16 20:22:05,088 INFO L413 NwaCegarLoop]: 54 mSDtfsCounter, 155 mSDsluCounter, 240 mSDsCounter, 0 mSdLazyCounter, 211 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 155 SdHoareTripleChecker+Valid, 294 SdHoareTripleChecker+Invalid, 215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 211 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-16 20:22:05,088 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [155 Valid, 294 Invalid, 215 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 211 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-16 20:22:05,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2022-11-16 20:22:05,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 82. [2022-11-16 20:22:05,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 59 states have (on average 1.4067796610169492) internal successors, (83), 78 states have internal predecessors, (83), 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 20:22:05,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 87 transitions. [2022-11-16 20:22:05,091 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 87 transitions. Word has length 24 [2022-11-16 20:22:05,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 20:22:05,095 INFO L495 AbstractCegarLoop]: Abstraction has 82 states and 87 transitions. [2022-11-16 20:22:05,095 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 20:22:05,095 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 87 transitions. [2022-11-16 20:22:05,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-16 20:22:05,097 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 20:22:05,098 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 20:22:05,101 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd38f052-e129-49b9-b885-cdbb5dcb6687/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt (20)] Ended with exit code 0 [2022-11-16 20:22:05,306 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd38f052-e129-49b9-b885-cdbb5dcb6687/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2022-11-16 20:22:05,503 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd38f052-e129-49b9-b885-cdbb5dcb6687/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-11-16 20:22:05,698 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd38f052-e129-49b9-b885-cdbb5dcb6687/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd38f052-e129-49b9-b885-cdbb5dcb6687/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd38f052-e129-49b9-b885-cdbb5dcb6687/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 20:22:05,699 INFO L420 AbstractCegarLoop]: === Iteration 14 === 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 20:22:05,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 20:22:05,699 INFO L85 PathProgramCache]: Analyzing trace with hash -603900660, now seen corresponding path program 1 times [2022-11-16 20:22:05,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-16 20:22:05,699 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1305385466] [2022-11-16 20:22:05,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:22:05,700 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 20:22:05,700 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd38f052-e129-49b9-b885-cdbb5dcb6687/bin/utaipan-Xvt2sAort0/mathsat [2022-11-16 20:22:05,700 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd38f052-e129-49b9-b885-cdbb5dcb6687/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 20:22:05,703 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd38f052-e129-49b9-b885-cdbb5dcb6687/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2022-11-16 20:22:05,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:22:05,823 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-16 20:22:05,824 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 20:22:05,916 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 20:22:05,916 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 20:22:06,113 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 20:22:06,113 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-16 20:22:06,113 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1305385466] [2022-11-16 20:22:06,114 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1305385466] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 20:22:06,114 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [250424127] [2022-11-16 20:22:06,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:22:06,114 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-16 20:22:06,114 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd38f052-e129-49b9-b885-cdbb5dcb6687/bin/utaipan-Xvt2sAort0/cvc4 [2022-11-16 20:22:06,115 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd38f052-e129-49b9-b885-cdbb5dcb6687/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-16 20:22:06,117 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd38f052-e129-49b9-b885-cdbb5dcb6687/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt (23)] Waiting until timeout for monitored process [2022-11-16 20:22:06,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:22:06,343 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-16 20:22:06,345 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 20:22:06,394 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 20:22:06,395 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 20:22:06,427 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 20:22:06,427 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [250424127] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 20:22:06,427 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1684360941] [2022-11-16 20:22:06,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:22:06,428 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 20:22:06,428 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd38f052-e129-49b9-b885-cdbb5dcb6687/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 20:22:06,429 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd38f052-e129-49b9-b885-cdbb5dcb6687/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 20:22:06,458 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd38f052-e129-49b9-b885-cdbb5dcb6687/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-11-16 20:22:06,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:22:06,586 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 22 conjunts are in the unsatisfiable core [2022-11-16 20:22:06,588 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 20:22:06,630 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 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 20:22:06,981 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 20:22:06,982 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 20:22:06,982 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1684360941] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 20:22:06,982 INFO L184 FreeRefinementEngine]: Found 1 perfect and 4 imperfect interpolant sequences. [2022-11-16 20:22:06,982 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [8, 8, 8, 8] total 22 [2022-11-16 20:22:06,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50876913] [2022-11-16 20:22:06,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 20:22:06,983 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 20:22:06,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-16 20:22:06,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 20:22:06,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=385, Unknown=0, NotChecked=0, Total=462 [2022-11-16 20:22:06,984 INFO L87 Difference]: Start difference. First operand 82 states and 87 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 20:22:07,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 20:22:07,568 INFO L93 Difference]: Finished difference Result 80 states and 85 transitions. [2022-11-16 20:22:07,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-16 20:22:07,569 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 24 [2022-11-16 20:22:07,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 20:22:07,570 INFO L225 Difference]: With dead ends: 80 [2022-11-16 20:22:07,570 INFO L226 Difference]: Without dead ends: 80 [2022-11-16 20:22:07,571 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=95, Invalid=555, Unknown=0, NotChecked=0, Total=650 [2022-11-16 20:22:07,572 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 189 mSDsluCounter, 282 mSDsCounter, 0 mSdLazyCounter, 182 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 189 SdHoareTripleChecker+Valid, 338 SdHoareTripleChecker+Invalid, 186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-16 20:22:07,572 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [189 Valid, 338 Invalid, 186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 182 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-16 20:22:07,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2022-11-16 20:22:07,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2022-11-16 20:22:07,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 59 states have (on average 1.3728813559322033) internal successors, (81), 76 states have internal predecessors, (81), 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 20:22:07,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 85 transitions. [2022-11-16 20:22:07,576 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 85 transitions. Word has length 24 [2022-11-16 20:22:07,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 20:22:07,577 INFO L495 AbstractCegarLoop]: Abstraction has 80 states and 85 transitions. [2022-11-16 20:22:07,577 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 20:22:07,577 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 85 transitions. [2022-11-16 20:22:07,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-16 20:22:07,578 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 20:22:07,578 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 20:22:07,594 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd38f052-e129-49b9-b885-cdbb5dcb6687/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2022-11-16 20:22:07,794 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd38f052-e129-49b9-b885-cdbb5dcb6687/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt (23)] Ended with exit code 0 [2022-11-16 20:22:07,998 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd38f052-e129-49b9-b885-cdbb5dcb6687/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2022-11-16 20:22:08,193 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd38f052-e129-49b9-b885-cdbb5dcb6687/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd38f052-e129-49b9-b885-cdbb5dcb6687/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd38f052-e129-49b9-b885-cdbb5dcb6687/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 20:22:08,193 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-11-16 20:22:08,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 20:22:08,194 INFO L85 PathProgramCache]: Analyzing trace with hash -654605517, now seen corresponding path program 1 times [2022-11-16 20:22:08,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-16 20:22:08,194 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [667573923] [2022-11-16 20:22:08,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:22:08,194 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 20:22:08,195 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd38f052-e129-49b9-b885-cdbb5dcb6687/bin/utaipan-Xvt2sAort0/mathsat [2022-11-16 20:22:08,195 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd38f052-e129-49b9-b885-cdbb5dcb6687/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 20:22:08,197 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd38f052-e129-49b9-b885-cdbb5dcb6687/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2022-11-16 20:22:08,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:22:08,299 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-16 20:22:08,300 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 20:22:08,383 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 20:22:08,383 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 20:22:08,600 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 20:22:08,601 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-16 20:22:08,601 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [667573923] [2022-11-16 20:22:08,601 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [667573923] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 20:22:08,601 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [349082894] [2022-11-16 20:22:08,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:22:08,601 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-16 20:22:08,601 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd38f052-e129-49b9-b885-cdbb5dcb6687/bin/utaipan-Xvt2sAort0/cvc4 [2022-11-16 20:22:08,603 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd38f052-e129-49b9-b885-cdbb5dcb6687/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-16 20:22:08,610 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd38f052-e129-49b9-b885-cdbb5dcb6687/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt (26)] Waiting until timeout for monitored process [2022-11-16 20:22:08,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:22:08,767 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-16 20:22:08,784 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 20:22:08,913 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 20:22:08,913 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 20:22:08,913 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [349082894] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 20:22:08,913 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-16 20:22:08,914 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8, 8] total 19 [2022-11-16 20:22:08,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663998416] [2022-11-16 20:22:08,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 20:22:08,914 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 20:22:08,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-16 20:22:08,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 20:22:08,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=271, Unknown=0, NotChecked=0, Total=342 [2022-11-16 20:22:08,915 INFO L87 Difference]: Start difference. First operand 80 states and 85 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 20:22:08,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 20:22:08,996 INFO L93 Difference]: Finished difference Result 80 states and 84 transitions. [2022-11-16 20:22:08,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 20:22:08,997 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 24 [2022-11-16 20:22:08,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 20:22:08,997 INFO L225 Difference]: With dead ends: 80 [2022-11-16 20:22:08,998 INFO L226 Difference]: Without dead ends: 80 [2022-11-16 20:22:08,998 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=81, Invalid=339, Unknown=0, NotChecked=0, Total=420 [2022-11-16 20:22:09,000 INFO L413 NwaCegarLoop]: 74 mSDtfsCounter, 180 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 180 SdHoareTripleChecker+Valid, 255 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 20:22:09,001 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [180 Valid, 255 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 20:22:09,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2022-11-16 20:22:09,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2022-11-16 20:22:09,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 59 states have (on average 1.3559322033898304) internal successors, (80), 75 states have internal predecessors, (80), 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 20:22:09,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 84 transitions. [2022-11-16 20:22:09,004 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 84 transitions. Word has length 24 [2022-11-16 20:22:09,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 20:22:09,005 INFO L495 AbstractCegarLoop]: Abstraction has 80 states and 84 transitions. [2022-11-16 20:22:09,005 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 20:22:09,005 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 84 transitions. [2022-11-16 20:22:09,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-11-16 20:22:09,006 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 20:22:09,006 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 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 20:22:09,009 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd38f052-e129-49b9-b885-cdbb5dcb6687/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt (26)] Forceful destruction successful, exit code 0 [2022-11-16 20:22:09,216 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd38f052-e129-49b9-b885-cdbb5dcb6687/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Ended with exit code 0 [2022-11-16 20:22:09,409 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd38f052-e129-49b9-b885-cdbb5dcb6687/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd38f052-e129-49b9-b885-cdbb5dcb6687/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 