./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ldv-memsafety/memleaks_test13.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08136510-8e14-4c65-9e2c-741904b6a3e7/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08136510-8e14-4c65-9e2c-741904b6a3e7/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08136510-8e14-4c65-9e2c-741904b6a3e7/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08136510-8e14-4c65-9e2c-741904b6a3e7/bin/uautomizer-uyxdKDjOR8/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test13.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08136510-8e14-4c65-9e2c-741904b6a3e7/bin/uautomizer-uyxdKDjOR8/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08136510-8e14-4c65-9e2c-741904b6a3e7/bin/uautomizer-uyxdKDjOR8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash e403b28035008257649d82a96310933a0e656461d578ec0892b41718c92e86af --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-13 21:13:18,461 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 21:13:18,463 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 21:13:18,482 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 21:13:18,482 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 21:13:18,483 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 21:13:18,484 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 21:13:18,486 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 21:13:18,487 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 21:13:18,488 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 21:13:18,489 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 21:13:18,490 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 21:13:18,490 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 21:13:18,491 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 21:13:18,492 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 21:13:18,494 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 21:13:18,494 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 21:13:18,495 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 21:13:18,497 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 21:13:18,499 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 21:13:18,500 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 21:13:18,501 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 21:13:18,502 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 21:13:18,503 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 21:13:18,506 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 21:13:18,507 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 21:13:18,507 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 21:13:18,508 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 21:13:18,508 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 21:13:18,509 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 21:13:18,509 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 21:13:18,510 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 21:13:18,511 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 21:13:18,512 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 21:13:18,513 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 21:13:18,513 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 21:13:18,514 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 21:13:18,514 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 21:13:18,514 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 21:13:18,515 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 21:13:18,515 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 21:13:18,516 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08136510-8e14-4c65-9e2c-741904b6a3e7/bin/uautomizer-uyxdKDjOR8/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-12-13 21:13:18,535 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 21:13:18,535 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 21:13:18,535 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 21:13:18,535 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 21:13:18,536 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 21:13:18,536 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 21:13:18,537 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 21:13:18,537 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 21:13:18,537 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 21:13:18,537 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 21:13:18,537 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 21:13:18,537 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-13 21:13:18,538 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 21:13:18,538 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 21:13:18,538 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 21:13:18,538 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-12-13 21:13:18,538 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-12-13 21:13:18,538 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-12-13 21:13:18,539 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 21:13:18,539 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-12-13 21:13:18,539 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 21:13:18,539 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 21:13:18,539 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 21:13:18,539 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 21:13:18,539 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 21:13:18,539 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 21:13:18,540 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 21:13:18,540 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 21:13:18,540 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 21:13:18,540 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 21:13:18,540 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 21:13:18,540 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 21:13:18,541 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 21:13:18,541 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 21:13:18,541 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_08136510-8e14-4c65-9e2c-741904b6a3e7/bin/uautomizer-uyxdKDjOR8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08136510-8e14-4c65-9e2c-741904b6a3e7/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e403b28035008257649d82a96310933a0e656461d578ec0892b41718c92e86af [2022-12-13 21:13:18,732 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 21:13:18,748 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 21:13:18,750 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 21:13:18,751 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 21:13:18,752 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 21:13:18,753 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08136510-8e14-4c65-9e2c-741904b6a3e7/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/ldv-memsafety/memleaks_test13.i [2022-12-13 21:13:21,313 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 21:13:21,493 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 21:13:21,493 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08136510-8e14-4c65-9e2c-741904b6a3e7/sv-benchmarks/c/ldv-memsafety/memleaks_test13.i [2022-12-13 21:13:21,503 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08136510-8e14-4c65-9e2c-741904b6a3e7/bin/uautomizer-uyxdKDjOR8/data/ec9f70bdc/bac00772fcd7495c95c3e5c7c44dd41b/FLAG533f658d2 [2022-12-13 21:13:21,513 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08136510-8e14-4c65-9e2c-741904b6a3e7/bin/uautomizer-uyxdKDjOR8/data/ec9f70bdc/bac00772fcd7495c95c3e5c7c44dd41b [2022-12-13 21:13:21,515 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 21:13:21,516 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 21:13:21,517 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 21:13:21,517 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 21:13:21,519 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 21:13:21,520 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 09:13:21" (1/1) ... [2022-12-13 21:13:21,521 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@eac13e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:13:21, skipping insertion in model container [2022-12-13 21:13:21,521 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 09:13:21" (1/1) ... [2022-12-13 21:13:21,528 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 21:13:21,567 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 21:13:21,807 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 21:13:21,820 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2022-12-13 21:13:21,820 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@2d837750 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:13:21, skipping insertion in model container [2022-12-13 21:13:21,820 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 21:13:21,820 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2022-12-13 21:13:21,822 INFO L158 Benchmark]: Toolchain (without parser) took 305.21ms. Allocated memory is still 130.0MB. Free memory was 97.7MB in the beginning and 83.9MB in the end (delta: 13.9MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-12-13 21:13:21,822 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 130.0MB. Free memory is still 102.8MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 21:13:21,822 INFO L158 Benchmark]: CACSL2BoogieTranslator took 303.65ms. Allocated memory is still 130.0MB. Free memory was 97.7MB in the beginning and 83.9MB in the end (delta: 13.9MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-12-13 21:13:21,823 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 130.0MB. Free memory is still 102.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 303.65ms. Allocated memory is still 130.0MB. Free memory was 97.7MB in the beginning and 83.9MB in the end (delta: 13.9MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 576]: Unsupported Syntax Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08136510-8e14-4c65-9e2c-741904b6a3e7/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08136510-8e14-4c65-9e2c-741904b6a3e7/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08136510-8e14-4c65-9e2c-741904b6a3e7/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08136510-8e14-4c65-9e2c-741904b6a3e7/bin/uautomizer-uyxdKDjOR8/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test13.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08136510-8e14-4c65-9e2c-741904b6a3e7/bin/uautomizer-uyxdKDjOR8/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08136510-8e14-4c65-9e2c-741904b6a3e7/bin/uautomizer-uyxdKDjOR8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash e403b28035008257649d82a96310933a0e656461d578ec0892b41718c92e86af --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-13 21:13:23,247 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 21:13:23,249 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 21:13:23,269 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 21:13:23,269 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 21:13:23,270 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 21:13:23,272 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 21:13:23,274 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 21:13:23,276 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 21:13:23,277 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 21:13:23,278 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 21:13:23,279 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 21:13:23,279 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 21:13:23,280 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 21:13:23,281 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 21:13:23,282 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 21:13:23,283 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 21:13:23,284 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 21:13:23,286 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 21:13:23,288 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 21:13:23,289 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 21:13:23,291 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 21:13:23,292 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 21:13:23,293 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 21:13:23,296 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 21:13:23,297 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 21:13:23,297 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 21:13:23,298 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 21:13:23,298 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 21:13:23,299 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 21:13:23,300 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 21:13:23,300 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 21:13:23,301 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 21:13:23,302 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 21:13:23,303 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 21:13:23,303 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 21:13:23,304 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 21:13:23,304 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 21:13:23,304 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 21:13:23,305 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 21:13:23,305 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 21:13:23,306 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08136510-8e14-4c65-9e2c-741904b6a3e7/bin/uautomizer-uyxdKDjOR8/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2022-12-13 21:13:23,329 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 21:13:23,330 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 21:13:23,330 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 21:13:23,330 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 21:13:23,331 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 21:13:23,331 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 21:13:23,332 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 21:13:23,332 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 21:13:23,332 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 21:13:23,332 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 21:13:23,332 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 21:13:23,333 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-13 21:13:23,333 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 21:13:23,333 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 21:13:23,333 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 21:13:23,333 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-12-13 21:13:23,333 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-12-13 21:13:23,334 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-12-13 21:13:23,334 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 21:13:23,334 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-12-13 21:13:23,334 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-12-13 21:13:23,334 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-12-13 21:13:23,335 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 21:13:23,335 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 21:13:23,335 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 21:13:23,335 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 21:13:23,335 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 21:13:23,335 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 21:13:23,336 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 21:13:23,336 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 21:13:23,336 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-12-13 21:13:23,336 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-12-13 21:13:23,336 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 21:13:23,337 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 21:13:23,337 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 21:13:23,337 INFO L138 SettingsManager]: * Logic for external solver=AUFBV [2022-12-13 21:13:23,337 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 21:13:23,337 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_08136510-8e14-4c65-9e2c-741904b6a3e7/bin/uautomizer-uyxdKDjOR8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08136510-8e14-4c65-9e2c-741904b6a3e7/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e403b28035008257649d82a96310933a0e656461d578ec0892b41718c92e86af [2022-12-13 21:13:23,572 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 21:13:23,586 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 21:13:23,587 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 21:13:23,588 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 21:13:23,589 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 21:13:23,589 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08136510-8e14-4c65-9e2c-741904b6a3e7/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/ldv-memsafety/memleaks_test13.i [2022-12-13 21:13:26,235 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 21:13:26,437 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 21:13:26,438 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08136510-8e14-4c65-9e2c-741904b6a3e7/sv-benchmarks/c/ldv-memsafety/memleaks_test13.i [2022-12-13 21:13:26,446 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08136510-8e14-4c65-9e2c-741904b6a3e7/bin/uautomizer-uyxdKDjOR8/data/56efd6825/d4e8754aab0d48fca5c20990c7214fe4/FLAG72e8ae8ea [2022-12-13 21:13:26,458 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08136510-8e14-4c65-9e2c-741904b6a3e7/bin/uautomizer-uyxdKDjOR8/data/56efd6825/d4e8754aab0d48fca5c20990c7214fe4 [2022-12-13 21:13:26,459 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 21:13:26,460 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 21:13:26,461 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 21:13:26,461 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 21:13:26,464 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 21:13:26,464 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 09:13:26" (1/1) ... [2022-12-13 21:13:26,465 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@48e348f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:13:26, skipping insertion in model container [2022-12-13 21:13:26,465 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 09:13:26" (1/1) ... [2022-12-13 21:13:26,470 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 21:13:26,502 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 21:13:26,739 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 21:13:26,752 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-12-13 21:13:26,758 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 21:13:26,786 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 21:13:26,791 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 21:13:26,822 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 21:13:26,874 INFO L208 MainTranslator]: Completed translation [2022-12-13 21:13:26,875 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:13:26 WrapperNode [2022-12-13 21:13:26,875 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 21:13:26,876 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 21:13:26,876 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 21:13:26,876 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 21:13:26,883 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:13:26" (1/1) ... [2022-12-13 21:13:26,900 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:13:26" (1/1) ... [2022-12-13 21:13:26,919 INFO L138 Inliner]: procedures = 167, calls = 80, calls flagged for inlining = 21, calls inlined = 6, statements flattened = 57 [2022-12-13 21:13:26,920 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 21:13:26,920 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 21:13:26,921 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 21:13:26,921 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 21:13:26,929 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:13:26" (1/1) ... [2022-12-13 21:13:26,930 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:13:26" (1/1) ... [2022-12-13 21:13:26,932 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:13:26" (1/1) ... [2022-12-13 21:13:26,933 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:13:26" (1/1) ... [2022-12-13 21:13:26,940 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:13:26" (1/1) ... [2022-12-13 21:13:26,943 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:13:26" (1/1) ... [2022-12-13 21:13:26,945 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:13:26" (1/1) ... [2022-12-13 21:13:26,946 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:13:26" (1/1) ... [2022-12-13 21:13:26,949 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 21:13:26,949 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 21:13:26,949 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 21:13:26,950 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 21:13:26,950 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:13:26" (1/1) ... [2022-12-13 21:13:26,957 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 21:13:26,967 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08136510-8e14-4c65-9e2c-741904b6a3e7/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:13:26,977 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08136510-8e14-4c65-9e2c-741904b6a3e7/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 21:13:26,980 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08136510-8e14-4c65-9e2c-741904b6a3e7/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 21:13:27,013 INFO L130 BoogieDeclarations]: Found specification of procedure LDV_INIT_LIST_HEAD [2022-12-13 21:13:27,013 INFO L138 BoogieDeclarations]: Found implementation of procedure LDV_INIT_LIST_HEAD [2022-12-13 21:13:27,013 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_add [2022-12-13 21:13:27,013 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_add [2022-12-13 21:13:27,013 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-12-13 21:13:27,013 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-12-13 21:13:27,014 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_add [2022-12-13 21:13:27,014 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_add [2022-12-13 21:13:27,014 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-13 21:13:27,014 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 21:13:27,014 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-12-13 21:13:27,014 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-12-13 21:13:27,014 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 21:13:27,015 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-12-13 21:13:27,015 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_del [2022-12-13 21:13:27,015 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_del [2022-12-13 21:13:27,015 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 21:13:27,015 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 21:13:27,119 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 21:13:27,121 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 21:13:27,444 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 21:13:27,451 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 21:13:27,451 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-12-13 21:13:27,453 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 09:13:27 BoogieIcfgContainer [2022-12-13 21:13:27,453 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 21:13:27,455 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 21:13:27,455 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 21:13:27,458 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 21:13:27,458 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 09:13:26" (1/3) ... [2022-12-13 21:13:27,458 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4dd52c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 09:13:27, skipping insertion in model container [2022-12-13 21:13:27,458 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:13:26" (2/3) ... [2022-12-13 21:13:27,459 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4dd52c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 09:13:27, skipping insertion in model container [2022-12-13 21:13:27,459 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 09:13:27" (3/3) ... [2022-12-13 21:13:27,460 INFO L112 eAbstractionObserver]: Analyzing ICFG memleaks_test13.i [2022-12-13 21:13:27,481 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 21:13:27,481 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 32 error locations. [2022-12-13 21:13:27,517 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 21:13:27,523 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=PETRI_NET, 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;@1b9ceac4, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 21:13:27,523 INFO L358 AbstractCegarLoop]: Starting to check reachability of 32 error locations. [2022-12-13 21:13:27,526 INFO L276 IsEmpty]: Start isEmpty. Operand has 88 states, 45 states have (on average 1.8) internal successors, (81), 78 states have internal predecessors, (81), 5 states have call successors, (5), 5 states have call predecessors, (5), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-12-13 21:13:27,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-12-13 21:13:27,533 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:13:27,533 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:13:27,533 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2022-12-13 21:13:27,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:13:27,538 INFO L85 PathProgramCache]: Analyzing trace with hash 2002543009, now seen corresponding path program 1 times [2022-12-13 21:13:27,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 21:13:27,548 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [768063161] [2022-12-13 21:13:27,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:13:27,548 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 21:13:27,549 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08136510-8e14-4c65-9e2c-741904b6a3e7/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 21:13:27,550 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08136510-8e14-4c65-9e2c-741904b6a3e7/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 21:13:27,551 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08136510-8e14-4c65-9e2c-741904b6a3e7/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-12-13 21:13:27,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:13:27,667 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 9 conjunts are in the unsatisfiable core [2022-12-13 21:13:27,671 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:13:27,817 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-12-13 21:13:27,818 