./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/memsafety/test-0234-1.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_9656362c-97b5-4c04-809d-86c8c00f5bc2/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9656362c-97b5-4c04-809d-86c8c00f5bc2/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_9656362c-97b5-4c04-809d-86c8c00f5bc2/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9656362c-97b5-4c04-809d-86c8c00f5bc2/bin/uautomizer-uyxdKDjOR8/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety/test-0234-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9656362c-97b5-4c04-809d-86c8c00f5bc2/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_9656362c-97b5-4c04-809d-86c8c00f5bc2/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 2e40f9e7b474ba5b84186650c7060a1f3eed5394bab52ac2eaa493135efa417c --- 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 21:24:37,451 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 21:24:37,452 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 21:24:37,465 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 21:24:37,465 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 21:24:37,466 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 21:24:37,467 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 21:24:37,470 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 21:24:37,473 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 21:24:37,474 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 21:24:37,476 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 21:24:37,478 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 21:24:37,478 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 21:24:37,480 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 21:24:37,482 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 21:24:37,484 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 21:24:37,485 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 21:24:37,486 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 21:24:37,489 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 21:24:37,492 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 21:24:37,494 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 21:24:37,496 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 21:24:37,498 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 21:24:37,499 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 21:24:37,505 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 21:24:37,506 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 21:24:37,506 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 21:24:37,507 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 21:24:37,508 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 21:24:37,509 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 21:24:37,510 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 21:24:37,511 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 21:24:37,512 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 21:24:37,513 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 21:24:37,514 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 21:24:37,514 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 21:24:37,515 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 21:24:37,515 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 21:24:37,515 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 21:24:37,516 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 21:24:37,517 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 21:24:37,518 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9656362c-97b5-4c04-809d-86c8c00f5bc2/bin/uautomizer-uyxdKDjOR8/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-12-13 21:24:37,542 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 21:24:37,542 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 21:24:37,542 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 21:24:37,543 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 21:24:37,543 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 21:24:37,543 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 21:24:37,544 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 21:24:37,544 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 21:24:37,545 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 21:24:37,545 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 21:24:37,545 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 21:24:37,545 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-13 21:24:37,545 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 21:24:37,546 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 21:24:37,546 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 21:24:37,546 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-12-13 21:24:37,546 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-12-13 21:24:37,546 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-12-13 21:24:37,546 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 21:24:37,547 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-12-13 21:24:37,547 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 21:24:37,547 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 21:24:37,547 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 21:24:37,547 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 21:24:37,548 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 21:24:37,548 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 21:24:37,548 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 21:24:37,548 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 21:24:37,548 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 21:24:37,549 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 21:24:37,549 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 21:24:37,549 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 21:24:37,549 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 21:24:37,549 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 21:24:37,550 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_9656362c-97b5-4c04-809d-86c8c00f5bc2/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9656362c-97b5-4c04-809d-86c8c00f5bc2/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2e40f9e7b474ba5b84186650c7060a1f3eed5394bab52ac2eaa493135efa417c [2022-12-13 21:24:37,717 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 21:24:37,737 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 21:24:37,740 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 21:24:37,741 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 21:24:37,741 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 21:24:37,743 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9656362c-97b5-4c04-809d-86c8c00f5bc2/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/memsafety/test-0234-1.i [2022-12-13 21:24:40,318 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 21:24:40,542 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 21:24:40,542 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9656362c-97b5-4c04-809d-86c8c00f5bc2/sv-benchmarks/c/memsafety/test-0234-1.i [2022-12-13 21:24:40,554 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9656362c-97b5-4c04-809d-86c8c00f5bc2/bin/uautomizer-uyxdKDjOR8/data/ce5af6f72/f9fb957cea534555a294d0efc59fe3a5/FLAGabf1cdb7e [2022-12-13 21:24:40,883 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9656362c-97b5-4c04-809d-86c8c00f5bc2/bin/uautomizer-uyxdKDjOR8/data/ce5af6f72/f9fb957cea534555a294d0efc59fe3a5 [2022-12-13 21:24:40,885 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 21:24:40,886 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 21:24:40,887 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 21:24:40,887 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 21:24:40,889 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 21:24:40,890 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 09:24:40" (1/1) ... [2022-12-13 21:24:40,891 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7549e446 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:24:40, skipping insertion in model container [2022-12-13 21:24:40,891 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 09:24:40" (1/1) ... [2022-12-13 21:24:40,898 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 21:24:40,921 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 21:24:41,131 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 21:24:41,138 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 21:24:41,168 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 21:24:41,189 INFO L208 MainTranslator]: Completed translation [2022-12-13 21:24:41,189 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:24:41 WrapperNode [2022-12-13 21:24:41,190 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 21:24:41,190 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 21:24:41,191 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 21:24:41,191 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 21:24:41,196 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:24:41" (1/1) ... [2022-12-13 21:24:41,207 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:24:41" (1/1) ... [2022-12-13 21:24:41,226 INFO L138 Inliner]: procedures = 188, calls = 60, calls flagged for inlining = 14, calls inlined = 14, statements flattened = 203 [2022-12-13 21:24:41,226 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 21:24:41,227 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 21:24:41,227 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 21:24:41,227 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 21:24:41,234 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:24:41" (1/1) ... [2022-12-13 21:24:41,234 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:24:41" (1/1) ... [2022-12-13 21:24:41,237 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:24:41" (1/1) ... [2022-12-13 21:24:41,237 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:24:41" (1/1) ... [2022-12-13 21:24:41,243 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:24:41" (1/1) ... [2022-12-13 21:24:41,246 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:24:41" (1/1) ... [2022-12-13 21:24:41,248 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:24:41" (1/1) ... [2022-12-13 21:24:41,249 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:24:41" (1/1) ... [2022-12-13 21:24:41,251 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 21:24:41,251 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 21:24:41,252 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 21:24:41,252 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 21:24:41,252 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:24:41" (1/1) ... [2022-12-13 21:24:41,257 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 21:24:41,271 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9656362c-97b5-4c04-809d-86c8c00f5bc2/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:24:41,282 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9656362c-97b5-4c04-809d-86c8c00f5bc2/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 21:24:41,284 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9656362c-97b5-4c04-809d-86c8c00f5bc2/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 21:24:41,313 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-13 21:24:41,314 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 21:24:41,314 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-12-13 21:24:41,314 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-12-13 21:24:41,314 INFO L130 BoogieDeclarations]: Found specification of procedure zalloc_or_die [2022-12-13 21:24:41,314 INFO L138 BoogieDeclarations]: Found implementation of procedure zalloc_or_die [2022-12-13 21:24:41,314 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 21:24:41,314 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-12-13 21:24:41,314 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 21:24:41,314 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 21:24:41,314 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 21:24:41,404 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 21:24:41,406 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 21:24:41,784 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 21:24:41,790 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 21:24:41,790 INFO L300 CfgBuilder]: Removed 10 assume(true) statements. [2022-12-13 21:24:41,792 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 09:24:41 BoogieIcfgContainer [2022-12-13 21:24:41,792 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 21:24:41,794 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 21:24:41,794 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 21:24:41,796 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 21:24:41,797 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 09:24:40" (1/3) ... [2022-12-13 21:24:41,797 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3833bff0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 09:24:41, skipping insertion in model container [2022-12-13 21:24:41,797 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:24:41" (2/3) ... [2022-12-13 21:24:41,797 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3833bff0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 09:24:41, skipping insertion in model container [2022-12-13 21:24:41,798 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 09:24:41" (3/3) ... [2022-12-13 21:24:41,799 INFO L112 eAbstractionObserver]: Analyzing ICFG test-0234-1.i [2022-12-13 21:24:41,813 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 21:24:41,813 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 75 error locations. [2022-12-13 21:24:41,849 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 21:24:41,854 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;@46e67b25, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 21:24:41,854 INFO L358 AbstractCegarLoop]: Starting to check reachability of 75 error locations. [2022-12-13 21:24:41,858 INFO L276 IsEmpty]: Start isEmpty. Operand has 191 states, 108 states have (on average 1.8981481481481481) internal successors, (205), 183 states have internal predecessors, (205), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-12-13 21:24:41,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-12-13 21:24:41,863 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:24:41,864 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-12-13 21:24:41,864 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr32REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 72 more)] === [2022-12-13 21:24:41,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:24:41,868 INFO L85 PathProgramCache]: Analyzing trace with hash 930118, now seen corresponding path program 1 times [2022-12-13 21:24:41,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:24:41,876 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [410919911] [2022-12-13 21:24:41,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:24:41,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:24:41,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:24:41,989 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 21:24:41,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:24:41,989 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [410919911] [2022-12-13 21:24:41,990 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [410919911] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:24:41,990 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:24:41,991 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 21:24:41,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324267973] [2022-12-13 21:24:41,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:24:41,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-13 21:24:41,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:24:42,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-13 21:24:42,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-13 21:24:42,026 INFO L87 Difference]: Start difference. First operand has 191 states, 108 states have (on average 1.8981481481481481) internal successors, (205), 183 states have internal predecessors, (205), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:24:42,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:24:42,055 INFO L93 Difference]: Finished difference Result 191 states and 206 transitions. [2022-12-13 21:24:42,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-13 21:24:42,057 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2022-12-13 21:24:42,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:24:42,065 INFO L225 Difference]: With dead ends: 191 [2022-12-13 21:24:42,065 INFO L226 Difference]: Without dead ends: 189 [2022-12-13 21:24:42,067 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-13 21:24:42,070 INFO L413 NwaCegarLoop]: 206 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 206 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 21:24:42,071 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 206 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 21:24:42,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2022-12-13 21:24:42,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 189. [2022-12-13 21:24:42,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 107 states have (on average 1.794392523364486) internal successors, (192), 181 states have internal predecessors, (192), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-12-13 21:24:42,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 204 transitions. [2022-12-13 21:24:42,108 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 204 transitions. Word has length 4 [2022-12-13 21:24:42,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:24:42,109 INFO L495 AbstractCegarLoop]: Abstraction has 189 states and 204 transitions. [2022-12-13 21:24:42,109 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:24:42,109 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 204 transitions. [2022-12-13 21:24:42,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-12-13 21:24:42,109 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:24:42,109 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-12-13 21:24:42,110 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 21:24:42,110 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting zalloc_or_dieErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 72 more)] === [2022-12-13 21:24:42,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:24:42,110 INFO L85 PathProgramCache]: Analyzing trace with hash 889842618, now seen corresponding path program 1 times [2022-12-13 21:24:42,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:24:42,111 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [27839401] [2022-12-13 21:24:42,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:24:42,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:24:42,123 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 21:24:42,123 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1533845965] [2022-12-13 21:24:42,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:24:42,123 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 21:24:42,123 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9656362c-97b5-4c04-809d-86c8c00f5bc2/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:24:42,124 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9656362c-97b5-4c04-809d-86c8c00f5bc2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 21:24:42,125 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9656362c-97b5-4c04-809d-86c8c00f5bc2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-13 21:24:42,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:24:42,185 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-13 21:24:42,189 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:24:42,229 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 21:24:42,237 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:24:42,237 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 21:24:42,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:24:42,238 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [27839401] [2022-12-13 21:24:42,238 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 21:24:42,238 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1533845965] [2022-12-13 21:24:42,238 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1533845965] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:24:42,238 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:24:42,238 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 21:24:42,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088135807] [2022-12-13 21:24:42,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:24:42,240 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 21:24:42,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:24:42,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 21:24:42,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 21:24:42,241 INFO L87 Difference]: Start difference. First operand 189 states and 204 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:24:42,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:24:42,360 INFO L93 Difference]: Finished difference Result 188 states and 203 transitions. [2022-12-13 21:24:42,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 21:24:42,361 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-12-13 21:24:42,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:24:42,362 INFO L225 Difference]: With dead ends: 188 [2022-12-13 21:24:42,362 INFO L226 Difference]: Without dead ends: 188 [2022-12-13 21:24:42,362 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 21:24:42,363 INFO L413 NwaCegarLoop]: 198 mSDtfsCounter, 9 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 316 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 21:24:42,364 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 316 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 21:24:42,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2022-12-13 21:24:42,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 188. [2022-12-13 21:24:42,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 107 states have (on average 1.7850467289719627) internal successors, (191), 180 states have internal predecessors, (191), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-12-13 21:24:42,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 203 transitions. [2022-12-13 21:24:42,375 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 203 transitions. Word has length 6 [2022-12-13 21:24:42,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:24:42,375 INFO L495 AbstractCegarLoop]: Abstraction has 188 states and 203 transitions. [2022-12-13 21:24:42,375 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:24:42,375 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 203 transitions. [2022-12-13 21:24:42,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-12-13 21:24:42,376 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:24:42,376 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:24:42,381 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9656362c-97b5-4c04-809d-86c8c00f5bc2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-13 21:24:42,576 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9656362c-97b5-4c04-809d-86c8c00f5bc2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 21:24:42,577 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting zalloc_or_dieErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 