20:22:09,409 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-11-16 20:22:09,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 20:22:09,409 INFO L85 PathProgramCache]: Analyzing trace with hash -2124151888, now seen corresponding path program 1 times [2022-11-16 20:22:09,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-16 20:22:09,410 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1644060670] [2022-11-16 20:22:09,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:22:09,410 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 20:22:09,410 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd38f052-e129-49b9-b885-cdbb5dcb6687/bin/utaipan-Xvt2sAort0/mathsat [2022-11-16 20:22:09,411 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd38f052-e129-49b9-b885-cdbb5dcb6687/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 20:22:09,412 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd38f052-e129-49b9-b885-cdbb5dcb6687/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2022-11-16 20:22:09,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:22:09,556 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-16 20:22:09,557 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 20:22:09,653 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 20:22:09,653 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 20:22:09,868 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 20:22:09,868 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-16 20:22:09,868 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1644060670] [2022-11-16 20:22:09,868 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1644060670] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 20:22:09,869 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1926680560] [2022-11-16 20:22:09,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:22:09,869 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-16 20:22:09,869 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd38f052-e129-49b9-b885-cdbb5dcb6687/bin/utaipan-Xvt2sAort0/cvc4 [2022-11-16 20:22:09,875 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd38f052-e129-49b9-b885-cdbb5dcb6687/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-16 20:22:09,876 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd38f052-e129-49b9-b885-cdbb5dcb6687/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt (28)] Waiting until timeout for monitored process [2022-11-16 20:22:10,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:22:10,111 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-16 20:22:10,112 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 20:22:10,171 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 20:22:10,171 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 20:22:10,219 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 20:22:10,219 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1926680560] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 20:22:10,220 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [786793846] [2022-11-16 20:22:10,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:22:10,220 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 20:22:10,220 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd38f052-e129-49b9-b885-cdbb5dcb6687/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 20:22:10,222 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd38f052-e129-49b9-b885-cdbb5dcb6687/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 20:22:10,243 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd38f052-e129-49b9-b885-cdbb5dcb6687/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2022-11-16 20:22:10,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:22:10,403 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-16 20:22:10,405 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 20:22:10,410 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-16 20:22:10,731 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 20:22:10,731 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 20:22:10,731 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [786793846] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 20:22:10,731 INFO L184 FreeRefinementEngine]: Found 1 perfect and 4 imperfect interpolant sequences. [2022-11-16 20:22:10,732 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8, 8, 8, 8] total 21 [2022-11-16 20:22:10,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208255526] [2022-11-16 20:22:10,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 20:22:10,732 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-16 20:22:10,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-16 20:22:10,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-16 20:22:10,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=339, Unknown=0, NotChecked=0, Total=420 [2022-11-16 20:22:10,733 INFO L87 Difference]: Start difference. First operand 80 states and 84 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 20:22:11,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 20:22:11,203 INFO L93 Difference]: Finished difference Result 113 states and 117 transitions. [2022-11-16 20:22:11,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 20:22:11,204 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 32 [2022-11-16 20:22:11,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 20:22:11,205 INFO L225 Difference]: With dead ends: 113 [2022-11-16 20:22:11,205 INFO L226 Difference]: Without dead ends: 113 [2022-11-16 20:22:11,205 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 135 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 143 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=102, Invalid=450, Unknown=0, NotChecked=0, Total=552 [2022-11-16 20:22:11,206 INFO L413 NwaCegarLoop]: 71 mSDtfsCounter, 211 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 211 SdHoareTripleChecker+Valid, 252 SdHoareTripleChecker+Invalid, 157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 11 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-16 20:22:11,206 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [211 Valid, 252 Invalid, 157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 145 Invalid, 0 Unknown, 11 Unchecked, 0.4s Time] [2022-11-16 20:22:11,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2022-11-16 20:22:11,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 78. [2022-11-16 20:22:11,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 59 states have (on average 1.3220338983050848) internal successors, (78), 73 states have internal predecessors, (78), 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 20:22:11,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 82 transitions. [2022-11-16 20:22:11,210 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 82 transitions. Word has length 32 [2022-11-16 20:22:11,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 20:22:11,210 INFO L495 AbstractCegarLoop]: Abstraction has 78 states and 82 transitions. [2022-11-16 20:22:11,210 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 20:22:11,210 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 82 transitions. [2022-11-16 20:22:11,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-11-16 20:22:11,211 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 20:22:11,211 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 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 20:22:11,219 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd38f052-e129-49b9-b885-cdbb5dcb6687/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt (28)] Forceful destruction successful, exit code 0 [2022-11-16 20:22:11,419 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd38f052-e129-49b9-b885-cdbb5dcb6687/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2022-11-16 20:22:11,623 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd38f052-e129-49b9-b885-cdbb5dcb6687/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Ended with exit code 0 [2022-11-16 20:22:11,815 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd38f052-e129-49b9-b885-cdbb5dcb6687/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt,29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd38f052-e129-49b9-b885-cdbb5dcb6687/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd38f052-e129-49b9-b885-cdbb5dcb6687/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 20:22:11,815 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-11-16 20:22:11,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 20:22:11,815 INFO L85 PathProgramCache]: Analyzing trace with hash -2124151887, now seen corresponding path program 1 times [2022-11-16 20:22:11,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-16 20:22:11,816 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [712367666] [2022-11-16 20:22:11,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:22:11,816 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 20:22:11,816 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd38f052-e129-49b9-b885-cdbb5dcb6687/bin/utaipan-Xvt2sAort0/mathsat [2022-11-16 20:22:11,817 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd38f052-e129-49b9-b885-cdbb5dcb6687/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 20:22:11,818 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd38f052-e129-49b9-b885-cdbb5dcb6687/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2022-11-16 20:22:12,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:22:12,020 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-16 20:22:12,021 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 20:22:12,132 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 20:22:12,132 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 20:22:12,390 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 20:22:12,391 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-16 20:22:12,391 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [712367666] [2022-11-16 20:22:12,391 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [712367666] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 20:22:12,391 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [236329706] [2022-11-16 20:22:12,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:22:12,392 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-16 20:22:12,392 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd38f052-e129-49b9-b885-cdbb5dcb6687/bin/utaipan-Xvt2sAort0/cvc4 [2022-11-16 20:22:12,395 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd38f052-e129-49b9-b885-cdbb5dcb6687/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-16 20:22:12,397 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd38f052-e129-49b9-b885-cdbb5dcb6687/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt (31)] Waiting until timeout for monitored process [2022-11-16 20:22:12,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:22:12,658 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-16 20:22:12,660 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 20:22:12,700 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 20:22:12,700 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 20:22:12,736 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 20:22:12,736 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [236329706] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 20:22:12,737 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1661829515] [2022-11-16 20:22:12,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:22:12,737 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 20:22:12,737 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd38f052-e129-49b9-b885-cdbb5dcb6687/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 20:22:12,738 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd38f052-e129-49b9-b885-cdbb5dcb6687/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 20:22:12,758 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd38f052-e129-49b9-b885-cdbb5dcb6687/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2022-11-16 20:22:12,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:22:12,918 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 26 conjunts are in the unsatisfiable core [2022-11-16 20:22:12,920 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 20:22:12,952 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 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 20:22:13,421 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 20:22:13,421 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 20:22:13,421 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1661829515] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 20:22:13,421 INFO L184 FreeRefinementEngine]: Found 1 perfect and 4 imperfect interpolant sequences. [2022-11-16 20:22:13,421 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [8, 8, 8, 8] total 22 [2022-11-16 20:22:13,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110455061] [2022-11-16 20:22:13,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 20:22:13,422 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 20:22:13,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-16 20:22:13,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 20:22:13,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=380, Unknown=0, NotChecked=0, Total=462 [2022-11-16 20:22:13,423 INFO L87 Difference]: Start difference. First operand 78 states and 82 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 20:22:13,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 20:22:13,990 INFO L93 Difference]: Finished difference Result 115 states and 121 transitions. [2022-11-16 20:22:13,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-16 20:22:13,991 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 32 [2022-11-16 20:22:13,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 20:22:13,992 INFO L225 Difference]: With dead ends: 115 [2022-11-16 20:22:13,992 INFO L226 Difference]: Without dead ends: 115 [2022-11-16 20:22:13,992 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 134 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 165 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=107, Invalid=543, Unknown=0, NotChecked=0, Total=650 [2022-11-16 20:22:13,993 INFO L413 NwaCegarLoop]: 87 mSDtfsCounter, 211 mSDsluCounter, 331 mSDsCounter, 0 mSdLazyCounter, 157 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 211 SdHoareTripleChecker+Valid, 418 SdHoareTripleChecker+Invalid, 164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 6 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-16 20:22:13,993 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [211 Valid, 418 Invalid, 164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 157 Invalid, 0 Unknown, 6 Unchecked, 0.4s Time] [2022-11-16 20:22:13,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2022-11-16 20:22:13,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 76. [2022-11-16 20:22:13,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 59 states have (on average 1.2881355932203389) internal successors, (76), 71 states have internal predecessors, (76), 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 20:22:13,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 80 transitions. [2022-11-16 20:22:13,996 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 80 transitions. Word has length 32 [2022-11-16 20:22:13,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 20:22:13,996 INFO L495 AbstractCegarLoop]: Abstraction has 76 states and 80 transitions. [2022-11-16 20:22:13,996 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 20:22:13,997 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 80 transitions. [2022-11-16 20:22:13,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-11-16 20:22:13,997 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 20:22:13,997 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 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 20:22:14,008 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd38f052-e129-49b9-b885-cdbb5dcb6687/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt (31)] Forceful destruction successful, exit code 0 [2022-11-16 20:22:14,204 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd38f052-e129-49b9-b885-cdbb5dcb6687/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2022-11-16 20:22:14,407 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd38f052-e129-49b9-b885-cdbb5dcb6687/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (30)] Ended with exit code 0 [2022-11-16 20:22:14,598 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd38f052-e129-49b9-b885-cdbb5dcb6687/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt,32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd38f052-e129-49b9-b885-cdbb5dcb6687/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd38f052-e129-49b9-b885-cdbb5dcb6687/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 20:22:14,598 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-11-16 20:22:14,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 