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2022-12-13 21:13:27,874 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:13:27,875 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 21:13:27,875 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 21:13:27,876 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [768063161] [2022-12-13 21:13:27,876 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [768063161] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:13:27,876 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:13:27,876 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 21:13:27,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742909251] [2022-12-13 21:13:27,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:13:27,882 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 21:13:27,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 21:13:27,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 21:13:27,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=30, Unknown=1, NotChecked=0, Total=42 [2022-12-13 21:13:27,909 INFO L87 Difference]: Start difference. First operand has 88 states, 45 states have (on average 1.8) internal successors, (81), 78 states have internal predecessors, (81), 5 states have call successors, (5), 5 states have call predecessors, (5), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 7 states, 6 states have (on average 1.5) internal successors, (9), 5 states have internal predecessors, (9), 1 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) [2022-12-13 21:13:28,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:13:28,976 INFO L93 Difference]: Finished difference Result 129 states and 131 transitions. [2022-12-13 21:13:28,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 21:13:28,978 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.5) internal successors, (9), 5 states have internal predecessors, (9), 1 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 12 [2022-12-13 21:13:28,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:13:28,987 INFO L225 Difference]: With dead ends: 129 [2022-12-13 21:13:28,987 INFO L226 Difference]: Without dead ends: 125 [2022-12-13 21:13:28,988 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=39, Invalid=70, Unknown=1, NotChecked=0, Total=110 [2022-12-13 21:13:28,991 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 170 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 287 mSolverCounterSat, 17 mSolverCounterUnsat, 30 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 173 SdHoareTripleChecker+Valid, 134 SdHoareTripleChecker+Invalid, 334 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 287 IncrementalHoareTripleChecker+Invalid, 30 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-12-13 21:13:28,991 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [173 Valid, 134 Invalid, 334 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 287 Invalid, 30 Unknown, 0 Unchecked, 0.5s Time] [2022-12-13 21:13:29,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2022-12-13 21:13:29,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 84. [2022-12-13 21:13:29,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 44 states have (on average 1.7272727272727273) internal successors, (76), 74 states have internal predecessors, (76), 5 states have call successors, (5), 5 states have call predecessors, (5), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-12-13 21:13:29,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 86 transitions. [2022-12-13 21:13:29,020 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 86 transitions. Word has length 12 [2022-12-13 21:13:29,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:13:29,021 INFO L495 AbstractCegarLoop]: Abstraction has 84 states and 86 transitions. [2022-12-13 21:13:29,021 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.5) internal successors, (9), 5 states have internal predecessors, (9), 1 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) [2022-12-13 21:13:29,021 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 86 transitions. [2022-12-13 21:13:29,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-12-13 21:13:29,021 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:13:29,022 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:13:29,030 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08136510-8e14-4c65-9e2c-741904b6a3e7/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-12-13 21:13:29,222 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08136510-8e14-4c65-9e2c-741904b6a3e7/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 21:13:29,223 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2022-12-13 21:13:29,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:13:29,224 INFO L85 PathProgramCache]: Analyzing trace with hash 2002543010, now seen corresponding path program 1 times [2022-12-13 21:13:29,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 21:13:29,225 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1948518966] [2022-12-13 21:13:29,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:13:29,225 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 21:13:29,225 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08136510-8e14-4c65-9e2c-741904b6a3e7/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 21:13:29,227 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08136510-8e14-4c65-9e2c-741904b6a3e7/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 21:13:29,228 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08136510-8e14-4c65-9e2c-741904b6a3e7/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-12-13 21:13:29,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:13:29,386 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 15 conjunts are in the unsatisfiable core [2022-12-13 21:13:29,389 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:13:31,530 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:13:31,531 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-12-13 21:13:31,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:13:31,618 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 21:13:31,619 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 21:13:31,619 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1948518966] [2022-12-13 21:13:31,619 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1948518966] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:13:31,619 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:13:31,619 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-13 21:13:31,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596776445] [2022-12-13 21:13:31,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:13:31,621 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 21:13:31,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 21:13:31,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 21:13:31,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=40, Unknown=2, NotChecked=0, Total=56 [2022-12-13 21:13:31,622 INFO L87 Difference]: Start difference. First operand 84 states and 86 transitions. Second operand has 8 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 6 states have internal predecessors, (9), 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) [2022-12-13 21:13:38,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:13:38,459 INFO L93 Difference]: Finished difference Result 123 states and 125 transitions. [2022-12-13 21:13:38,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-13 21:13:38,460 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 6 states have internal predecessors, (9), 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 12 [2022-12-13 21:13:38,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:13:38,461 INFO L225 Difference]: With dead ends: 123 [2022-12-13 21:13:38,462 INFO L226 Difference]: Without dead ends: 123 [2022-12-13 21:13:38,462 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 8.2s TimeCoverageRelationStatistics Valid=63, Invalid=143, Unknown=4, NotChecked=0, Total=210 [2022-12-13 21:13:38,463 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 252 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 298 mSolverCounterSat, 42 mSolverCounterUnsat, 12 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 257 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 352 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 298 IncrementalHoareTripleChecker+Invalid, 12 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-12-13 21:13:38,464 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [257 Valid, 100 Invalid, 352 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 298 Invalid, 12 Unknown, 0 Unchecked, 0.7s Time] [2022-12-13 21:13:38,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2022-12-13 21:13:38,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 82. [2022-12-13 21:13:38,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 44 states have (on average 1.6818181818181819) internal successors, (74), 72 states have internal predecessors, (74), 5 states have call successors, (5), 5 states have call predecessors, (5), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-12-13 21:13:38,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 84 transitions. [2022-12-13 21:13:38,474 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 84 transitions. Word has length 12 [2022-12-13 21:13:38,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:13:38,474 INFO L495 AbstractCegarLoop]: Abstraction has 82 states and 84 transitions. [2022-12-13 21:13:38,474 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 6 states have internal predecessors, (9), 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) [2022-12-13 21:13:38,474 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 84 transitions. [2022-12-13 21:13:38,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-12-13 21:13:38,475 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:13:38,475 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:13:38,489 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08136510-8e14-4c65-9e2c-741904b6a3e7/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2022-12-13 21:13:38,676 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08136510-8e14-4c65-9e2c-741904b6a3e7/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 21:13:38,677 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2022-12-13 21:13:38,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:13:38,680 INFO L85 PathProgramCache]: Analyzing trace with hash 663113707, now seen corresponding path program 1 times [2022-12-13 21:13:38,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 21:13:38,683 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [346774997] [2022-12-13 21:13:38,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:13:38,684 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 [2022-12-13 21:13:38,684 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08136510-8e14-4c65-9e2c-741904b6a3e7/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 21:13:38,687 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08136510-8e14-4c65-9e2c-741904b6a3e7/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 21:13:38,690 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08136510-8e14-4c65-9e2c-741904b6a3e7/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-12-13 21:13:38,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:13:38,776 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 12 conjunts are in the unsatisfiable core [2022-12-13 21:13:38,777 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:13:38,835 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-12-13 21:13:38,870 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:13:38,870 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 21:13:38,870 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 21:13:38,871 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [346774997] [2022-12-13 21:13:38,871 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [346774997] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:13:38,871 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:13:38,871 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-13 21:13:38,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762315958] [2022-12-13 21:13:38,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:13:38,872 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 21:13:38,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 21:13:38,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 21:13:38,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-12-13 21:13:38,873 INFO L87 Difference]: Start difference. First operand 82 states and 84 transitions. Second operand has 8 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 5 states have internal predecessors, (11), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-12-13 21:13:39,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:13:39,234 INFO L93 Difference]: Finished difference Result 115 states and 118 transitions. [2022-12-13 21:13:39,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-13 21:13:39,235 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 5 states have internal predecessors, (11), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2022-12-13 21:13:39,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:13:39,236 INFO L225 Difference]: With dead ends: 115 [2022-12-13 21:13:39,236 INFO L226 Difference]: Without dead ends: 115 [2022-12-13 21:13:39,236 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2022-12-13 21:13:39,237 INFO L413 NwaCegarLoop]: 64 mSDtfsCounter, 66 mSDsluCounter, 286 mSDsCounter, 0 mSdLazyCounter, 193 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 350 SdHoareTripleChecker+Invalid, 197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-13 21:13:39,237 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 350 Invalid, 197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 193 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-13 21:13:39,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2022-12-13 21:13:39,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 81. [2022-12-13 21:13:39,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 44 states have (on average 1.6590909090909092) internal successors, (73), 71 states have internal predecessors, (73), 5 states have call successors, (5), 5 states have call predecessors, (5), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-12-13 21:13:39,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 83 transitions. [2022-12-13 21:13:39,243 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 83 transitions. Word has length 15 [2022-12-13 21:13:39,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:13:39,243 INFO L495 AbstractCegarLoop]: Abstraction has 81 states and 83 transitions. [2022-12-13 21:13:39,243 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 5 states have internal predecessors, (11), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-12-13 21:13:39,243 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 83 transitions. [2022-12-13 21:13:39,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-12-13 21:13:39,244 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:13:39,244 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:13:39,251 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08136510-8e14-4c65-9e2c-741904b6a3e7/bin/uautomizer-uyxdKDjOR8/mathsat -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)] Ended with exit code 0 [2022-12-13 21:13:39,444 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08136510-8e14-4c65-9e2c-741904b6a3e7/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 21:13:39,446 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2022-12-13 21:13:39,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:13:39,447 INFO L85 PathProgramCache]: Analyzing trace with hash 663113708, now seen corresponding path program 1 times [2022-12-13 21:13:39,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 21:13:39,449 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1963446697] [2022-12-13 21:13:39,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:13:39,450 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 21:13:39,450 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08136510-8e14-4c65-9e2c-741904b6a3e7/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 21:13:39,453 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08136510-8e14-4c65-9e2c-741904b6a3e7/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 21:13:39,456 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08136510-8e14-4c65-9e2c-741904b6a3e7/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-12-13 21:13:39,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:13:39,567 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 27 conjunts are in the unsatisfiable core [2022-12-13 21:13:39,569 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:13:41,752 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:13:41,753 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-12-13 21:13:41,907 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-12-13 21:13:41,913 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-12-13 21:13:42,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:13:42,006 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 21:13:42,006 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 21:13:42,006 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1963446697] [2022-12-13 21:13:42,006 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1963446697] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:13:42,006 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:13:42,007 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-12-13 21:13:42,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807412922] [2022-12-13 21:13:42,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:13:42,007 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-12-13 21:13:42,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 21:13:42,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-12-13 21:13:42,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=88, Unknown=2, NotChecked=0, Total=110 [2022-12-13 21:13:42,008 INFO L87 Difference]: Start difference. First operand 81 states and 83 transitions. Second operand has 11 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 8 states have internal predecessors, (11), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-12-13 21:13:47,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:13:47,315 INFO L93 Difference]: Finished difference Result 111 states and 116 transitions. [2022-12-13 21:13:47,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-13 21:13:47,316 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 8 states have internal predecessors, (11), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2022-12-13 21:13:47,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:13:47,317 INFO L225 Difference]: With dead ends: 111 [2022-12-13 21:13:47,317 INFO L226 Difference]: Without dead ends: 111 [2022-12-13 21:13:47,318 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 6.6s TimeCoverageRelationStatistics Valid=100, Invalid=318, Unknown=2, NotChecked=0, Total=420 [2022-12-13 21:13:47,318 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 130 mSDsluCounter, 231 mSDsCounter, 0 mSdLazyCounter, 421 mSolverCounterSat, 32 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 275 SdHoareTripleChecker+Invalid, 456 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 421 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-12-13 21:13:47,318 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [130 Valid, 275 Invalid, 456 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 421 Invalid, 3 Unknown, 0 Unchecked, 0.9s Time] [2022-12-13 21:13:47,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2022-12-13 21:13:47,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 80. [2022-12-13 21:13:47,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 44 states have (on average 1.6363636363636365) internal successors, (72), 70 states have internal predecessors, (72), 5 states have call successors, (5), 5 states have call predecessors, (5), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-12-13 21:13:47,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 82 transitions. [2022-12-13 21:13:47,322 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 82 transitions. Word has length 15 [2022-12-13 21:13:47,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:13:47,322 INFO L495 AbstractCegarLoop]: Abstraction has 80 states and 82 transitions. [2022-12-13 21:13:47,322 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 8 states have internal predecessors, (11), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-12-13 21:13:47,322 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 82 transitions. [2022-12-13 21:13:47,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-12-13 21:13:47,323 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:13:47,323 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:13:47,331 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08136510-8e14-4c65-9e2c-741904b6a3e7/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Ended with exit code 0 [2022-12-13 21:13:47,523 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08136510-8e14-4c65-9e2c-741904b6a3e7/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 21:13:47,524 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2022-12-13 21:13:47,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:13:47,526 INFO L85 PathProgramCache]: Analyzing trace with hash 1949585109, now seen corresponding path program 1 times [2022-12-13 21:13:47,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 21:13:47,527 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2058772801] [2022-12-13 21:13:47,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:13:47,528 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 21:13:47,528 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08136510-8e14-4c65-9e2c-741904b6a3e7/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 21:13:47,529 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08136510-8e14-4c65-9e2c-741904b6a3e7/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 21:13:47,530 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08136510-8e14-4c65-9e2c-741904b6a3e7/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-12-13 21:13:47,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:13:47,577 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 21:13:47,578 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:13:47,595 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:13:47,596 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 21:13:47,596 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 21:13:47,596 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2058772801] [2022-12-13 21:13:47,596 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2058772801] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:13:47,596 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:13:47,596 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 21:13:47,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519887449] [2022-12-13 21:13:47,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:13:47,597 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 21:13:47,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 21:13:47,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 21:13:47,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 21:13:47,598 INFO L87 Difference]: Start difference. First operand 80 states and 82 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 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) [2022-12-13 21:13:47,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:13:47,613 INFO L93 Difference]: Finished difference Result 110 states and 115 transitions. [2022-12-13 21:13:47,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 21:13:47,613 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 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 13 [2022-12-13 21:13:47,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:13:47,614 INFO L225 Difference]: With dead ends: 110 [2022-12-13 21:13:47,614 INFO L226 Difference]: Without dead ends: 110 [2022-12-13 21:13:47,615 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 21:13:47,615 INFO L413 NwaCegarLoop]: 108 mSDtfsCounter, 24 mSDsluCounter, 289 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 397 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 21:13:47,615 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 397 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 21:13:47,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2022-12-13 21:13:47,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 84. [2022-12-13 21:13:47,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 47 states have (on average 1.5957446808510638) internal successors, (75), 73 states have internal predecessors, (75), 5 states have call successors, (5), 5 states have call predecessors, (5), 6 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2022-12-13 21:13:47,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 86 transitions. [2022-12-13 21:13:47,620 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 86 transitions. Word has length 13 [2022-12-13 21:13:47,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:13:47,620 INFO L495 AbstractCegarLoop]: Abstraction has 84 states and 86 transitions. [2022-12-13 21:13:47,621 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 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) [2022-12-13 21:13:47,621 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 86 transitions. [2022-12-13 21:13:47,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-12-13 21:13:47,621 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:13:47,621 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:13:47,632 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08136510-8e14-4c65-9e2c-741904b6a3e7/bin/uautomizer-uyxdKDjOR8/mathsat -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)] Ended with exit code 0 [2022-12-13 21:13:47,822 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08136510-8e14-4c65-9e2c-741904b6a3e7/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 21:13:47,822 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2022-12-13 21:13:47,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:13:47,824 INFO L85 PathProgramCache]: Analyzing trace with hash 142130646, now seen corresponding path program 1 times [2022-12-13 21:13:47,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 21:13:47,825 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [858585166] [2022-12-13 21:13:47,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:13:47,826 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 21:13:47,827 