72 more)] === [2022-12-13 21:24:42,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:24:42,579 INFO L85 PathProgramCache]: Analyzing trace with hash 1815317712, now seen corresponding path program 1 times [2022-12-13 21:24:42,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:24:42,579 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1449249733] [2022-12-13 21:24:42,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:24:42,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:24:42,608 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 21:24:42,609 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [717344211] [2022-12-13 21:24:42,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:24:42,610 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 21:24:42,611 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9656362c-97b5-4c04-809d-86c8c00f5bc2/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:24:42,614 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9656362c-97b5-4c04-809d-86c8c00f5bc2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 21:24:42,617 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9656362c-97b5-4c04-809d-86c8c00f5bc2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-13 21:24:42,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:24:42,772 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 20 conjunts are in the unsatisfiable core [2022-12-13 21:24:42,774 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:24:42,805 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-12-13 21:24:42,825 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 21:24:42,825 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 21:24:42,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:24:42,825 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1449249733] [2022-12-13 21:24:42,825 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 21:24:42,826 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [717344211] [2022-12-13 21:24:42,826 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [717344211] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:24:42,826 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:24:42,826 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 21:24:42,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740381774] [2022-12-13 21:24:42,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:24:42,834 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 21:24:42,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:24:42,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 21:24:42,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 21:24:42,834 INFO L87 Difference]: Start difference. First operand 188 states and 203 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:24:42,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:24:42,969 INFO L93 Difference]: Finished difference Result 197 states and 212 transitions. [2022-12-13 21:24:42,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 21:24:42,969 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-12-13 21:24:42,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:24:42,970 INFO L225 Difference]: With dead ends: 197 [2022-12-13 21:24:42,970 INFO L226 Difference]: Without dead ends: 197 [2022-12-13 21:24:42,971 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-13 21:24:42,971 INFO L413 NwaCegarLoop]: 192 mSDtfsCounter, 16 mSDsluCounter, 327 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 519 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 21:24:42,972 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 519 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 21:24:42,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2022-12-13 21:24:42,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 197. [2022-12-13 21:24:42,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197 states, 115 states have (on average 1.7391304347826086) internal successors, (200), 188 states have internal predecessors, (200), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-12-13 21:24:42,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 212 transitions. [2022-12-13 21:24:42,979 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 212 transitions. Word has length 7 [2022-12-13 21:24:42,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:24:42,980 INFO L495 AbstractCegarLoop]: Abstraction has 197 states and 212 transitions. [2022-12-13 21:24:42,980 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:24:42,980 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 212 transitions. [2022-12-13 21:24:42,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-12-13 21:24:42,981 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:24:42,981 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 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 21:24:42,986 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9656362c-97b5-4c04-809d-86c8c00f5bc2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-13 21:24:43,182 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9656362c-97b5-4c04-809d-86c8c00f5bc2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-12-13 21:24:43,183 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting zalloc_or_dieErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 72 more)] === [2022-12-13 21:24:43,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:24:43,185 INFO L85 PathProgramCache]: Analyzing trace with hash -1660157209, now seen corresponding path program 1 times [2022-12-13 21:24:43,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:24:43,186 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2114636759] [2022-12-13 21:24:43,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:24:43,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:24:43,261 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 21:24:43,261 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [349780542] [2022-12-13 21:24:43,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:24:43,262 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 21:24:43,263 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9656362c-97b5-4c04-809d-86c8c00f5bc2/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:24:43,266 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9656362c-97b5-4c04-809d-86c8c00f5bc2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 21:24:43,269 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9656362c-97b5-4c04-809d-86c8c00f5bc2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-13 21:24:43,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:24:43,459 INFO L263 TraceCheckSpWp]: Trace formula consists of 504 conjuncts, 19 conjunts are in the unsatisfiable core [2022-12-13 21:24:43,466 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:24:43,528 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 21:24:43,614 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-12-13 21:24:43,797 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-12-13 21:24:43,798 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 21:24:43,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:24:43,798 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2114636759] [2022-12-13 21:24:43,798 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 21:24:43,798 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [349780542] [2022-12-13 21:24:43,798 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [349780542] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:24:43,798 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:24:43,798 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 21:24:43,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135101239] [2022-12-13 21:24:43,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:24:43,799 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 21:24:43,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:24:43,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 21:24:43,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 21:24:43,800 INFO L87 Difference]: Start difference. First operand 197 states and 212 transitions. Second operand has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2022-12-13 21:24:45,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:24:45,765 INFO L93 Difference]: Finished difference Result 209 states and 224 transitions. [2022-12-13 21:24:45,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 21:24:45,766 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) Word has length 66 [2022-12-13 21:24:45,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:24:45,767 INFO L225 Difference]: With dead ends: 209 [2022-12-13 21:24:45,767 INFO L226 Difference]: Without dead ends: 199 [2022-12-13 21:24:45,767 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-12-13 21:24:45,768 INFO L413 NwaCegarLoop]: 191 mSDtfsCounter, 19 mSDsluCounter, 494 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 685 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-12-13 21:24:45,768 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 685 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-12-13 21:24:45,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2022-12-13 21:24:45,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 199. [2022-12-13 21:24:45,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199 states, 117 states have (on average 1.7264957264957266) internal successors, (202), 190 states have internal predecessors, (202), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-12-13 21:24:45,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 214 transitions. [2022-12-13 21:24:45,774 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 214 transitions. Word has length 66 [2022-12-13 21:24:45,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:24:45,774 INFO L495 AbstractCegarLoop]: Abstraction has 199 states and 214 transitions. [2022-12-13 21:24:45,774 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2022-12-13 21:24:45,774 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 214 transitions. [2022-12-13 21:24:45,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-12-13 21:24:45,775 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:24:45,775 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 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 21:24:45,780 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9656362c-97b5-4c04-809d-86c8c00f5bc2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-13 21:24:45,976 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9656362c-97b5-4c04-809d-86c8c00f5bc2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 21:24:45,977 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting zalloc_or_dieErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 72 more)] === [2022-12-13 21:24:45,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:24:45,979 INFO L85 PathProgramCache]: Analyzing trace with hash -359143275, now seen corresponding path program 1 times [2022-12-13 21:24:45,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:24:45,980 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168052756] [2022-12-13 21:24:45,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:24:45,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:24:46,003 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 21:24:46,004 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1980208918] [2022-12-13 21:24:46,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:24:46,004 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 21:24:46,004 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9656362c-97b5-4c04-809d-86c8c00f5bc2/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:24:46,005 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9656362c-97b5-4c04-809d-86c8c00f5bc2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 21:24:46,006 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9656362c-97b5-4c04-809d-86c8c00f5bc2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-13 21:24:46,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:24:46,256 INFO L263 TraceCheckSpWp]: Trace formula consists of 579 conjuncts, 29 conjunts are in the unsatisfiable core [2022-12-13 21:24:46,261 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:24:46,282 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 21:24:46,305 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-13 21:24:46,367 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 102 proven. 5 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-12-13 21:24:46,367 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 21:24:46,543 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 37 proven. 23 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2022-12-13 21:24:46,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:24:46,543 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168052756] [2022-12-13 21:24:46,543 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 21:24:46,544 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1980208918] [2022-12-13 21:24:46,544 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1980208918] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 21:24:46,544 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 21:24:46,544 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 11 [2022-12-13 21:24:46,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53548065] [2022-12-13 21:24:46,544 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 21:24:46,545 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-12-13 21:24:46,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:24:46,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-12-13 21:24:46,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2022-12-13 21:24:46,546 INFO L87 Difference]: Start difference. First operand 199 states and 214 transitions. Second operand has 11 states, 11 states have (on average 4.636363636363637) internal successors, (51), 11 states have internal predecessors, (51), 2 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-12-13 21:24:46,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:24:46,863 INFO L93 Difference]: Finished difference Result 218 states and 234 transitions. [2022-12-13 21:24:46,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-13 21:24:46,863 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.636363636363637) internal successors, (51), 11 states have internal predecessors, (51), 2 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 71 [2022-12-13 21:24:46,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:24:46,865 INFO L225 Difference]: With dead ends: 218 [2022-12-13 21:24:46,865 INFO L226 Difference]: Without dead ends: 203 [2022-12-13 21:24:46,865 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=113, Invalid=229, Unknown=0, NotChecked=0, Total=342 [2022-12-13 21:24:46,866 INFO L413 NwaCegarLoop]: 191 mSDtfsCounter, 52 mSDsluCounter, 691 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 882 SdHoareTripleChecker+Invalid, 176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-13 21:24:46,867 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 882 Invalid, 176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-13 21:24:46,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2022-12-13 21:24:46,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 203. [2022-12-13 21:24:46,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 203 states, 121 states have (on average 1.7024793388429753) internal successors, (206), 194 states have internal predecessors, (206), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-12-13 21:24:46,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 218 transitions. [2022-12-13 21:24:46,876 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 218 transitions. Word has length 71 [2022-12-13 21:24:46,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:24:46,876 INFO L495 AbstractCegarLoop]: Abstraction has 203 states and 218 transitions. [2022-12-13 21:24:46,876 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.636363636363637) internal successors, (51), 11 states have internal predecessors, (51), 2 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-12-13 21:24:46,887 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 218 transitions. [2022-12-13 21:24:46,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-12-13 21:24:46,889 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:24:46,889 INFO L195 NwaCegarLoop]: trace histogram [20, 6, 6, 5, 5, 5, 5, 5, 5, 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 21:24:46,894 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9656362c-97b5-4c04-809d-86c8c00f5bc2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-13 21:24:47,090 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9656362c-97b5-4c04-809d-86c8c00f5bc2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 21:24:47,090 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting zalloc_or_dieErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 72 more)] === [2022-12-13 21:24:47,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:24:47,091 INFO L85 PathProgramCache]: Analyzing trace with hash 2015734887, now seen corresponding path program 2 times [2022-12-13 21:24:47,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:24:47,091 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [147381730] [2022-12-13 21:24:47,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:24:47,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:24:47,120 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 21:24:47,120 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [646578270] [2022-12-13 21:24:47,120 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 21:24:47,120 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 21:24:47,121 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9656362c-97b5-4c04-809d-86c8c00f5bc2/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:24:47,122 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9656362c-97b5-4c04-809d-86c8c00f5bc2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 21:24:47,123 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9656362c-97b5-4c04-809d-86c8c00f5bc2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-13 21:24:47,620 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 21:24:47,620 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 21:24:47,624 INFO L263 TraceCheckSpWp]: Trace formula consists of 804 conjuncts, 28 conjunts are in the unsatisfiable core [2022-12-13 21:24:47,627 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:24:47,637 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 21:24:47,659 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-13 21:24:47,756 INFO L134 CoverageAnalysis]: Checked inductivity of 395 backedges. 135 proven. 10 refuted. 0 times theorem prover too weak. 250 trivial. 0 not checked. [2022-12-13 21:24:47,756 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 21:24:48,078 INFO L134 CoverageAnalysis]: Checked inductivity of 395 backedges. 15 proven. 138 refuted. 0 times theorem prover too weak. 242 trivial. 0 not checked. [2022-12-13 21:24:48,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:24:48,078 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [147381730] [2022-12-13 21:24:48,078 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 21:24:48,078 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [646578270] [2022-12-13 21:24:48,078 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [646578270] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 21:24:48,079 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 21:24:48,079 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2022-12-13 21:24:48,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662904967] [2022-12-13 21:24:48,079 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 21:24:48,079 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-12-13 21:24:48,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:24:48,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-12-13 21:24:48,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2022-12-13 21:24:48,080 INFO L87 Difference]: Start difference. First operand 203 states and 218 transitions. Second operand has 16 states, 16 states have (on average 3.4375) internal successors, (55), 16 states have internal predecessors, (55), 2 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) [2022-12-13 21:24:48,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:24:48,618 INFO L93 Difference]: Finished difference Result 243 states and 262 transitions. [2022-12-13 21:24:48,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-12-13 21:24:48,619 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.4375) internal successors, (55), 16 states have internal predecessors, (55), 2 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) Word has length 86 [2022-12-13 21:24:48,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:24:48,620 INFO L225 Difference]: With dead ends: 243 [2022-12-13 21:24:48,620 INFO L226 Difference]: Without dead ends: 213 [2022-12-13 21:24:48,620 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=221, Invalid=535, Unknown=0, NotChecked=0, Total=756 [2022-12-13 21:24:48,620 INFO L413 NwaCegarLoop]: 197 mSDtfsCounter, 54 mSDsluCounter, 1088 mSDsCounter, 0 mSdLazyCounter, 232 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 1285 SdHoareTripleChecker+Invalid, 246 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 232 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-13 21:24:48,621 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 1285 Invalid, 246 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 232 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-13 21:24:48,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2022-12-13 21:24:48,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 213. [2022-12-13 21:24:48,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 213 states, 131 states have (on average 1.6488549618320612) internal successors, (216), 204 states have internal predecessors, (216), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-12-13 21:24:48,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 228 transitions. [2022-12-13 21:24:48,626 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 228 transitions. Word has length 86 [2022-12-13 21:24:48,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:24:48,626 INFO L495 AbstractCegarLoop]: Abstraction has 213 states and 228 transitions. [2022-12-13 21:24:48,626 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.4375) internal successors, (55), 16 states have internal predecessors, (55), 2 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) [2022-12-13 21:24:48,626 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 228 transitions. [2022-12-13 21:24:48,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-12-13 21:24:48,627 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:24:48,627 INFO L195 NwaCegarLoop]: trace histogram [40, 6, 6, 5, 5, 5, 5, 5, 5, 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 21:24:48,638 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9656362c-97b5-4c04-809d-86c8c00f5bc2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-12-13 21:24:48,828 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9656362c-97b5-4c04-809d-86c8c00f5bc2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-12-13 21:24:48,828 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting zalloc_or_dieErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 72 more)] === [2022-12-13 21:24:48,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:24:48,829 INFO L85 PathProgramCache]: Analyzing trace with hash 1853789671, now seen corresponding path program 3 times [2022-12-13 21:24:48,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:24:48,829 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [778352777] [2022-12-13 21:24:48,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:24:48,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:24:48,881 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 21:24:48,881 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1787318578] [2022-12-13 21:24:48,881 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-13 21:24:48,881 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 21:24:48,881 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9656362c-97b5-4c04-809d-86c8c00f5bc2/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:24:48,883 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9656362c-97b5-4c04-809d-86c8c00f5bc2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 21:24:48,884 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9656362c-97b5-4c04-809d-86c8c00f5bc2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-13 21:24:49,038 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-12-13 21:24:49,038 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 21:24:49,040 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 20 conjunts are in the unsatisfiable core [2022-12-13 21:24:49,045 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:24:49,067 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-12-13 21:24:49,082 INFO L134 CoverageAnalysis]: Checked inductivity of 1085 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 1070 trivial. 