20:22:14,599 INFO L85 PathProgramCache]: Analyzing trace with hash 1452660825, now seen corresponding path program 1 times [2022-11-16 20:22:14,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-16 20:22:14,600 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [169542249] [2022-11-16 20:22:14,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:22:14,600 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 20:22:14,600 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd38f052-e129-49b9-b885-cdbb5dcb6687/bin/utaipan-Xvt2sAort0/mathsat [2022-11-16 20:22:14,601 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd38f052-e129-49b9-b885-cdbb5dcb6687/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 20:22:14,622 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd38f052-e129-49b9-b885-cdbb5dcb6687/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (33)] Waiting until timeout for monitored process [2022-11-16 20:22:14,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:22:14,814 INFO L263 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-16 20:22:14,816 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 20:22:14,920 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 20:22:14,921 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 20:22:15,164 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 20:22:15,164 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-16 20:22:15,164 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [169542249] [2022-11-16 20:22:15,165 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [169542249] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 20:22:15,165 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1837244161] [2022-11-16 20:22:15,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:22:15,165 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-16 20:22:15,165 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd38f052-e129-49b9-b885-cdbb5dcb6687/bin/utaipan-Xvt2sAort0/cvc4 [2022-11-16 20:22:15,166 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd38f052-e129-49b9-b885-cdbb5dcb6687/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-16 20:22:15,168 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd38f052-e129-49b9-b885-cdbb5dcb6687/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt (34)] Waiting until timeout for monitored process [2022-11-16 20:22:15,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:22:15,443 INFO L263 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-16 20:22:15,445 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 20:22:15,611 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 20:22:15,612 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 20:22:15,612 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1837244161] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 20:22:15,612 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-16 20:22:15,612 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8, 8] total 19 [2022-11-16 20:22:15,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169600066] [2022-11-16 20:22:15,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 20:22:15,613 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 20:22:15,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-16 20:22:15,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 20:22:15,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=271, Unknown=0, NotChecked=0, Total=342 [2022-11-16 20:22:15,614 INFO L87 Difference]: Start difference. First operand 76 states and 80 transitions. Second operand has 7 states, 7 states have (on average 4.0) internal successors, (28), 6 states have internal predecessors, (28), 2 states have call successors, (2), 1 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 20:22:15,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 20:22:15,716 INFO L93 Difference]: Finished difference Result 76 states and 79 transitions. [2022-11-16 20:22:15,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 20:22:15,717 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.0) internal successors, (28), 6 states have internal predecessors, (28), 2 states have call successors, (2), 1 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 35 [2022-11-16 20:22:15,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 20:22:15,718 INFO L225 Difference]: With dead ends: 76 [2022-11-16 20:22:15,718 INFO L226 Difference]: Without dead ends: 76 [2022-11-16 20:22:15,719 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=81, Invalid=339, Unknown=0, NotChecked=0, Total=420 [2022-11-16 20:22:15,719 INFO L413 NwaCegarLoop]: 68 mSDtfsCounter, 147 mSDsluCounter, 185 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 253 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 20:22:15,720 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [147 Valid, 253 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 20:22:15,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2022-11-16 20:22:15,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2022-11-16 20:22:15,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 59 states have (on average 1.271186440677966) internal successors, (75), 71 states have internal predecessors, (75), 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 20:22:15,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 79 transitions. [2022-11-16 20:22:15,724 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 79 transitions. Word has length 35 [2022-11-16 20:22:15,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 20:22:15,725 INFO L495 AbstractCegarLoop]: Abstraction has 76 states and 79 transitions. [2022-11-16 20:22:15,726 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.0) internal successors, (28), 6 states have internal predecessors, (28), 2 states have call successors, (2), 1 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 20:22:15,726 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 79 transitions. [2022-11-16 20:22:15,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-11-16 20:22:15,727 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 20:22:15,727 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:22:15,735 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd38f052-e129-49b9-b885-cdbb5dcb6687/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt (34)] Forceful destruction successful, exit code 0 [2022-11-16 20:22:15,940 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd38f052-e129-49b9-b885-cdbb5dcb6687/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (33)] Ended with exit code 0 [2022-11-16 20:22:16,130 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd38f052-e129-49b9-b885-cdbb5dcb6687/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt,33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd38f052-e129-49b9-b885-cdbb5dcb6687/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 20:22:16,131 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-11-16 20:22:16,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 20:22:16,131 INFO L85 PathProgramCache]: Analyzing trace with hash 1073113523, now seen corresponding path program 1 times [2022-11-16 20:22:16,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-16 20:22:16,132 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1850557393] [2022-11-16 20:22:16,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:22:16,132 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 20:22:16,132 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd38f052-e129-49b9-b885-cdbb5dcb6687/bin/utaipan-Xvt2sAort0/mathsat [2022-11-16 20:22:16,133 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd38f052-e129-49b9-b885-cdbb5dcb6687/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 20:22:16,134 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd38f052-e129-49b9-b885-cdbb5dcb6687/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (35)] Waiting until timeout for monitored process [2022-11-16 20:22:16,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:22:16,348 INFO L263 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-16 20:22:16,350 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 20:22:16,454 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 20:22:16,454 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 20:22:16,699 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 20:22:16,699 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-16 20:22:16,699 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1850557393] [2022-11-16 20:22:16,699 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1850557393] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 20:22:16,699 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1543145051] [2022-11-16 20:22:16,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:22:16,700 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-16 20:22:16,700 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd38f052-e129-49b9-b885-cdbb5dcb6687/bin/utaipan-Xvt2sAort0/cvc4 [2022-11-16 20:22:16,703 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd38f052-e129-49b9-b885-cdbb5dcb6687/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-16 20:22:16,721 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd38f052-e129-49b9-b885-cdbb5dcb6687/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt (36)] Waiting until timeout for monitored process [2022-11-16 20:22:17,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:22:17,092 INFO L263 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-16 20:22:17,093 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 20:22:17,128 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 20:22:17,128 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 20:22:17,169 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 20:22:17,169 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1543145051] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 20:22:17,169 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [597151297] [2022-11-16 20:22:17,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:22:17,170 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 20:22:17,170 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd38f052-e129-49b9-b885-cdbb5dcb6687/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 20:22:17,171 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd38f052-e129-49b9-b885-cdbb5dcb6687/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 20:22:17,198 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd38f052-e129-49b9-b885-cdbb5dcb6687/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2022-11-16 20:22:17,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:22:17,425 INFO L263 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-16 20:22:17,427 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 20:22:17,440 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 7 [2022-11-16 20:22:17,764 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 20:22:17,764 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 20:22:17,764 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [597151297] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 20:22:17,764 INFO L184 FreeRefinementEngine]: Found 1 perfect and 4 imperfect interpolant sequences. [2022-11-16 20:22:17,764 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [8, 8, 8, 8] total 22 [2022-11-16 20:22:17,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948196980] [2022-11-16 20:22:17,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 20:22:17,765 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 20:22:17,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-16 20:22:17,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 20:22:17,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=378, Unknown=0, NotChecked=0, Total=462 [2022-11-16 20:22:17,766 INFO L87 Difference]: Start difference. First operand 76 states and 79 transitions. Second operand has 10 states, 9 states have (on average 3.7777777777777777) internal successors, (34), 9 states have internal predecessors, (34), 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 20:22:18,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 20:22:18,225 INFO L93 Difference]: Finished difference Result 84 states and 85 transitions. [2022-11-16 20:22:18,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-16 20:22:18,226 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.7777777777777777) internal successors, (34), 9 states have internal predecessors, (34), 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 41 [2022-11-16 20:22:18,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 20:22:18,226 INFO L225 Difference]: With dead ends: 84 [2022-11-16 20:22:18,226 INFO L226 Difference]: Without dead ends: 84 [2022-11-16 20:22:18,227 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 179 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 160 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=116, Invalid=534, Unknown=0, NotChecked=0, Total=650 [2022-11-16 20:22:18,228 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 158 mSDsluCounter, 172 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 158 SdHoareTripleChecker+Valid, 222 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 11 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-16 20:22:18,228 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [158 Valid, 222 Invalid, 144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 132 Invalid, 0 Unknown, 11 Unchecked, 0.3s Time] [2022-11-16 20:22:18,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2022-11-16 20:22:18,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 74. [2022-11-16 20:22:18,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 59 states have (on average 1.2372881355932204) internal successors, (73), 69 states have internal predecessors, (73), 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 20:22:18,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 77 transitions. [2022-11-16 20:22:18,231 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 77 transitions. Word has length 41 [2022-11-16 20:22:18,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 20:22:18,231 INFO L495 AbstractCegarLoop]: Abstraction has 74 states and 77 transitions. [2022-11-16 20:22:18,231 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 3.7777777777777777) internal successors, (34), 9 states have internal predecessors, (34), 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 20:22:18,231 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 77 transitions. [2022-11-16 20:22:18,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-11-16 20:22:18,232 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 20:22:18,232 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:22:18,246 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd38f052-e129-49b9-b885-cdbb5dcb6687/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Forceful destruction successful, exit code 0 [2022-11-16 20:22:18,443 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd38f052-e129-49b9-b885-cdbb5dcb6687/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (35)] Ended with exit code 0 [2022-11-16 20:22:18,636 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd38f052-e129-49b9-b885-cdbb5dcb6687/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt (36)] Ended with exit code 0 [2022-11-16 20:22:18,833 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd38f052-e129-49b9-b885-cdbb5dcb6687/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd38f052-e129-49b9-b885-cdbb5dcb6687/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd38f052-e129-49b9-b885-cdbb5dcb6687/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt [2022-11-16 20:22:18,833 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-11-16 20:22:18,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 20:22:18,834 INFO L85 PathProgramCache]: Analyzing trace with hash 1073113524, now seen corresponding path program 1 times [2022-11-16 20:22:18,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-16 20:22:18,834 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1637350000] [2022-11-16 20:22:18,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:22:18,834 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 20:22:18,834 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd38f052-e129-49b9-b885-cdbb5dcb6687/bin/utaipan-Xvt2sAort0/mathsat [2022-11-16 20:22:18,835 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd38f052-e129-49b9-b885-cdbb5dcb6687/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 20:22:18,836 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd38f052-e129-49b9-b885-cdbb5dcb6687/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (38)] Waiting until timeout for monitored process [2022-11-16 20:22:19,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:22:19,047 INFO L263 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-16 20:22:19,048 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 20:22:19,153 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 20:22:19,154 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 20:22:19,401 