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08136510-8e14-4c65-9e2c-741904b6a3e7/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 21:13:47,829 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08136510-8e14-4c65-9e2c-741904b6a3e7/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 21:13:47,832 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08136510-8e14-4c65-9e2c-741904b6a3e7/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-12-13 21:13:47,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:13:47,905 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 14 conjunts are in the unsatisfiable core [2022-12-13 21:13:47,906 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:13:48,084 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-12-13 21:13:48,092 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-12-13 21:13:48,131 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:13:48,132 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 21:13:48,132 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 21:13:48,132 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [858585166] [2022-12-13 21:13:48,132 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [858585166] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:13:48,132 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:13:48,132 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 21:13:48,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851426091] [2022-12-13 21:13:48,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:13:48,133 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 21:13:48,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 21:13:48,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 21:13:48,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-12-13 21:13:48,134 INFO L87 Difference]: Start difference. First operand 84 states and 86 transitions. Second operand has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 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) [2022-12-13 21:13:48,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:13:48,617 INFO L93 Difference]: Finished difference Result 109 states and 113 transitions. [2022-12-13 21:13:48,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 21:13:48,618 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 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 13 [2022-12-13 21:13:48,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:13:48,618 INFO L225 Difference]: With dead ends: 109 [2022-12-13 21:13:48,618 INFO L226 Difference]: Without dead ends: 109 [2022-12-13 21:13:48,619 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-12-13 21:13:48,619 INFO L413 NwaCegarLoop]: 76 mSDtfsCounter, 36 mSDsluCounter, 160 mSDsCounter, 0 mSdLazyCounter, 214 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 236 SdHoareTripleChecker+Invalid, 223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-12-13 21:13:48,619 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 236 Invalid, 223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 214 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-12-13 21:13:48,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2022-12-13 21:13:48,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 90. [2022-12-13 21:13:48,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 53 states have (on average 1.5471698113207548) internal successors, (82), 78 states have internal predecessors, (82), 5 states have call successors, (5), 5 states have call predecessors, (5), 6 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2022-12-13 21:13:48,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 93 transitions. [2022-12-13 21:13:48,623 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 93 transitions. Word has length 13 [2022-12-13 21:13:48,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:13:48,623 INFO L495 AbstractCegarLoop]: Abstraction has 90 states and 93 transitions. [2022-12-13 21:13:48,623 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 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) [2022-12-13 21:13:48,624 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 93 transitions. [2022-12-13 21:13:48,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-12-13 21:13:48,624 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:13:48,624 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:13:48,645 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08136510-8e14-4c65-9e2c-741904b6a3e7/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-12-13 21:13:48,825 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08136510-8e14-4c65-9e2c-741904b6a3e7/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 21:13:48,826 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2022-12-13 21:13:48,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:13:48,827 INFO L85 PathProgramCache]: Analyzing trace with hash 142130645, now seen corresponding path program 1 times [2022-12-13 21:13:48,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 21:13:48,829 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1835451493] [2022-12-13 21:13:48,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:13:48,830 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 21:13:48,831 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08136510-8e14-4c65-9e2c-741904b6a3e7/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 21:13:48,834 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08136510-8e14-4c65-9e2c-741904b6a3e7/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 21:13:48,837 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08136510-8e14-4c65-9e2c-741904b6a3e7/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-12-13 21:13:48,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:13:48,910 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 9 conjunts are in the unsatisfiable core [2022-12-13 21:13:48,910 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:13:48,988 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-12-13 21:13:49,010 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:13:49,010 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 21:13:49,010 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 21:13:49,010 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1835451493] [2022-12-13 21:13:49,010 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1835451493] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:13:49,011 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:13:49,011 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 21:13:49,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196361427] [2022-12-13 21:13:49,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:13:49,011 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 21:13:49,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 21:13:49,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 21:13:49,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-12-13 21:13:49,012 INFO L87 Difference]: Start difference. First operand 90 states and 93 transitions. Second operand has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 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) [2022-12-13 21:13:49,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:13:49,398 INFO L93 Difference]: Finished difference Result 104 states and 105 transitions. [2022-12-13 21:13:49,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 21:13:49,398 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 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 13 [2022-12-13 21:13:49,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:13:49,399 INFO L225 Difference]: With dead ends: 104 [2022-12-13 21:13:49,399 INFO L226 Difference]: Without dead ends: 104 [2022-12-13 21:13:49,399 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-12-13 21:13:49,400 INFO L413 NwaCegarLoop]: 63 mSDtfsCounter, 39 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 214 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 182 SdHoareTripleChecker+Invalid, 226 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-13 21:13:49,401 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 182 Invalid, 226 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 214 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-13 21:13:49,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2022-12-13 21:13:49,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 90. [2022-12-13 21:13:49,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 53 states have (on average 1.528301886792453) internal successors, (81), 78 states have internal predecessors, (81), 5 states have call successors, (5), 5 states have call predecessors, (5), 6 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2022-12-13 21:13:49,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 92 transitions. [2022-12-13 21:13:49,405 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 92 transitions. Word has length 13 [2022-12-13 21:13:49,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:13:49,405 INFO L495 AbstractCegarLoop]: Abstraction has 90 states and 92 transitions. [2022-12-13 21:13:49,405 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 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) [2022-12-13 21:13:49,406 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 92 transitions. [2022-12-13 21:13:49,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-12-13 21:13:49,406 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:13:49,406 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:13:49,414 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08136510-8e14-4c65-9e2c-741904b6a3e7/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Ended with exit code 0 [2022-12-13 21:13:49,606 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08136510-8e14-4c65-9e2c-741904b6a3e7/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 21:13:49,608 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __ldv_list_addErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2022-12-13 21:13:49,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:13:49,609 INFO L85 PathProgramCache]: Analyzing trace with hash -918311498, now seen corresponding path program 1 times [2022-12-13 21:13:49,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 21:13:49,610 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [374375913] [2022-12-13 21:13:49,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:13:49,610 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 21:13:49,611 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08136510-8e14-4c65-9e2c-741904b6a3e7/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 21:13:49,613 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08136510-8e14-4c65-9e2c-741904b6a3e7/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 21:13:49,616 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08136510-8e14-4c65-9e2c-741904b6a3e7/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-12-13 21:13:49,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:13:49,673 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 9 conjunts are in the unsatisfiable core [2022-12-13 21:13:49,674 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:13:49,678 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-12-13 21:13:49,756 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:13:49,756 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 21:13:49,757 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 21:13:49,757 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [374375913] [2022-12-13 21:13:49,757 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [374375913] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:13:49,757 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:13:49,757 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-13 21:13:49,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443279178] [2022-12-13 21:13:49,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:13:49,757 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-13 21:13:49,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 21:13:49,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-13 21:13:49,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-12-13 21:13:49,758 INFO L87 Difference]: Start difference. First operand 90 states and 92 transitions. Second operand has 9 states, 8 states have (on average 1.5) internal successors, (12), 6 states have internal predecessors, (12), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-12-13 21:13:50,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:13:50,278 INFO L93 Difference]: Finished difference Result 127 states and 131 transitions. [2022-12-13 21:13:50,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-13 21:13:50,279 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 1.5) internal successors, (12), 6 states have internal predecessors, (12), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2022-12-13 21:13:50,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:13:50,280 INFO L225 Difference]: With dead ends: 127 [2022-12-13 21:13:50,280 INFO L226 Difference]: Without dead ends: 127 [2022-12-13 21:13:50,280 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-12-13 21:13:50,280 INFO L413 NwaCegarLoop]: 81 mSDtfsCounter, 47 mSDsluCounter, 338 mSDsCounter, 0 mSdLazyCounter, 362 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 419 SdHoareTripleChecker+Invalid, 367 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 362 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-12-13 21:13:50,281 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 419 Invalid, 367 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 362 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-12-13 21:13:50,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2022-12-13 21:13:50,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 103. [2022-12-13 21:13:50,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 63 states have (on average 1.492063492063492) internal successors, (94), 88 states have internal predecessors, (94), 7 states have call successors, (7), 7 states have call predecessors, (7), 8 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2022-12-13 21:13:50,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 109 transitions. [2022-12-13 21:13:50,284 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 109 transitions. Word has length 16 [2022-12-13 21:13:50,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:13:50,284 INFO L495 AbstractCegarLoop]: Abstraction has 103 states and 109 transitions. [2022-12-13 21:13:50,284 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 1.5) internal successors, (12), 6 states have internal predecessors, (12), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-12-13 21:13:50,284 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 109 transitions. [2022-12-13 21:13:50,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-12-13 21:13:50,284 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:13:50,285 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:13:50,294 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08136510-8e14-4c65-9e2c-741904b6a3e7/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Ended with exit code 0 [2022-12-13 21:13:50,485 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08136510-8e14-4c65-9e2c-741904b6a3e7/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 21:13:50,486 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __ldv_list_addErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2022-12-13 21:13:50,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:13:50,488 INFO L85 PathProgramCache]: Analyzing trace with hash -918311497, now seen corresponding path program 1 times [2022-12-13 21:13:50,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 21:13:50,489 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1338313674] [2022-12-13 21:13:50,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:13:50,490 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 21:13:50,491 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08136510-8e14-4c65-9e2c-741904b6a3e7/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 21:13:50,494 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08136510-8e14-4c65-9e2c-741904b6a3e7/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 21:13:50,497 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08136510-8e14-4c65-9e2c-741904b6a3e7/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-12-13 21:13:50,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:13:50,615 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 18 conjunts are in the unsatisfiable core [2022-12-13 21:13:50,617 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:13:50,628 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-13 21:13:50,747 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:13:50,748 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 21:13:50,748 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 21:13:50,748 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1338313674] [2022-12-13 21:13:50,748 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1338313674] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:13:50,748 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:13:50,748 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-12-13 21:13:50,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208612934] [2022-12-13 21:13:50,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:13:50,748 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-13 21:13:50,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 21:13:50,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-13 21:13:50,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-12-13 21:13:50,749 INFO L87 Difference]: Start difference. First operand 103 states and 109 transitions. Second operand has 10 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 7 states have internal predecessors, (12), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-12-13 21:13:51,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:13:51,385 INFO L93 Difference]: Finished difference Result 130 states and 134 transitions. [2022-12-13 21:13:51,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-13 21:13:51,385 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 7 states have internal predecessors, (12), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2022-12-13 21:13:51,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:13:51,386 INFO L225 Difference]: With dead ends: 130 [2022-12-13 21:13:51,386 INFO L226 Difference]: Without dead ends: 130 [2022-12-13 21:13:51,386 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2022-12-13 21:13:51,387 INFO L413 NwaCegarLoop]: 76 mSDtfsCounter, 47 mSDsluCounter, 427 mSDsCounter, 0 mSdLazyCounter, 333 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 503 SdHoareTripleChecker+Invalid, 336 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 333 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-12-13 21:13:51,387 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 503 Invalid, 336 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 333 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-12-13 21:13:51,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2022-12-13 21:13:51,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 103. [2022-12-13 21:13:51,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 63 states have (on average 1.4603174603174602) internal successors, (92), 88 states have internal predecessors, (92), 7 states have call successors, (7), 7 states have call predecessors, (7), 8 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2022-12-13 21:13:51,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 107 transitions. [2022-12-13 21:13:51,392 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 107 transitions. Word has length 16 [2022-12-13 21:13:51,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:13:51,392 INFO L495 AbstractCegarLoop]: Abstraction has 103 states and 107 transitions. [2022-12-13 21:13:51,392 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 7 states have internal predecessors, (12), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-12-13 21:13:51,392 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 107 transitions. [2022-12-13 21:13:51,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-12-13 21:13:51,393 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:13:51,393 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:13:51,400 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08136510-8e14-4c65-9e2c-741904b6a3e7/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Ended with exit code 0 [2022-12-13 21:13:51,593 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08136510-8e14-4c65-9e2c-741904b6a3e7/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 21:13:51,594 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __ldv_list_addErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2022-12-13 21:13:51,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:13:51,596 INFO L85 PathProgramCache]: Analyzing trace with hash -789228779, now seen corresponding path program 1 times [2022-12-13 21:13:51,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 21:13:51,597 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [157127014] [2022-12-13 21:13:51,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:13:51,598 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 21:13:51,598 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08136510-8e14-4c65-9e2c-741904b6a3e7/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 21:13:51,600 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08136510-8e14-4c65-9e2c-741904b6a3e7/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 21:13:51,601 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08136510-8e14-4c65-9e2c-741904b6a3e7/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-12-13 21:13:51,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:13:51,659 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-13 21:13:51,660 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:13:51,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:13:51,695 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 21:13:51,695 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 21:13:51,695 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [157127014] [2022-12-13 21:13:51,696 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [157127014] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:13:51,696 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:13:51,696 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 21:13:51,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760269760] [2022-12-13 21:13:51,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:13:51,696 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 21:13:51,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 21:13:51,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 21:13:51,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 21:13:51,697 INFO L87 Difference]: Start difference. First operand 103 states and 107 transitions. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-12-13 21:13:51,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:13:51,712 INFO L93 Difference]: Finished difference Result 91 states and 92 transitions. [2022-12-13 21:13:51,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 21:13:51,712 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2022-12-13 21:13:51,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:13:51,713 INFO L225 Difference]: With dead ends: 91 [2022-12-13 21:13:51,713 INFO L226 Difference]: Without dead ends: 91 [2022-12-13 21:13:51,713 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 21:13:51,713 INFO L413 NwaCegarLoop]: 80 mSDtfsCounter, 10 mSDsluCounter, 228 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 308 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 21:13:51,714 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 308 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 21:13:51,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2022-12-13 21:13:51,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 86. [2022-12-13 21:13:51,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 53 states have (on average 1.4339622641509433) internal successors, (76), 74 states have internal predecessors, (76), 5 states have call successors, (5), 5 states have call predecessors, (5), 6 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2022-12-13 21:13:51,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 87 transitions. [2022-12-13 21:13:51,716 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 87 transitions. Word has length 16 [2022-12-13 21:13:51,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:13:51,717 INFO L495 AbstractCegarLoop]: Abstraction has 86 states and 87 transitions. [2022-12-13 21:13:51,717 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-12-13 21:13:51,717 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 87 transitions. [2022-12-13 21:13:51,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-12-13 21:13:51,717 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:13:51,717 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:13:51,724 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08136510-8e14-4c65-9e2c-741904b6a3e7/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Ended with exit code 0 [2022-12-13 21:13:51,918 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08136510-8e14-4c65-9e2c-741904b6a3e7/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 21:13:51,919 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __ldv_list_addErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2022-12-13 21:13:51,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:13:51,920 INFO L85 PathProgramCache]: Analyzing trace with hash -2029051719, now seen corresponding path program 1 times [2022-12-13 21:13:51,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 21:13:51,920 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [167776229] [2022-12-13 21:13:51,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:13:51,921 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 21:13:51,921 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08136510-8e14-4c65-9e2c-741904b6a3e7/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 21:13:51,922 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08136510-8e14-4c65-9e2c-741904b6a3e7/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 21:13:51,923 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08136510-8e14-4c65-9e2c-741904b6a3e7/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-12-13 21:13:52,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:13:52,007 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 21:13:52,008 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:13:52,030 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:13:52,030 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 21:13:52,030 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 21:13:52,030 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [167776229] [2022-12-13 21:13:52,030 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [167776229] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:13:52,030 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:13:52,031 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 21:13:52,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152372316] [2022-12-13 21:13:52,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:13:52,031 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 21:13:52,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 21:13:52,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 21:13:52,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 21:13:52,032 INFO L87 Difference]: Start difference. First operand 86 states and 87 transitions. Second operand has 5 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-12-13 21:13:52,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:13:52,171 INFO L93 Difference]: Finished difference Result 85 states and 86 transitions. [2022-12-13 21:13:52,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 21:13:52,171 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 18 [2022-12-13 21:13:52,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:13:52,172 INFO L225 Difference]: With dead ends: 85 [2022-12-13 21:13:52,172 INFO L226 Difference]: Without dead ends: 85 [2022-12-13 21:13:52,172 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-12-13 21:13:52,173 INFO L413 NwaCegarLoop]: 70 mSDtfsCounter, 12 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 197 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 21:13:52,173 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 197 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 21:13:52,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2022-12-13 21:13:52,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2022-12-13 21:13:52,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 53 states have (on average 1.4150943396226414) internal successors, (75), 73 states have internal predecessors, (75), 5 states have call successors, (5), 5 states have call predecessors, (5), 6 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2022-12-13 21:13:52,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 86 transitions. [2022-12-13 21:13:52,175 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 86 transitions. Word has length 18 [2022-12-13 21:13:52,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:13:52,176 INFO L495 AbstractCegarLoop]: Abstraction has 85 states and 86 transitions. [2022-12-13 21:13:52,176 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-12-13 21:13:52,176 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 86 transitions. [2022-12-13 21:13:52,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-12-13 21:13:52,176 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:13:52,176 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:13:52,192 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08136510-8e14-4c65-9e2c-741904b6a3e7/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Ended with exit code 0 [2022-12-13 21:13:52,377 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08136510-8e14-4c65-9e2c-741904b6a3e7/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 21:13:52,378 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __ldv_list_addErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2022-12-13 21:13:52,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:13:52,379 INFO L85 PathProgramCache]: Analyzing trace with hash -2029051718, now seen corresponding path program 1 times [2022-12-13 21:13:52,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 21:13:52,380 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1419983292] [2022-12-13 21:13:52,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:13:52,381 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 21:13:52,381 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08136510-8e14-4c65-9e2c-741904b6a3e7/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 21:13:52,383 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08136510-8e14-4c65-9e2c-741904b6a3e7/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 21:13:52,386 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08136510-8e14-4c65-9e2c-741904b6a3e7/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-12-13 21:13:52,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:13:52,545 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2022-12-13 21:13:52,546 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:13:52,656 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:13:52,656 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 21:13:52,656 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 21:13:52,657 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1419983292] [2022-12-13 21:13:52,657 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1419983292] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:13:52,657 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:13:52,657 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-13 21:13:52,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373422396] [2022-12-13 21:13:52,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:13:52,657 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 21:13:52,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 21:13:52,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 21:13:52,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-12-13 21:13:52,658 INFO L87 Difference]: Start difference. First operand 85 states and 86 transitions. Second operand has 8 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 5 states have internal predecessors, (14), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-12-13 21:13:52,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:13:52,940 INFO L93 Difference]: Finished difference Result 84 states and 85 transitions. [2022-12-13 21:13:52,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-13 21:13:52,941 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 5 states have internal predecessors, (14), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 18 [2022-12-13 21:13:52,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:13:52,942 INFO L225 Difference]: With dead ends: 84 [2022-12-13 21:13:52,942 INFO L226 Difference]: Without dead ends: 84 [2022-12-13 21:13:52,942 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2022-12-13 21:13:52,943 INFO L413 NwaCegarLoop]: 64 mSDtfsCounter, 80 mSDsluCounter, 209 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 273 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-13 21:13:52,943 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 273 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-13 21:13:52,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2022-12-13 21:13:52,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84. [2022-12-13 21:13:52,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 53 states have (on average 1.3962264150943395) internal successors, (74), 72 states have internal predecessors, (74), 5 states have call successors, (5), 5 states have call predecessors, (5), 6 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2022-12-13 21:13:52,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 85 transitions. [2022-12-13 21:13:52,945 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 85 transitions. Word has length 18 [2022-12-13 21:13:52,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:13:52,945 INFO L495 AbstractCegarLoop]: Abstraction has 84 states and 85 transitions. [2022-12-13 21:13:52,946 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 5 states have internal predecessors, (14), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-12-13 21:13:52,946 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 85 transitions. [2022-12-13 21:13:52,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-12-13 21:13:52,946 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:13:52,946 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:13:52,953 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08136510-8e14-4c65-9e2c-741904b6a3e7/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Ended with exit code 0 [2022-12-13 21:13:53,147 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08136510-8e14-4c65-9e2c-741904b6a3e7/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 21:13:53,147 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2022-12-13 21:13:53,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:13:53,149 INFO L85 PathProgramCache]: Analyzing trace with hash -781083149, now seen corresponding path program 1 times [2022-12-13 21:13:53,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 21:13:53,149 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1387585233] [2022-12-13 21:13:53,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:13:53,150 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 21:13:53,150 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08136510-8e14-4c65-9e2c-741904b6a3e7/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 21:13:53,153 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08136510-8e14-4c65-9e2c-741904b6a3e7/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 21:13:53,156 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08136510-8e14-4c65-9e2c-741904b6a3e7/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2022-12-13 21:13:53,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:13:53,249 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-13 21:13:53,250 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:13:53,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:13:53,357 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 21:13:53,357 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 21:13:53,358 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1387585233] [2022-12-13 21:13:53,358 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1387585233] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:13:53,358 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:13:53,358 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 21:13:53,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285521531] [2022-12-13 21:13:53,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:13:53,358 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 21:13:53,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 21:13:53,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 21:13:53,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-12-13 21:13:53,359 INFO L87 Difference]: Start difference. First operand 84 states and 85 transitions. Second operand has 6 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 1 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) [2022-12-13 21:13:53,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:13:53,709 INFO L93 Difference]: Finished difference Result 121 states and 122 transitions. [2022-12-13 21:13:53,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 21:13:53,709 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 1 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 19 [2022-12-13 21:13:53,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:13:53,710 INFO L225 Difference]: With dead ends: 121 [2022-12-13 21:13:53,710 INFO L226 Difference]: Without dead ends: 121 [2022-12-13 21:13:53,710 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-12-13 21:13:53,711 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 94 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 223 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 232 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-13 21:13:53,711 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 124 Invalid, 232 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 223 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-13 21:13:53,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2022-12-13 21:13:53,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 92. [2022-12-13 21:13:53,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 59 states have (on average 1.4067796610169492) internal successors, (83), 79 states have internal predecessors, (83), 6 states have call successors, (6), 6 states have call predecessors, (6), 7 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2022-12-13 21:13:53,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 96 transitions. [2022-12-13 21:13:53,713 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 96 transitions. Word has length 19 [2022-12-13 21:13:53,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:13:53,713 INFO L495 AbstractCegarLoop]: Abstraction has 92 states and 96 transitions. [2022-12-13 21:13:53,713 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 1 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) [2022-12-13 21:13:53,714 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 96 transitions. [2022-12-13 21:13:53,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-12-13 21:13:53,714 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:13:53,714 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:13:53,721 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08136510-8e14-4c65-9e2c-741904b6a3e7/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2022-12-13 21:13:53,915 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08136510-8e14-4c65-9e2c-741904b6a3e7/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 21:13:53,915 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2022-12-13 21:13:53,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:13:53,915 INFO L85 PathProgramCache]: Analyzing trace with hash -781083148, now seen corresponding path program 1 times [2022-12-13 21:13:53,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 21:13:53,915 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1823246375] [2022-12-13 21:13:53,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:13:53,916 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 21:13:53,916 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08136510-8e14-4c65-9e2c-741904b6a3e7/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 21:13:53,917 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08136510-8e14-4c65-9e2c-741904b6a3e7/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 21:13:53,917 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08136510-8e14-4c65-9e2c-741904b6a3e7/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2022-12-13 21:13:53,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:13:53,959 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 10 conjunts are in the unsatisfiable core [2022-12-13 21:13:53,960 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:13:54,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:13:54,122 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 21:13:54,122 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 21:13:54,123 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1823246375] [2022-12-13 21:13:54,123 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1823246375] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:13:54,123 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:13:54,123 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 21:13:54,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803151719] [2022-12-13 21:13:54,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:13:54,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 21:13:54,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 21:13:54,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 21:13:54,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-12-13 21:13:54,124 INFO L87 Difference]: Start difference. First operand 92 states and 96 transitions. Second operand has 6 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 1 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) [2022-12-13 21:13:54,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:13:54,473 INFO L93 Difference]: Finished difference Result 102 states and 105 transitions. [2022-12-13 21:13:54,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 21:13:54,473 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 1 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 19 [2022-12-13 21:13:54,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:13:54,474 INFO L225 Difference]: With dead ends: 102 [2022-12-13 21:13:54,474 INFO L226 Difference]: Without dead ends: 102 [2022-12-13 21:13:54,474 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-12-13 21:13:54,475 INFO L413 NwaCegarLoop]: 70 mSDtfsCounter, 22 mSDsluCounter, 167 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 237 SdHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-13 21:13:54,475 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 237 Invalid, 151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 149 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-13 21:13:54,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2022-12-13 21:13:54,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 99. [2022-12-13 21:13:54,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 64 states have (on average 1.375) internal successors, (88), 85 states have internal predecessors, (88), 7 states have call successors, (7), 7 states have call predecessors, (7), 8 states have return successors, (8), 6 states have call predecessors, (8), 7 states have call successors, (8) [2022-12-13 21:13:54,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 103 transitions. [2022-12-13 21:13:54,478 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 103 transitions. Word has length 19 [2022-12-13 21:13:54,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:13:54,479 INFO L495 AbstractCegarLoop]: Abstraction has 99 states and 103 transitions. [2022-12-13 21:13:54,479 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 1 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) [2022-12-13 21:13:54,479 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 103 transitions. [2022-12-13 21:13:54,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-12-13 21:13:54,479 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:13:54,479 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:13:54,492 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08136510-8e14-4c65-9e2c-741904b6a3e7/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Ended with exit code 0 [2022-12-13 21:13:54,680 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08136510-8e14-4c65-9e2c-741904b6a3e7/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 21:13:54,681 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2022-12-13 21:13:54,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:13:54,682 INFO L85 PathProgramCache]: Analyzing trace with hash -151348929, now seen corresponding path program 1 times [2022-12-13 21:13:54,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 21:13:54,683 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1655503229] [2022-12-13 21:13:54,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:13:54,684 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 [2022-12-13 21:13:54,684 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08136510-8e14-4c65-9e2c-741904b6a3e7/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 21:13:54,687 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08136510-8e14-4c65-9e2c-741904b6a3e7/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 21:13:54,689 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08136510-8e14-4c65-9e2c-741904b6a3e7/bin/uautomizer-uyxdKDjOR8/mathsat -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 [2022-12-13 21:13:54,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:13:54,749 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 21:13:54,749 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:13:54,781 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:13:54,781 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 21:13:54,781 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 21:13:54,781 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1655503229] [2022-12-13 21:13:54,782 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1655503229] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:13:54,782 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:13:54,782 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 21:13:54,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099383171] [2022-12-13 21:13:54,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:13:54,782 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 21:13:54,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 21:13:54,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 21:13:54,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 21:13:54,783 INFO L87 Difference]: Start difference. First operand 99 states and 103 transitions. Second operand has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-12-13 21:13:54,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:13:54,963 INFO L93 Difference]: Finished difference Result 101 states and 104 transitions. [2022-12-13 21:13:54,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 21:13:54,964 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 24 [2022-12-13 21:13:54,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:13:54,965 INFO L225 Difference]: With dead ends: 101 [2022-12-13 21:13:54,965 INFO L226 Difference]: Without dead ends: 82 [2022-12-13 21:13:54,965 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 21:13:54,965 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 35 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-13 21:13:54,966 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 83 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-13 21:13:54,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2022-12-13 21:13:54,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 82. [2022-12-13 21:13:54,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 50 states have (on average 1.46) internal successors, (73), 70 states have internal predecessors, (73), 6 states have call successors, (6), 6 states have call predecessors, (6), 6 states have return successors, (6), 5 states have call predecessors, (6), 6 states have call successors, (6) [2022-12-13 21:13:54,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 85 transitions. [2022-12-13 21:13:54,969 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 85 transitions. Word has length 24 [2022-12-13 21:13:54,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:13:54,969 INFO L495 AbstractCegarLoop]: Abstraction has 82 states and 85 transitions. [2022-12-13 21:13:54,969 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-12-13 21:13:54,969 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 85 transitions. [2022-12-13 21:13:54,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-12-13 21:13:54,969 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:13:54,969 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:13:54,977 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08136510-8e14-4c65-9e2c-741904b6a3e7/bin/uautomizer-uyxdKDjOR8/mathsat -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)] Ended with exit code 0 [2022-12-13 21:13:55,170 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08136510-8e14-4c65-9e2c-741904b6a3e7/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 21:13:55,171 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2022-12-13 21:13:55,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:13:55,172 INFO L85 PathProgramCache]: Analyzing trace with hash 345895671, now seen corresponding path program 1 times [2022-12-13 21:13:55,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 21:13:55,173 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1565629428] [2022-12-13 21:13:55,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:13:55,174 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 21:13:55,175 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08136510-8e14-4c65-9e2c-741904b6a3e7/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 21:13:55,177 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08136510-8e14-4c65-9e2c-741904b6a3e7/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 21:13:55,180 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08136510-8e14-4c65-9e2c-741904b6a3e7/bin/uautomizer-uyxdKDjOR8/mathsat -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 [2022-12-13 21:13:55,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:13:55,319 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 38 conjunts are in the unsatisfiable core [2022-12-13 21:13:55,322 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:13:55,332 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-13 21:13:55,547 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-13 21:13:55,552 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-13 21:13:55,704 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-12-13 21:13:55,708 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2022-12-13 21:13:55,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:13:55,772 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 21:13:55,772 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 21:13:55,773 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1565629428] [2022-12-13 21:13:55,773 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1565629428] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:13:55,773 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:13:55,773 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-12-13 21:13:55,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194357944] [2022-12-13 21:13:55,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:13:55,773 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-12-13 21:13:55,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 21:13:55,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-12-13 21:13:55,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2022-12-13 21:13:55,774 INFO L87 Difference]: Start difference. First operand 82 states and 85 transitions. Second operand has 14 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 12 states have internal predecessors, (21), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-13 21:13:56,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:13:56,916 INFO L93 Difference]: Finished difference Result 103 states and 105 transitions. [2022-12-13 21:13:56,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-12-13 21:13:56,916 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 12 states have internal