0 not checked. [2022-12-13 21:24:49,082 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 21:24:49,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:24:49,082 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [778352777] [2022-12-13 21:24:49,082 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 21:24:49,083 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1787318578] [2022-12-13 21:24:49,083 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1787318578] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:24:49,083 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:24:49,083 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 21:24:49,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559516590] [2022-12-13 21:24:49,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:24:49,084 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 21:24:49,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:24:49,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 21:24:49,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 21:24:49,084 INFO L87 Difference]: Start difference. First operand 213 states and 228 transitions. Second operand has 4 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-12-13 21:24:49,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:24:49,193 INFO L93 Difference]: Finished difference Result 212 states and 227 transitions. [2022-12-13 21:24:49,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 21:24:49,193 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 106 [2022-12-13 21:24:49,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:24:49,195 INFO L225 Difference]: With dead ends: 212 [2022-12-13 21:24:49,195 INFO L226 Difference]: Without dead ends: 212 [2022-12-13 21:24:49,195 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-13 21:24:49,196 INFO L413 NwaCegarLoop]: 190 mSDtfsCounter, 16 mSDsluCounter, 313 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 503 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 21:24:49,196 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 503 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 21:24:49,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2022-12-13 21:24:49,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 212. [2022-12-13 21:24:49,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 212 states, 131 states have (on average 1.6412213740458015) internal successors, (215), 203 states have internal predecessors, (215), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-12-13 21:24:49,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 227 transitions. [2022-12-13 21:24:49,203 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 227 transitions. Word has length 106 [2022-12-13 21:24:49,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:24:49,203 INFO L495 AbstractCegarLoop]: Abstraction has 212 states and 227 transitions. [2022-12-13 21:24:49,204 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-12-13 21:24:49,204 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 227 transitions. [2022-12-13 21:24:49,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2022-12-13 21:24:49,205 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:24:49,205 INFO L195 NwaCegarLoop]: trace histogram [48, 6, 6, 6, 6, 6, 6, 6, 6, 1, 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 21:24:49,211 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9656362c-97b5-4c04-809d-86c8c00f5bc2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-12-13 21:24:49,406 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9656362c-97b5-4c04-809d-86c8c00f5bc2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 21:24:49,406 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 72 more)] === [2022-12-13 21:24:49,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:24:49,407 INFO L85 PathProgramCache]: Analyzing trace with hash 1349401770, now seen corresponding path program 1 times [2022-12-13 21:24:49,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:24:49,407 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1946387514] [2022-12-13 21:24:49,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:24:49,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:24:49,464 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 21:24:49,464 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1992625859] [2022-12-13 21:24:49,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:24:49,465 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 21:24:49,465 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9656362c-97b5-4c04-809d-86c8c00f5bc2/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:24:49,466 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9656362c-97b5-4c04-809d-86c8c00f5bc2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 21:24:49,467 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9656362c-97b5-4c04-809d-86c8c00f5bc2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-13 21:24:49,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:24:49,753 INFO L263 TraceCheckSpWp]: Trace formula consists of 1253 conjuncts, 22 conjunts are in the unsatisfiable core [2022-12-13 21:24:49,759 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:24:49,822 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_1495 Int)) (= |c_#valid| (store |c_old(#valid)| |c_zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| v_ArrVal_1495))) is different from true [2022-12-13 21:24:49,924 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-12-13 21:24:49,924 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 14 [2022-12-13 21:24:49,938 INFO L134 CoverageAnalysis]: Checked inductivity of 1551 backedges. 709 proven. 87 refuted. 0 times theorem prover too weak. 754 trivial. 1 not checked. [2022-12-13 21:24:49,938 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 21:24:50,156 INFO L321 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-12-13 21:24:50,156 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 12 treesize of output 11 [2022-12-13 21:24:50,170 INFO L134 CoverageAnalysis]: Checked inductivity of 1551 backedges. 709 proven. 88 refuted. 0 times theorem prover too weak. 754 trivial. 0 not checked. [2022-12-13 21:24:50,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:24:50,171 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1946387514] [2022-12-13 21:24:50,171 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 21:24:50,171 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1992625859] [2022-12-13 21:24:50,171 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1992625859] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 21:24:50,171 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 21:24:50,171 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 13 [2022-12-13 21:24:50,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746516649] [2022-12-13 21:24:50,171 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 21:24:50,172 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-12-13 21:24:50,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:24:50,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-12-13 21:24:50,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=129, Unknown=1, NotChecked=22, Total=182 [2022-12-13 21:24:50,173 INFO L87 Difference]: Start difference. First operand 212 states and 227 transitions. Second operand has 14 states, 13 states have (on average 3.769230769230769) internal successors, (49), 12 states have internal predecessors, (49), 2 states have call successors, (7), 3 states have call predecessors, (7), 4 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-12-13 21:24:50,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:24:50,796 INFO L93 Difference]: Finished difference Result 249 states and 268 transitions. [2022-12-13 21:24:50,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-13 21:24:50,797 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 3.769230769230769) internal successors, (49), 12 states have internal predecessors, (49), 2 states have call successors, (7), 3 states have call predecessors, (7), 4 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 121 [2022-12-13 21:24:50,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:24:50,798 INFO L225 Difference]: With dead ends: 249 [2022-12-13 21:24:50,798 INFO L226 Difference]: Without dead ends: 249 [2022-12-13 21:24:50,798 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 247 GetRequests, 226 SyntacticMatches, 3 SemanticMatches, 18 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=84, Invalid=261, Unknown=1, NotChecked=34, Total=380 [2022-12-13 21:24:50,799 INFO L413 NwaCegarLoop]: 158 mSDtfsCounter, 125 mSDsluCounter, 1085 mSDsCounter, 0 mSdLazyCounter, 767 mSolverCounterSat, 22 mSolverCounterUnsat, 25 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 1243 SdHoareTripleChecker+Invalid, 1030 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 767 IncrementalHoareTripleChecker+Invalid, 25 IncrementalHoareTripleChecker+Unknown, 216 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-12-13 21:24:50,799 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [125 Valid, 1243 Invalid, 1030 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 767 Invalid, 25 Unknown, 216 Unchecked, 0.5s Time] [2022-12-13 21:24:50,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2022-12-13 21:24:50,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 210. [2022-12-13 21:24:50,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210 states, 131 states have (on average 1.6259541984732824) internal successors, (213), 201 states have internal predecessors, (213), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-12-13 21:24:50,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 225 transitions. [2022-12-13 21:24:50,803 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 225 transitions. Word has length 121 [2022-12-13 21:24:50,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:24:50,804 INFO L495 AbstractCegarLoop]: Abstraction has 210 states and 225 transitions. [2022-12-13 21:24:50,804 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 3.769230769230769) internal successors, (49), 12 states have internal predecessors, (49), 2 states have call successors, (7), 3 states have call predecessors, (7), 4 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-12-13 21:24:50,804 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 225 transitions. [2022-12-13 21:24:50,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2022-12-13 21:24:50,805 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:24:50,806 INFO L195 NwaCegarLoop]: trace histogram [48, 6, 6, 6, 6, 6, 6, 6, 6, 1, 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 21:24:50,812 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9656362c-97b5-4c04-809d-86c8c00f5bc2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-12-13 21:24:51,006 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9656362c-97b5-4c04-809d-86c8c00f5bc2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 21:24:51,008 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 72 more)] === [2022-12-13 21:24:51,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:24:51,009 INFO L85 PathProgramCache]: Analyzing trace with hash 1349401771, now seen corresponding path program 1 times [2022-12-13 21:24:51,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:24:51,010 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2031163997] [2022-12-13 21:24:51,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:24:51,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:24:51,106 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 21:24:51,106 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [247669067] [2022-12-13 21:24:51,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:24:51,106 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 21:24:51,106 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9656362c-97b5-4c04-809d-86c8c00f5bc2/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:24:51,107 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9656362c-97b5-4c04-809d-86c8c00f5bc2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 21:24:51,108 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9656362c-97b5-4c04-809d-86c8c00f5bc2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-12-13 21:24:52,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:24:52,428 INFO L263 TraceCheckSpWp]: Trace formula consists of 1253 conjuncts, 74 conjunts are in the unsatisfiable core [2022-12-13 21:24:52,431 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:24:52,485 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 21:25:02,668 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_2100 Int) (|zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| Int)) (and (= |c_#length| (store |c_old(#length)| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| v_ArrVal_2100)) (= (select |c_old(#valid)| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base|) 0))) is different from true [2022-12-13 21:25:02,817 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:25:02,818 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-12-13 21:25:02,853 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-12-13 21:25:02,853 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 11 treesize of output 11 [2022-12-13 21:25:03,503 INFO L134 CoverageAnalysis]: Checked inductivity of 1551 backedges. 590 proven. 316 refuted. 0 times theorem prover too weak. 494 trivial. 151 not checked. [2022-12-13 21:25:03,503 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 21:25:09,866 WARN L233 SmtUtils]: Spent 6.07s on a formula simplification that was a NOOP. DAG size: 24 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 21:25:09,867 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:25:09,867 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2031163997] [2022-12-13 21:25:09,868 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 21:25:09,868 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [247669067] [2022-12-13 21:25:09,868 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [247669067] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 21:25:09,868 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-12-13 21:25:09,868 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2022-12-13 21:25:09,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712372198] [2022-12-13 21:25:09,868 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-12-13 21:25:09,869 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-12-13 21:25:09,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:25:09,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-12-13 21:25:09,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=737, Unknown=3, NotChecked=54, Total=870 [2022-12-13 21:25:09,870 INFO L87 Difference]: Start difference. First operand 210 states and 225 transitions. Second operand has 28 states, 26 states have (on average 2.1153846153846154) internal successors, (55), 25 states have internal predecessors, (55), 2 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2022-12-13 21:25:11,901 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-12-13 21:25:13,914 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-12-13 21:25:20,181 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-12-13 21:25:22,286 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-12-13 21:25:24,410 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-12-13 21:25:26,553 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-12-13 21:25:30,728 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-12-13 21:25:32,850 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-12-13 21:25:35,005 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-12-13 21:26:03,723 WARN L233 SmtUtils]: Spent 8.77s on a formula simplification that was a NOOP. DAG size: 54 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 21:26:15,133 WARN L233 SmtUtils]: Spent 11.21s on a formula simplification that was a NOOP. DAG size: 63 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 21:26:21,412 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-12-13 21:26:23,506 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-12-13 21:26:25,678 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-12-13 21:26:25,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:26:25,685 INFO L93 Difference]: Finished difference Result 253 states and 275 transitions. [2022-12-13 21:26:25,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-12-13 21:26:25,686 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 26 states have (on average 2.1153846153846154) internal successors, (55), 25 states have internal predecessors, (55), 2 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) Word has length 121 [2022-12-13 21:26:25,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:26:25,688 INFO L225 Difference]: With dead ends: 253 [2022-12-13 21:26:25,688 INFO L226 Difference]: Without dead ends: 253 [2022-12-13 21:26:25,689 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 262 ImplicationChecksByTransitivity, 62.6s TimeCoverageRelationStatistics Valid=187, Invalid=1613, Unknown=10, NotChecked=82, Total=1892 [2022-12-13 21:26:25,689 INFO L413 NwaCegarLoop]: 127 mSDtfsCounter, 233 mSDsluCounter, 2066 mSDsCounter, 0 mSdLazyCounter, 2216 mSolverCounterSat, 11 mSolverCounterUnsat, 12 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 29.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 233 SdHoareTripleChecker+Valid, 2193 SdHoareTripleChecker+Invalid, 2435 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 2216 IncrementalHoareTripleChecker+Invalid, 12 IncrementalHoareTripleChecker+Unknown, 196 IncrementalHoareTripleChecker+Unchecked, 29.6s IncrementalHoareTripleChecker+Time [2022-12-13 21:26:25,689 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [233 Valid, 2193 Invalid, 2435 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 2216 Invalid, 12 Unknown, 196 Unchecked, 29.6s Time] [2022-12-13 21:26:25,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2022-12-13 21:26:25,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 208. [2022-12-13 21:26:25,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 131 states have (on average 1.6106870229007633) internal successors, (211), 199 states have internal predecessors, (211), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-12-13 21:26:25,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 223 transitions. [2022-12-13 21:26:25,693 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 223 transitions. Word has length 121 [2022-12-13 21:26:25,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:26:25,693 INFO L495 AbstractCegarLoop]: Abstraction has 208 states and 223 transitions. [2022-12-13 21:26:25,693 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 26 states have (on average 2.1153846153846154) internal successors, (55), 25 states have internal predecessors, (55), 2 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2022-12-13 21:26:25,693 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 223 transitions. [2022-12-13 21:26:25,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-12-13 21:26:25,694 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:26:25,695 INFO L195 NwaCegarLoop]: trace histogram [48, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 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 21:26:25,715 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9656362c-97b5-4c04-809d-86c8c00f5bc2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-12-13 21:26:25,895 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9656362c-97b5-4c04-809d-86c8c00f5bc2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 21:26:25,896 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 72 more)] === [2022-12-13 21:26:25,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:26:25,897 INFO L85 PathProgramCache]: Analyzing trace with hash -305022197, now seen corresponding path program 1 times [2022-12-13 21:26:25,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:26:25,898 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [60592707] [2022-12-13 21:26:25,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:26:25,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:26:25,966 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 21:26:25,967 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [326681893] [2022-12-13 21:26:25,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:26:25,967 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 21:26:25,967 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9656362c-97b5-4c04-809d-86c8c00f5bc2/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:26:25,968 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9656362c-97b5-4c04-809d-86c8c00f5bc2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 21:26:25,969 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9656362c-97b5-4c04-809d-86c8c00f5bc2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-12-13 21:26:26,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:26:26,260 INFO L263 TraceCheckSpWp]: Trace formula consists of 1270 conjuncts, 33 conjunts are in the unsatisfiable core [2022-12-13 21:26:26,264 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:26:26,331 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_2716 Int)) (= |c_#valid| (store |c_old(#valid)| |c_zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| v_ArrVal_2716))) is different from true [2022-12-13 21:26:26,405 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-12-13 21:26:26,405 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 14 [2022-12-13 21:26:26,422 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_2717 Int)) (= |c_#valid| (store |c_old(#valid)| |c_zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| v_ArrVal_2717))) is different from true [2022-12-13 21:26:26,512 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-12-13 21:26:26,513 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 14 [2022-12-13 21:26:26,529 INFO L134 CoverageAnalysis]: Checked inductivity of 1551 backedges. 