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 20:22:19,401 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-16 20:22:19,402 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1637350000] [2022-11-16 20:22:19,402 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1637350000] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 20:22:19,402 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1259191263] [2022-11-16 20:22:19,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:22:19,402 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-16 20:22:19,402 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd38f052-e129-49b9-b885-cdbb5dcb6687/bin/utaipan-Xvt2sAort0/cvc4 [2022-11-16 20:22:19,403 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd38f052-e129-49b9-b885-cdbb5dcb6687/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-16 20:22:19,422 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd38f052-e129-49b9-b885-cdbb5dcb6687/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt (39)] Waiting until timeout for monitored process [2022-11-16 20:22:19,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:22:19,771 INFO L263 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-16 20:22:19,772 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 20:22:19,808 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 20:22:19,808 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 20:22:19,841 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 20:22:19,841 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1259191263] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 20:22:19,841 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1650995119] [2022-11-16 20:22:19,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:22:19,842 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 20:22:19,842 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd38f052-e129-49b9-b885-cdbb5dcb6687/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 20:22:19,843 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd38f052-e129-49b9-b885-cdbb5dcb6687/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 20:22:19,848 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd38f052-e129-49b9-b885-cdbb5dcb6687/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2022-11-16 20:22:20,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:22:20,055 INFO L263 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 30 conjunts are in the unsatisfiable core [2022-11-16 20:22:20,056 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 20:22:20,085 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 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 20:22:20,663 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 20:22:20,663 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 20:22:20,664 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1650995119] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 20:22:20,664 INFO L184 FreeRefinementEngine]: Found 1 perfect and 4 imperfect interpolant sequences. [2022-11-16 20:22:20,664 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [8, 8, 8, 8] total 23 [2022-11-16 20:22:20,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170130147] [2022-11-16 20:22:20,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 20:22:20,665 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-16 20:22:20,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-16 20:22:20,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-16 20:22:20,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=421, Unknown=0, NotChecked=0, Total=506 [2022-11-16 20:22:20,666 INFO L87 Difference]: Start difference. First operand 74 states and 77 transitions. Second operand has 11 states, 10 states have (on average 3.4) internal successors, (34), 10 states have internal predecessors, (34), 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 20:22:21,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 20:22:21,232 INFO L93 Difference]: Finished difference Result 76 states and 78 transitions. [2022-11-16 20:22:21,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-16 20:22:21,238 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 3.4) internal successors, (34), 10 states have internal predecessors, (34), 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 41 [2022-11-16 20:22:21,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 20:22:21,238 INFO L225 Difference]: With dead ends: 76 [2022-11-16 20:22:21,239 INFO L226 Difference]: Without dead ends: 76 [2022-11-16 20:22:21,239 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 178 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 184 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=121, Invalid=635, Unknown=0, NotChecked=0, Total=756 [2022-11-16 20:22:21,240 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 255 mSDsluCounter, 202 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 255 SdHoareTripleChecker+Valid, 255 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 6 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-16 20:22:21,240 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [255 Valid, 255 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 110 Invalid, 0 Unknown, 6 Unchecked, 0.3s Time] [2022-11-16 20:22:21,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2022-11-16 20:22:21,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 72. [2022-11-16 20:22:21,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 59 states have (on average 1.2033898305084745) internal successors, (71), 67 states have internal predecessors, (71), 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 20:22:21,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 75 transitions. [2022-11-16 20:22:21,243 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 75 transitions. Word has length 41 [2022-11-16 20:22:21,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 20:22:21,244 INFO L495 AbstractCegarLoop]: Abstraction has 72 states and 75 transitions. [2022-11-16 20:22:21,244 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 3.4) internal successors, (34), 10 states have internal predecessors, (34), 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 20:22:21,244 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 75 transitions. [2022-11-16 20:22:21,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-11-16 20:22:21,245 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 20:22:21,245 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:22:21,264 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd38f052-e129-49b9-b885-cdbb5dcb6687/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (38)] Forceful destruction successful, exit code 0 [2022-11-16 20:22:21,463 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd38f052-e129-49b9-b885-cdbb5dcb6687/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt (39)] Ended with exit code 0 [2022-11-16 20:22:21,667 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd38f052-e129-49b9-b885-cdbb5dcb6687/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Forceful destruction successful, exit code 0 [2022-11-16 20:22:21,861 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd38f052-e129-49b9-b885-cdbb5dcb6687/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd38f052-e129-49b9-b885-cdbb5dcb6687/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt,40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd38f052-e129-49b9-b885-cdbb5dcb6687/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 20:22:21,861 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-11-16 20:22:21,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 20:22:21,861 INFO L85 PathProgramCache]: Analyzing trace with hash 471424693, now seen corresponding path program 1 times [2022-11-16 20:22:21,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-16 20:22:21,862 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1889544476] [2022-11-16 20:22:21,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:22:21,862 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 20:22:21,862 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd38f052-e129-49b9-b885-cdbb5dcb6687/bin/utaipan-Xvt2sAort0/mathsat [2022-11-16 20:22:21,863 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd38f052-e129-49b9-b885-cdbb5dcb6687/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 20:22:21,865 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd38f052-e129-49b9-b885-cdbb5dcb6687/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (41)] Waiting until timeout for monitored process [2022-11-16 20:22:22,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:22:22,071 INFO L263 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-16 20:22:22,072 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 20:22:22,158 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 20:22:22,158 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 20:22:22,382 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 20:22:22,382 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-16 20:22:22,382 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1889544476] [2022-11-16 20:22:22,382 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1889544476] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 20:22:22,382 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [934217904] [2022-11-16 20:22:22,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:22:22,382 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-16 20:22:22,383 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd38f052-e129-49b9-b885-cdbb5dcb6687/bin/utaipan-Xvt2sAort0/cvc4 [2022-11-16 20:22:22,383 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd38f052-e129-49b9-b885-cdbb5dcb6687/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-16 20:22:22,385 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd38f052-e129-49b9-b885-cdbb5dcb6687/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt (42)] Waiting until timeout for monitored process [2022-11-16 20:22:22,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:22:22,693 INFO L263 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-16 20:22:22,695 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 20:22:22,895 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 20:22:22,895 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 20:22:22,896 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [934217904] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 20:22:22,896 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-16 20:22:22,896 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8, 8] total 20 [2022-11-16 20:22:22,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972941845] [2022-11-16 20:22:22,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 20:22:22,897 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 20:22:22,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-16 20:22:22,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 20:22:22,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=307, Unknown=0, NotChecked=0, Total=380 [2022-11-16 20:22:22,898 INFO L87 Difference]: Start difference. First operand 72 states and 75 transitions. Second operand has 8 states, 8 states have (on average 4.5) internal successors, (36), 7 states have internal predecessors, (36), 2 states have call successors, (2), 1 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 20:22:23,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 20:22:23,041 INFO L93 Difference]: Finished difference Result 72 states and 74 transitions. [2022-11-16 20:22:23,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-16 20:22:23,043 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.5) internal successors, (36), 7 states have internal predecessors, (36), 2 states have call successors, (2), 1 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 43 [2022-11-16 20:22:23,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 20:22:23,044 INFO L225 Difference]: With dead ends: 72 [2022-11-16 20:22:23,044 INFO L226 Difference]: Without dead ends: 72 [2022-11-16 20:22:23,045 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=91, Invalid=415, Unknown=0, NotChecked=0, Total=506 [2022-11-16 20:22:23,047 INFO L413 NwaCegarLoop]: 63 mSDtfsCounter, 158 mSDsluCounter, 204 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 158 SdHoareTripleChecker+Valid, 267 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 20:22:23,048 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [158 Valid, 267 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 20:22:23,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2022-11-16 20:22:23,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2022-11-16 20:22:23,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 59 states have (on average 1.1864406779661016) internal successors, (70), 67 states have internal predecessors, (70), 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 20:22:23,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 74 transitions. [2022-11-16 20:22:23,054 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 74 transitions. Word has length 43 [2022-11-16 20:22:23,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 20:22:23,054 INFO L495 AbstractCegarLoop]: Abstraction has 72 states and 74 transitions. [2022-11-16 20:22:23,054 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.5) internal successors, (36), 7 states have internal predecessors, (36), 2 states have call successors, (2), 1 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 20:22:23,055 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 74 transitions. [2022-11-16 20:22:23,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-11-16 20:22:23,055 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 20:22:23,056 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:22:23,074 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd38f052-e129-49b9-b885-cdbb5dcb6687/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (41)] Forceful destruction successful, exit code 0 [2022-11-16 20:22:23,259 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd38f052-e129-49b9-b885-cdbb5dcb6687/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt (42)] Ended with exit code 0 [2022-11-16 20:22:23,456 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd38f052-e129-49b9-b885-cdbb5dcb6687/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,42 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd38f052-e129-49b9-b885-cdbb5dcb6687/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt [2022-11-16 20:22:23,457 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-11-16 20:22:23,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 20:22:23,457 INFO L85 PathProgramCache]: Analyzing trace with hash -1351439849, now seen corresponding path program 1 times [2022-11-16 20:22:23,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-16 20:22:23,458 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [575147436] [2022-11-16 20:22:23,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:22:23,458 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 20:22:23,458 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd38f052-e129-49b9-b885-cdbb5dcb6687/bin/utaipan-Xvt2sAort0/mathsat [2022-11-16 20:22:23,460 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd38f052-e129-49b9-b885-cdbb5dcb6687/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 20:22:23,461 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd38f052-e129-49b9-b885-cdbb5dcb6687/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (43)] Waiting until timeout for monitored process [2022-11-16 20:22:23,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:22:23,740 INFO L263 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-16 20:22:23,742 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 20:22:23,835 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 20:22:23,835 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 20:22:24,070 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 20:22:24,071 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-16 20:22:24,071 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [575147436] [2022-11-16 20:22:24,071 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [575147436] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 20:22:24,071 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [798527219] [2022-11-16 20:22:24,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:22:24,071 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-16 20:22:24,071 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd38f052-e129-49b9-b885-cdbb5dcb6687/bin/utaipan-Xvt2sAort0/cvc4 [2022-11-16 20:22:24,075 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd38f052-e129-49b9-b885-cdbb5dcb6687/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-16 20:22:24,094 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd38f052-e129-49b9-b885-cdbb5dcb6687/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt (44)] Waiting until timeout for monitored process [2022-11-16 20:22:24,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:22:24,552 