predecessors, (21), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 27 [2022-12-13 21:13:56,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:13:56,917 INFO L225 Difference]: With dead ends: 103 [2022-12-13 21:13:56,917 INFO L226 Difference]: Without dead ends: 103 [2022-12-13 21:13:56,918 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=73, Invalid=347, Unknown=0, NotChecked=0, Total=420 [2022-12-13 21:13:56,918 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 98 mSDsluCounter, 302 mSDsCounter, 0 mSdLazyCounter, 504 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 337 SdHoareTripleChecker+Invalid, 513 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 504 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-12-13 21:13:56,918 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 337 Invalid, 513 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 504 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-12-13 21:13:56,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2022-12-13 21:13:56,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 83. [2022-12-13 21:13:56,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 51 states have (on average 1.4313725490196079) internal successors, (73), 70 states have internal predecessors, (73), 7 states have call successors, (7), 6 states have call predecessors, (7), 6 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2022-12-13 21:13:56,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 87 transitions. [2022-12-13 21:13:56,921 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 87 transitions. Word has length 27 [2022-12-13 21:13:56,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:13:56,921 INFO L495 AbstractCegarLoop]: Abstraction has 83 states and 87 transitions. [2022-12-13 21:13:56,922 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 12 states have internal predecessors, (21), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-13 21:13:56,922 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 87 transitions. [2022-12-13 21:13:56,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-12-13 21:13:56,922 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:13:56,922 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:13:56,933 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08136510-8e14-4c65-9e2c-741904b6a3e7/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Ended with exit code 0 [2022-12-13 21:13:57,122 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08136510-8e14-4c65-9e2c-741904b6a3e7/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 21:13:57,123 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2022-12-13 21:13:57,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:13:57,124 INFO L85 PathProgramCache]: Analyzing trace with hash 345895670, now seen corresponding path program 1 times [2022-12-13 21:13:57,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 21:13:57,126 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1672334470] [2022-12-13 21:13:57,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:13:57,127 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 21:13:57,127 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08136510-8e14-4c65-9e2c-741904b6a3e7/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 21:13:57,129 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08136510-8e14-4c65-9e2c-741904b6a3e7/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 21:13:57,129 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08136510-8e14-4c65-9e2c-741904b6a3e7/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2022-12-13 21:13:57,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:13:57,206 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 23 conjunts are in the unsatisfiable core [2022-12-13 21:13:57,208 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:13:57,211 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-12-13 21:13:57,359 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-13 21:13:57,458 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2022-12-13 21:13:57,499 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:13:57,499 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 21:13:57,499 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 21:13:57,499 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1672334470] [2022-12-13 21:13:57,499 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1672334470] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:13:57,499 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:13:57,499 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-12-13 21:13:57,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717829634] [2022-12-13 21:13:57,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:13:57,500 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-12-13 21:13:57,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 21:13:57,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-12-13 21:13:57,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2022-12-13 21:13:57,501 INFO L87 Difference]: Start difference. First operand 83 states and 87 transitions. Second operand has 13 states, 12 states have (on average 1.75) internal successors, (21), 11 states have internal predecessors, (21), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-13 21:13:58,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:13:58,515 INFO L93 Difference]: Finished difference Result 101 states and 102 transitions. [2022-12-13 21:13:58,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-12-13 21:13:58,516 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 1.75) internal successors, (21), 11 states have internal predecessors, (21), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 27 [2022-12-13 21:13:58,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:13:58,516 INFO L225 Difference]: With dead ends: 101 [2022-12-13 21:13:58,516 INFO L226 Difference]: Without dead ends: 101 [2022-12-13 21:13:58,517 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=88, Invalid=418, Unknown=0, NotChecked=0, Total=506 [2022-12-13 21:13:58,517 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 100 mSDsluCounter, 263 mSDsCounter, 0 mSdLazyCounter, 460 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 302 SdHoareTripleChecker+Invalid, 477 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 460 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-12-13 21:13:58,517 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 302 Invalid, 477 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 460 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-12-13 21:13:58,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2022-12-13 21:13:58,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 84. [2022-12-13 21:13:58,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 53 states have (on average 1.4150943396226414) internal successors, (75), 71 states have internal predecessors, (75), 7 states have call successors, (7), 6 states have call predecessors, (7), 6 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2022-12-13 21:13:58,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 89 transitions. [2022-12-13 21:13:58,520 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 89 transitions. Word has length 27 [2022-12-13 21:13:58,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:13:58,520 INFO L495 AbstractCegarLoop]: Abstraction has 84 states and 89 transitions. [2022-12-13 21:13:58,520 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 1.75) internal successors, (21), 11 states have internal predecessors, (21), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-13 21:13:58,521 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 89 transitions. [2022-12-13 21:13:58,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-12-13 21:13:58,521 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:13:58,521 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:13:58,530 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08136510-8e14-4c65-9e2c-741904b6a3e7/bin/uautomizer-uyxdKDjOR8/mathsat -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)] Ended with exit code 0 [2022-12-13 21:13:58,722 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08136510-8e14-4c65-9e2c-741904b6a3e7/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 21:13:58,723 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_list_delErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2022-12-13 21:13:58,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:13:58,724 INFO L85 PathProgramCache]: Analyzing trace with hash -566103308, now seen corresponding path program 1 times [2022-12-13 21:13:58,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 21:13:58,726 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [749878308] [2022-12-13 21:13:58,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:13:58,727 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 21:13:58,727 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08136510-8e14-4c65-9e2c-741904b6a3e7/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 21:13:58,730 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08136510-8e14-4c65-9e2c-741904b6a3e7/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 21:13:58,733 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08136510-8e14-4c65-9e2c-741904b6a3e7/bin/uautomizer-uyxdKDjOR8/mathsat -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 [2022-12-13 21:13:58,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:13:58,818 INFO L263 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 25 conjunts are in the unsatisfiable core [2022-12-13 21:13:58,822 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:13:58,825 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-12-13 21:13:58,969 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-13 21:13:59,078 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2022-12-13 21:13:59,164 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:13:59,164 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 21:13:59,164 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 21:13:59,164 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [749878308] [2022-12-13 21:13:59,164 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [749878308] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:13:59,165 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:13:59,165 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-12-13 21:13:59,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579318462] [2022-12-13 21:13:59,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:13:59,165 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-12-13 21:13:59,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 21:13:59,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-12-13 21:13:59,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2022-12-13 21:13:59,166 INFO L87 Difference]: Start difference. First operand 84 states and 89 transitions. Second operand has 15 states, 14 states have (on average 1.7857142857142858) internal successors, (25), 12 states have internal predecessors, (25), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-13 21:14:00,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:14:00,308 INFO L93 Difference]: Finished difference Result 104 states and 104 transitions. [2022-12-13 21:14:00,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-12-13 21:14:00,308 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 1.7857142857142858) internal successors, (25), 12 states have internal predecessors, (25), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 32 [2022-12-13 21:14:00,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:14:00,308 INFO L225 Difference]: With dead ends: 104 [2022-12-13 21:14:00,309 INFO L226 Difference]: Without dead ends: 104 [2022-12-13 21:14:00,309 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=112, Invalid=644, Unknown=0, NotChecked=0, Total=756 [2022-12-13 21:14:00,309 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 133 mSDsluCounter, 262 mSDsCounter, 0 mSdLazyCounter, 547 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 298 SdHoareTripleChecker+Invalid, 573 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 547 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-12-13 21:14:00,309 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [134 Valid, 298 Invalid, 573 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 547 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-12-13 21:14:00,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2022-12-13 21:14:00,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 92. [2022-12-13 21:14:00,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 61 states have (on average 1.4426229508196722) internal successors, (88), 78 states have internal predecessors, (88), 7 states have call successors, (7), 7 states have call predecessors, (7), 7 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2022-12-13 21:14:00,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 102 transitions. [2022-12-13 21:14:00,311 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 102 transitions. Word has length 32 [2022-12-13 21:14:00,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:14:00,311 INFO L495 AbstractCegarLoop]: Abstraction has 92 states and 102 transitions. [2022-12-13 21:14:00,312 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 1.7857142857142858) internal successors, (25), 12 states have internal predecessors, (25), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-13 21:14:00,312 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 102 transitions. [2022-12-13 21:14:00,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-12-13 21:14:00,312 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:14:00,312 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:14:00,320 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08136510-8e14-4c65-9e2c-741904b6a3e7/bin/uautomizer-uyxdKDjOR8/mathsat -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 [2022-12-13 21:14:00,512 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08136510-8e14-4c65-9e2c-741904b6a3e7/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 21:14:00,513 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ldv_list_delErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2022-12-13 21:14:00,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:14:00,514 INFO L85 PathProgramCache]: Analyzing trace with hash -566103307, now seen corresponding path program 1 times [2022-12-13 21:14:00,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 21:14:00,515 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1595880791] [2022-12-13 21:14:00,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:14:00,516 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 21:14:00,516 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08136510-8e14-4c65-9e2c-741904b6a3e7/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 21:14:00,519 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08136510-8e14-4c65-9e2c-741904b6a3e7/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 21:14:00,522 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08136510-8e14-4c65-9e2c-741904b6a3e7/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2022-12-13 21:14:00,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:14:00,669 INFO L263 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 42 conjunts are in the unsatisfiable core [2022-12-13 21:14:00,672 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:14:00,681 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-13 21:14:00,897 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-13 21:14:00,902 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-13 21:14:01,082 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-12-13 21:14:01,084 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2022-12-13 21:14:01,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:14:01,220 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 21:14:01,220 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 21:14:01,221 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1595880791] [2022-12-13 21:14:01,221 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1595880791] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:14:01,221 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:14:01,221 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-12-13 21:14:01,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334738570] [2022-12-13 21:14:01,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:14:01,221 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-12-13 21:14:01,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 21:14:01,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-12-13 21:14:01,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2022-12-13 21:14:01,222 INFO L87 Difference]: Start difference. First operand 92 states and 102 transitions. Second operand has 16 states, 15 states have (on average 1.6666666666666667) internal successors, (25), 13 states have internal predecessors, (25), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-13 21:14:02,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:14:02,612 INFO L93 Difference]: Finished difference Result 102 states and 103 transitions. [2022-12-13 21:14:02,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-12-13 21:14:02,612 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 1.6666666666666667) internal successors, (25), 13 states have internal predecessors, (25), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 32 [2022-12-13 21:14:02,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:14:02,613 INFO L225 Difference]: With dead ends: 102 [2022-12-13 21:14:02,613 INFO L226 Difference]: Without dead ends: 102 [2022-12-13 21:14:02,614 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=97, Invalid=553, Unknown=0, NotChecked=0, Total=650 [2022-12-13 21:14:02,614 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 109 mSDsluCounter, 319 mSDsCounter, 0 mSdLazyCounter, 571 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 353 SdHoareTripleChecker+Invalid, 581 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 571 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-12-13 21:14:02,614 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [113 Valid, 353 Invalid, 581 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 571 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-12-13 21:14:02,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2022-12-13 21:14:02,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 92. [2022-12-13 21:14:02,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 61 states have (on average 1.4098360655737705) internal successors, (86), 78 states have internal predecessors, (86), 7 states have call successors, (7), 7 states have call predecessors, (7), 7 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2022-12-13 21:14:02,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 100 transitions. [2022-12-13 21:14:02,617 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 100 transitions. Word has length 32 [2022-12-13 21:14:02,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:14:02,617 INFO L495 AbstractCegarLoop]: Abstraction has 92 states and 100 transitions. [2022-12-13 21:14:02,617 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 1.6666666666666667) internal successors, (25), 13 states have internal predecessors, (25), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-13 21:14:02,617 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 100 transitions. [2022-12-13 21:14:02,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-12-13 21:14:02,618 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:14:02,618 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:14:02,625 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08136510-8e14-4c65-9e2c-741904b6a3e7/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Ended with exit code 0 [2022-12-13 21:14:02,818 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08136510-8e14-4c65-9e2c-741904b6a3e7/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 21:14:02,819 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2022-12-13 21:14:02,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:14:02,820 INFO L85 PathProgramCache]: Analyzing trace with hash -372722091, now seen corresponding path program 1 times [2022-12-13 21:14:02,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 21:14:02,822 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [415358486] [2022-12-13 21:14:02,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:14:02,823 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 21:14:02,823 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08136510-8e14-4c65-9e2c-741904b6a3e7/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 21:14:02,826 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08136510-8e14-4c65-9e2c-741904b6a3e7/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 21:14:02,830 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08136510-8e14-4c65-9e2c-741904b6a3e7/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2022-12-13 21:14:03,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:14:03,094 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 26 conjunts are in the unsatisfiable core [2022-12-13 21:14:03,095 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:14:03,155 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-12-13 21:14:03,156 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-12-13 21:14:03,338 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-13 21:14:03,459 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 8 [2022-12-13 21:14:03,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:14:03,527 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 21:14:03,527 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 21:14:03,527 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [415358486] [2022-12-13 21:14:03,527 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [415358486] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:14:03,527 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:14:03,527 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-12-13 21:14:03,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527646358] [2022-12-13 21:14:03,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:14:03,528 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-12-13 21:14:03,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 21:14:03,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-12-13 21:14:03,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2022-12-13 21:14:03,528 INFO L87 Difference]: Start difference. First operand 92 states and 100 transitions. Second operand has 15 states, 15 states have (on average 1.7333333333333334) internal successors, (26), 12 states have internal predecessors, (26), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-13 21:14:04,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:14:04,604 INFO L93 Difference]: Finished difference Result 131 states and 133 transitions. [2022-12-13 21:14:04,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-12-13 21:14:04,604 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 1.7333333333333334) internal successors, (26), 12 states have internal predecessors, (26), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 33 [2022-12-13 21:14:04,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:14:04,605 INFO L225 Difference]: With dead ends: 131 [2022-12-13 21:14:04,605 INFO L226 Difference]: Without dead ends: 131 [2022-12-13 21:14:04,605 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=131, Invalid=625, Unknown=0, NotChecked=0, Total=756 [2022-12-13 21:14:04,606 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 234 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 703 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 236 SdHoareTripleChecker+Valid, 129 SdHoareTripleChecker+Invalid, 736 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 703 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-12-13 21:14:04,606 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [236 Valid, 129 Invalid, 736 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 703 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-12-13 21:14:04,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2022-12-13 21:14:04,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 85. [2022-12-13 21:14:04,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 56 states have (on average 1.3928571428571428) internal successors, (78), 72 states have internal predecessors, (78), 6 states have call successors, (6), 6 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-12-13 21:14:04,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 90 transitions. [2022-12-13 21:14:04,609 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 90 transitions. Word has length 33 [2022-12-13 21:14:04,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:14:04,609 INFO L495 AbstractCegarLoop]: Abstraction has 85 states and 90 transitions. [2022-12-13 21:14:04,610 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 1.7333333333333334) internal successors, (26), 12 states have internal predecessors, (26), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-13 21:14:04,610 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 90 transitions. [2022-12-13 21:14:04,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-12-13 21:14:04,610 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:14:04,610 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:14:04,633 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08136510-8e14-4c65-9e2c-741904b6a3e7/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2022-12-13 21:14:04,811 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08136510-8e14-4c65-9e2c-741904b6a3e7/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 21:14:04,811 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ldv_list_delErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2022-12-13 21:14:04,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:14:04,813 INFO L85 PathProgramCache]: Analyzing trace with hash 1552970525, now seen corresponding path program 1 times [2022-12-13 21:14:04,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 21:14:04,814 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1914458549] [2022-12-13 21:14:04,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:14:04,815 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 21:14:04,815 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08136510-8e14-4c65-9e2c-741904b6a3e7/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 21:14:04,817 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08136510-8e14-4c65-9e2c-741904b6a3e7/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 21:14:04,820 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08136510-8e14-4c65-9e2c-741904b6a3e7/bin/uautomizer-uyxdKDjOR8/mathsat -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 [2022-12-13 21:14:04,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:14:05,001 INFO L263 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 53 conjunts are in the unsatisfiable core [2022-12-13 21:14:05,004 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:14:05,085 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-12-13 21:14:05,086 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-12-13 21:14:05,144 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-12-13 21:14:05,402 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-13 21:14:05,490 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-12-13 21:14:05,543 INFO L321 Elim1Store]: treesize reduction 17, result has 46.9 percent of original size [2022-12-13 21:14:05,544 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 26 [2022-12-13 21:14:05,550 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-13 21:14:05,829 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 35 [2022-12-13 21:14:05,910 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 15 [2022-12-13 21:14:06,192 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-12-13 21:14:06,192 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 14 [2022-12-13 21:14:06,266 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:14:06,266 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 21:14:06,266 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 21:14:06,266 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1914458549] [2022-12-13 21:14:06,267 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1914458549] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:14:06,267 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:14:06,267 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-12-13 21:14:06,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074100276] [2022-12-13 21:14:06,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:14:06,267 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-12-13 21:14:06,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 21:14:06,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-12-13 21:14:06,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=412, Unknown=1, NotChecked=0, Total=462 [2022-12-13 21:14:06,268 INFO L87 Difference]: Start difference. First operand 85 states and 90 transitions. Second operand has 22 states, 20 states have (on average 1.4) internal successors, (28), 17 states have internal predecessors, (28), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-13 21:14:08,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:14:08,948 INFO L93 Difference]: Finished difference Result 89 states and 89 transitions. [2022-12-13 21:14:08,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-12-13 21:14:08,949 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 20 states have (on average 1.4) internal successors, (28), 17 states have internal predecessors, (28), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 35 [2022-12-13 21:14:08,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:14:08,949 INFO L225 Difference]: With dead ends: 89 [2022-12-13 21:14:08,949 INFO L226 Difference]: Without dead ends: 89 [2022-12-13 21:14:08,949 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 206 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=170, Invalid=1389, Unknown=1, NotChecked=0, Total=1560 [2022-12-13 21:14:08,950 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 70 mSDsluCounter, 485 mSDsCounter, 0 mSdLazyCounter, 809 mSolverCounterSat, 18 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 526 SdHoareTripleChecker+Invalid, 832 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 809 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-12-13 21:14:08,950 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 526 Invalid, 832 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 809 Invalid, 5 Unknown, 0 Unchecked, 1.5s Time] [2022-12-13 21:14:08,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2022-12-13 21:14:08,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 85. [2022-12-13 21:14:08,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 56 states have (on average 1.375) internal successors, (77), 72 states have internal predecessors, (77), 6 states have call successors, (6), 6 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-12-13 21:14:08,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 89 transitions. [2022-12-13 21:14:08,952 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 89 transitions. Word has length 35 [2022-12-13 21:14:08,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:14:08,953 INFO L495 AbstractCegarLoop]: Abstraction has 85 states and 89 transitions. [2022-12-13 21:14:08,953 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 20 states have (on average 1.4) internal successors, (28), 17 states have internal predecessors, (28), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-13 21:14:08,953 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 89 transitions. [2022-12-13 21:14:08,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-12-13 21:14:08,953 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:14:08,953 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:14:08,961 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08136510-8e14-4c65-9e2c-741904b6a3e7/bin/uautomizer-uyxdKDjOR8/mathsat -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 [2022-12-13 21:14:09,154 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08136510-8e14-4c65-9e2c-741904b6a3e7/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 21:14:09,155 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ldv_list_delErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2022-12-13 21:14:09,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:14:09,156 INFO L85 PathProgramCache]: Analyzing trace with hash 1552970526, now seen corresponding path program 1 times [2022-12-13 21:14:09,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 21:14:09,157 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [936227388] [2022-12-13 21:14:09,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:14:09,157 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 21:14:09,158 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08136510-8e14-4c65-9e2c-741904b6a3e7/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 21:14:09,160 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08136510-8e14-4c65-9e2c-741904b6a3e7/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 21:14:09,161 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08136510-8e14-4c65-9e2c-741904b6a3e7/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2022-12-13 21:14:09,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:14:09,301 INFO L263 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 70 conjunts are in the unsatisfiable core [2022-12-13 21:14:09,305 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:14:09,403 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-12-13 21:14:09,403 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-12-13 21:14:09,455 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-12-13 21:14:09,462 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-12-13 21:14:09,777 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-13 21:14:09,787 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-13 21:14:09,908 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-12-13 21:14:09,920 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-12-13 21:14:09,993 INFO L321 Elim1Store]: treesize reduction 17, result has 46.9 percent of original size [2022-12-13 21:14:09,993 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 26 [2022-12-13 21:14:10,039 INFO L321 Elim1Store]: treesize reduction 17, result has 46.9 percent of original size [2022-12-13 21:14:10,039 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 26 [2022-12-13 21:14:10,488 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 46 [2022-12-13 21:14:10,496 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 42 [2022-12-13 21:14:11,041 INFO L321 Elim1Store]: treesize reduction 15, result has 6.3 percent of original size [2022-12-13 21:14:11,042 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 69 treesize of output 36 [2022-12-13 21:14:11,046 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 10 [2022-12-13 21:14:11,170 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:14:11,170 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 21:14:11,170 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 21:14:11,170 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [936227388] [2022-12-13 21:14:11,170 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [936227388] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:14:11,170 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:14:11,170 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-12-13 21:14:11,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185120213] [2022-12-13 21:14:11,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:14:11,171 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-12-13 21:14:11,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 21:14:11,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-12-13 21:14:11,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=447, Unknown=0, NotChecked=0, Total=506 [2022-12-13 21:14:11,172 INFO L87 Difference]: Start difference. First operand 85 states and 89 transitions. Second operand has 23 states, 21 states have (on average 1.3333333333333333) internal successors, (28), 18 states have internal predecessors, (28), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-13 21:14:14,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:14:14,184 INFO L93 Difference]: Finished difference Result 87 states and 88 transitions. [2022-12-13 21:14:14,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-12-13 21:14:14,185 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 21 states have (on average 1.3333333333333333) internal successors, (28), 18 states have internal predecessors, (28), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 35 [2022-12-13 21:14:14,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:14:14,185 INFO L225 Difference]: With dead ends: 87 [2022-12-13 21:14:14,185 INFO L226 Difference]: Without dead ends: 87 [2022-12-13 21:14:14,185 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 254 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=193, Invalid=1529, Unknown=0, NotChecked=0, Total=1722 [2022-12-13 21:14:14,186 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 131 mSDsluCounter, 494 mSDsCounter, 0 mSdLazyCounter, 781 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 535 SdHoareTripleChecker+Invalid, 801 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 781 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-12-13 21:14:14,186 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [131 Valid, 535 Invalid, 801 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 781 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-12-13 21:14:14,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2022-12-13 21:14:14,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 85. [2022-12-13 21:14:14,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 56 states have (on average 1.3571428571428572) internal successors, (76), 72 states have internal predecessors, (76), 6 states have call successors, (6), 6 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-12-13 21:14:14,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 88 transitions. [2022-12-13 21:14:14,188 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 88 transitions. Word has length 35 [2022-12-13 21:14:14,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:14:14,188 INFO L495 AbstractCegarLoop]: Abstraction has 85 states and 88 transitions. [2022-12-13 21:14:14,188 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 21 states have (on average 1.3333333333333333) internal successors, (28), 18 states have internal predecessors, (28), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-13 21:14:14,188 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 88 transitions. [2022-12-13 21:14:14,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-12-13 21:14:14,189 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:14:14,189 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:14:14,197 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08136510-8e14-4c65-9e2c-741904b6a3e7/bin/uautomizer-uyxdKDjOR8/mathsat -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)] Ended with exit code 0 [2022-12-13 21:14:14,389 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08136510-8e14-4c65-9e2c-741904b6a3e7/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 21:14:14,390 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ldv_list_delErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2022-12-13 21:14:14,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:14:14,391 INFO L85 PathProgramCache]: Analyzing trace with hash 897446074, now seen corresponding path program 1 times [2022-12-13 21:14:14,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 21:14:14,392 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1778517594] [2022-12-13 21:14:14,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:14:14,393 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 21:14:14,393 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08136510-8e14-4c65-9e2c-741904b6a3e7/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 21:14:14,396 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08136510-8e14-4c65-9e2c-741904b6a3e7/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 21:14:14,398 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08136510-8e14-4c65-9e2c-741904b6a3e7/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2022-12-13 21:14:14,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:14:14,534 INFO L263 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 45 conjunts are in the unsatisfiable core [2022-12-13 21:14:14,537 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:14:14,578 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-12-13 21:14:14,579 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-12-13 21:14:14,771 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-13 21:14:14,869 INFO L321 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2022-12-13 21:14:14,869 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 20 [2022-12-13 21:14:14,874 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-13 21:14:15,128 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 17 [2022-12-13 21:14:15,402 INFO L321 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2022-12-13 21:14:15,402 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 14 [2022-12-13 21:14:15,485 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:14:15,485 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 21:14:15,485 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 21:14:15,486 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1778517594] [2022-12-13 21:14:15,486 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1778517594] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:14:15,486 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:14:15,486 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-12-13 21:14:15,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657739926] [2022-12-13 21:14:15,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:14:15,486 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-12-13 21:14:15,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 21:14:15,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-12-13 21:14:15,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=394, Unknown=4, NotChecked=0, Total=462 [2022-12-13 21:14:15,487 INFO L87 Difference]: Start difference. First operand 85 states and 88 transitions. Second operand has 22 states, 20 states have (on average 1.45) internal successors, (29), 17 states have internal predecessors, (29), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-13 21:14:19,358 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 21:14:20,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:14:20,167 INFO L93 Difference]: Finished difference Result 87 states and 87 transitions. [2022-12-13 21:14:20,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-12-13 21:14:20,167 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 20 states have (on average 1.45) internal successors, (29), 17 states have internal predecessors, (29), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 36 [2022-12-13 21:14:20,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:14:20,167 INFO L225 Difference]: With dead ends: 87 [2022-12-13 21:14:20,168 INFO L226 Difference]: Without dead ends: 87 [2022-12-13 21:14:20,168 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 318 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=271, Invalid=1525, Unknown=10, NotChecked=0, Total=1806 [2022-12-13 21:14:20,168 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 154 mSDsluCounter, 200 mSDsCounter, 0 mSdLazyCounter, 947 mSolverCounterSat, 25 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 220 SdHoareTripleChecker+Invalid, 980 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 947 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2022-12-13 21:14:20,169 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [154 Valid, 220 Invalid, 980 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 947 Invalid, 8 Unknown, 0 Unchecked, 3.5s Time] [2022-12-13 21:14:20,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2022-12-13 21:14:20,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 85. [2022-12-13 21:14:20,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 56 states have (on average 1.3392857142857142) internal successors, (75), 72 states have internal predecessors, (75), 6 states have call successors, (6), 6 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-12-13 21:14:20,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 87 transitions. [2022-12-13 21:14:20,171 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 87 transitions. Word has length 36 [2022-12-13 21:14:20,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:14:20,171 INFO L495 AbstractCegarLoop]: Abstraction has 85 states and 87 transitions. [2022-12-13 21:14:20,171 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 20 states have (on average 1.45) internal successors, (29), 17 states have internal predecessors, (29), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-13 21:14:20,171 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 87 transitions. [2022-12-13 21:14:20,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-12-13 21:14:20,172 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:14:20,172 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:14:20,180 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08136510-8e14-4c65-9e2c-741904b6a3e7/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Ended with exit code 0 [2022-12-13 21:14:20,372 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08136510-8e14-4c65-9e2c-741904b6a3e7/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 21:14:20,373 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ldv_list_delErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2022-12-13 21:14:20,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:14:20,375 INFO L85 PathProgramCache]: Analyzing trace with hash 897446075, now seen corresponding path program 1 times [2022-12-13 21:14:20,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 21:14:20,376 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1901680457] [2022-12-13 21:14:20,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:14:20,376 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 21:14:20,377 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08136510-8e14-4c65-9e2c-741904b6a3e7/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 21:14:20,378 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08136510-8e14-4c65-9e2c-741904b6a3e7/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 21:14:20,379 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08136510-8e14-4c65-9e2c-741904b6a3e7/bin/uautomizer-uyxdKDjOR8/mathsat -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 [2022-12-13 21:14:20,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:14:20,520 INFO L263 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 57 conjunts are in the unsatisfiable core [2022-12-13 21:14:20,523 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:14:20,629 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-12-13 21:14:20,629 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-12-13 21:14:20,637 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-12-13 21:14:20,874 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-13 21:14:20,887 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-13 21:14:28,575 WARN L233 SmtUtils]: Spent 7.61s on a formula simplification. DAG size of input: 20 DAG size of output: 15 (called from [L 318] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-12-13 21:14:28,576 INFO L321 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2022-12-13 21:14:28,576 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 44 [2022-12-13 21:14:28,618 INFO L321 Elim1Store]: treesize reduction 43, result has 23.2 percent of original size [2022-12-13 21:14:28,618 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 24 [2022-12-13 21:14:29,464 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 69 treesize of output 38 [2022-12-13 21:14:29,471 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-12-13 21:14:29,471 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 14 [2022-12-13 21:14:29,573 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:14:29,573 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 21:14:29,574 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 21:14:29,574 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1901680457] [2022-12-13 21:14:29,574 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1901680457] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:14:29,574 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:14:29,574 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-12-13 21:14:29,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711096734] [2022-12-13 21:14:29,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:14:29,574 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-12-13 21:14:29,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 21:14:29,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-12-13 21:14:29,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=333, Unknown=0, NotChecked=0, Total=380 [2022-12-13 21:14:29,575 INFO L87 Difference]: Start difference. First operand 85 states and 87 transitions. Second operand has 20 states, 19 states have (on average 1.5263157894736843) internal successors, (29), 16 states have internal predecessors, (29), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-13 21:14:41,400 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 21:14:42,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:14:42,286 INFO L93 Difference]: Finished difference Result 86 states and 86 transitions. [2022-12-13 21:14:42,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-12-13 21:14:42,286 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 1.5263157894736843) internal successors, (29), 16 states have internal predecessors, (29), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 36 [2022-12-13 21:14:42,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:14:42,287 INFO L225 Difference]: With dead ends: 86 [2022-12-13 21:14:42,287 INFO L226 Difference]: Without dead ends: 86 [2022-12-13 21:14:42,287 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 224 ImplicationChecksByTransitivity, 9.9s TimeCoverageRelationStatistics Valid=211, Invalid=1271, Unknown=0, NotChecked=0, Total=1482 [2022-12-13 21:14:42,287 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 148 mSDsluCounter, 204 mSDsCounter, 0 mSdLazyCounter, 880 mSolverCounterSat, 20 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 224 SdHoareTripleChecker+Invalid, 901 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 880 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2022-12-13 21:14:42,288 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [150 Valid, 224 Invalid, 901 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 880 Invalid, 1 Unknown, 0 Unchecked, 3.5s Time] [2022-12-13 21:14:42,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2022-12-13 21:14:42,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 85. [2022-12-13 21:14:42,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 56 states have (on average 1.3214285714285714) internal successors, (74), 72 states have internal predecessors, (74), 6 states have call successors, (6), 6 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-12-13 21:14:42,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 86 transitions. [2022-12-13 21:14:42,289 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 86 transitions. Word has length 36 [2022-12-13 21:14:42,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:14:42,290 INFO L495 AbstractCegarLoop]: Abstraction has 85 states and 86 transitions. [2022-12-13 21:14:42,290 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 1.5263157894736843) internal successors, (29), 16 states have internal predecessors, (29), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-13 21:14:42,290 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 86 transitions. [2022-12-13 21:14:42,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-12-13 21:14:42,290 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:14:42,290 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:14:42,298 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08136510-8e14-4c65-9e2c-741904b6a3e7/bin/uautomizer-uyxdKDjOR8/mathsat -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 [2022-12-13 21:14:42,491 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08136510-8e14-4c65-9e2c-741904b6a3e7/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 21:14:42,492 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_FREE === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2022-12-13 21:14:42,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:14:42,493 INFO L85 PathProgramCache]: Analyzing trace with hash 2088327703, now seen corresponding path program 1 times [2022-12-13 21:14:42,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 21:14:42,494 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [393495923] [2022-12-13 21:14:42,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:14:42,495 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 21:14:42,495 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08136510-8e14-4c65-9e2c-741904b6a3e7/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 21:14:42,496 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08136510-8e14-4c65-9e2c-741904b6a3e7/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 21:14:42,497 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08136510-8e14-4c65-9e2c-741904b6a3e7/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2022-12-13 21:14:42,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:14:42,756 INFO L263 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 24 conjunts are in the unsatisfiable core [2022-12-13 21:14:42,760 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:14:43,019 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-13 21:14:43,210 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2022-12-13 21:14:43,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:14:43,447 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 21:14:43,447 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 21:14:43,447 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [393495923] [2022-12-13 21:14:43,447 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [393495923] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:14:43,448 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:14:43,448 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-12-13 21:14:43,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540742960] [2022-12-13 21:14:43,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:14:43,448 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-12-13 21:14:43,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 21:14:43,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-12-13 21:14:43,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2022-12-13 21:14:43,449 INFO L87 Difference]: Start difference. First operand 85 states and 86 transitions. Second operand has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 12 states have internal predecessors, (33), 4 states have call successors, (4), 2 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-12-13 21:14:44,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:14:44,413 INFO L93 Difference]: Finished difference Result 86 states and 86 transitions. [2022-12-13 21:14:44,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-12-13 21:14:44,413 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 12 states have internal predecessors, (33), 4 states have call successors, (4), 2 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 41 [2022-12-13 21:14:44,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:14:44,413 INFO L225 Difference]: With dead ends: 86 [2022-12-13 21:14:44,414 INFO L226 Difference]: Without dead ends: 86 [2022-12-13 21:14:44,414 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 26 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=87, Invalid=293, Unknown=0, NotChecked=0, Total=380 [2022-12-13 21:14:44,414 INFO L413 NwaCegarLoop]: 49 mSDtfsCounter, 78 mSDsluCounter, 356 mSDsCounter, 0 mSdLazyCounter, 294 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 405 SdHoareTripleChecker+Invalid, 298 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 294 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-12-13 21:14:44,414 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 405 Invalid, 298 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 294 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-12-13 21:14:44,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2022-12-13 21:14:44,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 85. [2022-12-13 21:14:44,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 56 states have (on average 1.3035714285714286) internal successors, (73), 72 states have internal predecessors, (73), 6 states have call successors, (6), 6 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-12-13 21:14:44,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 85 transitions. [2022-12-13 21:14:44,416 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 85 transitions. Word has length 41 [2022-12-13 21:14:44,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:14:44,416 INFO L495 AbstractCegarLoop]: Abstraction has 85 states and 85 transitions. [2022-12-13 21:14:44,416 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 12 states have internal predecessors, (33), 4 states have call successors, (4), 2 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-12-13 21:14:44,416 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 85 transitions. [2022-12-13 21:14:44,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-12-13 21:14:44,416 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:14:44,417 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:14:44,424 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08136510-8e14-4c65-9e2c-741904b6a3e7/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Ended with exit code 0 [2022-12-13 21:14:44,617 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08136510-8e14-4c65-9e2c-741904b6a3e7/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 21:14:44,618 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2022-12-13 21:14:44,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:14:44,619 INFO L85 PathProgramCache]: Analyzing trace with hash 769395034, now seen corresponding path program 1 times [2022-12-13 21:14:44,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 21:14:44,621 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1757002170] [2022-12-13 21:14:44,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:14:44,622 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 21:14:44,622 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08136510-8e14-4c65-9e2c-741904b6a3e7/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 21:14:44,625 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08136510-8e14-4c65-9e2c-741904b6a3e7/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 21:14:44,628 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08136510-8e14-4c65-9e2c-741904b6a3e7/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2022-12-13 21:14:44,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:14:44,839 INFO L263 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 58 conjunts are in the unsatisfiable core [2022-12-13 21:14:44,843 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:14:44,929 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-13 21:14:44,930 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2022-12-13 21:14:44,984 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-12-13 21:14:45,212 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-13 21:14:45,264 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-12-13 21:14:45,321 INFO L321 Elim1Store]: treesize reduction 17, result has 46.9 percent of original size [2022-12-13 21:14:45,322 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 26 [2022-12-13 21:14:45,327 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-13 21:14:45,564 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 35 [2022-12-13 21:14:45,640 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 15 [2022-12-13 21:14:46,159 INFO L321 Elim1Store]: treesize reduction 34, result has 8.1 percent of original size [2022-12-13 21:14:46,159 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 38 treesize of output 20 [2022-12-13 21:14:46,226 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 20 [2022-12-13 21:14:46,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:14:46,274 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 21:14:46,274 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 21:14:46,274 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1757002170] [2022-12-13 21:14:46,274 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1757002170] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:14:46,274 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:14:46,274 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2022-12-13 21:14:46,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257689961] [2022-12-13 21:14:46,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:14:46,275 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-12-13 21:14:46,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 21:14:46,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-12-13 21:14:46,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=557, Unknown=1, NotChecked=0, Total=650 [2022-12-13 21:14:46,276 INFO L87 Difference]: Start difference. First operand 85 states and 85 transitions. Second operand has 26 states, 24 states have (on average 1.5) internal successors, (36), 21 states have internal predecessors, (36), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-12-13 21:14:48,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:14:48,809 INFO L93 Difference]: Finished difference Result 88 states and 88 transitions. [2022-12-13 21:14:48,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-12-13 21:14:48,810 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 24 states have (on average 1.5) internal successors, (36), 21 states have internal predecessors, (36), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 44 [2022-12-13 21:14:48,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:14:48,810 INFO L225 Difference]: With dead ends: 88 [2022-12-13 21:14:48,810 INFO L226 Difference]: Without dead ends: 88 [2022-12-13 21:14:48,811 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 369 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=235, Invalid=1652, Unknown=5, NotChecked=0, Total=1892 [2022-12-13 21:14:48,811 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 47 mSDsluCounter, 290 mSDsCounter, 0 mSdLazyCounter, 789 mSolverCounterSat, 15 mSolverCounterUnsat, 13 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 329 SdHoareTripleChecker+Invalid, 817 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 789 IncrementalHoareTripleChecker+Invalid, 13 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-12-13 21:14:48,811 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 329 Invalid, 817 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 789 Invalid, 13 Unknown, 0 Unchecked, 1.4s Time] [2022-12-13 21:14:48,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2022-12-13 21:14:48,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 87. [2022-12-13 21:14:48,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 58 states have (on average 1.3103448275862069) internal successors, (76), 74 states have internal predecessors, (76), 6 states have call successors, (6), 6 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-12-13 21:14:48,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 88 transitions. [2022-12-13 21:14:48,813 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 88 transitions. Word has length 44 [2022-12-13 21:14:48,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:14:48,813 INFO L495 AbstractCegarLoop]: Abstraction has 87 states and 88 transitions. [2022-12-13 21:14:48,813 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 24 states have (on average 1.5) internal successors, (36), 21 states have internal predecessors, (36), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-12-13 21:14:48,813 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 88 transitions. [2022-12-13 21:14:48,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-12-13 21:14:48,814 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:14:48,814 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:14:48,836 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08136510-8e14-4c65-9e2c-741904b6a3e7/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2022-12-13 21:14:49,014 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08136510-8e14-4c65-9e2c-741904b6a3e7/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 21:14:49,015 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2022-12-13 21:14:49,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:14:49,016 INFO L85 PathProgramCache]: Analyzing trace with hash 769395035, now seen corresponding path program 1 times [2022-12-13 21:14:49,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 21:14:49,018 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [244401664] [2022-12-13 21:14:49,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:14:49,018 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 21:14:49,019 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08136510-8e14-4c65-9e2c-741904b6a3e7/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 21:14:49,020 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08136510-8e14-4c65-9e2c-741904b6a3e7/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 21:14:49,024 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08136510-8e14-4c65-9e2c-741904b6a3e7/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2022-12-13 21:14:49,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:14:49,214 INFO L263 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 71 conjunts are in the unsatisfiable core [2022-12-13 21:14:49,217 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:14:49,375 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-12-13 21:14:49,375 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-12-13 21:14:49,385 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-12-13 21:14:49,476 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-12-13 21:14:49,483 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-12-13 21:14:49,810 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-13 21:14:49,819 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-13 21:14:49,910 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-12-13 21:14:49,931 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-12-13 21:14:49,990 INFO L321 Elim1Store]: treesize reduction 17, result has 46.9 percent of original size [2022-12-13 21:14:49,991 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 26 [2022-12-13 21:14:50,026 INFO L321 Elim1Store]: treesize reduction 17, result has 46.9 percent of original size [2022-12-13 21:14:50,027 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 26 [2022-12-13 21:14:50,331 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 35 [2022-12-13 21:14:50,342 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 35 [2022-12-13 21:14:50,755 INFO L321 Elim1Store]: treesize reduction 15, result has 6.3 percent of original size [2022-12-13 21:14:50,755 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 71 treesize of output 38 [2022-12-13 21:14:50,760 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 12 [2022-12-13 21:14:50,824 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:14:50,824 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 21:14:50,824 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 21:14:50,824 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [244401664] [2022-12-13 21:14:50,824 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [244401664] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:14:50,825 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:14:50,825 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-12-13 21:14:50,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782832956] [2022-12-13 21:14:50,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:14:50,825 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-12-13 21:14:50,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 21:14:50,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-12-13 21:14:50,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=391, Unknown=0, NotChecked=0, Total=462 [2022-12-13 21:14:50,826 INFO L87 Difference]: Start difference. First operand 87 states and 88 transitions. Second operand has 22 states, 20 states have (on average 1.8) internal successors, (36), 18 states have internal predecessors, (36), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-12-13 21:14:53,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:14:53,301 INFO L93 Difference]: Finished difference Result 88 states and 88 transitions. [2022-12-13 21:14:53,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-12-13 21:14:53,301 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 20 states have (on average 1.8) internal successors, (36), 18 states have internal predecessors, (36), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 44 [2022-12-13 21:14:53,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:14:53,302 INFO L225 Difference]: With dead ends: 88 [2022-12-13 21:14:53,302 INFO L226 Difference]: Without dead ends: 88 [2022-12-13 21:14:53,302 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 185 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=185, Invalid=1221, Unknown=0, NotChecked=0, Total=1406 [2022-12-13 21:14:53,302 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 101 mSDsluCounter, 392 mSDsCounter, 0 mSdLazyCounter, 863 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 425 SdHoareTripleChecker+Invalid, 880 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 863 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-12-13 21:14:53,302 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 425 Invalid, 880 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 863 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-12-13 21:14:53,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2022-12-13 21:14:53,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 87. [2022-12-13 21:14:53,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 58 states have (on average 1.293103448275862) internal successors, (75), 74 states have internal predecessors, (75), 6 states have call successors, (6), 6 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-12-13 21:14:53,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 87 transitions. [2022-12-13 21:14:53,304 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 87 transitions. Word has length 44 [2022-12-13 21:14:53,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:14:53,304 INFO L495 AbstractCegarLoop]: Abstraction has 87 states and 87 transitions. [2022-12-13 21:14:53,304 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 20 states have (on average 1.8) internal successors, (36), 18 states have internal predecessors, (36), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-12-13 21:14:53,305 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 87 transitions. [2022-12-13 21:14:53,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-12-13 21:14:53,305 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:14:53,305 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:14:53,314 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08136510-8e14-4c65-9e2c-741904b6a3e7/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (28)] Forceful destruction successful, exit code 0 [2022-12-13 21:14:53,506 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08136510-8e14-4c65-9e2c-741904b6a3e7/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 21:14:53,506 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ldv_list_delErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2022-12-13 21:14:53,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:14:53,507 INFO L85 PathProgramCache]: Analyzing trace with hash 305014949, now seen corresponding path program 1 times [2022-12-13 21:14:53,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 21:14:53,508 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [792630546] [2022-12-13 21:14:53,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:14:53,509 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 21:14:53,509 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08136510-8e14-4c65-9e2c-741904b6a3e7/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 21:14:53,510 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08136510-8e14-4c65-9e2c-741904b6a3e7/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 21:14:53,511 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08136510-8e14-4c65-9e2c-741904b6a3e7/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2022-12-13 21:14:53,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:14:53,652 INFO L263 TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-13 21:14:53,654 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:14:53,684 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:14:53,684 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 21:14:53,684 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 21:14:53,684 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [792630546] [2022-12-13 21:14:53,684 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [792630546] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:14:53,685 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:14:53,685 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 21:14:53,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875706799] [2022-12-13 21:14:53,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:14:53,685 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 21:14:53,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 21:14:53,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 21:14:53,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-12-13 21:14:53,686 INFO L87 Difference]: Start difference. First operand 87 states and 87 transitions. Second operand has 6 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-12-13 21:14:53,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:14:53,900 INFO L93 Difference]: Finished difference Result 85 states and 85 transitions. [2022-12-13 21:14:53,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 21:14:53,901 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 49 [2022-12-13 21:14:53,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:14:53,901 INFO L225 Difference]: With dead ends: 85 [2022-12-13 21:14:53,901 INFO L226 Difference]: Without dead ends: 85 [2022-12-13 21:14:53,902 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-12-13 21:14:53,902 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 39 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 172 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-13 21:14:53,902 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 172 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-13 21:14:53,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2022-12-13 21:14:53,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2022-12-13 21:14:53,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 58 states have (on average 1.2586206896551724) internal successors, (73), 72 states have internal predecessors, (73), 6 states have call successors, (6), 6 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-12-13 21:14:53,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 85 transitions. [2022-12-13 21:14:53,904 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 85 transitions. Word has length 49 [2022-12-13 21:14:53,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:14:53,904 INFO L495 AbstractCegarLoop]: Abstraction has 85 states and 85 transitions. [2022-12-13 21:14:53,904 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-12-13 21:14:53,904 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 85 transitions. [2022-12-13 21:14:53,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-12-13 21:14:53,904 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:14:53,904 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:14:53,917 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08136510-8e14-4c65-9e2c-741904b6a3e7/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (29)] Ended with exit code 0 [2022-12-13 21:14:54,105 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08136510-8e14-4c65-9e2c-741904b6a3e7/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 21:14:54,105 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ldv_list_delErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2022-12-13 21:14:54,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:14:54,106 INFO L85 PathProgramCache]: Analyzing trace with hash 305014950, now seen corresponding path program 1 times [2022-12-13 21:14:54,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 21:14:54,108 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [321560985] [2022-12-13 21:14:54,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:14:54,108 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 21:14:54,109 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08136510-8e14-4c65-9e2c-741904b6a3e7/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 21:14:54,111 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08136510-8e14-4c65-9e2c-741904b6a3e7/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 21:14:54,114 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08136510-8e14-4c65-9e2c-741904b6a3e7/bin/uautomizer-uyxdKDjOR8/mathsat -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 [2022-12-13 21:14:54,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:14:54,304 INFO L263 TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 31 conjunts are in the unsatisfiable core [2022-12-13 21:14:54,305 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:14:54,544 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 17 [2022-12-13 21:14:54,547 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 20 [2022-12-13 21:14:55,127 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:14:55,128 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 21:14:56,234 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 21:14:56,234 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 46 [2022-12-13 21:15:05,796 WARN L233 SmtUtils]: Spent 8.57s on a formula simplification that was a NOOP. DAG size: 45 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 21:15:06,213 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 21:15:06,213 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 111 treesize of output 151 [2022-12-13 21:15:09,815 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:15:09,815 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 21:15:09,815 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [321560985] [2022-12-13 21:15:09,815 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [321560985] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 21:15:09,815 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 21:15:09,815 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 25 [2022-12-13 21:15:09,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885656098] [2022-12-13 21:15:09,815 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 21:15:09,816 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-12-13 21:15:09,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 21:15:09,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-12-13 21:15:09,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=582, Unknown=0, NotChecked=0, Total=650 [2022-12-13 21:15:09,817 INFO L87 Difference]: Start difference. First operand 85 states and 85 transitions. Second operand has 26 states, 25 states have (on average 2.4) internal successors, (60), 22 states have internal predecessors, (60), 5 states have call successors, (7), 5 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2022-12-13 21:15:16,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:15:16,506 INFO L93 Difference]: Finished difference Result 96 states and 98 transitions. [2022-12-13 21:15:16,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-12-13 21:15:16,509 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 2.4) internal successors, (60), 22 states have internal predecessors, (60), 5 states have call successors, (7), 5 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Word has length 49 [2022-12-13 21:15:16,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:15:16,510 INFO L225 Difference]: With dead ends: 96 [2022-12-13 21:15:16,510 INFO L226 Difference]: Without dead ends: 96 [2022-12-13 21:15:16,510 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 156 ImplicationChecksByTransitivity, 15.9s TimeCoverageRelationStatistics Valid=173, Invalid=1087, Unknown=0, NotChecked=0, Total=1260 [2022-12-13 21:15:16,511 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 122 mSDsluCounter, 439 mSDsCounter, 0 mSdLazyCounter, 695 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 483 SdHoareTripleChecker+Invalid, 718 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 695 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2022-12-13 21:15:16,511 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [124 Valid, 483 Invalid, 718 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 695 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2022-12-13 21:15:16,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2022-12-13 21:15:16,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 91. [2022-12-13 21:15:16,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 63 states have (on average 1.253968253968254) internal successors, (79), 77 states have internal predecessors, (79), 7 states have call successors, (7), 7 states have call predecessors, (7), 6 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2022-12-13 21:15:16,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 93 transitions. [2022-12-13 21:15:16,513 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 93 transitions. Word has length 49 [2022-12-13 21:15:16,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:15:16,514 INFO L495 AbstractCegarLoop]: Abstraction has 91 states and 93 transitions. [2022-12-13 21:15:16,514 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 2.4) internal successors, (60), 22 states have internal predecessors, (60), 5 states have call successors, (7), 5 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2022-12-13 21:15:16,514 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 93 transitions. [2022-12-13 21:15:16,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-12-13 21:15:16,514 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:15:16,514 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:15:16,522 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08136510-8e14-4c65-9e2c-741904b6a3e7/bin/uautomizer-uyxdKDjOR8/mathsat -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 [2022-12-13 21:15:16,714 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08136510-8e14-4c65-9e2c-741904b6a3e7/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 21:15:16,715 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2022-12-13 21:15:16,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:15:16,716 INFO L85 PathProgramCache]: Analyzing trace with hash 862140099, now seen corresponding path program 1 times [2022-12-13 21:15:16,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 21:15:16,717 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1932605103] [2022-12-13 21:15:16,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:15:16,718 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 21:15:16,718 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08136510-8e14-4c65-9e2c-741904b6a3e7/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 21:15:16,721 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08136510-8e14-4c65-9e2c-741904b6a3e7/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 21:15:16,723 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08136510-8e14-4c65-9e2c-741904b6a3e7/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2022-12-13 21:15:16,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:15:16,891 INFO L263 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-13 21:15:16,893 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:15:16,932 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:15:16,932 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 21:15:16,932 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 21:15:16,932 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1932605103] [2022-12-13 21:15:16,932 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1932605103] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:15:16,932 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:15:16,933 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-13 21:15:16,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835646235] [2022-12-13 21:15:16,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:15:16,933 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 21:15:16,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 21:15:16,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 21:15:16,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 21:15:16,934 INFO L87 Difference]: Start difference. First operand 91 states and 93 transitions. Second operand has 7 states, 6 states have (on average 6.833333333333333) internal successors, (41), 6 states have internal predecessors, (41), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-12-13 21:15:17,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:15:17,298 INFO L93 Difference]: Finished difference Result 89 states and 91 transitions. [2022-12-13 21:15:17,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 21:15:17,298 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 6.833333333333333) internal successors, (41), 6 states have internal predecessors, (41), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 50 [2022-12-13 21:15:17,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:15:17,299 INFO L225 Difference]: With dead ends: 89 [2022-12-13 21:15:17,299 INFO L226 Difference]: Without dead ends: 89 [2022-12-13 21:15:17,299 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2022-12-13 21:15:17,299 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 73 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 181 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 153 SdHoareTripleChecker+Invalid, 190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-13 21:15:17,299 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 153 Invalid, 190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 181 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-13 21:15:17,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2022-12-13 21:15:17,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2022-12-13 21:15:17,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 63 states have (on average 1.2222222222222223) internal successors, (77), 75 states have internal predecessors, (77), 7 states have call successors, (7), 7 states have call predecessors, (7), 6 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2022-12-13 21:15:17,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 91 transitions. [2022-12-13 21:15:17,301 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 91 transitions. Word has length 50 [2022-12-13 21:15:17,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:15:17,301 INFO L495 AbstractCegarLoop]: Abstraction has 89 states and 91 transitions. [2022-12-13 21:15:17,302 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 6.833333333333333) internal successors, (41), 6 states have internal predecessors, (41), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-12-13 21:15:17,302 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 91 transitions. [2022-12-13 21:15:17,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-12-13 21:15:17,302 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:15:17,302 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:15:17,310 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08136510-8e14-4c65-9e2c-741904b6a3e7/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (31)] Forceful destruction successful, exit code 0 [2022-12-13 21:15:17,502 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08136510-8e14-4c65-9e2c-741904b6a3e7/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 21:15:17,502 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2022-12-13 21:15:17,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:15:17,503 INFO L85 PathProgramCache]: Analyzing trace with hash 862140100, now seen corresponding path program 1 times [2022-12-13 21:15:17,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 21:15:17,503 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2089658235] [2022-12-13 21:15:17,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:15:17,503 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 21:15:17,503 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08136510-8e14-4c65-9e2c-741904b6a3e7/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 21:15:17,504 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08136510-8e14-4c65-9e2c-741904b6a3e7/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 21:15:17,505 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08136510-8e14-4c65-9e2c-741904b6a3e7/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2022-12-13 21:15:17,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:15:17,644 INFO L263 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 11 conjunts are in the unsatisfiable core [2022-12-13 21:15:17,646 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:15:17,967 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 21:15:17,967 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 21:15:17,967 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 21:15:17,967 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2089658235] [2022-12-13 21:15:17,967 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2089658235] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:15:17,967 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:15:17,967 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-13 21:15:17,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245278134] [2022-12-13 21:15:17,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:15:17,968 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 21:15:17,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 21:15:17,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 21:15:17,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-12-13 21:15:17,969 INFO L87 Difference]: Start difference. First operand 89 states and 91 transitions. Second operand has 8 states, 7 states have (on average 5.857142857142857) internal successors, (41), 6 states have internal predecessors, (41), 3 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2022-12-13 21:15:18,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:15:18,387 INFO L93 Difference]: Finished difference Result 88 states and 90 transitions. [2022-12-13 21:15:18,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-13 21:15:18,388 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 5.857142857142857) internal successors, (41), 6 states have internal predecessors, (41), 3 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 50 [2022-12-13 21:15:18,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:15:18,388 INFO L225 Difference]: With dead ends: 88 [2022-12-13 21:15:18,388 INFO L226 Difference]: Without dead ends: 88 [2022-12-13 21:15:18,388 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 42 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-12-13 21:15:18,389 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 51 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 172 SdHoareTripleChecker+Invalid, 160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-13 21:15:18,389 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 172 Invalid, 160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 156 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-13 21:15:18,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2022-12-13 21:15:18,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2022-12-13 21:15:18,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 63 states have (on average 1.2063492063492063) internal successors, (76), 74 states have internal predecessors, (76), 7 states have call successors, (7), 7 states have call predecessors, (7), 6 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2022-12-13 21:15:18,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 90 transitions. [2022-12-13 21:15:18,391 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 90 transitions. Word has length 50 [2022-12-13 21:15:18,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:15:18,391 INFO L495 AbstractCegarLoop]: Abstraction has 88 states and 90 transitions. [2022-12-13 21:15:18,392 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 5.857142857142857) internal successors, (41), 6 states have internal predecessors, (41), 3 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2022-12-13 21:15:18,392 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 90 transitions. [2022-12-13 21:15:18,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-12-13 21:15:18,392 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:15:18,392 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:15:18,400 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08136510-8e14-4c65-9e2c-741904b6a3e7/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (32)] Forceful destruction successful, exit code 0 [2022-12-13 21:15:18,593 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08136510-8e14-4c65-9e2c-741904b6a3e7/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 21:15:18,594 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting LDV_INIT_LIST_HEADErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2022-12-13 21:15:18,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:15:18,595 INFO L85 PathProgramCache]: Analyzing trace with hash 956539334, now seen corresponding path program 1 times [2022-12-13 21:15:18,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 21:15:18,597 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [462603332] [2022-12-13 21:15:18,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:15:18,598 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 21:15:18,598 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08136510-8e14-4c65-9e2c-741904b6a3e7/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 21:15:18,601 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08136510-8e14-4c65-9e2c-741904b6a3e7/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 21:15:18,604 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08136510-8e14-4c65-9e2c-741904b6a3e7/bin/uautomizer-uyxdKDjOR8/mathsat -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 [2022-12-13 21:15:18,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:15:18,726 INFO L263 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 23 conjunts are in the unsatisfiable core [2022-12-13 21:15:18,729 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:15:18,804 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-12-13 21:15:18,812 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-12-13 21:15:19,060 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 15 [2022-12-13 21:15:19,063 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2022-12-13 21:15:19,302 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 21:15:19,302 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 21:15:19,302 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 21:15:19,302 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [462603332] [2022-12-13 21:15:19,302 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [462603332] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:15:19,302 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:15:19,302 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-12-13 21:15:19,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805798080] [2022-12-13 21:15:19,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:15:19,303 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-12-13 21:15:19,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 21:15:19,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-12-13 21:15:19,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2022-12-13 21:15:19,304 INFO L87 Difference]: Start difference. First operand 88 states and 90 transitions. Second operand has 13 states, 11 states have (on average 3.8181818181818183) internal successors, (42), 9 states have internal predecessors, (42), 3 states have call successors, (5), 5 states have call predecessors, (5), 4 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2022-12-13 21:15:20,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:15:20,268 INFO L93 Difference]: Finished difference Result 87 states and 89 transitions. [2022-12-13 21:15:20,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-12-13 21:15:20,269 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 3.8181818181818183) internal successors, (42), 9 states have internal predecessors, (42), 3 states have call successors, (5), 5 states have call predecessors, (5), 4 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 51 [2022-12-13 21:15:20,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:15:20,269 INFO L225 Difference]: With dead ends: 87 [2022-12-13 21:15:20,269 INFO L226 Difference]: Without dead ends: 87 [2022-12-13 21:15:20,269 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=112, Invalid=488, Unknown=0, NotChecked=0, Total=600 [2022-12-13 21:15:20,270 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 65 mSDsluCounter, 224 mSDsCounter, 0 mSdLazyCounter, 302 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 260 SdHoareTripleChecker+Invalid, 314 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 302 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-12-13 21:15:20,270 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 260 Invalid, 314 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 302 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-12-13 21:15:20,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2022-12-13 21:15:20,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2022-12-13 21:15:20,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 63 states have (on average 1.1904761904761905) internal successors, (75), 73 states have internal predecessors, (75), 7 states have call successors, (7), 7 states have call predecessors, (7), 6 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2022-12-13 21:15:20,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 89 transitions. [2022-12-13 21:15:20,271 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 89 transitions. Word has length 51 [2022-12-13 21:15:20,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:15:20,272 INFO L495 AbstractCegarLoop]: Abstraction has 87 states and 89 transitions. [2022-12-13 21:15:20,272 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 3.8181818181818183) internal successors, (42), 9 states have internal predecessors, (42), 3 states have call successors, (5), 5 states have call predecessors, (5), 4 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2022-12-13 21:15:20,272 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 89 transitions. [2022-12-13 21:15:20,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-12-13 21:15:20,272 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:15:20,272 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:15:20,280 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08136510-8e14-4c65-9e2c-741904b6a3e7/bin/uautomizer-uyxdKDjOR8/mathsat -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 [2022-12-13 21:15:20,472 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08136510-8e14-4c65-9e2c-741904b6a3e7/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 21:15:20,473 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ldv_list_delErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2022-12-13 21:15:20,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:15:20,473 INFO L85 PathProgramCache]: Analyzing trace with hash -1450404916, now seen corresponding path program 1 times [2022-12-13 21:15:20,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 21:15:20,473 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [376017160] [2022-12-13 21:15:20,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:15:20,473 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 21:15:20,473 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08136510-8e14-4c65-9e2c-741904b6a3e7/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 21:15:20,474 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08136510-8e14-4c65-9e2c-741904b6a3e7/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 21:15:20,475 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08136510-8e14-4c65-9e2c-741904b6a3e7/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (34)] Waiting until timeout for monitored process [2022-12-13 21:15:20,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:15:20,673 INFO L263 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 60 conjunts are in the unsatisfiable core [2022-12-13 21:15:20,676 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:15:20,829 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-12-13 21:15:20,830 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 18 [2022-12-13 21:15:20,849 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-12-13 21:15:20,849 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-12-13 21:15:20,942 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-12-13 21:15:21,240 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-13 21:15:21,319 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-12-13 21:15:21,377 INFO L321 Elim1Store]: treesize reduction 17, result has 46.9 percent of original size [2022-12-13 21:15:21,378 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 26 [2022-12-13 21:15:21,383 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-13 21:15:21,627 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 35 [2022-12-13 21:15:21,727 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 15 [2022-12-13 21:15:21,897 INFO L321 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2022-12-13 21:15:21,897 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 14 [2022-12-13 21:15:22,661 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:15:22,661 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 21:15:24,579 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 21:15:24,579 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [376017160] [2022-12-13 21:15:24,579 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [376017160] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 21:15:24,579 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1631837014] [2022-12-13 21:15:24,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:15:24,579 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-12-13 21:15:24,579 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08136510-8e14-4c65-9e2c-741904b6a3e7/bin/uautomizer-uyxdKDjOR8/cvc4 [2022-12-13 21:15:24,580 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08136510-8e14-4c65-9e2c-741904b6a3e7/bin/uautomizer-uyxdKDjOR8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-12-13 21:15:24,581 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08136510-8e14-4c65-9e2c-741904b6a3e7/bin/uautomizer-uyxdKDjOR8/cvc4 --incremental --print-success --lang smt (35)] Waiting until timeout for monitored process [2022-12-13 21:15:24,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:15:24,949 INFO L263 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 90 conjunts are in the unsatisfiable core [2022-12-13 21:15:24,953 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:15:25,326 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-12-13 21:15:25,327 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-12-13 21:15:25,601 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-12-13 21:15:25,605 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-12-13 21:15:26,325 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-13 21:15:26,332 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-13 21:15:26,524 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:15:26,524 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-12-13 21:15:26,549 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:15:26,550 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-12-13 21:15:26,589 INFO L321 Elim1Store]: treesize reduction 17, result has 46.9 percent of original size [2022-12-13 21:15:26,589 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 26 [2022-12-13 21:15:26,645 INFO L321 Elim1Store]: treesize reduction 17, result has 46.9 percent of original size [2022-12-13 21:15:26,645 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 26 [2022-12-13 21:15:27,233 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 35 [2022-12-13 21:15:27,249 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 35 [2022-12-13 21:15:28,418 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 21:15:28,418 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 22 [2022-12-13 21:15:28,423 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 10 [2022-12-13 21:15:28,965 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 21:15:28,965 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 67 treesize of output 39 [2022-12-13 21:15:28,978 INFO L321 Elim1Store]: treesize reduction 7, result has 30.0 percent of original size [2022-12-13 21:15:28,979 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 23 [2022-12-13 21:15:29,440 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:15:29,440 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 21:15:34,163 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:15:34,174 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:15:38,345 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 21:15:38,346 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 10 case distinctions, treesize of input 61693 treesize of output 52062 [2022-12-13 21:15:39,382 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 21:15:39,384 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 122536 treesize of output 120704