800 proven. 174 refuted. 0 times theorem prover too weak. 574 trivial. 3 not checked. [2022-12-13 21:26:26,529 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 21:26:26,882 INFO L321 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-12-13 21:26:26,882 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 12 treesize of output 11 [2022-12-13 21:26:26,895 INFO L134 CoverageAnalysis]: Checked inductivity of 1551 backedges. 800 proven. 176 refuted. 0 times theorem prover too weak. 575 trivial. 0 not checked. [2022-12-13 21:26:26,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:26:26,895 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [60592707] [2022-12-13 21:26:26,895 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 21:26:26,895 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [326681893] [2022-12-13 21:26:26,895 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [326681893] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 21:26:26,895 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 21:26:26,896 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11] total 15 [2022-12-13 21:26:26,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322265880] [2022-12-13 21:26:26,896 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 21:26:26,896 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-12-13 21:26:26,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:26:26,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-12-13 21:26:26,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=154, Unknown=2, NotChecked=50, Total=240 [2022-12-13 21:26:26,897 INFO L87 Difference]: Start difference. First operand 208 states and 223 transitions. Second operand has 16 states, 15 states have (on average 3.533333333333333) internal successors, (53), 14 states have internal predecessors, (53), 2 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2022-12-13 21:26:27,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:26:27,469 INFO L93 Difference]: Finished difference Result 244 states and 263 transitions. [2022-12-13 21:26:27,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-13 21:26:27,469 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 3.533333333333333) internal successors, (53), 14 states have internal predecessors, (53), 2 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) Word has length 123 [2022-12-13 21:26:27,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:26:27,470 INFO L225 Difference]: With dead ends: 244 [2022-12-13 21:26:27,470 INFO L226 Difference]: Without dead ends: 244 [2022-12-13 21:26:27,471 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 224 SyntacticMatches, 8 SemanticMatches, 22 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=96, Invalid=372, Unknown=2, NotChecked=82, Total=552 [2022-12-13 21:26:27,471 INFO L413 NwaCegarLoop]: 151 mSDtfsCounter, 221 mSDsluCounter, 1099 mSDsCounter, 0 mSdLazyCounter, 861 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 221 SdHoareTripleChecker+Valid, 1250 SdHoareTripleChecker+Invalid, 1349 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 861 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 460 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-12-13 21:26:27,471 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [221 Valid, 1250 Invalid, 1349 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 861 Invalid, 0 Unknown, 460 Unchecked, 0.4s Time] [2022-12-13 21:26:27,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2022-12-13 21:26:27,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 205. [2022-12-13 21:26:27,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 205 states, 131 states have (on average 1.5877862595419847) internal successors, (208), 196 states have internal predecessors, (208), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-12-13 21:26:27,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 220 transitions. [2022-12-13 21:26:27,475 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 220 transitions. Word has length 123 [2022-12-13 21:26:27,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:26:27,475 INFO L495 AbstractCegarLoop]: Abstraction has 205 states and 220 transitions. [2022-12-13 21:26:27,475 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 3.533333333333333) internal successors, (53), 14 states have internal predecessors, (53), 2 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2022-12-13 21:26:27,476 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 220 transitions. [2022-12-13 21:26:27,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-12-13 21:26:27,476 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:26:27,476 INFO L195 NwaCegarLoop]: trace histogram [48, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 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 21:26:27,482 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9656362c-97b5-4c04-809d-86c8c00f5bc2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-12-13 21:26:27,677 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9656362c-97b5-4c04-809d-86c8c00f5bc2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-12-13 21:26:27,677 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 72 more)] === [2022-12-13 21:26:27,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:26:27,678 INFO L85 PathProgramCache]: Analyzing trace with hash -305022196, now seen corresponding path program 1 times [2022-12-13 21:26:27,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:26:27,679 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1011294060] [2022-12-13 21:26:27,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:26:27,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:26:27,753 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 21:26:27,753 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1000517358] [2022-12-13 21:26:27,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:26:27,753 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 21:26:27,753 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9656362c-97b5-4c04-809d-86c8c00f5bc2/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:26:27,754 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9656362c-97b5-4c04-809d-86c8c00f5bc2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 21:26:27,755 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9656362c-97b5-4c04-809d-86c8c00f5bc2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-12-13 21:26:29,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:26:29,693 INFO L263 TraceCheckSpWp]: Trace formula consists of 1270 conjuncts, 79 conjunts are in the unsatisfiable core [2022-12-13 21:26:29,696 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:26:29,718 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 21:26:41,281 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_3337 Int) (v_ArrVal_3338 Int) (|zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| Int)) (and (= |c_#valid| (store |c_old(#valid)| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| v_ArrVal_3337)) (= (store |c_old(#length)| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| v_ArrVal_3338) |c_#length|) (= (select |c_old(#valid)| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base|) 0))) is different from true [2022-12-13 21:26:41,420 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:26:41,421 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-12-13 21:26:41,482 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-13 21:26:41,482 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-12-13 21:26:41,556 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_3339 Int) (|zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| Int)) (and (= (store |c_old(#length)| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| v_ArrVal_3339) |c_#length|) (= (select |c_old(#valid)| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base|) 0))) is different from true [2022-12-13 21:26:41,672 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:26:41,673 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-12-13 21:26:41,679 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-12-13 21:26:41,679 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 11 treesize of output 11 [2022-12-13 21:26:42,537 INFO L134 CoverageAnalysis]: Checked inductivity of 1551 backedges. 696 proven. 160 refuted. 0 times theorem prover too weak. 359 trivial. 336 not checked. [2022-12-13 21:26:42,537 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 21:26:42,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:26:42,874 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1011294060] [2022-12-13 21:26:42,874 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 21:26:42,874 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1000517358] [2022-12-13 21:26:42,874 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1000517358] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 21:26:42,874 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-12-13 21:26:42,874 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2022-12-13 21:26:42,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62396880] [2022-12-13 21:26:42,874 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-12-13 21:26:42,875 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-12-13 21:26:42,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:26:42,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-12-13 21:26:42,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=493, Unknown=5, NotChecked=90, Total=650 [2022-12-13 21:26:42,876 INFO L87 Difference]: Start difference. First operand 205 states and 220 transitions. Second operand has 24 states, 23 states have (on average 2.652173913043478) internal successors, (61), 22 states have internal predecessors, (61), 2 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (6), 4 states have call predecessors, (6), 2 states have call successors, (6) [2022-12-13 21:26:44,901 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-12-13 21:26:46,914 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-12-13 21:26:51,048 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-12-13 21:26:53,134 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-12-13 21:26:57,364 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-12-13 21:27:01,475 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-12-13 21:27:05,635 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-12-13 21:27:26,092 WARN L233 SmtUtils]: Spent 10.71s on a formula simplification. DAG size of input: 53 DAG size of output: 48 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 21:27:39,695 WARN L233 SmtUtils]: Spent 13.02s on a formula simplification. DAG size of input: 62 DAG size of output: 57 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 21:28:01,715 WARN L233 SmtUtils]: Spent 21.37s on a formula simplification. DAG size of input: 71 DAG size of output: 66 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 21:28:08,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:28:08,217 INFO L93 Difference]: Finished difference Result 241 states and 260 transitions. [2022-12-13 21:28:08,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-12-13 21:28:08,217 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 2.652173913043478) internal successors, (61), 22 states have internal predecessors, (61), 2 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (6), 4 states have call predecessors, (6), 2 states have call successors, (6) Word has length 123 [2022-12-13 21:28:08,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:28:08,218 INFO L225 Difference]: With dead ends: 241 [2022-12-13 21:28:08,218 INFO L226 Difference]: Without dead ends: 241 [2022-12-13 21:28:08,219 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 76.6s TimeCoverageRelationStatistics Valid=163, Invalid=1166, Unknown=11, NotChecked=142, Total=1482 [2022-12-13 21:28:08,219 INFO L413 NwaCegarLoop]: 123 mSDtfsCounter, 323 mSDsluCounter, 1674 mSDsCounter, 0 mSdLazyCounter, 1871 mSolverCounterSat, 16 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 323 SdHoareTripleChecker+Valid, 1797 SdHoareTripleChecker+Invalid, 2285 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 1871 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 391 IncrementalHoareTripleChecker+Unchecked, 20.5s IncrementalHoareTripleChecker+Time [2022-12-13 21:28:08,219 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [323 Valid, 1797 Invalid, 2285 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 1871 Invalid, 7 Unknown, 391 Unchecked, 20.5s Time] [2022-12-13 21:28:08,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2022-12-13 21:28:08,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 203. [2022-12-13 21:28:08,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 203 states, 131 states have (on average 1.5725190839694656) internal successors, (206), 194 states have internal predecessors, (206), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-12-13 21:28:08,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 218 transitions. [2022-12-13 21:28:08,223 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 218 transitions. Word has length 123 [2022-12-13 21:28:08,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:28:08,223 INFO L495 AbstractCegarLoop]: Abstraction has 203 states and 218 transitions. [2022-12-13 21:28:08,223 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 2.652173913043478) internal successors, (61), 22 states have internal predecessors, (61), 2 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (6), 4 states have call predecessors, (6), 2 states have call successors, (6) [2022-12-13 21:28:08,223 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 218 transitions. [2022-12-13 21:28:08,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2022-12-13 21:28:08,224 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:28:08,224 INFO L195 NwaCegarLoop]: trace histogram [48, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:28:08,248 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9656362c-97b5-4c04-809d-86c8c00f5bc2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-12-13 21:28:08,425 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9656362c-97b5-4c04-809d-86c8c00f5bc2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-12-13 21:28:08,426 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 72 more)] === [2022-12-13 21:28:08,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:28:08,427 INFO L85 PathProgramCache]: Analyzing trace with hash 1713867913, now seen corresponding path program 1 times [2022-12-13 21:28:08,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:28:08,428 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [36710569] [2022-12-13 21:28:08,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:28:08,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:28:08,508 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 21:28:08,508 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [434112630] [2022-12-13 21:28:08,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:28:08,508 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 21:28:08,509 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9656362c-97b5-4c04-809d-86c8c00f5bc2/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:28:08,509 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9656362c-97b5-4c04-809d-86c8c00f5bc2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 21:28:08,510 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9656362c-97b5-4c04-809d-86c8c00f5bc2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-12-13 21:28:08,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:28:08,805 INFO L263 TraceCheckSpWp]: Trace formula consists of 1316 conjuncts, 48 conjunts are in the unsatisfiable core [2022-12-13 21:28:08,807 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:28:08,881 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_3979 Int) (|zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| Int)) (and (= |c_#valid| (store |c_old(#valid)| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| v_ArrVal_3979)) (= (select |c_old(#valid)| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base|) 0))) is different from true [2022-12-13 21:28:08,947 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-13 21:28:08,947 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-12-13 21:28:08,956 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_3980 Int)) (= |c_#valid| (store |c_old(#valid)| |c_zalloc_or_die_calloc_model_~ptr~0#1.base| v_ArrVal_3980))) is different from true [2022-12-13 21:28:08,973 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_3980 Int)) (= |c_#valid| (store |c_old(#valid)| |c_zalloc_or_die_calloc_model_#res#1.base| v_ArrVal_3980))) is different from true [2022-12-13 21:28:08,976 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_3980 Int)) (= |c_#valid| (store |c_old(#valid)| |c_zalloc_or_die_~ptr~1#1.base| v_ArrVal_3980))) is different from true [2022-12-13 21:28:08,979 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_3980 Int)) (= |c_#valid| (store |c_old(#valid)| |c_zalloc_or_die_#res#1.base| v_ArrVal_3980))) is different from true [2022-12-13 21:28:08,990 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-12-13 21:28:08,990 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 21:28:09,020 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_3981 Int)) (= |c_#valid| (store |c_old(#valid)| |c_zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| v_ArrVal_3981))) is different from true [2022-12-13 21:28:09,103 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-12-13 21:28:09,103 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 16 treesize of output 22 [2022-12-13 21:28:09,153 INFO L134 CoverageAnalysis]: Checked inductivity of 1551 backedges. 713 proven. 87 refuted. 0 times theorem prover too weak. 310 trivial. 441 not checked. [2022-12-13 21:28:09,153 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 21:28:09,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:28:09,671 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [36710569] [2022-12-13 21:28:09,671 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 21:28:09,672 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [434112630] [2022-12-13 21:28:09,672 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [434112630] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 21:28:09,672 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-12-13 21:28:09,672 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2022-12-13 21:28:09,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024967376] [2022-12-13 21:28:09,672 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-12-13 21:28:09,672 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-12-13 21:28:09,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:28:09,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-12-13 21:28:09,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=484, Unknown=6, NotChecked=294, Total=870 [2022-12-13 21:28:09,673 INFO L87 Difference]: Start difference. First operand 203 states and 218 transitions. Second operand has 21 states, 19 states have (on average 3.526315789473684) internal successors, (67), 17 states have internal predecessors, (67), 3 states have call successors, (6), 2 states have call predecessors, (6), 5 states have return successors, (6), 5 states have call predecessors, (6), 3 states have call successors, (6) [2022-12-13 21:28:10,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:28:10,368 INFO L93 Difference]: Finished difference Result 236 states and 254 transitions. [2022-12-13 21:28:10,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-12-13 21:28:10,368 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 19 states have (on average 3.526315789473684) internal successors, (67), 17 states have internal predecessors, (67), 3 states have call successors, (6), 2 states have call predecessors, (6), 5 states have return successors, (6), 5 states have call predecessors, (6), 3 states have call successors, (6) Word has length 130 [2022-12-13 21:28:10,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:28:10,369 INFO L225 Difference]: With dead ends: 236 [2022-12-13 21:28:10,369 INFO L226 Difference]: Without dead ends: 236 [2022-12-13 21:28:10,369 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 149 SyntacticMatches, 5 SemanticMatches, 35 ConstructedPredicates, 6 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=169, Invalid=779, Unknown=6, NotChecked=378, Total=1332 [2022-12-13 21:28:10,369 INFO L413 NwaCegarLoop]: 145 mSDtfsCounter, 466 mSDsluCounter, 1122 mSDsCounter, 0 mSdLazyCounter, 850 mSolverCounterSat, 39 mSolverCounterUnsat, 29 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 466 SdHoareTripleChecker+Valid, 1267 SdHoareTripleChecker+Invalid, 2260 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 850 IncrementalHoareTripleChecker+Invalid, 29 IncrementalHoareTripleChecker+Unknown, 1342 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-12-13 21:28:10,370 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [466 Valid, 1267 Invalid, 2260 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 850 Invalid, 29 Unknown, 1342 Unchecked, 0.5s Time] [2022-12-13 21:28:10,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2022-12-13 21:28:10,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 200. [2022-12-13 21:28:10,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200 states, 131 states have (on average 1.549618320610687) internal successors, (203), 191 states have internal predecessors, (203), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-12-13 21:28:10,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 215 transitions. [2022-12-13 21:28:10,373 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 215 transitions. Word has length 130 [2022-12-13 21:28:10,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:28:10,374 INFO L495 AbstractCegarLoop]: Abstraction has 200 states and 215 transitions. [2022-12-13 21:28:10,374 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 19 states have (on average 3.526315789473684) internal successors, (67), 17 states have internal predecessors, (67), 3 states have call successors, (6), 2 states have call predecessors, (6), 5 states have return successors, (6), 5 states have call predecessors, (6), 3 states have call successors, (6) [2022-12-13 21:28:10,374 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 215 transitions. [2022-12-13 21:28:10,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2022-12-13 21:28:10,375 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:28:10,376 INFO L195 NwaCegarLoop]: trace histogram [48, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:28:10,382 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9656362c-97b5-4c04-809d-86c8c00f5bc2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2022-12-13 21:28:10,576 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9656362c-97b5-4c04-809d-86c8c00f5bc2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-12-13 21:28:10,577 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 72 more)] === [2022-12-13 21:28:10,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:28:10,579 INFO L85 PathProgramCache]: Analyzing trace with hash 1713867914, now seen corresponding path program 1 times [2022-12-13 21:28:10,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:28:10,579 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1281629916] [2022-12-13 21:28:10,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:28:10,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:28:10,724 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 21:28:10,724 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1424281369] [2022-12-13 21:28:10,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:28:10,724 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 21:28:10,724 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9656362c-97b5-4c04-809d-86c8c00f5bc2/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:28:10,725 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9656362c-97b5-4c04-809d-86c8c00f5bc2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 21:28:10,726 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9656362c-97b5-4c04-809d-86c8c00f5bc2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-12-13 21:28:13,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:28:13,664 INFO L263 TraceCheckSpWp]: Trace formula consists of 1316 conjuncts, 142 conjunts are in the unsatisfiable core [2022-12-13 21:28:13,668 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:28:13,709 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 21:28:23,000 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-13 21:28:23,000 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-12-13 21:28:23,078 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-12-13 21:28:26,741 INFO L321 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2022-12-13 21:28:26,741 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 18 [2022-12-13 21:28:26,749 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-12-13 21:28:28,809 WARN L859 $PredicateComparison]: unable to prove that (exists ((|zalloc_or_die_calloc_model_~size#1| Int) (v_ArrVal_4631 Int) (|zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| Int) (|zalloc_or_die_calloc_model_~nmemb#1| Int)) (let ((.cse0 (* |zalloc_or_die_calloc_model_~nmemb#1| |zalloc_or_die_calloc_model_~size#1|))) (and (= (store |c_old(#length)| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| v_ArrVal_4631) |c_#length|) (<= (mod .cse0 4294967296) v_ArrVal_4631) (= |c_zalloc_or_die_#Ultimate.C_memset_#amount#1| .cse0)))) is different from true [2022-12-13 21:28:31,384 WARN L859 $PredicateComparison]: unable to prove that (exists ((|zalloc_or_die_calloc_model_~size#1| Int) (v_ArrVal_4631 Int) (|zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| Int) (|zalloc_or_die_calloc_model_~nmemb#1| Int)) (let ((.cse0 (mod (* |zalloc_or_die_calloc_model_~nmemb#1| |zalloc_or_die_calloc_model_~size#1|) 4294967296))) (and (< 7 .cse0) (= (store |c_old(#length)| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| v_ArrVal_4631) |c_#length|) (<= .cse0 v_ArrVal_4631)))) is different from true [2022-12-13 21:28:31,950 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-12-13 21:28:31,950 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 16 treesize of output 22 [2022-12-13 21:28:34,095 INFO L134 CoverageAnalysis]: Checked inductivity of 1551 backedges. 