INFO L263 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-16 20:22:24,553 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 20:22:24,595 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 20:22:24,595 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 20:22:24,636 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 20:22:24,636 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [798527219] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 20:22:24,637 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1413457455] [2022-11-16 20:22:24,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:22:24,637 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 20:22:24,637 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd38f052-e129-49b9-b885-cdbb5dcb6687/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 20:22:24,639 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd38f052-e129-49b9-b885-cdbb5dcb6687/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 20:22:24,658 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd38f052-e129-49b9-b885-cdbb5dcb6687/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2022-11-16 20:22:24,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:22:24,880 INFO L263 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 21 conjunts are in the unsatisfiable core [2022-11-16 20:22:24,881 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 20:22:24,884 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 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 20:22:25,213 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 20:22:25,213 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 20:22:25,213 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1413457455] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 20:22:25,214 INFO L184 FreeRefinementEngine]: Found 1 perfect and 4 imperfect interpolant sequences. [2022-11-16 20:22:25,214 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [8, 8, 8, 8] total 23 [2022-11-16 20:22:25,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74799827] [2022-11-16 20:22:25,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 20:22:25,215 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-16 20:22:25,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-16 20:22:25,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-16 20:22:25,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=419, Unknown=0, NotChecked=0, Total=506 [2022-11-16 20:22:25,216 INFO L87 Difference]: Start difference. First operand 72 states and 74 transitions. Second operand has 11 states, 10 states have (on average 4.0) internal successors, (40), 10 states have internal predecessors, (40), 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 20:22:25,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 20:22:25,725 INFO L93 Difference]: Finished difference Result 76 states and 77 transitions. [2022-11-16 20:22:25,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-16 20:22:25,727 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 4.0) internal successors, (40), 10 states have internal predecessors, (40), 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 47 [2022-11-16 20:22:25,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 20:22:25,728 INFO L225 Difference]: With dead ends: 76 [2022-11-16 20:22:25,728 INFO L226 Difference]: Without dead ends: 76 [2022-11-16 20:22:25,728 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 208 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 177 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=132, Invalid=624, Unknown=0, NotChecked=0, Total=756 [2022-11-16 20:22:25,729 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 136 mSDsluCounter, 203 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 247 SdHoareTripleChecker+Invalid, 165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 11 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-16 20:22:25,729 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [136 Valid, 247 Invalid, 165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 153 Invalid, 0 Unknown, 11 Unchecked, 0.3s Time] [2022-11-16 20:22:25,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2022-11-16 20:22:25,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 70. [2022-11-16 20:22:25,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 59 states have (on average 1.152542372881356) internal successors, (68), 65 states have internal predecessors, (68), 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 20:22:25,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 72 transitions. [2022-11-16 20:22:25,732 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 72 transitions. Word has length 47 [2022-11-16 20:22:25,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 20:22:25,733 INFO L495 AbstractCegarLoop]: Abstraction has 70 states and 72 transitions. [2022-11-16 20:22:25,733 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 4.0) internal successors, (40), 10 states have internal predecessors, (40), 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 20:22:25,733 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 72 transitions. [2022-11-16 20:22:25,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-11-16 20:22:25,734 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 20:22:25,734 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:22:25,744 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd38f052-e129-49b9-b885-cdbb5dcb6687/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Ended with exit code 0 [2022-11-16 20:22:25,944 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd38f052-e129-49b9-b885-cdbb5dcb6687/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt (44)] Ended with exit code 0 [2022-11-16 20:22:26,151 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd38f052-e129-49b9-b885-cdbb5dcb6687/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (43)] Ended with exit code 0 [2022-11-16 20:22:26,342 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd38f052-e129-49b9-b885-cdbb5dcb6687/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,44 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd38f052-e129-49b9-b885-cdbb5dcb6687/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt,43 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd38f052-e129-49b9-b885-cdbb5dcb6687/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 20:22:26,342 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-11-16 20:22:26,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 20:22:26,343 INFO L85 PathProgramCache]: Analyzing trace with hash -1351439848, now seen corresponding path program 1 times [2022-11-16 20:22:26,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-16 20:22:26,343 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [575470108] [2022-11-16 20:22:26,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:22:26,343 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 20:22:26,343 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd38f052-e129-49b9-b885-cdbb5dcb6687/bin/utaipan-Xvt2sAort0/mathsat [2022-11-16 20:22:26,344 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd38f052-e129-49b9-b885-cdbb5dcb6687/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 20:22:26,348 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd38f052-e129-49b9-b885-cdbb5dcb6687/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (46)] Waiting until timeout for monitored process [2022-11-16 20:22:26,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:22:26,576 INFO L263 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-16 20:22:26,579 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 20:22:26,660 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 20:22:26,660 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 20:22:26,867 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 20:22:26,867 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-16 20:22:26,867 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [575470108] [2022-11-16 20:22:26,867 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [575470108] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 20:22:26,868 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [123517451] [2022-11-16 20:22:26,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:22:26,868 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-16 20:22:26,868 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd38f052-e129-49b9-b885-cdbb5dcb6687/bin/utaipan-Xvt2sAort0/cvc4 [2022-11-16 20:22:26,869 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd38f052-e129-49b9-b885-cdbb5dcb6687/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-16 20:22:26,890 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd38f052-e129-49b9-b885-cdbb5dcb6687/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt (47)] Waiting until timeout for monitored process [2022-11-16 20:22:27,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:22:27,325 INFO L263 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-16 20:22:27,326 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 20:22:27,376 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 20:22:27,376 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 20:22:27,420 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 20:22:27,420 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [123517451] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 20:22:27,420 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2072440899] [2022-11-16 20:22:27,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:22:27,421 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 20:22:27,421 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd38f052-e129-49b9-b885-cdbb5dcb6687/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 20:22:27,427 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd38f052-e129-49b9-b885-cdbb5dcb6687/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 20:22:27,472 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd38f052-e129-49b9-b885-cdbb5dcb6687/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process [2022-11-16 20:22:27,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:22:27,735 INFO L263 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 42 conjunts are in the unsatisfiable core [2022-11-16 20:22:27,738 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 20:22:27,766 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 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 20:22:28,364 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 20:22:28,364 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 20:22:28,364 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2072440899] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 20:22:28,364 INFO L184 FreeRefinementEngine]: Found 1 perfect and 4 imperfect interpolant sequences. [2022-11-16 20:22:28,364 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [8, 8, 8, 8] total 24 [2022-11-16 20:22:28,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703737293] [2022-11-16 20:22:28,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 20:22:28,365 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-16 20:22:28,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-16 20:22:28,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-16 20:22:28,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=464, Unknown=0, NotChecked=0, Total=552 [2022-11-16 20:22:28,366 INFO L87 Difference]: Start difference. First operand 70 states and 72 transitions. Second operand has 12 states, 11 states have (on average 3.6363636363636362) internal successors, (40), 11 states have internal predecessors, (40), 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 20:22:29,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 20:22:29,085 INFO L93 Difference]: Finished difference Result 74 states and 75 transitions. [2022-11-16 20:22:29,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-16 20:22:29,086 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 3.6363636363636362) internal successors, (40), 11 states have internal predecessors, (40), 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 47 [2022-11-16 20:22:29,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 20:22:29,087 INFO L225 Difference]: With dead ends: 74 [2022-11-16 20:22:29,087 INFO L226 Difference]: Without dead ends: 74 [2022-11-16 20:22:29,087 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 207 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 203 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=137, Invalid=733, Unknown=0, NotChecked=0, Total=870 [2022-11-16 20:22:29,088 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 203 mSDsluCounter, 215 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 203 SdHoareTripleChecker+Valid, 262 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 6 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-16 20:22:29,088 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [203 Valid, 262 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 145 Invalid, 0 Unknown, 6 Unchecked, 0.4s Time] [2022-11-16 20:22:29,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2022-11-16 20:22:29,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 68. [2022-11-16 20:22:29,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 59 states have (on average 1.11864406779661) internal successors, (66), 63 states have internal predecessors, (66), 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 20:22:29,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 70 transitions. [2022-11-16 20:22:29,091 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 70 transitions. Word has length 47 [2022-11-16 20:22:29,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 20:22:29,091 INFO L495 AbstractCegarLoop]: Abstraction has 68 states and 70 transitions. [2022-11-16 20:22:29,092 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 3.6363636363636362) internal successors, (40), 11 states have internal predecessors, (40), 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 20:22:29,092 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 70 transitions. [2022-11-16 20:22:29,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-11-16 20:22:29,092 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 20:22:29,093 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:22:29,101 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd38f052-e129-49b9-b885-cdbb5dcb6687/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt (47)] Forceful destruction successful, exit code 0 [2022-11-16 20:22:29,303 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd38f052-e129-49b9-b885-cdbb5dcb6687/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Ended with exit code 0 [2022-11-16 20:22:29,507 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd38f052-e129-49b9-b885-cdbb5dcb6687/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (46)] Ended with exit code 0 [2022-11-16 20:22:29,698 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd38f052-e129-49b9-b885-cdbb5dcb6687/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt,48 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd38f052-e129-49b9-b885-cdbb5dcb6687/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,46 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd38f052-e129-49b9-b885-cdbb5dcb6687/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 20:22:29,698 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-11-16 20:22:29,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 20:22:29,699 INFO L85 PathProgramCache]: Analyzing trace with hash 278951782, now seen corresponding path program 1 times [2022-11-16 20:22:29,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-16 20:22:29,699 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [751018642] [2022-11-16 20:22:29,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:22:29,699 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 20:22:29,699 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd38f052-e129-49b9-b885-cdbb5dcb6687/bin/utaipan-Xvt2sAort0/mathsat [2022-11-16 20:22:29,700 INFO L229 MonitoredProcess]: Starting monitored process 49 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd38f052-e129-49b9-b885-cdbb5dcb6687/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 20:22:29,711 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd38f052-e129-49b9-b885-cdbb5dcb6687/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (49)] Waiting until timeout for monitored process [2022-11-16 20:22:29,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:22:29,955 INFO L263 TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-16 20:22:29,957 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 20:22:30,050 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 20:22:30,050 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 20:22:30,272 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 20:22:30,272 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-16 20:22:30,272 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [751018642] [2022-11-16 