475 proven. 875 refuted. 0 times theorem prover too weak. 138 trivial. 63 not checked. [2022-12-13 21:28:34,095 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 21:28:38,097 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:28:38,097 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1281629916] [2022-12-13 21:28:38,097 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 21:28:38,097 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1424281369] [2022-12-13 21:28:38,097 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1424281369] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 21:28:38,097 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-12-13 21:28:38,097 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [51] total 51 [2022-12-13 21:28:38,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414372365] [2022-12-13 21:28:38,098 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-12-13 21:28:38,098 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2022-12-13 21:28:38,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:28:38,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2022-12-13 21:28:38,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=156, Invalid=2484, Unknown=20, NotChecked=202, Total=2862 [2022-12-13 21:28:38,099 INFO L87 Difference]: Start difference. First operand 200 states and 215 transitions. Second operand has 52 states, 49 states have (on average 1.816326530612245) internal successors, (89), 47 states have internal predecessors, (89), 4 states have call successors, (6), 3 states have call predecessors, (6), 5 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) [2022-12-13 21:28:40,140 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-12-13 21:28:42,167 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-12-13 21:28:46,319 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-12-13 21:28:50,492 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-12-13 21:28:54,670 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-12-13 21:28:58,864 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-12-13 21:29:03,060 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-12-13 21:29:07,281 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-12-13 21:29:11,491 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-12-13 21:29:15,687 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-12-13 21:29:29,837 WARN L233 SmtUtils]: Spent 6.09s on a formula simplification. DAG size of input: 45 DAG size of output: 39 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 21:29:37,994 WARN L233 SmtUtils]: Spent 6.12s on a formula simplification. DAG size of input: 62 DAG size of output: 42 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 21:29:53,036 WARN L233 SmtUtils]: Spent 8.38s on a formula simplification. DAG size of input: 96 DAG size of output: 58 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 21:30:04,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:30:04,436 INFO L93 Difference]: Finished difference Result 233 states and 252 transitions. [2022-12-13 21:30:04,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-12-13 21:30:04,437 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 49 states have (on average 1.816326530612245) internal successors, (89), 47 states have internal predecessors, (89), 4 states have call successors, (6), 3 states have call predecessors, (6), 5 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) Word has length 130 [2022-12-13 21:30:04,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:30:04,437 INFO L225 Difference]: With dead ends: 233 [2022-12-13 21:30:04,437 INFO L226 Difference]: Without dead ends: 233 [2022-12-13 21:30:04,438 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 90 SyntacticMatches, 1 SemanticMatches, 71 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 970 ImplicationChecksByTransitivity, 81.1s TimeCoverageRelationStatistics Valid=370, Invalid=4577, Unknown=31, NotChecked=278, Total=5256 [2022-12-13 21:30:04,439 INFO L413 NwaCegarLoop]: 117 mSDtfsCounter, 441 mSDsluCounter, 2873 mSDsCounter, 0 mSdLazyCounter, 3119 mSolverCounterSat, 26 mSolverCounterUnsat, 10 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 441 SdHoareTripleChecker+Valid, 2990 SdHoareTripleChecker+Invalid, 3617 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 3119 IncrementalHoareTripleChecker+Invalid, 10 IncrementalHoareTripleChecker+Unknown, 462 IncrementalHoareTripleChecker+Unchecked, 25.2s IncrementalHoareTripleChecker+Time [2022-12-13 21:30:04,439 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [441 Valid, 2990 Invalid, 3617 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 3119 Invalid, 10 Unknown, 462 Unchecked, 25.2s Time] [2022-12-13 21:30:04,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2022-12-13 21:30:04,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 197. [2022-12-13 21:30:04,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197 states, 131 states have (on average 1.5267175572519085) internal successors, (200), 188 states have internal predecessors, (200), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-12-13 21:30:04,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 212 transitions. [2022-12-13 21:30:04,444 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 212 transitions. Word has length 130 [2022-12-13 21:30:04,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:30:04,445 INFO L495 AbstractCegarLoop]: Abstraction has 197 states and 212 transitions. [2022-12-13 21:30:04,445 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 49 states have (on average 1.816326530612245) internal successors, (89), 47 states have internal predecessors, (89), 4 states have call successors, (6), 3 states have call predecessors, (6), 5 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) [2022-12-13 21:30:04,445 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 212 transitions. [2022-12-13 21:30:04,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2022-12-13 21:30:04,446 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:30:04,446 INFO L195 NwaCegarLoop]: trace histogram [48, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:30:04,472 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9656362c-97b5-4c04-809d-86c8c00f5bc2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2022-12-13 21:30:04,647 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9656362c-97b5-4c04-809d-86c8c00f5bc2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-12-13 21:30:04,648 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 72 more)] === [2022-12-13 21:30:04,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:30:04,649 INFO L85 PathProgramCache]: Analyzing trace with hash 1590297785, now seen corresponding path program 1 times [2022-12-13 21:30:04,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:30:04,650 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012000823] [2022-12-13 21:30:04,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:30:04,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:30:04,751 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 21:30:04,751 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1339401249] [2022-12-13 21:30:04,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:30:04,751 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 21:30:04,752 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9656362c-97b5-4c04-809d-86c8c00f5bc2/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:30:04,752 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9656362c-97b5-4c04-809d-86c8c00f5bc2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 21:30:04,753 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9656362c-97b5-4c04-809d-86c8c00f5bc2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-12-13 21:30:06,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:30:06,899 INFO L263 TraceCheckSpWp]: Trace formula consists of 1324 conjuncts, 104 conjunts are in the unsatisfiable core [2022-12-13 21:30:06,902 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:30:06,905 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-12-13 21:30:06,945 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 21:30:14,994 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-13 21:30:14,994 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-12-13 21:30:15,093 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-12-13 21:30:15,970 WARN L859 $PredicateComparison]: unable to prove that (exists ((|zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| Int) (v_ArrVal_5275 Int)) (and (= (store |c_old(#length)| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| v_ArrVal_5275) |c_#length|) (= (select |c_old(#valid)| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base|) 0))) is different from true [2022-12-13 21:30:16,271 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:30:16,277 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-12-13 21:30:16,319 INFO L321 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2022-12-13 21:30:16,319 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 18 [2022-12-13 21:30:17,537 INFO L134 CoverageAnalysis]: Checked inductivity of 1551 backedges. 619 proven. 428 refuted. 0 times theorem prover too weak. 282 trivial. 222 not checked. [2022-12-13 21:30:17,537 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 21:30:22,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:30:22,081 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2012000823] [2022-12-13 21:30:22,081 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 21:30:22,081 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1339401249] [2022-12-13 21:30:22,081 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1339401249] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 21:30:22,081 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-12-13 21:30:22,081 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2022-12-13 21:30:22,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141550827] [2022-12-13 21:30:22,081 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-12-13 21:30:22,082 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-12-13 21:30:22,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:30:22,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-12-13 21:30:22,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=966, Unknown=5, NotChecked=62, Total=1122 [2022-12-13 21:30:22,083 INFO L87 Difference]: Start difference. First operand 197 states and 212 transitions. Second operand has 32 states, 31 states have (on average 2.4193548387096775) internal successors, (75), 30 states have internal predecessors, (75), 3 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2022-12-13 21:30:24,121 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-12-13 21:30:26,136 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-12-13 21:30:30,276 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-12-13 21:30:32,572 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-12-13 21:30:34,715 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-12-13 21:30:36,867 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-12-13 21:30:39,010 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-12-13 21:30:43,161 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-12-13 21:30:45,304 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-12-13 21:30:47,457 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-12-13 21:31:06,052 WARN L233 SmtUtils]: Spent 10.19s on a formula simplification. DAG size of input: 57 DAG size of output: 50 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 21:31:20,088 WARN L233 SmtUtils]: Spent 12.98s on a formula simplification. DAG size of input: 66 DAG size of output: 59 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 21:31:39,975 WARN L233 SmtUtils]: Spent 19.03s on a formula simplification. DAG size of input: 75 DAG size of output: 68 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 21:31:43,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:31:43,524 INFO L93 Difference]: Finished difference Result 233 states and 252 transitions. [2022-12-13 21:31:43,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-12-13 21:31:43,525 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 2.4193548387096775) internal successors, (75), 30 states have internal predecessors, (75), 3 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) Word has length 131 [2022-12-13 21:31:43,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:31:43,525 INFO L225 Difference]: With dead ends: 233 [2022-12-13 21:31:43,525 INFO L226 Difference]: Without dead ends: 233 [2022-12-13 21:31:43,526 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 110 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 329 ImplicationChecksByTransitivity, 70.4s TimeCoverageRelationStatistics Valid=211, Invalid=1856, Unknown=7, NotChecked=88, Total=2162 [2022-12-13 21:31:43,526 INFO L413 NwaCegarLoop]: 123 mSDtfsCounter, 234 mSDsluCounter, 2221 mSDsCounter, 0 mSdLazyCounter, 2259 mSolverCounterSat, 10 mSolverCounterUnsat, 10 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 234 SdHoareTripleChecker+Valid, 2344 SdHoareTripleChecker+Invalid, 2473 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 2259 IncrementalHoareTripleChecker+Invalid, 10 IncrementalHoareTripleChecker+Unknown, 194 IncrementalHoareTripleChecker+Unchecked, 24.4s IncrementalHoareTripleChecker+Time [2022-12-13 21:31:43,526 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [234 Valid, 2344 Invalid, 2473 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 2259 Invalid, 10 Unknown, 194 Unchecked, 24.4s Time] [2022-12-13 21:31:43,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2022-12-13 21:31:43,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 196. [2022-12-13 21:31:43,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 131 states have (on average 1.5190839694656488) internal successors, (199), 187 states have internal predecessors, (199), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-12-13 21:31:43,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 211 transitions. [2022-12-13 21:31:43,530 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 211 transitions. Word has length 131 [2022-12-13 21:31:43,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:31:43,530 INFO L495 AbstractCegarLoop]: Abstraction has 196 states and 211 transitions. [2022-12-13 21:31:43,530 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 2.4193548387096775) internal successors, (75), 30 states have internal predecessors, (75), 3 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2022-12-13 21:31:43,530 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 211 transitions. [2022-12-13 21:31:43,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2022-12-13 21:31:43,531 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:31:43,531 INFO L195 NwaCegarLoop]: trace histogram [48, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:31:43,554 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9656362c-97b5-4c04-809d-86c8c00f5bc2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2022-12-13 21:31:43,731 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9656362c-97b5-4c04-809d-86c8c00f5bc2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 21:31:43,732 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 72 more)] === [2022-12-13 21:31:43,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:31:43,733 INFO L85 PathProgramCache]: Analyzing trace with hash 2101133601, now seen corresponding path program 1 times [2022-12-13 21:31:43,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:31:43,734 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1621300164] [2022-12-13 21:31:43,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:31:43,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:31:43,811 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 21:31:43,811 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [343243102] [2022-12-13 21:31:43,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:31:43,811 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 21:31:43,811 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9656362c-97b5-4c04-809d-86c8c00f5bc2/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:31:43,812 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9656362c-97b5-4c04-809d-86c8c00f5bc2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 21:31:43,813 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9656362c-97b5-4c04-809d-86c8c00f5bc2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-12-13 21:31:44,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:31:44,121 INFO L263 TraceCheckSpWp]: Trace formula consists of 1362 conjuncts, 81 conjunts are in the unsatisfiable core [2022-12-13 21:31:44,125 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:31:44,318 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-13 21:31:44,319 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-12-13 21:31:44,496 INFO L321 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2022-12-13 21:31:44,497 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 22 treesize of output 33 [2022-12-13 21:31:44,539 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_5941 Int)) (= |c_#valid| (store |c_old(#valid)| |c_zalloc_or_die_calloc_model_~ptr~0#1.base| v_ArrVal_5941))) is different from true [2022-12-13 21:31:44,551 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_5941 Int)) (= |c_#valid| (store |c_old(#valid)| |c_zalloc_or_die_calloc_model_#res#1.base| v_ArrVal_5941))) is different from true [2022-12-13 21:31:44,553 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_5941 Int)) (= |c_#valid| (store |c_old(#valid)| |c_zalloc_or_die_~ptr~1#1.base| v_ArrVal_5941))) is different from true [2022-12-13 21:31:44,555 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_5941 Int)) (= |c_#valid| (store |c_old(#valid)| |c_zalloc_or_die_#res#1.base| v_ArrVal_5941))) is different from true [2022-12-13 21:31:44,571 INFO L321 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2022-12-13 21:31:44,571 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 30 [2022-12-13 21:31:44,640 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_5942 Int)) (= |c_#valid| (store |c_old(#valid)| |c_zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| v_ArrVal_5942))) is different from true [2022-12-13 21:31:44,753 INFO L321 Elim1Store]: treesize reduction 20, result has 57.4 percent of original size [2022-12-13 21:31:44,753 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 3 case distinctions, treesize of input 31 treesize of output 52 [2022-12-13 21:31:44,952 INFO L134 CoverageAnalysis]: Checked inductivity of 1551 backedges. 536 proven. 437 refuted. 0 times theorem prover too weak. 223 trivial. 