20:22:30,272 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [751018642] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 20:22:30,273 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1960054841] [2022-11-16 20:22:30,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:22:30,273 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-16 20:22:30,273 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd38f052-e129-49b9-b885-cdbb5dcb6687/bin/utaipan-Xvt2sAort0/cvc4 [2022-11-16 20:22:30,274 INFO L229 MonitoredProcess]: Starting monitored process 50 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd38f052-e129-49b9-b885-cdbb5dcb6687/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-16 20:22:30,275 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd38f052-e129-49b9-b885-cdbb5dcb6687/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt (50)] Waiting until timeout for monitored process [2022-11-16 20:22:30,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:22:30,671 INFO L263 TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-16 20:22:30,672 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 20:22:31,087 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 20:22:31,088 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 20:22:31,088 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1960054841] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 20:22:31,088 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-16 20:22:31,088 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [8, 8] total 23 [2022-11-16 20:22:31,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169819154] [2022-11-16 20:22:31,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 20:22:31,089 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-16 20:22:31,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-16 20:22:31,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-16 20:22:31,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=419, Unknown=0, NotChecked=0, Total=506 [2022-11-16 20:22:31,090 INFO L87 Difference]: Start difference. First operand 68 states and 70 transitions. Second operand has 11 states, 10 states have (on average 4.3) internal successors, (43), 10 states have internal predecessors, (43), 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 20:22:31,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 20:22:31,595 INFO L93 Difference]: Finished difference Result 73 states and 74 transitions. [2022-11-16 20:22:31,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-16 20:22:31,600 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 4.3) internal successors, (43), 10 states have internal predecessors, (43), 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 50 [2022-11-16 20:22:31,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 20:22:31,600 INFO L225 Difference]: With dead ends: 73 [2022-11-16 20:22:31,601 INFO L226 Difference]: Without dead ends: 73 [2022-11-16 20:22:31,601 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 164 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=132, Invalid=624, Unknown=0, NotChecked=0, Total=756 [2022-11-16 20:22:31,602 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 197 mSDsluCounter, 219 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 198 SdHoareTripleChecker+Valid, 274 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 20:22:31,602 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [198 Valid, 274 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-16 20:22:31,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2022-11-16 20:22:31,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 67. [2022-11-16 20:22:31,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 59 states have (on average 1.1016949152542372) internal successors, (65), 62 states have internal predecessors, (65), 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 20:22:31,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 69 transitions. [2022-11-16 20:22:31,605 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 69 transitions. Word has length 50 [2022-11-16 20:22:31,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 20:22:31,606 INFO L495 AbstractCegarLoop]: Abstraction has 67 states and 69 transitions. [2022-11-16 20:22:31,606 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 4.3) internal successors, (43), 10 states have internal predecessors, (43), 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 20:22:31,606 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 69 transitions. [2022-11-16 20:22:31,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-11-16 20:22:31,607 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 20:22:31,607 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:22:31,614 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd38f052-e129-49b9-b885-cdbb5dcb6687/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt (50)] Forceful destruction successful, exit code 0 [2022-11-16 20:22:31,826 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd38f052-e129-49b9-b885-cdbb5dcb6687/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (49)] Forceful destruction successful, exit code 0 [2022-11-16 20:22:32,011 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd38f052-e129-49b9-b885-cdbb5dcb6687/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt,49 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd38f052-e129-49b9-b885-cdbb5dcb6687/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 20:22:32,012 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-11-16 20:22:32,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 20:22:32,012 INFO L85 PathProgramCache]: Analyzing trace with hash 916416509, now seen corresponding path program 1 times [2022-11-16 20:22:32,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-16 20:22:32,012 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1864254514] [2022-11-16 20:22:32,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:22:32,013 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 20:22:32,013 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd38f052-e129-49b9-b885-cdbb5dcb6687/bin/utaipan-Xvt2sAort0/mathsat [2022-11-16 20:22:32,014 INFO L229 MonitoredProcess]: Starting monitored process 51 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd38f052-e129-49b9-b885-cdbb5dcb6687/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 20:22:32,018 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd38f052-e129-49b9-b885-cdbb5dcb6687/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (51)] Waiting until timeout for monitored process [2022-11-16 20:22:32,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:22:32,304 INFO L263 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-16 20:22:32,306 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 20:22:32,389 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 20:22:32,390 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 20:22:32,626 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 20:22:32,626 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-16 20:22:32,626 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1864254514] [2022-11-16 20:22:32,627 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1864254514] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 20:22:32,627 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1680505262] [2022-11-16 20:22:32,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:22:32,627 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-16 20:22:32,627 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd38f052-e129-49b9-b885-cdbb5dcb6687/bin/utaipan-Xvt2sAort0/cvc4 [2022-11-16 20:22:32,628 INFO L229 MonitoredProcess]: Starting monitored process 52 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd38f052-e129-49b9-b885-cdbb5dcb6687/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-16 20:22:32,631 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd38f052-e129-49b9-b885-cdbb5dcb6687/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt (52)] Waiting until timeout for monitored process [2022-11-16 20:22:33,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:22:33,093 INFO L263 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-16 20:22:33,095 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 20:22:33,122 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 20:22:33,122 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 20:22:33,155 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 20:22:33,156 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1680505262] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 20:22:33,156 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1612830238] [2022-11-16 20:22:33,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:22:33,156 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 20:22:33,156 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd38f052-e129-49b9-b885-cdbb5dcb6687/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 20:22:33,157 INFO L229 MonitoredProcess]: Starting monitored process 53 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd38f052-e129-49b9-b885-cdbb5dcb6687/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 20:22:33,172 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd38f052-e129-49b9-b885-cdbb5dcb6687/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Waiting until timeout for monitored process [2022-11-16 20:22:33,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:22:33,462 INFO L263 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-16 20:22:33,463 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 20:22:33,499 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 20:22:33,499 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 20:22:33,915 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 20:22:33,916 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1612830238] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 20:22:33,916 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-16 20:22:33,916 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8, 8, 8, 8] total 19 [2022-11-16 20:22:33,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866529863] [2022-11-16 20:22:33,916 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-16 20:22:33,917 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-16 20:22:33,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-16 20:22:33,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-16 20:22:33,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=240, Unknown=0, NotChecked=0, Total=342 [2022-11-16 20:22:33,918 INFO L87 Difference]: Start difference. First operand 67 states and 69 transitions. Second operand has 19 states, 19 states have (on average 3.473684210526316) internal successors, (66), 19 states have internal predecessors, (66), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-16 20:22:34,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 20:22:34,345 INFO L93 Difference]: Finished difference Result 73 states and 75 transitions. [2022-11-16 20:22:34,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-16 20:22:34,347 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.473684210526316) internal successors, (66), 19 states have internal predecessors, (66), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 51 [2022-11-16 20:22:34,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 20:22:34,348 INFO L225 Difference]: With dead ends: 73 [2022-11-16 20:22:34,348 INFO L226 Difference]: Without dead ends: 73 [2022-11-16 20:22:34,349 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 306 GetRequests, 283 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=202, Invalid=398, Unknown=0, NotChecked=0, Total=600 [2022-11-16 20:22:34,349 INFO L413 NwaCegarLoop]: 62 mSDtfsCounter, 302 mSDsluCounter, 386 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 302 SdHoareTripleChecker+Valid, 448 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 20:22:34,349 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [302 Valid, 448 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 20:22:34,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2022-11-16 20:22:34,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2022-11-16 20:22:34,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 65 states have (on average 1.0923076923076922) internal successors, (71), 68 states have internal predecessors, (71), 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 20:22:34,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 75 transitions. [2022-11-16 20:22:34,352 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 75 transitions. Word has length 51 [2022-11-16 20:22:34,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 20:22:34,353 INFO L495 AbstractCegarLoop]: Abstraction has 73 states and 75 transitions. [2022-11-16 20:22:34,353 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.473684210526316) internal successors, (66), 19 states have internal predecessors, (66), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-16 20:22:34,353 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 75 transitions. [2022-11-16 20:22:34,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-11-16 20:22:34,354 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 20:22:34,354 INFO L195 NwaCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:22:34,360 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd38f052-e129-49b9-b885-cdbb5dcb6687/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Ended with exit code 0 [2022-11-16 20:22:34,562 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd38f052-e129-49b9-b885-cdbb5dcb6687/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt (52)] Forceful destruction successful, exit code 0 [2022-11-16 20:22:34,768 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd38f052-e129-49b9-b885-cdbb5dcb6687/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (51)] Ended with exit code 0 [2022-11-16 20:22:34,959 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd38f052-e129-49b9-b885-cdbb5dcb6687/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,52 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd38f052-e129-49b9-b885-cdbb5dcb6687/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt,51 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd38f052-e129-49b9-b885-cdbb5dcb6687/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 20:22:34,959 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-11-16 20:22:34,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 20:22:34,960 INFO L85 PathProgramCache]: Analyzing trace with hash -234534435, now seen corresponding path program 2 times [2022-11-16 20:22:34,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-16 20:22:34,960 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [732482467] [2022-11-16 20:22:34,960 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 20:22:34,961 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 20:22:34,961 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd38f052-e129-49b9-b885-cdbb5dcb6687/bin/utaipan-Xvt2sAort0/mathsat [2022-11-16 20:22:34,962 INFO L229 MonitoredProcess]: Starting monitored process 54 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd38f052-e129-49b9-b885-cdbb5dcb6687/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 20:22:34,964 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd38f052-e129-49b9-b885-cdbb5dcb6687/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (54)] Waiting until timeout for monitored process [2022-11-16 20:22:35,388 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 20:22:35,388 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 20:22:35,410 INFO L263 TraceCheckSpWp]: Trace formula consists of 354 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-16 20:22:35,411 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 20:22:35,618 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 20:22:35,618 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 20:22:36,867 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 20:22:36,867 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-16 20:22:36,867 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [732482467] [2022-11-16 20:22:36,868 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [732482467] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 20:22:36,868 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2146249155] [2022-11-16 20:22:36,868 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 20:22:36,868 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-16 20:22:36,868 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd38f052-e129-49b9-b885-cdbb5dcb6687/bin/utaipan-Xvt2sAort0/cvc4 [2022-11-16 20:22:36,869 INFO L229 MonitoredProcess]: Starting monitored process 55 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd38f052-e129-49b9-b885-cdbb5dcb6687/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-16 20:22:36,890 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd38f052-e129-49b9-b885-cdbb5dcb6687/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt (55)] Waiting until timeout for monitored process [2022-11-16 20:22:37,821 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 20:22:37,821 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 20:22:37,830 INFO L263 TraceCheckSpWp]: Trace formula consists of 354 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-16 20:22:37,831 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 20:22:37,917 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 20:22:37,917 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 20:22:38,409 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 20:22:38,410 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2146249155] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 20:22:38,410 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1265059891] [2022-11-16 20:22:38,410 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 20:22:38,410 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 20:22:38,410 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd38f052-e129-49b9-b885-cdbb5dcb6687/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 20:22:38,411 INFO L229 MonitoredProcess]: Starting monitored process 56 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd38f052-e129-49b9-b885-cdbb5dcb6687/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 20:22:38,413 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd38f052-e129-49b9-b885-cdbb5dcb6687/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Waiting until timeout for monitored process [2022-11-16 20:22:39,350 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 20:22:39,350 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 20:22:39,360 INFO L263 TraceCheckSpWp]: Trace formula consists of 354 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-16 20:22:39,362 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 20:22:39,427 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 20:22:39,427 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 20:22:40,498 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 20:22:40,498 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1265059891] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 20:22:40,499 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-16 20:22:40,499 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14, 14, 14, 14] total 35 [2022-11-16 20:22:40,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943476179] [2022-11-16 20:22:40,499 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-16 20:22:40,500 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-11-16 20:22:40,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-16 20:22:40,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-11-16 20:22:40,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=309, Invalid=881, Unknown=0, NotChecked=0, Total=1190 [2022-11-16 20:22:40,501 INFO L87 Difference]: Start difference. First operand 73 states and 75 transitions. Second operand has 35 states, 35 states have (on average 2.3142857142857145) internal successors, (81), 35 states have internal predecessors, (81), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-16 20:22:43,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 20:22:43,113 INFO L93 Difference]: Finished difference Result 85 states and 88 transitions. [2022-11-16 20:22:43,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-11-16 20:22:43,115 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 2.3142857142857145) internal successors, (81), 35 states have internal predecessors, (81), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 57 [2022-11-16 20:22:43,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 20:22:43,115 INFO L225 Difference]: With dead ends: 85 [2022-11-16 20:22:43,116 INFO L226 Difference]: Without dead ends: 85 [2022-11-16 20:22:43,116 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 348 GetRequests, 303 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 530 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=615, Invalid=1547, Unknown=0, NotChecked=0, Total=2162 [2022-11-16 20:22:43,117 INFO L413 NwaCegarLoop]: 62 mSDtfsCounter, 770 mSDsluCounter, 788 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 770 SdHoareTripleChecker+Valid, 850 SdHoareTripleChecker+Invalid, 204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-16 20:22:43,117 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [770 Valid, 850 Invalid, 204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-16 20:22:43,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2022-11-16 20:22:43,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2022-11-16 20:22:43,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 77 states have (on average 1.0909090909090908) internal successors, (84), 80 states have internal predecessors, (84), 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 20:22:43,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 88 transitions. [2022-11-16 20:22:43,120 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 88 transitions. Word has length 57 [2022-11-16 20:22:43,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 20:22:43,121 INFO L495 AbstractCegarLoop]: Abstraction has 85 states and 88 transitions. [2022-11-16 20:22:43,121 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 2.3142857142857145) internal successors, (81), 35 states have internal predecessors, (81), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-16 20:22:43,121 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 88 transitions. [2022-11-16 20:22:43,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-11-16 20:22:43,122 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 20:22:43,122 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] [2022-11-16 20:22:43,137 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd38f052-e129-49b9-b885-cdbb5dcb6687/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (54)] Forceful destruction successful, exit code 0 [2022-11-16 20:22:43,341 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd38f052-e129-49b9-b885-cdbb5dcb6687/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt (55)] Ended with exit code 0 [2022-11-16 20:22:43,545 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd38f052-e129-49b9-b885-cdbb5dcb6687/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Ended with exit code 0 [2022-11-16 20:22:43,737 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd38f052-e129-49b9-b885-cdbb5dcb6687/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,55 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd38f052-e129-49b9-b885-cdbb5dcb6687/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt,56 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd38f052-e129-49b9-b885-cdbb5dcb6687/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 20:22:43,737 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-11-16 20:22:43,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 20:22:43,738 INFO L85 PathProgramCache]: Analyzing trace with hash 1899119549, now seen corresponding path program 3 times [2022-11-16 20:22:43,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-16 20:22:43,738 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1765103901] [2022-11-16 20:22:43,738 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-16 20:22:43,738 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 20:22:43,738 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd38f052-e129-49b9-b885-cdbb5dcb6687/bin/utaipan-Xvt2sAort0/mathsat [2022-11-16 20:22:43,739 INFO L229 MonitoredProcess]: Starting monitored process 57 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd38f052-e129-49b9-b885-cdbb5dcb6687/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 20:22:43,740 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd38f052-e129-49b9-b885-cdbb5dcb6687/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (57)] Waiting until timeout for monitored process [2022-11-16 20:22:44,476 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2022-11-16 20:22:44,476 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2022-11-16 20:22:44,477 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-16 20:22:44,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 20:22:44,835 INFO L130 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2022-11-16 20:22:44,835 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-16 20:22:44,836 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK (24 of 25 remaining) [2022-11-16 20:22:44,838 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE (23 of 25 remaining) [2022-11-16 20:22:44,838 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE (22 of 25 remaining) [2022-11-16 20:22:44,839 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (21 of 25 remaining) [2022-11-16 20:22:44,839 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (20 of 25 remaining) [2022-11-16 20:22:44,839 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 25 remaining) [2022-11-16 20:22:44,839 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 25 remaining) [2022-11-16 20:22:44,839 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 25 remaining) [2022-11-16 20:22:44,840 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 25 remaining) [2022-11-16 20:22:44,840 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 25 remaining) [2022-11-16 20:22:44,840 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 25 remaining) [2022-11-16 20:22:44,840 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 25 remaining) [2022-11-16 20:22:44,840 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 25 remaining) [2022-11-16 20:22:44,840 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 25 remaining) [2022-11-16 20:22:44,841 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 25 remaining) [2022-11-16 20:22:44,841 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_FREE (9 of 25 remaining) [2022-11-16 20:22:44,841 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_FREE (8 of 25 remaining) [2022-11-16 20:22:44,841 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE (7 of 25 remaining) [2022-11-16 20:22:44,841 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE (6 of 25 remaining) [2022-11-16 20:22:44,841 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE (5 of 25 remaining) [2022-11-16 20:22:44,842 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_FREE (4 of 25 remaining) [2022-11-16 20:22:44,842 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 25 remaining) [2022-11-16 20:22:44,842 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 25 remaining) [2022-11-16 20:22:44,842 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location LDV_INIT_LIST_HEADErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 25 remaining) [2022-11-16 20:22:44,842 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location LDV_INIT_LIST_HEADErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 25 remaining) [2022-11-16 20:22:44,862 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd38f052-e129-49b9-b885-cdbb5dcb6687/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (57)] Forceful destruction successful, exit code 0 [2022-11-16 20:22:45,061 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 57 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd38f052-e129-49b9-b885-cdbb5dcb6687/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 20:22:45,064 INFO L444 BasicCegarLoop]: Path program histogram: [3, 2, 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 20:22:45,068 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-16 20:22:45,078 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2022-11-16 20:22:45,084 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2022-11-16 20:22:45,084 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2022-11-16 20:22:45,085 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2022-11-16 20:22:45,085 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2022-11-16 20:22:45,085 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2022-11-16 20:22:45,085 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2022-11-16 20:22:45,086 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2022-11-16 20:22:45,086 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2022-11-16 20:22:45,086 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2022-11-16 20:22:45,086 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2022-11-16 20:22:45,087 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2022-11-16 20:22:45,087 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2022-11-16 20:22:45,089 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2022-11-16 20:22:45,090 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2022-11-16 20:22:45,090 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2022-11-16 20:22:45,090 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2022-11-16 20:22:45,091 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2022-11-16 20:22:45,091 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2022-11-16 20:22:45,091 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2022-11-16 20:22:45,091 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2022-11-16 20:22:45,091 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2022-11-16 20:22:45,092 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2022-11-16 20:22:45,092 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2022-11-16 20:22:45,095 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2022-11-16 20:22:45,095 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2022-11-16 20:22:45,096 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2022-11-16 20:22:45,096 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2022-11-16 20:22:45,096 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2022-11-16 20:22:45,096 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2022-11-16 20:22:45,097 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2022-11-16 20:22:45,097 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2022-11-16 20:22:45,097 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2022-11-16 20:22:45,097 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2022-11-16 20:22:45,098 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2022-11-16 20:22:45,098 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2022-11-16 20:22:45,098 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2022-11-16 20:22:45,098 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2022-11-16 20:22:45,103 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2022-11-16 20:22:45,103 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2022-11-16 20:22:45,103 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2022-11-16 20:22:45,104 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled [2022-11-16 20:22:45,104 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2022-11-16 20:22:45,104 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled [2022-11-16 20:22:45,104 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2022-11-16 20:22:45,104 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled [2022-11-16 20:22:45,105 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2022-11-16 20:22:45,105 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled [2022-11-16 20:22:45,105 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2022-11-16 20:22:45,105 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2022-11-16 20:22:45,106 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled [2022-11-16 20:22:45,106 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled [2022-11-16 20:22:45,106 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2022-11-16 20:22:45,107 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2022-11-16 20:22:45,107 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled [2022-11-16 20:22:45,107 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled [2022-11-16 20:22:45,107 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2022-11-16 20:22:45,107 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2022-11-16 20:22:45,108 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled [2022-11-16 20:22:45,108 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled [2022-11-16 20:22:45,108 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2022-11-16 20:22:45,113 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2022-11-16 20:22:45,113 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled [2022-11-16 20:22:45,114 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled [2022-11-16 20:22:45,114 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2022-11-16 20:22:45,114 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2022-11-16 20:22:45,114 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled [2022-11-16 20:22:45,115 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled [2022-11-16 20:22:45,115 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2022-11-16 20:22:45,115 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2022-11-16 20:22:45,115 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled [2022-11-16 20:22:45,115 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled [2022-11-16 20:22:45,116 