355 not checked. [2022-12-13 21:31:44,952 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 21:31:45,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:31:45,040 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1621300164] [2022-12-13 21:31:45,040 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 21:31:45,040 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [343243102] [2022-12-13 21:31:45,040 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [343243102] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 21:31:45,040 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-12-13 21:31:45,040 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2022-12-13 21:31:45,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752994995] [2022-12-13 21:31:45,040 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-12-13 21:31:45,040 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-12-13 21:31:45,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:31:45,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-12-13 21:31:45,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=720, Unknown=5, NotChecked=290, Total=1122 [2022-12-13 21:31:45,041 INFO L87 Difference]: Start difference. First operand 196 states and 211 transitions. Second operand has 32 states, 30 states have (on average 2.7666666666666666) internal successors, (83), 27 states have internal predecessors, (83), 4 states have call successors, (6), 2 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) [2022-12-13 21:31:46,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:31:46,473 INFO L93 Difference]: Finished difference Result 227 states and 245 transitions. [2022-12-13 21:31:46,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-12-13 21:31:46,473 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 30 states have (on average 2.7666666666666666) internal successors, (83), 27 states have internal predecessors, (83), 4 states have call successors, (6), 2 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) Word has length 137 [2022-12-13 21:31:46,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:31:46,474 INFO L225 Difference]: With dead ends: 227 [2022-12-13 21:31:46,474 INFO L226 Difference]: Without dead ends: 227 [2022-12-13 21:31:46,474 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 122 SyntacticMatches, 3 SemanticMatches, 43 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 302 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=231, Invalid=1344, Unknown=5, NotChecked=400, Total=1980 [2022-12-13 21:31:46,475 INFO L413 NwaCegarLoop]: 135 mSDtfsCounter, 428 mSDsluCounter, 1701 mSDsCounter, 0 mSdLazyCounter, 1459 mSolverCounterSat, 46 mSolverCounterUnsat, 30 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 428 SdHoareTripleChecker+Valid, 1836 SdHoareTripleChecker+Invalid, 2496 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 1459 IncrementalHoareTripleChecker+Invalid, 30 IncrementalHoareTripleChecker+Unknown, 961 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-12-13 21:31:46,475 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [428 Valid, 1836 Invalid, 2496 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 1459 Invalid, 30 Unknown, 961 Unchecked, 1.2s Time] [2022-12-13 21:31:46,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2022-12-13 21:31:46,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 193. [2022-12-13 21:31:46,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193 states, 131 states have (on average 1.4961832061068703) internal successors, (196), 184 states have internal predecessors, (196), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-12-13 21:31:46,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 208 transitions. [2022-12-13 21:31:46,478 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 208 transitions. Word has length 137 [2022-12-13 21:31:46,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:31:46,478 INFO L495 AbstractCegarLoop]: Abstraction has 193 states and 208 transitions. [2022-12-13 21:31:46,478 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 30 states have (on average 2.7666666666666666) internal successors, (83), 27 states have internal predecessors, (83), 4 states have call successors, (6), 2 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) [2022-12-13 21:31:46,479 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 208 transitions. [2022-12-13 21:31:46,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2022-12-13 21:31:46,479 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:31:46,479 INFO L195 NwaCegarLoop]: trace histogram [48, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:31:46,486 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9656362c-97b5-4c04-809d-86c8c00f5bc2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2022-12-13 21:31:46,680 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9656362c-97b5-4c04-809d-86c8c00f5bc2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-12-13 21:31:46,681 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 72 more)] === [2022-12-13 21:31:46,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:31:46,682 INFO L85 PathProgramCache]: Analyzing trace with hash 2101133602, now seen corresponding path program 1 times [2022-12-13 21:31:46,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:31:46,682 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1528289874] [2022-12-13 21:31:46,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:31:46,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:31:46,783 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 21:31:46,783 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1362417458] [2022-12-13 21:31:46,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:31:46,784 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 21:31:46,784 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9656362c-97b5-4c04-809d-86c8c00f5bc2/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:31:46,785 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9656362c-97b5-4c04-809d-86c8c00f5bc2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 21:31:46,785 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9656362c-97b5-4c04-809d-86c8c00f5bc2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-12-13 21:31:48,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:31:48,940 INFO L263 TraceCheckSpWp]: Trace formula consists of 1362 conjuncts, 140 conjunts are in the unsatisfiable core [2022-12-13 21:31:48,944 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:31:48,961 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 21:31:55,710 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-13 21:31:55,710 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-12-13 21:31:55,794 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-12-13 21:31:58,470 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-12-13 21:31:58,471 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 16 treesize of output 22 [2022-12-13 21:31:58,634 INFO L321 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2022-12-13 21:31:58,634 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 22 treesize of output 33 [2022-12-13 21:32:02,076 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-12-13 21:32:02,077 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 16 treesize of output 22 [2022-12-13 21:32:02,240 INFO L321 Elim1Store]: treesize reduction 12, result has 52.0 percent of original size [2022-12-13 21:32:02,240 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 21 treesize of output 25 [2022-12-13 21:32:03,950 WARN L859 $PredicateComparison]: unable to prove that (exists ((|zalloc_or_die_calloc_model_~size#1| Int) (v_ArrVal_6612 Int) (|zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| Int) (|zalloc_or_die_calloc_model_~nmemb#1| Int)) (let ((.cse0 (* |zalloc_or_die_calloc_model_~nmemb#1| |zalloc_or_die_calloc_model_~size#1|))) (and (<= (mod .cse0 4294967296) v_ArrVal_6612) (= |c_zalloc_or_die_#Ultimate.C_memset_#amount#1| .cse0) (= (store |c_old(#length)| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| v_ArrVal_6612) |c_#length|)))) is different from true [2022-12-13 21:32:05,313 WARN L859 $PredicateComparison]: unable to prove that (exists ((|zalloc_or_die_calloc_model_~size#1| Int) (v_ArrVal_6612 Int) (|zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| Int) (|zalloc_or_die_calloc_model_~nmemb#1| Int)) (let ((.cse0 (mod (* |zalloc_or_die_calloc_model_~nmemb#1| |zalloc_or_die_calloc_model_~size#1|) 4294967296))) (and (<= .cse0 v_ArrVal_6612) (< 3 .cse0) (= (store |c_old(#length)| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| v_ArrVal_6612) |c_#length|)))) is different from true [2022-12-13 21:32:06,399 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-12-13 21:32:06,399 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 16 treesize of output 22 [2022-12-13 21:32:08,464 INFO L134 CoverageAnalysis]: Checked inductivity of 1551 backedges. 319 proven. 754 refuted. 0 times theorem prover too weak. 235 trivial. 243 not checked. [2022-12-13 21:32:08,464 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 21:32:13,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:32:13,228 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1528289874] [2022-12-13 21:32:13,228 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 21:32:13,228 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1362417458] [2022-12-13 21:32:13,229 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1362417458] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 21:32:13,229 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-12-13 21:32:13,229 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41] total 41 [2022-12-13 21:32:13,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362888835] [2022-12-13 21:32:13,229 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-12-13 21:32:13,229 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2022-12-13 21:32:13,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:32:13,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2022-12-13 21:32:13,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=1583, Unknown=11, NotChecked=162, Total=1892 [2022-12-13 21:32:13,230 INFO L87 Difference]: Start difference. First operand 193 states and 208 transitions. Second operand has 42 states, 39 states have (on average 2.1794871794871793) internal successors, (85), 36 states have internal predecessors, (85), 5 states have call successors, (6), 3 states have call predecessors, (6), 5 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2022-12-13 21:32:15,271 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-12-13 21:32:17,310 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-12-13 21:32:21,416 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-12-13 21:32:25,712 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-12-13 21:32:29,936 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-12-13 21:32:34,135 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-12-13 21:33:05,876 WARN L233 SmtUtils]: Spent 8.44s on a formula simplification. DAG size of input: 96 DAG size of output: 57 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 21:33:28,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:33:28,181 INFO L93 Difference]: Finished difference Result 227 states and 246 transitions. [2022-12-13 21:33:28,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-12-13 21:33:28,181 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 39 states have (on average 2.1794871794871793) internal successors, (85), 36 states have internal predecessors, (85), 5 states have call successors, (6), 3 states have call predecessors, (6), 5 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) Word has length 137 [2022-12-13 21:33:28,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:33:28,183 INFO L225 Difference]: With dead ends: 227 [2022-12-13 21:33:28,183 INFO L226 Difference]: Without dead ends: 227 [2022-12-13 21:33:28,184 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 112 SyntacticMatches, 2 SemanticMatches, 61 ConstructedPredicates, 2 IntricatePredicates, 1 DeprecatedPredicates, 645 ImplicationChecksByTransitivity, 74.4s TimeCoverageRelationStatistics Valid=362, Invalid=3287, Unknown=19, NotChecked=238, Total=3906 [2022-12-13 21:33:28,184 INFO L413 NwaCegarLoop]: 113 mSDtfsCounter, 412 mSDsluCounter, 2610 mSDsCounter, 0 mSdLazyCounter, 2960 mSolverCounterSat, 28 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 412 SdHoareTripleChecker+Valid, 2723 SdHoareTripleChecker+Invalid, 3425 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 2960 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 431 IncrementalHoareTripleChecker+Unchecked, 18.5s IncrementalHoareTripleChecker+Time [2022-12-13 21:33:28,184 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [412 Valid, 2723 Invalid, 3425 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 2960 Invalid, 6 Unknown, 431 Unchecked, 18.5s Time] [2022-12-13 21:33:28,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2022-12-13 21:33:28,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 191. [2022-12-13 21:33:28,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 131 states have (on average 1.4809160305343512) internal successors, (194), 182 states have internal predecessors, (194), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-12-13 21:33:28,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 206 transitions. [2022-12-13 21:33:28,190 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 206 transitions. Word has length 137 [2022-12-13 21:33:28,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:33:28,190 INFO L495 AbstractCegarLoop]: Abstraction has 191 states and 206 transitions. [2022-12-13 21:33:28,190 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 39 states have (on average 2.1794871794871793) internal successors, (85), 36 states have internal predecessors, (85), 5 states have call successors, (6), 3 states have call predecessors, (6), 5 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2022-12-13 21:33:28,190 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 206 transitions. [2022-12-13 21:33:28,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2022-12-13 21:33:28,191 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:33:28,191 INFO L195 NwaCegarLoop]: trace histogram [48, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:33:28,217 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9656362c-97b5-4c04-809d-86c8c00f5bc2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2022-12-13 21:33:28,392 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9656362c-97b5-4c04-809d-86c8c00f5bc2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-12-13 21:33:28,393 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 72 more)] === [2022-12-13 21:33:28,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:33:28,394 INFO L85 PathProgramCache]: Analyzing trace with hash 1374404959, now seen corresponding path program 1 times [2022-12-13 21:33:28,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:33:28,395 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1230004166] [2022-12-13 21:33:28,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:33:28,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:33:28,481 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 21:33:28,481 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1949831722] [2022-12-13 21:33:28,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:33:28,481 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 21:33:28,482 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9656362c-97b5-4c04-809d-86c8c00f5bc2/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:33:28,482 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9656362c-97b5-4c04-809d-86c8c00f5bc2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 21:33:28,483 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9656362c-97b5-4c04-809d-86c8c00f5bc2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-12-13 21:33:28,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:33:28,868 INFO L263 TraceCheckSpWp]: Trace formula consists of 1408 conjuncts, 98 conjunts are in the unsatisfiable core [2022-12-13 21:33:28,872 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:33:29,047 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-13 21:33:29,047 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-12-13 21:33:29,277 INFO L321 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2022-12-13 21:33:29,277 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 22 treesize of output 33 [2022-12-13 21:33:29,542 INFO L321 Elim1Store]: treesize reduction 54, result has 34.1 percent of original size [2022-12-13 21:33:29,542 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 27 treesize of output 45 [2022-12-13 21:33:29,902 INFO L321 Elim1Store]: treesize reduction 72, result has 33.9 percent of original size [2022-12-13 21:33:29,902 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 8 case distinctions, treesize of input 32 treesize of output 57 [2022-12-13 21:33:30,010 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_7304 Int)) (= |c_#valid| (store |c_old(#valid)| |c_zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| v_ArrVal_7304))) is different from true [2022-12-13 21:33:30,150 INFO L321 Elim1Store]: treesize reduction 56, result has 27.3 percent of original size [2022-12-13 21:33:30,150 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 27 treesize of output 38 [2022-12-13 21:33:30,704 INFO L134 CoverageAnalysis]: Checked inductivity of 1551 backedges. 357 proven. 875 refuted. 0 times theorem prover too weak. 314 trivial. 5 not checked. [2022-12-13 21:33:30,704 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 21:33:30,953 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:33:30,953 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1230004166] [2022-12-13 21:33:30,953 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 21:33:30,953 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1949831722] [2022-12-13 21:33:30,953 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1949831722] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 21:33:30,953 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-12-13 21:33:30,953 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2022-12-13 21:33:30,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863405519] [2022-12-13 21:33:30,953 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-12-13 21:33:30,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-12-13 21:33:30,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:33:30,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-12-13 21:33:30,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=978, Unknown=1, NotChecked=64, Total=1190 [2022-12-13 21:33:30,954 INFO L87 Difference]: Start difference. First operand 191 states and 206 transitions. Second operand has 32 states, 29 states have (on average 2.793103448275862) internal successors, (81), 27 states have internal predecessors, (81), 5 states have call successors, (6), 2 states have call predecessors, (6), 5 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2022-12-13 21:33:34,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:33:34,119 INFO L93 Difference]: Finished difference Result 229 states and 249 transitions. [2022-12-13 21:33:34,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-12-13 21:33:34,120 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 29 states have (on average 2.793103448275862) internal successors, (81), 27 states have internal predecessors, (81), 5 states have call successors, (6), 2 states have call predecessors, (6), 5 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) Word has length 144 [2022-12-13 21:33:34,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:33:34,121 INFO L225 Difference]: With dead ends: 229 [2022-12-13 21:33:34,121 INFO L226 Difference]: Without dead ends: 229 [2022-12-13 21:33:34,121 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 151 SyntacticMatches, 5 SemanticMatches, 52 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 546 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=392, Invalid=2367, Unknown=1, NotChecked=102, Total=2862 [2022-12-13 21:33:34,122 INFO L413 NwaCegarLoop]: 131 mSDtfsCounter, 474 mSDsluCounter, 1983 mSDsCounter, 0 mSdLazyCounter, 1894 mSolverCounterSat, 56 mSolverCounterUnsat, 35 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 474 SdHoareTripleChecker+Valid, 2114 SdHoareTripleChecker+Invalid, 2201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 1894 IncrementalHoareTripleChecker+Invalid, 35 IncrementalHoareTripleChecker+Unknown, 216 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-12-13 21:33:34,122 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [474 Valid, 2114 Invalid, 2201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 1894 Invalid, 35 Unknown, 216 Unchecked, 2.2s Time] [2022-12-13 21:33:34,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2022-12-13 21:33:34,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 188. [2022-12-13 21:33:34,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 131 states have (on average 1.4580152671755726) internal successors, (191), 179 states have internal predecessors, (191), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-12-13 21:33:34,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 203 transitions. [2022-12-13 21:33:34,125 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 203 transitions. Word has length 144 [2022-12-13 21:33:34,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:33:34,125 INFO L495 AbstractCegarLoop]: Abstraction has 188 states and 203 transitions. [2022-12-13 21:33:34,125 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 29 states have (on average 2.793103448275862) internal successors, (81), 27 states have internal predecessors, (81), 5 states have call successors, (6), 2 states have call predecessors, (6), 5 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2022-12-13 21:33:34,126 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 203 transitions. [2022-12-13 21:33:34,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2022-12-13 21:33:34,126 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:33:34,126 INFO L195 NwaCegarLoop]: trace histogram [48, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:33:34,133 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9656362c-97b5-4c04-809d-86c8c00f5bc2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2022-12-13 21:33:34,326 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9656362c-97b5-4c04-809d-86c8c00f5bc2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-12-13 21:33:34,327 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 72 more)] === [2022-12-13 21:33:34,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:33:34,327 INFO L85 PathProgramCache]: Analyzing trace with hash 1374404960, now seen corresponding path program 1 times [2022-12-13 21:33:34,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:33:34,327 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [638256156] [2022-12-13 21:33:34,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:33:34,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:33:34,357 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 21:33:34,357 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [227034158] [2022-12-13 21:33:34,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:33:34,358 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 21:33:34,358 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9656362c-97b5-4c04-809d-86c8c00f5bc2/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:33:34,358 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9656362c-97b5-4c04-809d-86c8c00f5bc2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 21:33:34,359 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9656362c-97b5-4c04-809d-86c8c00f5bc2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-12-13 21:33:34,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:33:34,984 INFO L263 TraceCheckSpWp]: Trace formula consists of 1408 conjuncts, 178 conjunts are in the unsatisfiable core [2022-12-13 21:33:34,990 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:33:34,997 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 21:33:46,300 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-13 21:33:46,300 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-12-13 21:33:46,331 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-12-13 21:33:49,307 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-12-13 21:33:49,307 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 16 treesize of output 22 [2022-12-13 21:33:49,480 INFO L321 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2022-12-13 21:33:49,480 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 22 treesize of output 33 [2022-12-13 21:33:53,230 INFO L321 Elim1Store]: treesize reduction 42, result has 27.6 percent of original size [2022-12-13 21:33:53,230 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 22 treesize of output 30 [2022-12-13 21:33:53,326 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-12-13 21:33:53,327 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 16 treesize of output 22 [2022-12-13 21:33:55,718 INFO L321 Elim1Store]: treesize reduction 80, result has 20.8 percent of original size [2022-12-13 21:33:55,718 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 27 treesize of output 38 [2022-12-13 21:33:55,765 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-12-13 21:33:55,765 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 28 treesize of output 34 [2022-12-13 21:34:00,430 WARN L859 $PredicateComparison]: unable to prove that (exists ((|zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| Int) (v_ArrVal_8004 Int)) (and (= |c_#length| (store |c_old(#length)| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| v_ArrVal_8004)) (= (select |c_old(#valid)| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base|) 0))) is different from true [2022-12-13 21:34:00,494 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:34:00,495 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 33 [2022-12-13 21:34:00,556 INFO L321 Elim1Store]: treesize reduction 76, result has 21.6 percent of original size [2022-12-13 21:34:00,556 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 12 case distinctions, treesize of input 31 treesize of output 39 [2022-12-13 21:34:02,403 INFO L134 CoverageAnalysis]: Checked inductivity of 1551 backedges. 5 proven. 740 refuted. 0 times theorem prover too weak. 366 trivial. 440 not checked. [2022-12-13 21:34:02,403 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 21:34:03,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:34:03,510 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [638256156] [2022-12-13 21:34:03,510 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 21:34:03,510 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [227034158] [2022-12-13 21:34:03,510 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [227034158] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 21:34:03,510 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-12-13 21:34:03,510 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42] total 42 [2022-12-13 21:34:03,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929394022] [2022-12-13 21:34:03,510 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-12-13 21:34:03,510 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2022-12-13 21:34:03,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:34:03,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2022-12-13 21:34:03,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=154, Invalid=1901, Unknown=19, NotChecked=88, Total=2162 [2022-12-13 21:34:03,511 INFO L87 Difference]: Start difference. First operand 188 states and 203 transitions. Second operand has 43 states, 39 states have (on average 2.0256410256410255) internal successors, (79), 36 states have internal predecessors, (79), 6 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-12-13 21:34:05,570 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-12-13 21:34:07,606 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-12-13 21:34:11,759 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-12-13 21:34:13,811 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-12-13 21:34:16,021 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-12-13 21:34:18,232 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-12-13 21:34:20,462 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-12-13 21:34:22,669 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-12-13 21:34:24,933 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-12-13 21:34:29,195 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-12-13 21:34:31,391 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-12-13 21:34:44,879 WARN L233 SmtUtils]: Spent 6.13s on a formula simplification. DAG size of input: 77 DAG size of output: 42 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 21:34:55,142 WARN L233 SmtUtils]: Spent 8.82s on a formula simplification. DAG size of input: 100 DAG size of output: 51 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 21:35:05,036 WARN L233 SmtUtils]: Spent 8.39s on a formula simplification. DAG size of input: 124 DAG size of output: 58 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 21:35:35,461 WARN L233 SmtUtils]: Spent 6.89s on a formula simplification. DAG size of input: 72 DAG size of output: 60 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 21:35:49,390 WARN L233 SmtUtils]: Spent 5.90s on a formula simplification. DAG size of input: 66 DAG size of output: 55 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 21:36:04,369 WARN L233 SmtUtils]: Spent 9.49s on a formula simplification. DAG size of input: 71 DAG size of output: 60 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 21:36:11,319 WARN L233 SmtUtils]: Spent 5.09s on a formula simplification. DAG size of input: 71 DAG size of output: 60 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 21:36:11,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:36:11,479 INFO L93 Difference]: Finished difference Result 221 states and 239 transitions. [2022-12-13 21:36:11,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-12-13 21:36:11,480 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 39 states have (on average 2.0256410256410255) internal successors, (79), 36 states have internal predecessors, (79), 6 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Word has length 144 [2022-12-13 21:36:11,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:36:11,481 INFO L225 Difference]: With dead ends: 221 [2022-12-13 21:36:11,481 INFO L226 Difference]: Without dead ends: 221 [2022-12-13 21:36:11,482 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 122 SyntacticMatches, 2 SemanticMatches, 73 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 948 ImplicationChecksByTransitivity, 124.0s TimeCoverageRelationStatistics Valid=549, Invalid=4836, Unknown=21, NotChecked=144, Total=5550 [2022-12-13 21:36:11,483 INFO L413 NwaCegarLoop]: 108 mSDtfsCounter, 907 mSDsluCounter, 2319 mSDsCounter, 0 mSdLazyCounter, 3358 mSolverCounterSat, 53 mSolverCounterUnsat, 11 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 28.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 907 SdHoareTripleChecker+Valid, 2427 SdHoareTripleChecker+Invalid, 3596 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 3358 IncrementalHoareTripleChecker+Invalid, 11 IncrementalHoareTripleChecker+Unknown, 174 IncrementalHoareTripleChecker+Unchecked, 29.2s IncrementalHoareTripleChecker+Time [2022-12-13 21:36:11,483 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [907 Valid, 2427 Invalid, 3596 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 3358 Invalid, 11 Unknown, 174 Unchecked, 29.2s Time] [2022-12-13 21:36:11,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2022-12-13 21:36:11,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 185. [2022-12-13 21:36:11,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 131 states have (on average 1.4351145038167938) internal successors, (188), 176 states have internal predecessors, (188), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-12-13 21:36:11,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 200 transitions. [2022-12-13 21:36:11,488 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 200 transitions. Word has length 144 [2022-12-13 21:36:11,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:36:11,488 INFO L495 AbstractCegarLoop]: Abstraction has 185 states and 200 transitions. [2022-12-13 21:36:11,488 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 39 states have (on average 2.0256410256410255) internal successors, (79), 36 states have internal predecessors, (79), 6 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-12-13 21:36:11,488 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 200 transitions. [2022-12-13 21:36:11,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-12-13 21:36:11,489 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:36:11,489 INFO L195 NwaCegarLoop]: trace histogram [48, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:36:11,499 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9656362c-97b5-4c04-809d-86c8c00f5bc2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-12-13 21:36:11,690 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9656362c-97b5-4c04-809d-86c8c00f5bc2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-12-13 21:36:11,691 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 72 more)] === [2022-12-13 21:36:11,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:36:11,692 INFO L85 PathProgramCache]: Analyzing trace with hash -343119153, now seen corresponding path program 1 times [2022-12-13 21:36:11,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:36:11,693 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1535661192] [2022-12-13 21:36:11,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:36:11,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:36:11,773 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 21:36:11,773 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1443137237] [2022-12-13 21:36:11,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:36:11,773 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 21:36:11,773 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9656362c-97b5-4c04-809d-86c8c00f5bc2/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:36:11,774 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9656362c-97b5-4c04-809d-86c8c00f5bc2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 21:36:11,775 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9656362c-97b5-4c04-809d-86c8c00f5bc2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-12-13 21:36:12,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:36:12,265 INFO L263 TraceCheckSpWp]: Trace formula consists of 1416 conjuncts, 156 conjunts are in the unsatisfiable core [2022-12-13 21:36:12,269 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:36:12,303 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 21:36:25,337 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-13 21:36:25,337 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-12-13 21:36:25,438 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-12-13 21:36:27,530 INFO L321 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2022-12-13 21:36:27,530 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 22 treesize of output 33 [2022-12-13 21:36:27,587 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-12-13 21:36:31,779 INFO L321 Elim1Store]: treesize reduction 42, result has 27.6 percent of original size [2022-12-13 21:36:31,780 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 22 treesize of output 30 [2022-12-13 21:36:31,891 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-12-13 21:36:31,891 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 16 treesize of output 22 [2022-12-13 21:36:34,076 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_8699 Int) (|zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| Int)) (and (= (store |c_old(#length)| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| v_ArrVal_8699) |c_#length|) (= (select |c_old(#valid)| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base|) 0))) is different from true [2022-12-13 21:36:34,142 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:36:34,143 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 30 [2022-12-13 21:36:34,239 INFO L321 Elim1Store]: treesize reduction 40, result has 29.8 percent of original size [2022-12-13 21:36:34,239 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 7 case distinctions, treesize of input 26 treesize of output 32 [2022-12-13 21:36:35,428 INFO L134 CoverageAnalysis]: Checked inductivity of 1551 backedges. 140 proven. 756 refuted. 0 times theorem prover too weak. 240 trivial. 415 not checked. [2022-12-13 21:36:35,428 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 21:36:36,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:36:36,363 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1535661192] [2022-12-13 21:36:36,363 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 21:36:36,363 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1443137237] [2022-12-13 21:36:36,363 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1443137237] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 21:36:36,363 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-12-13 21:36:36,363 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [45] total 45 [2022-12-13 21:36:36,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931756551] [2022-12-13 21:36:36,363 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-12-13 21:36:36,364 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-12-13 21:36:36,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:36:36,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-12-13 21:36:36,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=2090, Unknown=18, NotChecked=92, Total=2352 [2022-12-13 21:36:36,364 INFO L87 Difference]: Start difference. First operand 185 states and 200 transitions. Second operand has 46 states, 43 states have (on average 2.2325581395348837) internal successors, (96), 40 states have internal predecessors, (96), 5 states have call successors, (6), 2 states have call predecessors, (6), 5 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2022-12-13 21:36:38,445 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-12-13 21:36:40,451 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-12-13 21:36:42,580 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-12-13 21:36:44,615 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-12-13 21:36:48,868 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-12-13 21:36:51,065 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-12-13 21:36:53,290 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-12-13 21:36:55,472 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-12-13 21:36:57,829 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-12-13 21:37:00,003 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-12-13 21:37:02,182 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-12-13 21:37:24,886 WARN L233 SmtUtils]: Spent 8.49s on a formula simplification. DAG size of input: 100 DAG size of output: 51 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 21:37:35,566 WARN L233 SmtUtils]: Spent 8.83s on a formula simplification. DAG size of input: 124 DAG size of output: 58 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 21:37:46,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:37:46,004 INFO L93 Difference]: Finished difference Result 220 states and 238 transitions. [2022-12-13 21:37:46,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-12-13 21:37:46,004 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 43 states have (on average 2.2325581395348837) internal successors, (96), 40 states have internal predecessors, (96), 5 states have call successors, (6), 2 states have call predecessors, (6), 5 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) Word has length 145 [2022-12-13 21:37:46,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:37:46,005 INFO L225 Difference]: With dead ends: 220 [2022-12-13 21:37:46,005 INFO L226 Difference]: Without dead ends: 220 [2022-12-13 21:37:46,006 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 124 SyntacticMatches, 1 SemanticMatches, 66 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 726 ImplicationChecksByTransitivity, 62.7s TimeCoverageRelationStatistics Valid=384, Invalid=4022, Unknown=20, NotChecked=130, Total=4556 [2022-12-13 21:37:46,006 INFO L413 NwaCegarLoop]: 113 mSDtfsCounter, 428 mSDsluCounter, 2991 mSDsCounter, 0 mSdLazyCounter, 3390 mSolverCounterSat, 15 mSolverCounterUnsat, 11 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 28.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 428 SdHoareTripleChecker+Valid, 3104 SdHoareTripleChecker+Invalid, 3620 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 3390 IncrementalHoareTripleChecker+Invalid, 11 IncrementalHoareTripleChecker+Unknown, 204 IncrementalHoareTripleChecker+Unchecked, 28.6s IncrementalHoareTripleChecker+Time [2022-12-13 21:37:46,006 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [428 Valid, 3104 Invalid, 3620 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 3390 Invalid, 11 Unknown, 204 Unchecked, 28.6s Time] [2022-12-13 21:37:46,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2022-12-13 21:37:46,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 184. [2022-12-13 21:37:46,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 131 states have (on average 1.4274809160305344) internal successors, (187), 175 states have internal predecessors, (187), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-12-13 21:37:46,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 199 transitions. [2022-12-13 21:37:46,009 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 199 transitions. Word has length 145 [2022-12-13 21:37:46,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:37:46,009 INFO L495 AbstractCegarLoop]: Abstraction has 184 states and 199 transitions. [2022-12-13 21:37:46,010 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 43 states have (on average 2.2325581395348837) internal successors, (96), 40 states have internal predecessors, (96), 5 states have call successors, (6), 2 states have call predecessors, (6), 5 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2022-12-13 21:37:46,010 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 199 transitions. [2022-12-13 21:37:46,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2022-12-13 21:37:46,010 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:37:46,010 INFO L195 NwaCegarLoop]: trace histogram [48, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:37:46,018 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9656362c-97b5-4c04-809d-86c8c00f5bc2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2022-12-13 21:37:46,211 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9656362c-97b5-4c04-809d-86c8c00f5bc2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 21:37:46,212 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr27REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 72 more)] === [2022-12-13 21:37:46,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:37:46,213 INFO L85 PathProgramCache]: Analyzing trace with hash -2055622856, now seen corresponding path program 1 times [2022-12-13 21:37:46,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:37:46,214 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1301126598] [2022-12-13 21:37:46,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:37:46,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:37:46,291 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 21:37:46,291 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [925099958] [2022-12-13 21:37:46,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:37:46,291 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 21:37:46,291 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9656362c-97b5-4c04-809d-86c8c00f5bc2/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:37:46,292 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9656362c-97b5-4c04-809d-86c8c00f5bc2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 21:37:46,293 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9656362c-97b5-4c04-809d-86c8c00f5bc2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-12-13 21:37:46,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:37:46,804 INFO L263 TraceCheckSpWp]: Trace formula consists of 1454 conjuncts, 141 conjunts are in the unsatisfiable core [2022-12-13 21:37:46,809 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:37:46,987 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-13 21:37:46,987 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-12-13 21:37:46,992 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 21:37:47,147 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-13 21:37:47,147 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-12-13 21:37:47,153 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 21:37:47,184 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_9415 Int)) (= |c_#valid| (store |c_old(#valid)| |c_zalloc_or_die_calloc_model_~ptr~0#1.base| v_ArrVal_9415))) (exists ((v_ArrVal_9416 Int)) (= |c_#length| (store |c_old(#length)| |c_zalloc_or_die_calloc_model_~ptr~0#1.base| v_ArrVal_9416)))) is different from true [2022-12-13 21:37:47,208 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_9416 Int)) (= (store |c_old(#length)| |c_zalloc_or_die_calloc_model_#res#1.base| v_ArrVal_9416) |c_#length|)) (exists ((v_ArrVal_9415 Int)) (= |c_#valid| (store |c_old(#valid)| |c_zalloc_or_die_calloc_model_#res#1.base| v_ArrVal_9415)))) is different from true [2022-12-13 21:37:47,211 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_9416 Int)) (= |c_#length| (store |c_old(#length)| |c_zalloc_or_die_~ptr~1#1.base| v_ArrVal_9416))) (exists ((v_ArrVal_9415 Int)) (= |c_#valid| (store |c_old(#valid)| |c_zalloc_or_die_~ptr~1#1.base| v_ArrVal_9415)))) is different from true [2022-12-13 21:37:47,215 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_9415 Int)) (= |c_#valid| (store |c_old(#valid)| |c_zalloc_or_die_#res#1.base| v_ArrVal_9415))) (exists ((v_ArrVal_9416 Int)) (= (store |c_old(#length)| |c_zalloc_or_die_#res#1.base| v_ArrVal_9416) |c_#length|))) is different from true [2022-12-13 21:37:47,226 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-12-13 21:37:47,226 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 21:37:47,237 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-12-13 21:37:47,237 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 21:37:47,467 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-12-13 21:37:47,467 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 16 treesize of output 22 [2022-12-13 21:37:47,482 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-12-13 21:37:47,482 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 16 treesize of output 22 [2022-12-13 21:37:47,827 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-12-13 21:37:47,827 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 19 treesize of output 25 [2022-12-13 21:37:47,855 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-12-13 21:37:47,856 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 19 treesize of output 25 [2022-12-13 21:37:48,035 WARN L859 $PredicateComparison]: unable to prove that (exists ((|zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| Int) (v_ArrVal_9421 Int)) (and (= (store |c_old(#length)| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| v_ArrVal_9421) |c_#length|) (= (select |c_old(#valid)| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base|) 0))) is different from true [2022-12-13 21:37:48,099 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-12-13 21:37:48,099 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 22 treesize of output 28 [2022-12-13 21:37:48,119 INFO L321 Elim1Store]: treesize reduction 4, result has 84.0 percent of original size [2022-12-13 21:37:48,119 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 23 treesize of output 37 [2022-12-13 21:37:49,049 INFO L134 CoverageAnalysis]: Checked inductivity of 1551 backedges. 0 proven. 440 refuted. 0 times theorem prover too weak. 319 trivial. 792 not checked. [2022-12-13 21:37:49,049 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 21:37:49,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:37:49,827 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1301126598] [2022-12-13 21:37:49,828 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 21:37:49,828 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [925099958] [2022-12-13 21:37:49,828 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [925099958] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 21:37:49,828 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-12-13 21:37:49,828 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37] total 37 [2022-12-13 21:37:49,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346917718] [2022-12-13 21:37:49,828 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-12-13 21:37:49,829 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-12-13 21:37:49,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:37:49,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-12-13 21:37:49,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=175, Invalid=1480, Unknown=5, NotChecked=410, Total=2070 [2022-12-13 21:37:49,831 INFO L87 Difference]: Start difference. First operand 184 states and 199 transitions. Second operand has 39 states, 36 states have (on average 2.4444444444444446) internal successors, (88), 31 states have internal predecessors, (88), 4 states have call successors, (6), 1 states have call predecessors, (6), 5 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) [2022-12-13 21:37:53,532 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 21:37:55,565 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 21:37:57,854 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 21:38:01,835 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 21:38:03,856 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 21:38:05,866 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 21:38:08,113 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 21:38:10,143 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 21:38:12,188 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 21:38:12,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:38:12,355 INFO L93 Difference]: Finished difference Result 218 states and 239 transitions. [2022-12-13 21:38:12,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-12-13 21:38:12,356 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 36 states have (on average 2.4444444444444446) internal successors, (88), 31 states have internal predecessors, (88), 4 states have call successors, (6), 1 states have call predecessors, (6), 5 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) Word has length 151 [2022-12-13 21:38:12,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:38:12,356 INFO L225 Difference]: With dead ends: 218 [2022-12-13 21:38:12,356 INFO L226 Difference]: Without dead ends: 218 [2022-12-13 21:38:12,357 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 137 SyntacticMatches, 1 SemanticMatches, 68 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 431 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=624, Invalid=3551, Unknown=5, NotChecked=650, Total=4830 [2022-12-13 21:38:12,357 INFO L413 NwaCegarLoop]: 109 mSDtfsCounter, 1248 mSDsluCounter, 1723 mSDsCounter, 0 mSdLazyCounter, 2486 mSolverCounterSat, 80 mSolverCounterUnsat, 9 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1248 SdHoareTripleChecker+Valid, 1832 SdHoareTripleChecker+Invalid, 3477 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 2486 IncrementalHoareTripleChecker+Invalid, 9 IncrementalHoareTripleChecker+Unknown, 902 IncrementalHoareTripleChecker+Unchecked, 20.5s IncrementalHoareTripleChecker+Time [2022-12-13 21:38:12,358 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1248 Valid, 1832 Invalid, 3477 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 2486 Invalid, 9 Unknown, 902 Unchecked, 20.5s Time] [2022-12-13 21:38:12,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2022-12-13 21:38:12,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 178. [2022-12-13 21:38:12,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 131 states have (on average 1.381679389312977) internal successors, (181), 169 states have internal predecessors, (181), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-12-13 21:38:12,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 193 transitions. [2022-12-13 21:38:12,361 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 193 transitions. Word has length 151 [2022-12-13 21:38:12,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:38:12,361 INFO L495 AbstractCegarLoop]: Abstraction has 178 states and 193 transitions. [2022-12-13 21:38:12,361 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 36 states have (on average 2.4444444444444446) internal successors, (88), 31 states have internal predecessors, (88), 4 states have call successors, (6), 1 states have call predecessors, (6), 5 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) [2022-12-13 21:38:12,361 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 193 transitions. [2022-12-13 21:38:12,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2022-12-13 21:38:12,361 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:38:12,362 INFO L195 NwaCegarLoop]: trace histogram [48, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:38:12,369 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9656362c-97b5-4c04-809d-86c8c00f5bc2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-12-13 21:38:12,562 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9656362c-97b5-4c04-809d-86c8c00f5bc2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 21:38:12,563 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr34REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 72 more)] === [2022-12-13 21:38:12,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:38:12,564 INFO L85 PathProgramCache]: Analyzing trace with hash 39740441, now seen corresponding path program 1 times [2022-12-13 21:38:12,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:38:12,565 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [106952110] [2022-12-13 21:38:12,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:38:12,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:38:12,605 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 21:38:12,605 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [846457592] [2022-12-13 21:38:12,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:38:12,606 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 21:38:12,606 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9656362c-97b5-4c04-809d-86c8c00f5bc2/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:38:12,606 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9656362c-97b5-4c04-809d-86c8c00f5bc2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 21:38:12,607 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9656362c-97b5-4c04-809d-86c8c00f5bc2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-12-13 21:38:13,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:38:13,031 INFO L263 TraceCheckSpWp]: Trace formula consists of 1516 conjuncts, 35 conjunts are in the unsatisfiable core [2022-12-13 21:38:13,034 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:38:13,600 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 21:38:13,624 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 21:38:13,638 INFO L134 CoverageAnalysis]: Checked inductivity of 1551 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1551 trivial. 0 not checked. [2022-12-13 21:38:13,638 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 21:38:13,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:38:13,638 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [106952110] [2022-12-13 21:38:13,638 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 21:38:13,638 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [846457592] [2022-12-13 21:38:13,638 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [846457592] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:38:13,638 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:38:13,638 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-13 21:38:13,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830489265] [2022-12-13 21:38:13,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:38:13,639 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 21:38:13,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:38:13,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 21:38:13,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-12-13 21:38:13,639 INFO L87 Difference]: Start difference. First operand 178 states and 193 transitions. Second operand has 8 states, 7 states have (on average 8.714285714285714) internal successors, (61), 7 states have internal predecessors, (61), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-12-13 21:38:13,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:38:13,949 INFO L93 Difference]: Finished difference Result 228 states and 244 transitions. [2022-12-13 21:38:13,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-13 21:38:13,950 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 8.714285714285714) internal successors, (61), 7 states have internal predecessors, (61), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 160 [2022-12-13 21:38:13,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:38:13,951 INFO L225 Difference]: With dead ends: 228 [2022-12-13 21:38:13,951 INFO L226 Difference]: Without dead ends: 228 [2022-12-13 21:38:13,951 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156 [2022-12-13 21:38:13,951 INFO L413 NwaCegarLoop]: 142 mSDtfsCounter, 349 mSDsluCounter, 422 mSDsCounter, 0 mSdLazyCounter, 356 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 349 SdHoareTripleChecker+Valid, 564 SdHoareTripleChecker+Invalid, 361 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 356 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-13 21:38:13,951 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [349 Valid, 564 Invalid, 361 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 356 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-13 21:38:13,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2022-12-13 21:38:13,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 178. [2022-12-13 21:38:13,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 132 states have (on average 1.378787878787879) internal successors, (182), 169 states have internal predecessors, (182), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-12-13 21:38:13,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 194 transitions. [2022-12-13 21:38:13,955 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 194 transitions. Word has length 160 [2022-12-13 21:38:13,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:38:13,955 INFO L495 AbstractCegarLoop]: Abstraction has 178 states and 194 transitions. [2022-12-13 21:38:13,955 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 8.714285714285714) internal successors, (61), 7 states have internal predecessors, (61), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-12-13 21:38:13,955 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 194 transitions. [2022-12-13 21:38:13,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2022-12-13 21:38:13,956 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:38:13,956 INFO L195 NwaCegarLoop]: trace histogram [48, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:38:13,963 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9656362c-97b5-4c04-809d-86c8c00f5bc2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2022-12-13 21:38:14,156 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9656362c-97b5-4c04-809d-86c8c00f5bc2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2022-12-13 21:38:14,158 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr35REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 72 more)] === [2022-12-13 21:38:14,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:38:14,159 INFO L85 PathProgramCache]: Analyzing trace with hash 39740442, now seen corresponding path program 1 times [2022-12-13 21:38:14,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:38:14,160 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [164727371] [2022-12-13 21:38:14,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:38:14,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:38:14,202 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 21:38:14,202 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1512440582] [2022-12-13 21:38:14,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:38:14,203 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 21:38:14,203 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9656362c-97b5-4c04-809d-86c8c00f5bc2/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:38:14,204 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9656362c-97b5-4c04-809d-86c8c00f5bc2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 21:38:14,204 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9656362c-97b5-4c04-809d-86c8c00f5bc2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-12-13 21:38:14,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:38:14,646 INFO L263 TraceCheckSpWp]: Trace formula consists of 1516 conjuncts, 51 conjunts are in the unsatisfiable core [2022-12-13 21:38:14,649 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:38:15,446 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 21:38:15,450 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 21:38:15,493 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 21:38:15,495 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 26 treesize of output 14 [2022-12-13 21:38:15,518 INFO L134 CoverageAnalysis]: Checked inductivity of 1551 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1551 trivial. 0 not checked. [2022-12-13 21:38:15,518 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 21:38:15,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:38:15,519 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [164727371] [2022-12-13 21:38:15,519 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 21:38:15,519 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1512440582] [2022-12-13 21:38:15,519 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1512440582] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:38:15,519 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:38:15,519 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-13 21:38:15,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168423335] [2022-12-13 21:38:15,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:38:15,519 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-13 21:38:15,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:38:15,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-13 21:38:15,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2022-12-13 21:38:15,520 INFO L87 Difference]: Start difference. First operand 178 states and 194 transitions. Second operand has 10 states, 9 states have (on average 6.777777777777778) internal successors, (61), 9 states have internal predecessors, (61), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-12-13 21:38:15,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:38:15,909 INFO L93 Difference]: Finished difference Result 261 states and 282 transitions. [2022-12-13 21:38:15,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-13 21:38:15,909 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 6.777777777777778) internal successors, (61), 9 states have internal predecessors, (61), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 160 [2022-12-13 21:38:15,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:38:15,911 INFO L225 Difference]: With dead ends: 261 [2022-12-13 21:38:15,911 INFO L226 Difference]: Without dead ends: 261 [2022-12-13 21:38:15,911 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=84, Invalid=156, Unknown=0, NotChecked=0, Total=240 [2022-12-13 21:38:15,912 INFO L413 NwaCegarLoop]: 128 mSDtfsCounter, 992 mSDsluCounter, 258 mSDsCounter, 0 mSdLazyCounter, 245 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 992 SdHoareTripleChecker+Valid, 386 SdHoareTripleChecker+Invalid, 248 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 245 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-13 21:38:15,912 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [992 Valid, 386 Invalid, 248 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 245 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-13 21:38:15,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2022-12-13 21:38:15,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 218. [2022-12-13 21:38:15,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218 states, 172 states have (on average 1.494186046511628) internal successors, (257), 209 states have internal predecessors, (257), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-12-13 21:38:15,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 269 transitions. [2022-12-13 21:38:15,915 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 269 transitions. Word has length 160 [2022-12-13 21:38:15,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:38:15,916 INFO L495 AbstractCegarLoop]: Abstraction has 218 states and 269 transitions. [2022-12-13 21:38:15,916 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 6.777777777777778) internal successors, (61), 9 states have internal predecessors, (61), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-12-13 21:38:15,916 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 269 transitions. [2022-12-13 21:38:15,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2022-12-13 21:38:15,917 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:38:15,917 INFO L195 NwaCegarLoop]: trace histogram [48, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:38:15,925 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9656362c-97b5-4c04-809d-86c8c00f5bc2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2022-12-13 21:38:16,117 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9656362c-97b5-4c04-809d-86c8c00f5bc2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 21:38:16,118 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr36REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 72 more)] === [2022-12-13 21:38:16,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:38:16,120 INFO L85 PathProgramCache]: Analyzing trace with hash -464137763, now seen corresponding path program 1 times [2022-12-13 21:38:16,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:38:16,120 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [565053487] [2022-12-13 21:38:16,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:38:16,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:38:16,168 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 21:38:16,168 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1341128485] [2022-12-13 21:38:16,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:38:16,168 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 21:38:16,168 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9656362c-97b5-4c04-809d-86c8c00f5bc2/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:38:16,169 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9656362c-97b5-4c04-809d-86c8c00f5bc2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 21:38:16,170 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9656362c-97b5-4c04-809d-86c8c00f5bc2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-12-13 21:38:16,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:38:16,679 INFO L263 TraceCheckSpWp]: Trace formula consists of 1532 conjuncts, 83 conjunts are in the unsatisfiable core [2022-12-13 21:38:16,684 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:38:16,834 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-12-13 21:38:16,834 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 11 treesize of output 11 [2022-12-13 21:38:17,610 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-13 21:38:17,675 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 23 treesize of output 22 [2022-12-13 21:38:17,706 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 23 treesize of output 22 [2022-12-13 21:38:17,710 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-13 21:38:17,762 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 19 [2022-12-13 21:38:17,817 INFO L321 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2022-12-13 21:38:17,817 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 37 treesize of output 16 [2022-12-13 21:38:17,852 INFO L134 CoverageAnalysis]: Checked inductivity of 1551 backedges. 0 proven. 445 refuted. 0 times theorem prover too weak. 1106 trivial. 0 not checked. [2022-12-13 21:38:17,852 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 21:38:17,921 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 84 treesize of output 80 [2022-12-13 21:38:24,322 WARN L233 SmtUtils]: Spent 6.22s on a formula simplification. DAG size of input: 34 DAG size of output: 30 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 21:38:26,360 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse4 (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_l0_insert_~item~4#1.base|))) (let ((.cse0 (forall ((v_ArrVal_11630 Int) (v_arrayElimCell_146 Int)) (= (select |c_#valid| (select (let ((.cse5 (let ((.cse6 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_l0_insert_~item~4#1.base| (store .cse4 |c_ULTIMATE.start_l0_insert_~item~4#1.offset| v_ArrVal_11630)))) (store .cse6 |c_ULTIMATE.start_l0_insert_~list#1.base| (store (select .cse6 |c_ULTIMATE.start_l0_insert_~list#1.base|) |c_ULTIMATE.start_l0_insert_~list#1.offset| |c_ULTIMATE.start_l0_insert_~item~4#1.base|))))) (select .cse5 (select (select .cse5 |c_~#list~0.base|) |c_~#list~0.offset|))) (+ v_arrayElimCell_146 4))) 1)))) (and (or (= |c_~#list~0.offset| |c_ULTIMATE.start_l0_insert_~list#1.offset|) .cse0) (or (= |c_~#list~0.base| |c_ULTIMATE.start_l0_insert_~list#1.base|) .cse0) (forall ((v_ArrVal_11630 Int) (v_arrayElimCell_146 Int)) (let ((.cse1 (let ((.cse2 (let ((.cse3 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_l0_insert_~item~4#1.base| (store .cse4 |c_ULTIMATE.start_l0_insert_~item~4#1.offset| v_ArrVal_11630)))) (store .cse3 |c_ULTIMATE.start_l0_insert_~list#1.base| (store (select .cse3 |c_ULTIMATE.start_l0_insert_~list#1.base|) |c_ULTIMATE.start_l0_insert_~list#1.offset| |c_ULTIMATE.start_l0_insert_~item~4#1.base|))))) (select .cse2 (select (select .cse2 |c_~#list~0.base|) |c_~#list~0.offset|))))) (or (= (select |c_#valid| (select .cse1 (+ v_arrayElimCell_146 4))) 1) (= (select |c_#valid| (select .cse1 (+ |c_ULTIMATE.start_l0_insert_~item~4#1.offset| 4))) 1))))))) is different from false [2022-12-13 21:38:26,428 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 21:38:26,469 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 21:38:26,470 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 2630 treesize of output 2529 [2022-12-13 21:38:32,445 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 21:38:32,500 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 21:38:32,501 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 2630 treesize of output 2529 [2022-12-13 21:38:37,506 INFO L321 Elim1Store]: treesize reduction 132, result has 63.8 percent of original size [2022-12-13 21:38:37,506 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 10 new quantified variables, introduced 36 case distinctions, treesize of input 10876 treesize of output 10576