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2022-11-16 20:22:45,116 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2022-11-16 20:22:45,116 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled [2022-11-16 20:22:45,116 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled [2022-11-16 20:22:45,117 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2022-11-16 20:22:45,117 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2022-11-16 20:22:45,117 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled [2022-11-16 20:22:45,117 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled [2022-11-16 20:22:45,117 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2022-11-16 20:22:45,118 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2022-11-16 20:22:45,118 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled [2022-11-16 20:22:45,118 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled [2022-11-16 20:22:45,118 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2022-11-16 20:22:45,119 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2022-11-16 20:22:45,119 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled [2022-11-16 20:22:45,119 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled [2022-11-16 20:22:45,119 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2022-11-16 20:22:45,119 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2022-11-16 20:22:45,120 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled [2022-11-16 20:22:45,120 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled [2022-11-16 20:22:45,120 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2022-11-16 20:22:45,120 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2022-11-16 20:22:45,121 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled [2022-11-16 20:22:45,121 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled [2022-11-16 20:22:45,121 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2022-11-16 20:22:45,121 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2022-11-16 20:22:45,121 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled [2022-11-16 20:22:45,122 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled [2022-11-16 20:22:45,122 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2022-11-16 20:22:45,122 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2022-11-16 20:22:45,122 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled [2022-11-16 20:22:45,123 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled [2022-11-16 20:22:45,123 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2022-11-16 20:22:45,123 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2022-11-16 20:22:45,123 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled [2022-11-16 20:22:45,124 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled [2022-11-16 20:22:45,124 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2022-11-16 20:22:45,124 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2022-11-16 20:22:45,124 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled [2022-11-16 20:22:45,125 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled [2022-11-16 20:22:45,125 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2022-11-16 20:22:45,125 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2022-11-16 20:22:45,125 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled [2022-11-16 20:22:45,126 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled [2022-11-16 20:22:45,126 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2022-11-16 20:22:45,126 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2022-11-16 20:22:45,126 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled [2022-11-16 20:22:45,127 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled [2022-11-16 20:22:45,127 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2022-11-16 20:22:45,127 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2022-11-16 20:22:45,127 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled [2022-11-16 20:22:45,128 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled [2022-11-16 20:22:45,128 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2022-11-16 20:22:45,128 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2022-11-16 20:22:45,128 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled [2022-11-16 20:22:45,129 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled [2022-11-16 20:22:45,129 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2022-11-16 20:22:45,129 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2022-11-16 20:22:45,129 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled [2022-11-16 20:22:45,130 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled [2022-11-16 20:22:45,130 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2022-11-16 20:22:45,130 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2022-11-16 20:22:45,130 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled [2022-11-16 20:22:45,131 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled [2022-11-16 20:22:45,131 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2022-11-16 20:22:45,131 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2022-11-16 20:22:45,131 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled [2022-11-16 20:22:45,131 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled [2022-11-16 20:22:45,132 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2022-11-16 20:22:45,132 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2022-11-16 20:22:45,132 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled [2022-11-16 20:22:45,132 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled [2022-11-16 20:22:45,133 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2022-11-16 20:22:45,133 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2022-11-16 20:22:45,133 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled [2022-11-16 20:22:45,133 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled [2022-11-16 20:22:45,134 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2022-11-16 20:22:45,134 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2022-11-16 20:22:45,134 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled [2022-11-16 20:22:45,134 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled [2022-11-16 20:22:45,135 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2022-11-16 20:22:45,135 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2022-11-16 20:22:45,135 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled [2022-11-16 20:22:45,135 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled [2022-11-16 20:22:45,135 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2022-11-16 20:22:45,136 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled [2022-11-16 20:22:45,136 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled [2022-11-16 20:22:45,136 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled [2022-11-16 20:22:45,173 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.11 08:22:45 BoogieIcfgContainer [2022-11-16 20:22:45,173 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-16 20:22:45,174 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-16 20:22:45,174 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-16 20:22:45,174 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-16 20:22:45,175 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 08:21:52" (3/4) ... [2022-11-16 20:22:45,177 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-16 20:22:45,177 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-16 20:22:45,177 INFO L158 Benchmark]: Toolchain (without parser) took 55226.07ms. Allocated memory was 56.6MB in the beginning and 121.6MB in the end (delta: 65.0MB). Free memory was 33.7MB in the beginning and 50.0MB in the end (delta: -16.4MB). Peak memory consumption was 47.2MB. Max. memory is 16.1GB. [2022-11-16 20:22:45,178 INFO L158 Benchmark]: CDTParser took 0.95ms. Allocated memory is still 56.6MB. Free memory was 38.5MB in the beginning and 38.5MB in the end (delta: 43.8kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 20:22:45,178 INFO L158 Benchmark]: CACSL2BoogieTranslator took 868.10ms. Allocated memory was 56.6MB in the beginning and 69.2MB in the end (delta: 12.6MB). Free memory was 33.6MB in the beginning and 49.2MB in the end (delta: -15.7MB). Peak memory consumption was 14.6MB. Max. memory is 16.1GB. [2022-11-16 20:22:45,178 INFO L158 Benchmark]: Boogie Procedure Inliner took 107.77ms. Allocated memory is still 69.2MB. Free memory was 49.2MB in the beginning and 46.4MB in the end (delta: 2.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-16 20:22:45,179 INFO L158 Benchmark]: Boogie Preprocessor took 80.59ms. Allocated memory is still 69.2MB. Free memory was 46.4MB in the beginning and 44.1MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-16 20:22:45,179 INFO L158 Benchmark]: RCFGBuilder took 1009.44ms. Allocated memory is still 69.2MB. Free memory was 44.1MB in the beginning and 35.8MB in the end (delta: 8.3MB). Peak memory consumption was 15.1MB. Max. memory is 16.1GB. [2022-11-16 20:22:45,179 INFO L158 Benchmark]: TraceAbstraction took 53142.70ms. Allocated memory was 69.2MB in the beginning and 121.6MB in the end (delta: 52.4MB). Free memory was 35.2MB in the beginning and 50.0MB in the end (delta: -14.9MB). Peak memory consumption was 36.3MB. Max. memory is 16.1GB. [2022-11-16 20:22:45,179 INFO L158 Benchmark]: Witness Printer took 3.26ms. Allocated memory is still 121.6MB. Free memory is still 50.0MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 20:22:45,181 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.95ms. Allocated memory is still 56.6MB. Free memory was 38.5MB in the beginning and 38.5MB in the end (delta: 43.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 868.10ms. Allocated memory was 56.6MB in the beginning and 69.2MB in the end (delta: 12.6MB). Free memory was 33.6MB in the beginning and 49.2MB in the end (delta: -15.7MB). Peak memory consumption was 14.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 107.77ms. Allocated memory is still 69.2MB. Free memory was 49.2MB in the beginning and 46.4MB in the end (delta: 2.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 80.59ms. Allocated memory is still 69.2MB. Free memory was 46.4MB in the beginning and 44.1MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 1009.44ms. Allocated memory is still 69.2MB. Free memory was 44.1MB in the beginning and 35.8MB in the end (delta: 8.3MB). Peak memory consumption was 15.1MB. Max. memory is 16.1GB. * TraceAbstraction took 53142.70ms. Allocated memory was 69.2MB in the beginning and 121.6MB in the end (delta: 52.4MB). Free memory was 35.2MB in the beginning and 50.0MB in the end (delta: -14.9MB). Peak memory consumption was 36.3MB. Max. memory is 16.1GB. * Witness Printer took 3.26ms. Allocated memory is still 121.6MB. Free memory is still 50.0MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.C_memset_#res#1 : $Pointer$ not handled * 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 - UnprovableResult [Line: 763]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 763. Possible FailurePath: [L569] struct ldv_list_head ldv_global_msg_list = { &(ldv_global_msg_list), &(ldv_global_msg_list) }; VAL [ldv_global_msg_list={1:0}] [L764] CALL entry_point() [L758] struct ldv_kobject *kobj; [L759] CALL, EXPR ldv_kobject_create() [L740] struct ldv_kobject *kobj; VAL [ldv_global_msg_list={1:0}] [L741] CALL, EXPR ldv_malloc(sizeof(*kobj)) VAL [\old(size)=16, ldv_global_msg_list={1:0}] [L526] COND TRUE __VERIFIER_nondet_int() [L527] return malloc(size); [L741] RET, EXPR ldv_malloc(sizeof(*kobj)) VAL [ldv_global_msg_list={1:0}, ldv_malloc(sizeof(*kobj))={2:0}] [L741] kobj = ldv_malloc(sizeof(*kobj)) [L742] COND FALSE !(!kobj) [L744] FCALL memset(kobj, 0, sizeof(*kobj)) [L745] CALL ldv_kobject_init(kobj) [L730] COND FALSE !(!kobj) [L733] CALL ldv_kobject_init_internal(kobj) [L723] COND FALSE !(!kobj) [L725] CALL ldv_kref_init(&kobj->kref) [L682] ((&kref->refcount)->counter) = (1) VAL [kref={2:12}, kref={2:12}, ldv_global_msg_list={1:0}] [L725] RET ldv_kref_init(&kobj->kref) [L726] CALL LDV_INIT_LIST_HEAD(&kobj->entry) VAL [ldv_global_msg_list={1:0}, list={2:4}] [L540] list->next = list VAL [ldv_global_msg_list={1:0}, list={2:4}, list={2:4}] [L541] list->prev = list VAL [ldv_global_msg_list={1:0}, list={2:4}, list={2:4}] [L726] RET LDV_INIT_LIST_HEAD(&kobj->entry) VAL [kobj={2:0}, kobj={2:0}, ldv_global_msg_list={1:0}] [L733] RET ldv_kobject_init_internal(kobj) [L745] RET ldv_kobject_init(kobj) [L746] return kobj; VAL [\result={2:0}, kobj={2:0}, ldv_global_msg_list={1:0}] [L759] RET, EXPR ldv_kobject_create() [L759] kobj = ldv_kobject_create() [L760] CALL ldv_kobject_get(kobj) [L717] COND TRUE \read(*kobj) [L718] CALL ldv_kref_get(&kobj->kref) [L686] CALL ldv_atomic_add_return(1, (&kref->refcount)) [L657] int temp; VAL [\old(i)=1, i=1, ldv_global_msg_list={1:0}, v={2:12}, v={2:12}] [L658] EXPR v->counter VAL [\old(i)=1, i=1, ldv_global_msg_list={1:0}, v={2:12}, v={2:12}, v->counter=1] [L658] temp = v->counter [L659] temp += i VAL [\old(i)=1, i=1, ldv_global_msg_list={1:0}, temp=2, v={2:12}, v={2:12}] [L660] v->counter = temp VAL [\old(i)=1, i=1, ldv_global_msg_list={1:0}, temp=2, v={2:12}, v={2:12}] [L661] return temp; VAL [\old(i)=1, \result=2, i=1, ldv_global_msg_list={1:0}, temp=2, v={2:12}, v={2:12}] [L686] RET ldv_atomic_add_return(1, (&kref->refcount)) [L718] RET ldv_kref_get(&kobj->kref) [L719] return kobj; VAL [\result={2:0}, kobj={2:0}, kobj={2:0}, ldv_global_msg_list={1:0}] [L760] RET ldv_kobject_get(kobj) [L761] CALL ldv_kobject_put(kobj) [L711] COND TRUE \read(*kobj) [L712] CALL ldv_kref_put(&kobj->kref, ldv_kobject_release) [L690] CALL, EXPR ldv_kref_sub(kref, 1, release) [L674] CALL, EXPR ldv_atomic_sub_return(((int) count), (&kref->refcount)) [L665] int temp; VAL [\old(i)=1, i=1, ldv_global_msg_list={1:0}, v={2:12}, v={2:12}] [L666] EXPR v->counter VAL [\old(i)=1, i=1, ldv_global_msg_list={1:0}, v={2:12}, v={2:12}, v->counter=2] [L666] temp = v->counter [L667] temp -= i VAL [\old(i)=1, i=1, ldv_global_msg_list={1:0}, temp=1, v={2:12}, v={2:12}] [L668] v->counter = temp VAL [\old(i)=1, i=1, ldv_global_msg_list={1:0}, temp=1, v={2:12}, v={2:12}] [L669] return temp; VAL [\old(i)=1, \result=1, i=1, ldv_global_msg_list={1:0}, temp=1, v={2:12}, v={2:12}] [L674] RET, EXPR ldv_atomic_sub_return(((int) count), (&kref->refcount)) [L674] COND FALSE !((ldv_atomic_sub_return(((int) count), (&kref->refcount)) == 0)) [L678] return 0; VAL [\old(count)=1, \result=0, count=1, kref={2:12}, kref={2:12}, ldv_global_msg_list={1:0}, release={-1:0}, release={-1:0}] [L690] RET, EXPR ldv_kref_sub(kref, 1, release) [L690] return ldv_kref_sub(kref, 1, release); [L712] RET ldv_kref_put(&kobj->kref, ldv_kobject_release) [L761] RET ldv_kobject_put(kobj) [L764] RET entry_point() - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 700]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 700]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 700]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 702]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 702]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 702]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 86 locations, 25 error locations. Started 1 CEGAR loops. OverallTime: 53.0s, OverallIterations: 27, TraceHistogramMax: 16, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 12.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 4586 SdHoareTripleChecker+Valid, 6.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 4581 mSDsluCounter, 9434 SdHoareTripleChecker+Invalid, 5.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 51 IncrementalHoareTripleChecker+Unchecked, 7332 mSDsCounter, 130 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2804 IncrementalHoareTripleChecker+Invalid, 2985 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 130 mSolverCounterUnsat, 2102 mSDtfsCounter, 2804 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2913 GetRequests, 2477 SyntacticMatches, 6 SemanticMatches, 430 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2554 ImplicationChecksByTransitivity, 13.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=94occurred in iteration=9, InterpolantAutomatonStates: 228, 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, 26 MinimizatonAttempts, 742 StatesRemovedByMinimization, 18 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 1.1s SsaConstructionTime, 5.6s SatisfiabilityAnalysisTime, 15.1s InterpolantComputationTime, 1824 NumberOfCodeBlocks, 1820 NumberOfCodeBlocksAsserted, 67 NumberOfCheckSat, 2833 ConstructedInterpolants, 30 QuantifiedInterpolants, 7458 SizeOfPredicates, 253 NumberOfNonLiveVariables, 10178 ConjunctsInSsa, 558 ConjunctsInUnsatCore, 87 InterpolantComputations, 23 PerfectInterpolantSequences, 141/961 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 RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-11-16 20:22:45,214 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd38f052-e129-49b9-b885-cdbb5dcb6687/bin/utaipan-Xvt2sAort0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample