./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/memsafety/test-0235-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version e04fb08f Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_126c6f52-b54d-4b84-864f-424dcc68299d/bin/utaipan-Xvt2sAort0/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_126c6f52-b54d-4b84-864f-424dcc68299d/bin/utaipan-Xvt2sAort0/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_126c6f52-b54d-4b84-864f-424dcc68299d/bin/utaipan-Xvt2sAort0/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_126c6f52-b54d-4b84-864f-424dcc68299d/bin/utaipan-Xvt2sAort0/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety/test-0235-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_126c6f52-b54d-4b84-864f-424dcc68299d/bin/utaipan-Xvt2sAort0/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_126c6f52-b54d-4b84-864f-424dcc68299d/bin/utaipan-Xvt2sAort0 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 6e8dd9d71aae7a8c83467a9093ad4bffb4ddd59cddc2d90362f34ff651f24f9a --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-e04fb08 [2022-11-16 19:55:31,334 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 19:55:31,337 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 19:55:31,375 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 19:55:31,375 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 19:55:31,379 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 19:55:31,381 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 19:55:31,385 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 19:55:31,388 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 19:55:31,391 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 19:55:31,392 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 19:55:31,394 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 19:55:31,395 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 19:55:31,400 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 19:55:31,401 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 19:55:31,403 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 19:55:31,404 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 19:55:31,406 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 19:55:31,407 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 19:55:31,412 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 19:55:31,415 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 19:55:31,416 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 19:55:31,419 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 19:55:31,420 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 19:55:31,428 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 19:55:31,429 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 19:55:31,429 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 19:55:31,431 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 19:55:31,432 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 19:55:31,433 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 19:55:31,433 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 19:55:31,434 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 19:55:31,436 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 19:55:31,437 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 19:55:31,438 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 19:55:31,438 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 19:55:31,440 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 19:55:31,440 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 19:55:31,441 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 19:55:31,442 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 19:55:31,442 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 19:55:31,443 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_126c6f52-b54d-4b84-864f-424dcc68299d/bin/utaipan-Xvt2sAort0/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2022-11-16 19:55:31,481 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 19:55:31,481 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 19:55:31,482 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 19:55:31,482 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 19:55:31,483 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 19:55:31,483 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 19:55:31,483 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-16 19:55:31,483 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-16 19:55:31,484 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-16 19:55:31,484 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-16 19:55:31,484 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-16 19:55:31,484 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-16 19:55:31,484 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-16 19:55:31,485 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-16 19:55:31,485 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-16 19:55:31,485 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-16 19:55:31,485 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-16 19:55:31,485 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-16 19:55:31,486 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 19:55:31,486 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 19:55:31,487 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 19:55:31,487 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 19:55:31,487 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-16 19:55:31,487 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 19:55:31,487 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 19:55:31,506 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 19:55:31,507 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-16 19:55:31,507 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-16 19:55:31,507 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-16 19:55:31,507 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 19:55:31,508 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-16 19:55:31,508 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 19:55:31,508 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 19:55:31,508 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 19:55:31,508 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 19:55:31,508 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 19:55:31,509 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 19:55:31,509 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-16 19:55:31,509 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 19:55:31,509 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-16 19:55:31,509 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 19:55:31,510 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-16 19:55:31,510 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_126c6f52-b54d-4b84-864f-424dcc68299d/bin/utaipan-Xvt2sAort0/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_126c6f52-b54d-4b84-864f-424dcc68299d/bin/utaipan-Xvt2sAort0 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6e8dd9d71aae7a8c83467a9093ad4bffb4ddd59cddc2d90362f34ff651f24f9a [2022-11-16 19:55:31,745 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 19:55:31,769 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 19:55:31,772 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 19:55:31,774 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 19:55:31,775 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 19:55:31,776 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_126c6f52-b54d-4b84-864f-424dcc68299d/bin/utaipan-Xvt2sAort0/../../sv-benchmarks/c/memsafety/test-0235-1.i [2022-11-16 19:55:31,866 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_126c6f52-b54d-4b84-864f-424dcc68299d/bin/utaipan-Xvt2sAort0/data/a803ede93/13f4a435c7a74bfb8fbebae501adb2c9/FLAG51a1143ed [2022-11-16 19:55:32,379 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 19:55:32,379 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_126c6f52-b54d-4b84-864f-424dcc68299d/sv-benchmarks/c/memsafety/test-0235-1.i [2022-11-16 19:55:32,395 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_126c6f52-b54d-4b84-864f-424dcc68299d/bin/utaipan-Xvt2sAort0/data/a803ede93/13f4a435c7a74bfb8fbebae501adb2c9/FLAG51a1143ed [2022-11-16 19:55:32,692 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_126c6f52-b54d-4b84-864f-424dcc68299d/bin/utaipan-Xvt2sAort0/data/a803ede93/13f4a435c7a74bfb8fbebae501adb2c9 [2022-11-16 19:55:32,695 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 19:55:32,697 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 19:55:32,701 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 19:55:32,702 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 19:55:32,707 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 19:55:32,708 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 07:55:32" (1/1) ... [2022-11-16 19:55:32,709 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@65f1302a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:55:32, skipping insertion in model container [2022-11-16 19:55:32,712 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 07:55:32" (1/1) ... [2022-11-16 19:55:32,719 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 19:55:32,787 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 19:55:33,309 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 19:55:33,322 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 19:55:33,396 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 19:55:33,438 INFO L208 MainTranslator]: Completed translation [2022-11-16 19:55:33,439 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:55:33 WrapperNode [2022-11-16 19:55:33,439 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 19:55:33,440 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 19:55:33,440 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 19:55:33,441 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 19:55:33,451 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:55:33" (1/1) ... [2022-11-16 19:55:33,473 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:55:33" (1/1) ... [2022-11-16 19:55:33,508 INFO L138 Inliner]: procedures = 188, calls = 69, calls flagged for inlining = 13, calls inlined = 13, statements flattened = 234 [2022-11-16 19:55:33,508 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 19:55:33,509 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 19:55:33,509 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 19:55:33,510 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 19:55:33,517 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:55:33" (1/1) ... [2022-11-16 19:55:33,517 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:55:33" (1/1) ... [2022-11-16 19:55:33,522 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:55:33" (1/1) ... [2022-11-16 19:55:33,522 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:55:33" (1/1) ... [2022-11-16 19:55:33,533 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:55:33" (1/1) ... [2022-11-16 19:55:33,538 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:55:33" (1/1) ... [2022-11-16 19:55:33,541 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:55:33" (1/1) ... [2022-11-16 19:55:33,542 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:55:33" (1/1) ... [2022-11-16 19:55:33,546 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 19:55:33,547 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 19:55:33,547 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 19:55:33,548 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 19:55:33,548 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:55:33" (1/1) ... [2022-11-16 19:55:33,560 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 19:55:33,571 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_126c6f52-b54d-4b84-864f-424dcc68299d/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 19:55:33,583 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_126c6f52-b54d-4b84-864f-424dcc68299d/bin/utaipan-Xvt2sAort0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 19:55:33,592 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_126c6f52-b54d-4b84-864f-424dcc68299d/bin/utaipan-Xvt2sAort0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 19:55:33,624 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-16 19:55:33,624 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 19:55:33,624 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-16 19:55:33,624 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-16 19:55:33,625 INFO L130 BoogieDeclarations]: Found specification of procedure zalloc_or_die [2022-11-16 19:55:33,625 INFO L138 BoogieDeclarations]: Found implementation of procedure zalloc_or_die [2022-11-16 19:55:33,625 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 19:55:33,625 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-16 19:55:33,625 INFO L130 BoogieDeclarations]: Found specification of procedure l0_destroy [2022-11-16 19:55:33,625 INFO L138 BoogieDeclarations]: Found implementation of procedure l0_destroy [2022-11-16 19:55:33,625 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 19:55:33,626 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 19:55:33,626 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 19:55:33,840 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 19:55:33,842 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 19:55:34,489 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 19:55:34,556 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 19:55:34,556 INFO L300 CfgBuilder]: Removed 10 assume(true) statements. [2022-11-16 19:55:34,559 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 07:55:34 BoogieIcfgContainer [2022-11-16 19:55:34,560 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 19:55:34,563 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 19:55:34,563 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 19:55:34,567 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 19:55:34,567 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 07:55:32" (1/3) ... [2022-11-16 19:55:34,568 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25d283bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 07:55:34, skipping insertion in model container [2022-11-16 19:55:34,568 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:55:33" (2/3) ... [2022-11-16 19:55:34,569 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25d283bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 07:55:34, skipping insertion in model container [2022-11-16 19:55:34,569 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 07:55:34" (3/3) ... [2022-11-16 19:55:34,570 INFO L112 eAbstractionObserver]: Analyzing ICFG test-0235-1.i [2022-11-16 19:55:34,591 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 19:55:34,591 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 85 error locations. [2022-11-16 19:55:34,640 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 19:55:34,647 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@49d0333c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 19:55:34,647 INFO L358 AbstractCegarLoop]: Starting to check reachability of 85 error locations. [2022-11-16 19:55:34,652 INFO L276 IsEmpty]: Start isEmpty. Operand has 201 states, 102 states have (on average 2.1372549019607843) internal successors, (218), 187 states have internal predecessors, (218), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2022-11-16 19:55:34,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-16 19:55:34,660 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:55:34,660 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-16 19:55:34,661 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr32REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 82 more)] === [2022-11-16 19:55:34,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:55:34,666 INFO L85 PathProgramCache]: Analyzing trace with hash 450579, now seen corresponding path program 1 times [2022-11-16 19:55:34,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 19:55:34,677 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1492015558] [2022-11-16 19:55:34,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:55:34,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 19:55:34,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:55:34,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 19:55:34,837 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 19:55:34,838 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1492015558] [2022-11-16 19:55:34,839 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1492015558] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 19:55:34,840 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 19:55:34,840 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 19:55:34,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116128379] [2022-11-16 19:55:34,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 19:55:34,850 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-16 19:55:34,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 19:55:34,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-16 19:55:34,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-16 19:55:34,890 INFO L87 Difference]: Start difference. First operand has 201 states, 102 states have (on average 2.1372549019607843) internal successors, (218), 187 states have internal predecessors, (218), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) Second operand has 2 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 19:55:35,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:55:35,013 INFO L93 Difference]: Finished difference Result 201 states and 230 transitions. [2022-11-16 19:55:35,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-16 19:55:35,016 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 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 3 [2022-11-16 19:55:35,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:55:35,030 INFO L225 Difference]: With dead ends: 201 [2022-11-16 19:55:35,030 INFO L226 Difference]: Without dead ends: 200 [2022-11-16 19:55:35,033 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 [2022-11-16 19:55:35,036 INFO L413 NwaCegarLoop]: 206 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 206 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 19:55:35,037 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 206 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 19:55:35,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2022-11-16 19:55:35,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 200. [2022-11-16 19:55:35,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200 states, 102 states have (on average 2.0294117647058822) internal successors, (207), 186 states have internal predecessors, (207), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2022-11-16 19:55:35,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 229 transitions. [2022-11-16 19:55:35,111 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 229 transitions. Word has length 3 [2022-11-16 19:55:35,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:55:35,111 INFO L495 AbstractCegarLoop]: Abstraction has 200 states and 229 transitions. [2022-11-16 19:55:35,112 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 19:55:35,112 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 229 transitions. [2022-11-16 19:55:35,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-16 19:55:35,112 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:55:35,113 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-16 19:55:35,113 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 19:55:35,114 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting zalloc_or_dieErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 82 more)] === [2022-11-16 19:55:35,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:55:35,115 INFO L85 PathProgramCache]: Analyzing trace with hash 429096002, now seen corresponding path program 1 times [2022-11-16 19:55:35,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 19:55:35,115 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [713625358] [2022-11-16 19:55:35,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:55:35,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 19:55:35,145 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 19:55:35,146 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1390660855] [2022-11-16 19:55:35,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:55:35,147 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 19:55:35,147 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_126c6f52-b54d-4b84-864f-424dcc68299d/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 19:55:35,155 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_126c6f52-b54d-4b84-864f-424dcc68299d/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 19:55:35,180 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_126c6f52-b54d-4b84-864f-424dcc68299d/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-16 19:55:35,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:55:35,278 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-16 19:55:35,283 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 19:55:35,342 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-16 19:55:35,353 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 19:55:35,353 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 19:55:35,353 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 19:55:35,355 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [713625358] [2022-11-16 19:55:35,355 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 19:55:35,359 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1390660855] [2022-11-16 19:55:35,360 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1390660855] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 19:55:35,360 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 19:55:35,361 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 19:55:35,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029584270] [2022-11-16 19:55:35,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 19:55:35,365 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 19:55:35,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 19:55:35,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 19:55:35,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 19:55:35,369 INFO L87 Difference]: Start difference. First operand 200 states and 229 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 19:55:35,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:55:35,576 INFO L93 Difference]: Finished difference Result 199 states and 228 transitions. [2022-11-16 19:55:35,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 19:55:35,577 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 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 5 [2022-11-16 19:55:35,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:55:35,579 INFO L225 Difference]: With dead ends: 199 [2022-11-16 19:55:35,579 INFO L226 Difference]: Without dead ends: 199 [2022-11-16 19:55:35,579 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 19:55:35,580 INFO L413 NwaCegarLoop]: 201 mSDtfsCounter, 5 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 339 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 19:55:35,581 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 339 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-16 19:55:35,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2022-11-16 19:55:35,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 199. [2022-11-16 19:55:35,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199 states, 102 states have (on average 2.019607843137255) internal successors, (206), 185 states have internal predecessors, (206), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2022-11-16 19:55:35,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 228 transitions. [2022-11-16 19:55:35,592 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 228 transitions. Word has length 5 [2022-11-16 19:55:35,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:55:35,593 INFO L495 AbstractCegarLoop]: Abstraction has 199 states and 228 transitions. [2022-11-16 19:55:35,593 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 19:55:35,593 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 228 transitions. [2022-11-16 19:55:35,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-16 19:55:35,593 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:55:35,594 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-16 19:55:35,602 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_126c6f52-b54d-4b84-864f-424dcc68299d/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-16 19:55:35,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_126c6f52-b54d-4b84-864f-424dcc68299d/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2022-11-16 19:55:35,799 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting zalloc_or_dieErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 82 more)] === [2022-11-16 19:55:35,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:55:35,800 INFO L85 PathProgramCache]: Analyzing trace with hash 417074595, now seen corresponding path program 1 times [2022-11-16 19:55:35,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 19:55:35,800 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017958247] [2022-11-16 19:55:35,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:55:35,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 19:55:35,814 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 19:55:35,819 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1453138813] [2022-11-16 19:55:35,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:55:35,819 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 19:55:35,820 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_126c6f52-b54d-4b84-864f-424dcc68299d/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 19:55:35,821 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_126c6f52-b54d-4b84-864f-424dcc68299d/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 19:55:35,831 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_126c6f52-b54d-4b84-864f-424dcc68299d/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-16 19:55:35,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:55:35,927 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-16 19:55:35,930 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 19:55:35,991 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 [2022-11-16 19:55:36,023 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 19:55:36,023 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 19:55:36,023 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 19:55:36,023 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2017958247] [2022-11-16 19:55:36,024 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 19:55:36,024 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1453138813] [2022-11-16 19:55:36,024 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1453138813] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 19:55:36,024 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 19:55:36,024 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 19:55:36,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620114194] [2022-11-16 19:55:36,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 19:55:36,025 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 19:55:36,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 19:55:36,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 19:55:36,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 19:55:36,027 INFO L87 Difference]: Start difference. First operand 199 states and 228 transitions. Second operand has 4 states, 3 states have (on average 1.6666666666666667) 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) [2022-11-16 19:55:36,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:55:36,267 INFO L93 Difference]: Finished difference Result 204 states and 233 transitions. [2022-11-16 19:55:36,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 19:55:36,268 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) 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 [2022-11-16 19:55:36,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:55:36,270 INFO L225 Difference]: With dead ends: 204 [2022-11-16 19:55:36,270 INFO L226 Difference]: Without dead ends: 204 [2022-11-16 19:55:36,270 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 19:55:36,275 INFO L413 NwaCegarLoop]: 196 mSDtfsCounter, 8 mSDsluCounter, 345 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 541 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 19:55:36,276 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 541 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-16 19:55:36,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2022-11-16 19:55:36,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 204. [2022-11-16 19:55:36,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 204 states, 106 states have (on average 1.990566037735849) internal successors, (211), 189 states have internal predecessors, (211), 11 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2022-11-16 19:55:36,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 233 transitions. [2022-11-16 19:55:36,292 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 233 transitions. Word has length 6 [2022-11-16 19:55:36,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:55:36,292 INFO L495 AbstractCegarLoop]: Abstraction has 204 states and 233 transitions. [2022-11-16 19:55:36,292 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) 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) [2022-11-16 19:55:36,293 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 233 transitions. [2022-11-16 19:55:36,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-11-16 19:55:36,294 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:55:36,294 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 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] [2022-11-16 19:55:36,308 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_126c6f52-b54d-4b84-864f-424dcc68299d/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-16 19:55:36,497 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_126c6f52-b54d-4b84-864f-424dcc68299d/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 19:55:36,498 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting zalloc_or_dieErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 82 more)] === [2022-11-16 19:55:36,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:55:36,498 INFO L85 PathProgramCache]: Analyzing trace with hash -1974734944, now seen corresponding path program 1 times [2022-11-16 19:55:36,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 19:55:36,499 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1016742866] [2022-11-16 19:55:36,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:55:36,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 19:55:36,552 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 19:55:36,566 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1546511131] [2022-11-16 19:55:36,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:55:36,567 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 19:55:36,567 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_126c6f52-b54d-4b84-864f-424dcc68299d/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 19:55:36,568 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_126c6f52-b54d-4b84-864f-424dcc68299d/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 19:55:36,595 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_126c6f52-b54d-4b84-864f-424dcc68299d/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-16 19:55:36,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:55:36,795 INFO L263 TraceCheckSpWp]: Trace formula consists of 499 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-16 19:55:36,802 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 19:55:36,958 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-16 19:55:36,988 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-16 19:55:39,165 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 48 treesize of output 42 [2022-11-16 19:55:43,522 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 19:55:43,522 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1016742866] [2022-11-16 19:55:43,522 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 19:55:43,523 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1546511131] [2022-11-16 19:55:43,523 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_126c6f52-b54d-4b84-864f-424dcc68299d/bin/utaipan-Xvt2sAort0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. No stderr output. [2022-11-16 19:55:43,523 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [513638813] [2022-11-16 19:55:43,543 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_126c6f52-b54d-4b84-864f-424dcc68299d/bin/utaipan-Xvt2sAort0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 139 [2022-11-16 19:55:43,547 INFO L159 IcfgInterpreter]: Started Sifa with 23 locations of interest [2022-11-16 19:55:43,547 INFO L166 IcfgInterpreter]: Building call graph [2022-11-16 19:55:43,553 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-16 19:55:43,558 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-16 19:55:43,559 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-16 19:55:43,605 FATAL L? ?]: Ignoring exception! de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_126c6f52-b54d-4b84-864f-424dcc68299d/bin/utaipan-Xvt2sAort0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Connection to SMT solver broken at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.convertIOException(Executor.java:314) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.input(Executor.java:158) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.push(Scriptor.java:132) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.arrays.DiffWrapperScript.push(DiffWrapperScript.java:90) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.push(WrapperScript.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.scripttransfer.HistoryRecordingScript.push(HistoryRecordingScript.java:107) at de.uni_freiburg.informatik.ultimate.logic.Util.checkSat(Util.java:48) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.checkSatTerm(SmtUtils.java:273) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools.isFalse(SymbolicTools.java:221) at de.uni_freiburg.informatik.ultimate.lib.sifa.domain.RelationCheckUtil.isEqBottom_SolverAlphaSolver(RelationCheckUtil.java:56) at de.uni_freiburg.informatik.ultimate.lib.sifa.domain.ExplicitValueDomain.isEqBottom(ExplicitValueDomain.java:73) at de.uni_freiburg.informatik.ultimate.lib.sifa.domain.CompoundDomain.isEqBottom(CompoundDomain.java:84) at de.uni_freiburg.informatik.ultimate.lib.sifa.domain.StatsWrapperDomain.isEqBottom(StatsWrapperDomain.java:69) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.earlyExitAfterStep(DagInterpreter.java:139) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:125) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpretLoisInProcedure(IcfgInterpreter.java:136) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpret(IcfgInterpreter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:102) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:336) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:262) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Caused by: java.io.IOException: Stream closed at java.base/java.lang.ProcessBuilder$NullOutputStream.write(ProcessBuilder.java:442) at java.base/java.io.OutputStream.write(OutputStream.java:157) at java.base/java.io.BufferedOutputStream.flushBuffer(BufferedOutputStream.java:81) at java.base/java.io.BufferedOutputStream.flush(BufferedOutputStream.java:142) at java.base/sun.nio.cs.StreamEncoder.implFlush(StreamEncoder.java:318) at java.base/sun.nio.cs.StreamEncoder.flush(StreamEncoder.java:153) at java.base/java.io.OutputStreamWriter.flush(OutputStreamWriter.java:251) at java.base/java.io.BufferedWriter.flush(BufferedWriter.java:257) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.input(Executor.java:156) ... 44 more [2022-11-16 19:55:43,613 INFO L184 FreeRefinementEngine]: Found 0 perfect and 0 imperfect interpolant sequences. [2022-11-16 19:55:43,613 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2022-11-16 19:55:43,613 ERROR L170 FreeRefinementEngine]: Strategy SIFA_TAIPAN failed to provide any proof altough trace is infeasible [2022-11-16 19:55:43,614 INFO L359 BasicCegarLoop]: Counterexample might be feasible [2022-11-16 19:55:43,622 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location zalloc_or_dieErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE (84 of 85 remaining) [2022-11-16 19:55:43,628 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (83 of 85 remaining) [2022-11-16 19:55:43,628 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (82 of 85 remaining) [2022-11-16 19:55:43,628 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (81 of 85 remaining) [2022-11-16 19:55:43,628 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (80 of 85 remaining) [2022-11-16 19:55:43,629 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (79 of 85 remaining) [2022-11-16 19:55:43,631 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (78 of 85 remaining) [2022-11-16 19:55:43,631 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (77 of 85 remaining) [2022-11-16 19:55:43,631 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (76 of 85 remaining) [2022-11-16 19:55:43,632 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (75 of 85 remaining) [2022-11-16 19:55:43,632 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (74 of 85 remaining) [2022-11-16 19:55:43,637 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (73 of 85 remaining) [2022-11-16 19:55:43,637 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (72 of 85 remaining) [2022-11-16 19:55:43,637 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (71 of 85 remaining) [2022-11-16 19:55:43,638 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (70 of 85 remaining) [2022-11-16 19:55:43,638 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (69 of 85 remaining) [2022-11-16 19:55:43,638 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (68 of 85 remaining) [2022-11-16 19:55:43,638 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (67 of 85 remaining) [2022-11-16 19:55:43,638 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (66 of 85 remaining) [2022-11-16 19:55:43,639 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE (65 of 85 remaining) [2022-11-16 19:55:43,640 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE (64 of 85 remaining) [2022-11-16 19:55:43,640 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE (63 of 85 remaining) [2022-11-16 19:55:43,640 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE (62 of 85 remaining) [2022-11-16 19:55:43,640 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr22REQUIRES_VIOLATIONMEMORY_DEREFERENCE (61 of 85 remaining) [2022-11-16 19:55:43,641 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE (60 of 85 remaining) [2022-11-16 19:55:43,641 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE (59 of 85 remaining) [2022-11-16 19:55:43,642 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr25REQUIRES_VIOLATIONMEMORY_DEREFERENCE (58 of 85 remaining) [2022-11-16 19:55:43,642 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr26REQUIRES_VIOLATIONMEMORY_DEREFERENCE (57 of 85 remaining) [2022-11-16 19:55:43,642 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr27REQUIRES_VIOLATIONMEMORY_DEREFERENCE (56 of 85 remaining) [2022-11-16 19:55:43,642 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr28REQUIRES_VIOLATIONMEMORY_DEREFERENCE (55 of 85 remaining) [2022-11-16 19:55:43,642 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr29REQUIRES_VIOLATIONMEMORY_DEREFERENCE (54 of 85 remaining) [2022-11-16 19:55:43,643 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr30REQUIRES_VIOLATIONMEMORY_DEREFERENCE (53 of 85 remaining) [2022-11-16 19:55:43,643 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr31REQUIRES_VIOLATIONMEMORY_DEREFERENCE (52 of 85 remaining) [2022-11-16 19:55:43,643 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr32REQUIRES_VIOLATIONMEMORY_DEREFERENCE (51 of 85 remaining) [2022-11-16 19:55:43,643 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr33REQUIRES_VIOLATIONMEMORY_DEREFERENCE (50 of 85 remaining) [2022-11-16 19:55:43,643 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr34REQUIRES_VIOLATIONMEMORY_DEREFERENCE (49 of 85 remaining) [2022-11-16 19:55:43,644 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr35REQUIRES_VIOLATIONMEMORY_DEREFERENCE (48 of 85 remaining) [2022-11-16 19:55:43,644 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr36REQUIRES_VIOLATIONMEMORY_DEREFERENCE (47 of 85 remaining) [2022-11-16 19:55:43,644 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr37REQUIRES_VIOLATIONMEMORY_DEREFERENCE (46 of 85 remaining) [2022-11-16 19:55:43,644 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr38REQUIRES_VIOLATIONMEMORY_DEREFERENCE (45 of 85 remaining) [2022-11-16 19:55:43,644 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr39REQUIRES_VIOLATIONMEMORY_DEREFERENCE (44 of 85 remaining) [2022-11-16 19:55:43,645 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr40REQUIRES_VIOLATIONMEMORY_DEREFERENCE (43 of 85 remaining) [2022-11-16 19:55:43,645 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr41REQUIRES_VIOLATIONMEMORY_DEREFERENCE (42 of 85 remaining) [2022-11-16 19:55:43,645 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr42REQUIRES_VIOLATIONMEMORY_DEREFERENCE (41 of 85 remaining) [2022-11-16 19:55:43,645 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr43REQUIRES_VIOLATIONMEMORY_DEREFERENCE (40 of 85 remaining) [2022-11-16 19:55:43,645 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr44ASSERT_VIOLATIONMEMORY_LEAK (39 of 85 remaining) [2022-11-16 19:55:43,646 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location l0_destroyErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (38 of 85 remaining) [2022-11-16 19:55:43,646 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location l0_destroyErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (37 of 85 remaining) [2022-11-16 19:55:43,646 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location l0_destroyErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (36 of 85 remaining) [2022-11-16 19:55:43,646 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location l0_destroyErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (35 of 85 remaining) [2022-11-16 19:55:43,646 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location l0_destroyErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (34 of 85 remaining) [2022-11-16 19:55:43,647 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location l0_destroyErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (33 of 85 remaining) [2022-11-16 19:55:43,647 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location l0_destroyErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (32 of 85 remaining) [2022-11-16 19:55:43,647 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location l0_destroyErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (31 of 85 remaining) [2022-11-16 19:55:43,647 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location l0_destroyErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (30 of 85 remaining) [2022-11-16 19:55:43,647 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location l0_destroyErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (29 of 85 remaining) [2022-11-16 19:55:43,648 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location l0_destroyErr10ASSERT_VIOLATIONMEMORY_FREE (28 of 85 remaining) [2022-11-16 19:55:43,648 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location l0_destroyErr11ASSERT_VIOLATIONMEMORY_FREE (27 of 85 remaining) [2022-11-16 19:55:43,648 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location l0_destroyErr12ASSERT_VIOLATIONMEMORY_FREE (26 of 85 remaining) [2022-11-16 19:55:43,648 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location l0_destroyErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (25 of 85 remaining) [2022-11-16 19:55:43,649 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location l0_destroyErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (24 of 85 remaining) [2022-11-16 19:55:43,650 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location l0_destroyErr15ASSERT_VIOLATIONMEMORY_FREE (23 of 85 remaining) [2022-11-16 19:55:43,650 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location l0_destroyErr16ASSERT_VIOLATIONMEMORY_FREE (22 of 85 remaining) [2022-11-16 19:55:43,650 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location l0_destroyErr17ASSERT_VIOLATIONMEMORY_FREE (21 of 85 remaining) [2022-11-16 19:55:43,650 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location l0_destroyErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE (20 of 85 remaining) [2022-11-16 19:55:43,650 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location l0_destroyErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 85 remaining) [2022-11-16 19:55:43,651 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location l0_destroyErr20ASSERT_VIOLATIONMEMORY_FREE (18 of 85 remaining) [2022-11-16 19:55:43,651 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location l0_destroyErr21ASSERT_VIOLATIONMEMORY_FREE (17 of 85 remaining) [2022-11-16 19:55:43,652 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location l0_destroyErr22ASSERT_VIOLATIONMEMORY_FREE (16 of 85 remaining) [2022-11-16 19:55:43,652 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location l0_destroyErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 85 remaining) [2022-11-16 19:55:43,652 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location l0_destroyErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 85 remaining) [2022-11-16 19:55:43,652 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location l0_destroyErr25ASSERT_VIOLATIONMEMORY_FREE (13 of 85 remaining) [2022-11-16 19:55:43,671 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location l0_destroyErr26ASSERT_VIOLATIONMEMORY_FREE (12 of 85 remaining) [2022-11-16 19:55:43,671 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location l0_destroyErr27ASSERT_VIOLATIONMEMORY_FREE (11 of 85 remaining) [2022-11-16 19:55:43,671 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location l0_destroyErr28REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 85 remaining) [2022-11-16 19:55:43,672 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location l0_destroyErr29REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 85 remaining) [2022-11-16 19:55:43,672 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location l0_destroyErr30ASSERT_VIOLATIONMEMORY_FREE (8 of 85 remaining) [2022-11-16 19:55:43,672 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location l0_destroyErr31ASSERT_VIOLATIONMEMORY_FREE (7 of 85 remaining) [2022-11-16 19:55:43,672 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location l0_destroyErr32ASSERT_VIOLATIONMEMORY_FREE (6 of 85 remaining) [2022-11-16 19:55:43,673 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location l0_destroyErr33REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 85 remaining) [2022-11-16 19:55:43,673 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location l0_destroyErr34REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 85 remaining) [2022-11-16 19:55:43,673 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location l0_destroyErr35ASSERT_VIOLATIONMEMORY_FREE (3 of 85 remaining) [2022-11-16 19:55:43,673 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location l0_destroyErr36ASSERT_VIOLATIONMEMORY_FREE (2 of 85 remaining) [2022-11-16 19:55:43,674 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location l0_destroyErr37ASSERT_VIOLATIONMEMORY_FREE (1 of 85 remaining) [2022-11-16 19:55:43,674 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location zalloc_or_dieErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE (0 of 85 remaining) [2022-11-16 19:55:43,687 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_126c6f52-b54d-4b84-864f-424dcc68299d/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-16 19:55:43,880 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_126c6f52-b54d-4b84-864f-424dcc68299d/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 19:55:43,883 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2022-11-16 19:55:43,886 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-16 19:55:43,910 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.11 07:55:43 BoogieIcfgContainer [2022-11-16 19:55:43,910 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-16 19:55:43,911 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-16 19:55:43,911 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-16 19:55:43,911 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-16 19:55:43,911 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 07:55:34" (3/4) ... [2022-11-16 19:55:43,915 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-16 19:55:43,915 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-16 19:55:43,916 INFO L158 Benchmark]: Toolchain (without parser) took 11218.30ms. Allocated memory was 107.0MB in the beginning and 157.3MB in the end (delta: 50.3MB). Free memory was 59.7MB in the beginning and 125.1MB in the end (delta: -65.4MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 19:55:43,916 INFO L158 Benchmark]: CDTParser took 0.28ms. Allocated memory is still 107.0MB. Free memory is still 77.7MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 19:55:43,916 INFO L158 Benchmark]: CACSL2BoogieTranslator took 738.33ms. Allocated memory is still 107.0MB. Free memory was 59.5MB in the beginning and 68.5MB in the end (delta: -9.0MB). Peak memory consumption was 6.7MB. Max. memory is 16.1GB. [2022-11-16 19:55:43,916 INFO L158 Benchmark]: Boogie Procedure Inliner took 68.33ms. Allocated memory is still 107.0MB. Free memory was 68.5MB in the beginning and 65.5MB in the end (delta: 3.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-16 19:55:43,917 INFO L158 Benchmark]: Boogie Preprocessor took 37.30ms. Allocated memory is still 107.0MB. Free memory was 65.5MB in the beginning and 63.2MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-16 19:55:43,917 INFO L158 Benchmark]: RCFGBuilder took 1012.80ms. Allocated memory was 107.0MB in the beginning and 130.0MB in the end (delta: 23.1MB). Free memory was 63.0MB in the beginning and 85.8MB in the end (delta: -22.8MB). Peak memory consumption was 30.5MB. Max. memory is 16.1GB. [2022-11-16 19:55:43,917 INFO L158 Benchmark]: TraceAbstraction took 9347.29ms. Allocated memory was 130.0MB in the beginning and 157.3MB in the end (delta: 27.3MB). Free memory was 85.0MB in the beginning and 125.1MB in the end (delta: -40.2MB). Peak memory consumption was 44.8MB. Max. memory is 16.1GB. [2022-11-16 19:55:43,918 INFO L158 Benchmark]: Witness Printer took 4.55ms. Allocated memory is still 157.3MB. Free memory is still 125.1MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 19:55:43,920 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28ms. Allocated memory is still 107.0MB. Free memory is still 77.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 738.33ms. Allocated memory is still 107.0MB. Free memory was 59.5MB in the beginning and 68.5MB in the end (delta: -9.0MB). Peak memory consumption was 6.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 68.33ms. Allocated memory is still 107.0MB. Free memory was 68.5MB in the beginning and 65.5MB in the end (delta: 3.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 37.30ms. Allocated memory is still 107.0MB. Free memory was 65.5MB in the beginning and 63.2MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 1012.80ms. Allocated memory was 107.0MB in the beginning and 130.0MB in the end (delta: 23.1MB). Free memory was 63.0MB in the beginning and 85.8MB in the end (delta: -22.8MB). Peak memory consumption was 30.5MB. Max. memory is 16.1GB. * TraceAbstraction took 9347.29ms. Allocated memory was 130.0MB in the beginning and 157.3MB in the end (delta: 27.3MB). Free memory was 85.0MB in the beginning and 125.1MB in the end (delta: -40.2MB). Peak memory consumption was 44.8MB. Max. memory is 16.1GB. * Witness Printer took 4.55ms. Allocated memory is still 157.3MB. Free memory is still 125.1MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L777] static struct L0 *list; [L779] CALL l0_insert(&list) [L708] CALL, EXPR zalloc_or_die(sizeof *item) [L667] CALL, EXPR calloc_model(1U, size) [L641] void *ptr = malloc(nmemb * size); [L642] EXPR, FCALL memset(ptr, 0, nmemb * size) [L642] return memset(ptr, 0, nmemb * size); [L667] RET, EXPR calloc_model(1U, size) [L667] void *ptr = calloc_model(1U, size); [L668] COND FALSE !(\read(*ptr)) [L708] RET, EXPR zalloc_or_die(sizeof *item) [L708] struct L0 *item = zalloc_or_die(sizeof *item); [L710] CALL l1_insert(&item->down) [L699] CALL, EXPR zalloc_or_die(sizeof *item) [L667] CALL, EXPR calloc_model(1U, size) [L641] void *ptr = malloc(nmemb * size); [L642] EXPR, FCALL memset(ptr, 0, nmemb * size) [L642] return memset(ptr, 0, nmemb * size); [L667] RET, EXPR calloc_model(1U, size) [L667] void *ptr = calloc_model(1U, size); [L668] COND FALSE !(\read(*ptr)) [L699] RET, EXPR zalloc_or_die(sizeof *item) [L699] struct L1 *item = zalloc_or_die(sizeof *item); [L701] CALL l2_insert(&item->down) [L690] CALL, EXPR zalloc_or_die(sizeof *item) [L667] CALL, EXPR calloc_model(1U, size) [L641] void *ptr = malloc(nmemb * size); [L642] EXPR, FCALL memset(ptr, 0, nmemb * size) [L642] return memset(ptr, 0, nmemb * size); [L667] RET, EXPR calloc_model(1U, size) [L667] void *ptr = calloc_model(1U, size); [L668] COND FALSE !(\read(*ptr)) [L690] RET, EXPR zalloc_or_die(sizeof *item) [L690] struct L2 *item = zalloc_or_die(sizeof *item); [L692] CALL l3_insert(&item->down) [L681] CALL, EXPR zalloc_or_die(sizeof *item) [L667] CALL, EXPR calloc_model(1U, size) [L641] void *ptr = malloc(nmemb * size); [L642] EXPR, FCALL memset(ptr, 0, nmemb * size) [L642] return memset(ptr, 0, nmemb * size); [L667] RET, EXPR calloc_model(1U, size) [L667] void *ptr = calloc_model(1U, size); [L668] COND FALSE !(\read(*ptr)) [L681] RET, EXPR zalloc_or_die(sizeof *item) [L681] struct L3 *item = zalloc_or_die(sizeof *item); [L683] CALL l4_insert(&item->down) [L674] CALL, EXPR zalloc_or_die(sizeof *item) [L667] CALL, EXPR calloc_model(1U, size) [L641] void *ptr = malloc(nmemb * size); [L642] EXPR, FCALL memset(ptr, 0, nmemb * size) [L642] return memset(ptr, 0, nmemb * size); [L667] RET, EXPR calloc_model(1U, size) [L667] void *ptr = calloc_model(1U, size); [L668] COND FALSE !(\read(*ptr)) [L674] RET, EXPR zalloc_or_die(sizeof *item) [L674] struct L4 *item = zalloc_or_die(sizeof *item); [L675] CALL zalloc_or_die(119U) [L667] CALL calloc_model(1U, size) [L641] void *ptr = malloc(nmemb * size); [L642] CALL memset(ptr, 0, nmemb * size) - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 775]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 719]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 719]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 719]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 722]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 722]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 722]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 734]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 734]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 734]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 746]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 746]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 746]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 758]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 758]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 758]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 770]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 770]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 770]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 201 locations, 85 error locations. Started 1 CEGAR loops. OverallTime: 9.3s, OverallIterations: 4, TraceHistogramMax: 6, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 13 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 13 mSDsluCounter, 1086 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 483 mSDsCounter, 4 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 273 IncrementalHoareTripleChecker+Invalid, 277 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 4 mSolverCounterUnsat, 603 mSDtfsCounter, 273 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=204occurred in iteration=3, InterpolantAutomatonStates: 9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 7.0s InterpolantComputationTime, 59 NumberOfCodeBlocks, 59 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 11 ConstructedInterpolants, 0 QuantifiedInterpolants, 43 SizeOfPredicates, 9 NumberOfNonLiveVariables, 671 ConjunctsInSsa, 45 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_126c6f52-b54d-4b84-864f-424dcc68299d/bin/utaipan-Xvt2sAort0/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_126c6f52-b54d-4b84-864f-424dcc68299d/bin/utaipan-Xvt2sAort0/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_126c6f52-b54d-4b84-864f-424dcc68299d/bin/utaipan-Xvt2sAort0/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_126c6f52-b54d-4b84-864f-424dcc68299d/bin/utaipan-Xvt2sAort0/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety/test-0235-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_126c6f52-b54d-4b84-864f-424dcc68299d/bin/utaipan-Xvt2sAort0/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_126c6f52-b54d-4b84-864f-424dcc68299d/bin/utaipan-Xvt2sAort0 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 6e8dd9d71aae7a8c83467a9093ad4bffb4ddd59cddc2d90362f34ff651f24f9a --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-e04fb08 [2022-11-16 19:55:45,982 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 19:55:45,986 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 19:55:46,011 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 19:55:46,013 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 19:55:46,017 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 19:55:46,020 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 19:55:46,025 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 19:55:46,027 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 19:55:46,035 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 19:55:46,036 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 19:55:46,039 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 19:55:46,039 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 19:55:46,042 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 19:55:46,044 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 19:55:46,046 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 19:55:46,048 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 19:55:46,049 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 19:55:46,054 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 19:55:46,058 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 19:55:46,063 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 19:55:46,064 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 19:55:46,065 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 19:55:46,067 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 19:55:46,074 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 19:55:46,076 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 19:55:46,076 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 19:55:46,077 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 19:55:46,078 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 19:55:46,079 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 19:55:46,080 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 19:55:46,081 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 19:55:46,083 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 19:55:46,083 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 19:55:46,084 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 19:55:46,084 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 19:55:46,085 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 19:55:46,085 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 19:55:46,086 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 19:55:46,091 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 19:55:46,092 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 19:55:46,092 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_126c6f52-b54d-4b84-864f-424dcc68299d/bin/utaipan-Xvt2sAort0/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2022-11-16 19:55:46,120 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 19:55:46,120 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 19:55:46,120 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 19:55:46,121 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 19:55:46,121 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 19:55:46,121 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 19:55:46,122 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-16 19:55:46,122 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-16 19:55:46,122 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-16 19:55:46,122 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-16 19:55:46,123 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-16 19:55:46,123 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-16 19:55:46,123 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 19:55:46,124 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 19:55:46,124 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 19:55:46,124 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 19:55:46,124 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-16 19:55:46,125 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 19:55:46,125 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 19:55:46,125 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 19:55:46,125 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-16 19:55:46,126 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-16 19:55:46,126 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-16 19:55:46,126 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 19:55:46,126 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-16 19:55:46,126 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-16 19:55:46,127 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-16 19:55:46,127 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 19:55:46,127 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 19:55:46,127 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 19:55:46,128 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 19:55:46,128 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 19:55:46,128 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 19:55:46,128 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 19:55:46,128 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 19:55:46,129 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-11-16 19:55:46,129 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-16 19:55:46,129 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-16 19:55:46,129 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-16 19:55:46,129 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_126c6f52-b54d-4b84-864f-424dcc68299d/bin/utaipan-Xvt2sAort0/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_126c6f52-b54d-4b84-864f-424dcc68299d/bin/utaipan-Xvt2sAort0 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6e8dd9d71aae7a8c83467a9093ad4bffb4ddd59cddc2d90362f34ff651f24f9a [2022-11-16 19:55:46,530 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 19:55:46,558 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 19:55:46,562 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 19:55:46,563 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 19:55:46,564 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 19:55:46,566 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_126c6f52-b54d-4b84-864f-424dcc68299d/bin/utaipan-Xvt2sAort0/../../sv-benchmarks/c/memsafety/test-0235-1.i [2022-11-16 19:55:46,645 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_126c6f52-b54d-4b84-864f-424dcc68299d/bin/utaipan-Xvt2sAort0/data/79b4121a4/618feaaa8e8c4768b2d881fc2dfaf6a9/FLAGeeb5d3413 [2022-11-16 19:55:47,293 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 19:55:47,299 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_126c6f52-b54d-4b84-864f-424dcc68299d/sv-benchmarks/c/memsafety/test-0235-1.i [2022-11-16 19:55:47,321 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_126c6f52-b54d-4b84-864f-424dcc68299d/bin/utaipan-Xvt2sAort0/data/79b4121a4/618feaaa8e8c4768b2d881fc2dfaf6a9/FLAGeeb5d3413 [2022-11-16 19:55:47,528 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_126c6f52-b54d-4b84-864f-424dcc68299d/bin/utaipan-Xvt2sAort0/data/79b4121a4/618feaaa8e8c4768b2d881fc2dfaf6a9 [2022-11-16 19:55:47,531 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 19:55:47,532 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 19:55:47,533 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 19:55:47,534 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 19:55:47,540 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 19:55:47,541 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 07:55:47" (1/1) ... [2022-11-16 19:55:47,543 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@77df4358 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:55:47, skipping insertion in model container [2022-11-16 19:55:47,544 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 07:55:47" (1/1) ... [2022-11-16 19:55:47,551 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 19:55:47,582 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 19:55:48,029 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 19:55:48,042 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 19:55:48,087 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 19:55:48,126 INFO L208 MainTranslator]: Completed translation [2022-11-16 19:55:48,126 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:55:48 WrapperNode [2022-11-16 19:55:48,127 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 19:55:48,128 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 19:55:48,128 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 19:55:48,128 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 19:55:48,135 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:55:48" (1/1) ... [2022-11-16 19:55:48,154 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:55:48" (1/1) ... [2022-11-16 19:55:48,183 INFO L138 Inliner]: procedures = 189, calls = 69, calls flagged for inlining = 13, calls inlined = 13, statements flattened = 230 [2022-11-16 19:55:48,183 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 19:55:48,184 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 19:55:48,184 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 19:55:48,184 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 19:55:48,193 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:55:48" (1/1) ... [2022-11-16 19:55:48,194 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:55:48" (1/1) ... [2022-11-16 19:55:48,198 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:55:48" (1/1) ... [2022-11-16 19:55:48,198 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:55:48" (1/1) ... [2022-11-16 19:55:48,213 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:55:48" (1/1) ... [2022-11-16 19:55:48,218 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:55:48" (1/1) ... [2022-11-16 19:55:48,230 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:55:48" (1/1) ... [2022-11-16 19:55:48,232 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:55:48" (1/1) ... [2022-11-16 19:55:48,236 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 19:55:48,237 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 19:55:48,237 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 19:55:48,247 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 19:55:48,250 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:55:48" (1/1) ... [2022-11-16 19:55:48,260 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 19:55:48,278 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_126c6f52-b54d-4b84-864f-424dcc68299d/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 19:55:48,289 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_126c6f52-b54d-4b84-864f-424dcc68299d/bin/utaipan-Xvt2sAort0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 19:55:48,325 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_126c6f52-b54d-4b84-864f-424dcc68299d/bin/utaipan-Xvt2sAort0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 19:55:48,343 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-16 19:55:48,343 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 19:55:48,343 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-16 19:55:48,345 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-16 19:55:48,345 INFO L130 BoogieDeclarations]: Found specification of procedure zalloc_or_die [2022-11-16 19:55:48,346 INFO L138 BoogieDeclarations]: Found implementation of procedure zalloc_or_die [2022-11-16 19:55:48,346 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 19:55:48,346 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-16 19:55:48,347 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-16 19:55:48,347 INFO L130 BoogieDeclarations]: Found specification of procedure l0_destroy [2022-11-16 19:55:48,347 INFO L138 BoogieDeclarations]: Found implementation of procedure l0_destroy [2022-11-16 19:55:48,347 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 19:55:48,347 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 19:55:48,566 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 19:55:48,568 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 19:55:49,477 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 19:55:49,485 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 19:55:49,485 INFO L300 CfgBuilder]: Removed 10 assume(true) statements. [2022-11-16 19:55:49,487 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 07:55:49 BoogieIcfgContainer [2022-11-16 19:55:49,487 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 19:55:49,489 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 19:55:49,490 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 19:55:49,492 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 19:55:49,493 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 07:55:47" (1/3) ... [2022-11-16 19:55:49,493 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@fcd2c8e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 07:55:49, skipping insertion in model container [2022-11-16 19:55:49,494 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:55:48" (2/3) ... [2022-11-16 19:55:49,494 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@fcd2c8e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 07:55:49, skipping insertion in model container [2022-11-16 19:55:49,494 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 07:55:49" (3/3) ... [2022-11-16 19:55:49,495 INFO L112 eAbstractionObserver]: Analyzing ICFG test-0235-1.i [2022-11-16 19:55:49,513 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 19:55:49,514 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 85 error locations. [2022-11-16 19:55:49,562 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 19:55:49,569 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@53211686, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 19:55:49,569 INFO L358 AbstractCegarLoop]: Starting to check reachability of 85 error locations. [2022-11-16 19:55:49,575 INFO L276 IsEmpty]: Start isEmpty. Operand has 228 states, 129 states have (on average 1.9069767441860466) internal successors, (246), 214 states have internal predecessors, (246), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2022-11-16 19:55:49,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-16 19:55:49,582 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:55:49,583 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-16 19:55:49,583 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr32REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 82 more)] === [2022-11-16 19:55:49,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:55:49,590 INFO L85 PathProgramCache]: Analyzing trace with hash 929958, now seen corresponding path program 1 times [2022-11-16 19:55:49,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-16 19:55:49,623 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [923120084] [2022-11-16 19:55:49,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:55:49,623 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 19:55:49,624 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_126c6f52-b54d-4b84-864f-424dcc68299d/bin/utaipan-Xvt2sAort0/mathsat [2022-11-16 19:55:49,635 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_126c6f52-b54d-4b84-864f-424dcc68299d/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 19:55:49,670 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_126c6f52-b54d-4b84-864f-424dcc68299d/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-16 19:55:49,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:55:49,742 INFO L263 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 1 conjunts are in the unsatisfiable core [2022-11-16 19:55:49,747 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 19:55:49,766 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 19:55:49,766 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 19:55:49,768 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-16 19:55:49,768 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [923120084] [2022-11-16 19:55:49,769 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [923120084] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 19:55:49,769 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 19:55:49,770 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 19:55:49,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079333982] [2022-11-16 19:55:49,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 19:55:49,777 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-16 19:55:49,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-16 19:55:49,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-16 19:55:49,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-16 19:55:49,824 INFO L87 Difference]: Start difference. First operand has 228 states, 129 states have (on average 1.9069767441860466) internal successors, (246), 214 states have internal predecessors, (246), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) 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) [2022-11-16 19:55:49,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:55:49,890 INFO L93 Difference]: Finished difference Result 228 states and 257 transitions. [2022-11-16 19:55:49,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-16 19:55:49,892 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 [2022-11-16 19:55:49,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:55:49,905 INFO L225 Difference]: With dead ends: 228 [2022-11-16 19:55:49,905 INFO L226 Difference]: Without dead ends: 226 [2022-11-16 19:55:49,906 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-16 19:55:49,913 INFO L413 NwaCegarLoop]: 257 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, 257 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 19:55:49,914 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 257 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 19:55:49,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2022-11-16 19:55:49,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 226. [2022-11-16 19:55:49,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 226 states, 128 states have (on average 1.8203125) internal successors, (233), 212 states have internal predecessors, (233), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2022-11-16 19:55:49,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 255 transitions. [2022-11-16 19:55:49,973 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 255 transitions. Word has length 4 [2022-11-16 19:55:49,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:55:49,974 INFO L495 AbstractCegarLoop]: Abstraction has 226 states and 255 transitions. [2022-11-16 19:55:49,974 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) [2022-11-16 19:55:49,974 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 255 transitions. [2022-11-16 19:55:49,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-16 19:55:49,975 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:55:49,975 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-16 19:55:49,991 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_126c6f52-b54d-4b84-864f-424dcc68299d/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-11-16 19:55:50,186 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_126c6f52-b54d-4b84-864f-424dcc68299d/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 19:55:50,187 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting zalloc_or_dieErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 82 more)] === [2022-11-16 19:55:50,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:55:50,187 INFO L85 PathProgramCache]: Analyzing trace with hash 889928016, now seen corresponding path program 1 times [2022-11-16 19:55:50,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-16 19:55:50,188 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [882038852] [2022-11-16 19:55:50,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:55:50,189 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 19:55:50,189 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_126c6f52-b54d-4b84-864f-424dcc68299d/bin/utaipan-Xvt2sAort0/mathsat [2022-11-16 19:55:50,190 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_126c6f52-b54d-4b84-864f-424dcc68299d/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 19:55:50,194 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_126c6f52-b54d-4b84-864f-424dcc68299d/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-16 19:55:50,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:55:50,288 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 19:55:50,290 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 19:55:50,345 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-16 19:55:50,358 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 19:55:50,358 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 19:55:50,358 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-16 19:55:50,358 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [882038852] [2022-11-16 19:55:50,359 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [882038852] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 19:55:50,359 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 19:55:50,359 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 19:55:50,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288188137] [2022-11-16 19:55:50,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 19:55:50,361 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 19:55:50,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-16 19:55:50,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 19:55:50,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 19:55:50,363 INFO L87 Difference]: Start difference. First operand 226 states and 255 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) [2022-11-16 19:55:50,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:55:50,691 INFO L93 Difference]: Finished difference Result 225 states and 254 transitions. [2022-11-16 19:55:50,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 19:55:50,692 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 [2022-11-16 19:55:50,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:55:50,693 INFO L225 Difference]: With dead ends: 225 [2022-11-16 19:55:50,693 INFO L226 Difference]: Without dead ends: 225 [2022-11-16 19:55:50,694 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 [2022-11-16 19:55:50,695 INFO L413 NwaCegarLoop]: 249 mSDtfsCounter, 9 mSDsluCounter, 159 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 408 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-16 19:55:50,695 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 408 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-16 19:55:50,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2022-11-16 19:55:50,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 225. [2022-11-16 19:55:50,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 128 states have (on average 1.8125) internal successors, (232), 211 states have internal predecessors, (232), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2022-11-16 19:55:50,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 254 transitions. [2022-11-16 19:55:50,709 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 254 transitions. Word has length 6 [2022-11-16 19:55:50,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:55:50,709 INFO L495 AbstractCegarLoop]: Abstraction has 225 states and 254 transitions. [2022-11-16 19:55:50,709 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) [2022-11-16 19:55:50,710 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 254 transitions. [2022-11-16 19:55:50,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-16 19:55:50,710 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:55:50,710 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-16 19:55:50,721 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_126c6f52-b54d-4b84-864f-424dcc68299d/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-16 19:55:50,919 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_126c6f52-b54d-4b84-864f-424dcc68299d/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 19:55:50,919 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting zalloc_or_dieErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 82 more)] === [2022-11-16 19:55:50,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:55:50,920 INFO L85 PathProgramCache]: Analyzing trace with hash 1817965136, now seen corresponding path program 1 times [2022-11-16 19:55:50,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-16 19:55:50,920 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2058486934] [2022-11-16 19:55:50,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:55:50,921 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 19:55:50,921 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_126c6f52-b54d-4b84-864f-424dcc68299d/bin/utaipan-Xvt2sAort0/mathsat [2022-11-16 19:55:50,922 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_126c6f52-b54d-4b84-864f-424dcc68299d/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 19:55:50,960 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_126c6f52-b54d-4b84-864f-424dcc68299d/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-11-16 19:55:51,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:55:51,023 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-16 19:55:51,026 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 19:55:51,064 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-16 19:55:51,100 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 19:55:51,100 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 19:55:51,100 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-16 19:55:51,104 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2058486934] [2022-11-16 19:55:51,104 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2058486934] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 19:55:51,104 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 19:55:51,105 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 19:55:51,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271715347] [2022-11-16 19:55:51,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 19:55:51,106 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 19:55:51,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-16 19:55:51,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 19:55:51,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 19:55:51,107 INFO L87 Difference]: Start difference. First operand 225 states and 254 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) [2022-11-16 19:55:51,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:55:51,589 INFO L93 Difference]: Finished difference Result 234 states and 263 transitions. [2022-11-16 19:55:51,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 19:55:51,590 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 [2022-11-16 19:55:51,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:55:51,591 INFO L225 Difference]: With dead ends: 234 [2022-11-16 19:55:51,591 INFO L226 Difference]: Without dead ends: 234 [2022-11-16 19:55:51,592 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 [2022-11-16 19:55:51,593 INFO L413 NwaCegarLoop]: 243 mSDtfsCounter, 16 mSDsluCounter, 419 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 662 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-16 19:55:51,593 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 662 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-16 19:55:51,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2022-11-16 19:55:51,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 234. [2022-11-16 19:55:51,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 234 states, 136 states have (on average 1.7720588235294117) internal successors, (241), 219 states have internal predecessors, (241), 11 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2022-11-16 19:55:51,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 263 transitions. [2022-11-16 19:55:51,625 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 263 transitions. Word has length 7 [2022-11-16 19:55:51,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:55:51,628 INFO L495 AbstractCegarLoop]: Abstraction has 234 states and 263 transitions. [2022-11-16 19:55:51,628 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) [2022-11-16 19:55:51,628 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 263 transitions. [2022-11-16 19:55:51,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-11-16 19:55:51,630 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:55:51,631 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] [2022-11-16 19:55:51,648 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_126c6f52-b54d-4b84-864f-424dcc68299d/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-11-16 19:55:51,847 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_126c6f52-b54d-4b84-864f-424dcc68299d/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 19:55:51,848 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting zalloc_or_dieErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 82 more)] === [2022-11-16 19:55:51,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:55:51,848 INFO L85 PathProgramCache]: Analyzing trace with hash -1126435929, now seen corresponding path program 1 times [2022-11-16 19:55:51,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-16 19:55:51,849 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [768853116] [2022-11-16 19:55:51,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:55:51,849 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 19:55:51,850 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_126c6f52-b54d-4b84-864f-424dcc68299d/bin/utaipan-Xvt2sAort0/mathsat [2022-11-16 19:55:51,850 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_126c6f52-b54d-4b84-864f-424dcc68299d/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 19:55:51,857 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_126c6f52-b54d-4b84-864f-424dcc68299d/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-11-16 19:55:52,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:55:52,125 INFO L263 TraceCheckSpWp]: Trace formula consists of 315 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-16 19:55:52,130 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 19:55:52,186 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2022-11-16 19:55:52,186 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 19:55:52,186 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-16 19:55:52,187 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [768853116] [2022-11-16 19:55:52,187 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [768853116] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 19:55:52,187 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 19:55:52,187 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 19:55:52,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162355365] [2022-11-16 19:55:52,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 19:55:52,188 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 19:55:52,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-16 19:55:52,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 19:55:52,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-16 19:55:52,189 INFO L87 Difference]: Start difference. First operand 234 states and 263 transitions. Second operand has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-16 19:55:52,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:55:52,315 INFO L93 Difference]: Finished difference Result 246 states and 275 transitions. [2022-11-16 19:55:52,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 19:55:52,316 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) Word has length 66 [2022-11-16 19:55:52,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:55:52,319 INFO L225 Difference]: With dead ends: 246 [2022-11-16 19:55:52,319 INFO L226 Difference]: Without dead ends: 236 [2022-11-16 19:55:52,319 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-16 19:55:52,322 INFO L413 NwaCegarLoop]: 244 mSDtfsCounter, 14 mSDsluCounter, 706 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 950 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 19:55:52,325 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 950 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 19:55:52,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2022-11-16 19:55:52,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 236. [2022-11-16 19:55:52,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 236 states, 138 states have (on average 1.7608695652173914) internal successors, (243), 221 states have internal predecessors, (243), 11 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2022-11-16 19:55:52,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 265 transitions. [2022-11-16 19:55:52,374 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 265 transitions. Word has length 66 [2022-11-16 19:55:52,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:55:52,375 INFO L495 AbstractCegarLoop]: Abstraction has 236 states and 265 transitions. [2022-11-16 19:55:52,375 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-16 19:55:52,375 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 265 transitions. [2022-11-16 19:55:52,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-11-16 19:55:52,382 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:55:52,383 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] [2022-11-16 19:55:52,398 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_126c6f52-b54d-4b84-864f-424dcc68299d/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-11-16 19:55:52,597 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_126c6f52-b54d-4b84-864f-424dcc68299d/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 19:55:52,598 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting zalloc_or_dieErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 82 more)] === [2022-11-16 19:55:52,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:55:52,599 INFO L85 PathProgramCache]: Analyzing trace with hash -1056190273, now seen corresponding path program 1 times [2022-11-16 19:55:52,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-16 19:55:52,600 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [455087130] [2022-11-16 19:55:52,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:55:52,605 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 19:55:52,605 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_126c6f52-b54d-4b84-864f-424dcc68299d/bin/utaipan-Xvt2sAort0/mathsat [2022-11-16 19:55:52,606 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_126c6f52-b54d-4b84-864f-424dcc68299d/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 19:55:52,612 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_126c6f52-b54d-4b84-864f-424dcc68299d/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-11-16 19:55:52,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:55:52,886 INFO L263 TraceCheckSpWp]: Trace formula consists of 370 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-16 19:55:52,889 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 19:55:52,977 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 51 proven. 1 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2022-11-16 19:55:52,977 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 19:55:53,352 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 15 proven. 45 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2022-11-16 19:55:53,352 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-16 19:55:53,353 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [455087130] [2022-11-16 19:55:53,353 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [455087130] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 19:55:53,353 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [255353416] [2022-11-16 19:55:53,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:55:53,353 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-16 19:55:53,353 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_126c6f52-b54d-4b84-864f-424dcc68299d/bin/utaipan-Xvt2sAort0/cvc4 [2022-11-16 19:55:53,355 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_126c6f52-b54d-4b84-864f-424dcc68299d/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-16 19:55:53,382 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_126c6f52-b54d-4b84-864f-424dcc68299d/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2022-11-16 19:55:53,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:55:53,872 INFO L263 TraceCheckSpWp]: Trace formula consists of 370 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-16 19:55:53,878 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 19:55:53,926 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 51 proven. 1 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2022-11-16 19:55:53,927 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 19:55:54,183 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 15 proven. 45 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2022-11-16 19:55:54,183 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [255353416] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 19:55:54,184 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [469650066] [2022-11-16 19:55:54,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:55:54,184 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 19:55:54,184 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_126c6f52-b54d-4b84-864f-424dcc68299d/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 19:55:54,190 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_126c6f52-b54d-4b84-864f-424dcc68299d/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 19:55:54,216 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_126c6f52-b54d-4b84-864f-424dcc68299d/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-16 19:55:54,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:55:54,459 INFO L263 TraceCheckSpWp]: Trace formula consists of 370 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-16 19:55:54,462 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 19:55:57,739 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 51 proven. 1 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2022-11-16 19:55:57,740 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 19:55:58,412 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 15 proven. 45 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2022-11-16 19:55:58,413 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [469650066] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 19:55:58,413 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-16 19:55:58,413 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6, 6, 6, 6] total 16 [2022-11-16 19:55:58,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044316648] [2022-11-16 19:55:58,414 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-16 19:55:58,415 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-16 19:55:58,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-16 19:55:58,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-16 19:55:58,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=163, Unknown=1, NotChecked=0, Total=240 [2022-11-16 19:55:58,416 INFO L87 Difference]: Start difference. First operand 236 states and 265 transitions. Second operand has 16 states, 16 states have (on average 3.875) internal successors, (62), 16 states have internal predecessors, (62), 2 states have call successors, (10), 2 states have call predecessors, (10), 5 states have return successors, (11), 1 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-16 19:55:59,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:55:59,162 INFO L93 Difference]: Finished difference Result 260 states and 299 transitions. [2022-11-16 19:55:59,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 19:55:59,163 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.875) internal successors, (62), 16 states have internal predecessors, (62), 2 states have call successors, (10), 2 states have call predecessors, (10), 5 states have return successors, (11), 1 states have call predecessors, (11), 2 states have call successors, (11) Word has length 71 [2022-11-16 19:55:59,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:55:59,166 INFO L225 Difference]: With dead ends: 260 [2022-11-16 19:55:59,167 INFO L226 Difference]: Without dead ends: 260 [2022-11-16 19:55:59,167 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 427 GetRequests, 408 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=137, Invalid=282, Unknown=1, NotChecked=0, Total=420 [2022-11-16 19:55:59,168 INFO L413 NwaCegarLoop]: 244 mSDtfsCounter, 89 mSDsluCounter, 1191 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 1435 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 20 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 19:55:59,168 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 1435 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 38 Invalid, 0 Unknown, 20 Unchecked, 0.1s Time] [2022-11-16 19:55:59,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2022-11-16 19:55:59,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 243. [2022-11-16 19:55:59,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 243 states, 144 states have (on average 1.7430555555555556) internal successors, (251), 228 states have internal predecessors, (251), 11 states have call successors, (11), 3 states have call predecessors, (11), 4 states have return successors, (15), 11 states have call predecessors, (15), 11 states have call successors, (15) [2022-11-16 19:55:59,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 277 transitions. [2022-11-16 19:55:59,179 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 277 transitions. Word has length 71 [2022-11-16 19:55:59,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:55:59,180 INFO L495 AbstractCegarLoop]: Abstraction has 243 states and 277 transitions. [2022-11-16 19:55:59,180 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.875) internal successors, (62), 16 states have internal predecessors, (62), 2 states have call successors, (10), 2 states have call predecessors, (10), 5 states have return successors, (11), 1 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-16 19:55:59,180 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 277 transitions. [2022-11-16 19:55:59,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-11-16 19:55:59,181 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:55:59,182 INFO L195 NwaCegarLoop]: trace histogram [7, 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] [2022-11-16 19:55:59,196 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_126c6f52-b54d-4b84-864f-424dcc68299d/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt (7)] Forceful destruction successful, exit code 0 [2022-11-16 19:55:59,407 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_126c6f52-b54d-4b84-864f-424dcc68299d/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-11-16 19:55:59,604 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_126c6f52-b54d-4b84-864f-424dcc68299d/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-11-16 19:55:59,796 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_126c6f52-b54d-4b84-864f-424dcc68299d/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_126c6f52-b54d-4b84-864f-424dcc68299d/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_126c6f52-b54d-4b84-864f-424dcc68299d/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 19:55:59,797 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting zalloc_or_dieErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 82 more)] === [2022-11-16 19:55:59,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:55:59,798 INFO L85 PathProgramCache]: Analyzing trace with hash 580170047, now seen corresponding path program 2 times [2022-11-16 19:55:59,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-16 19:55:59,799 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [11210771] [2022-11-16 19:55:59,799 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 19:55:59,799 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 19:55:59,799 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_126c6f52-b54d-4b84-864f-424dcc68299d/bin/utaipan-Xvt2sAort0/mathsat [2022-11-16 19:55:59,800 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_126c6f52-b54d-4b84-864f-424dcc68299d/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 19:55:59,814 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_126c6f52-b54d-4b84-864f-424dcc68299d/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-11-16 19:55:59,962 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-16 19:55:59,963 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 19:55:59,966 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-16 19:55:59,969 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 19:56:00,028 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-16 19:56:00,314 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2022-11-16 19:56:00,314 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 19:56:00,315 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-16 19:56:00,315 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [11210771] [2022-11-16 19:56:00,315 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [11210771] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 19:56:00,315 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 19:56:00,315 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 19:56:00,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218329195] [2022-11-16 19:56:00,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 19:56:00,316 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 19:56:00,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-16 19:56:00,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 19:56:00,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 19:56:00,317 INFO L87 Difference]: Start difference. First operand 243 states and 277 transitions. Second operand has 3 states, 2 states have (on average 12.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-11-16 19:56:00,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:56:00,325 INFO L93 Difference]: Finished difference Result 242 states and 276 transitions. [2022-11-16 19:56:00,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 19:56:00,325 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 12.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (6), 1 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 73 [2022-11-16 19:56:00,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:56:00,327 INFO L225 Difference]: With dead ends: 242 [2022-11-16 19:56:00,327 INFO L226 Difference]: Without dead ends: 242 [2022-11-16 19:56:00,327 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 19:56:00,328 INFO L413 NwaCegarLoop]: 251 mSDtfsCounter, 0 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 433 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 70 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 19:56:00,328 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 433 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 70 Unchecked, 0.0s Time] [2022-11-16 19:56:00,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2022-11-16 19:56:00,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 242. [2022-11-16 19:56:00,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 242 states, 144 states have (on average 1.7361111111111112) internal successors, (250), 227 states have internal predecessors, (250), 11 states have call successors, (11), 3 states have call predecessors, (11), 4 states have return successors, (15), 11 states have call predecessors, (15), 11 states have call successors, (15) [2022-11-16 19:56:00,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 276 transitions. [2022-11-16 19:56:00,337 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 276 transitions. Word has length 73 [2022-11-16 19:56:00,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:56:00,338 INFO L495 AbstractCegarLoop]: Abstraction has 242 states and 276 transitions. [2022-11-16 19:56:00,338 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 12.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-11-16 19:56:00,339 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 276 transitions. [2022-11-16 19:56:00,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-11-16 19:56:00,340 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:56:00,340 INFO L195 NwaCegarLoop]: trace histogram [8, 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] [2022-11-16 19:56:00,360 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_126c6f52-b54d-4b84-864f-424dcc68299d/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-11-16 19:56:00,551 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_126c6f52-b54d-4b84-864f-424dcc68299d/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 19:56:00,553 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 82 more)] === [2022-11-16 19:56:00,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:56:00,554 INFO L85 PathProgramCache]: Analyzing trace with hash -1461601204, now seen corresponding path program 1 times [2022-11-16 19:56:00,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-16 19:56:00,555 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2064905399] [2022-11-16 19:56:00,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:56:00,555 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 19:56:00,555 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_126c6f52-b54d-4b84-864f-424dcc68299d/bin/utaipan-Xvt2sAort0/mathsat [2022-11-16 19:56:00,556 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_126c6f52-b54d-4b84-864f-424dcc68299d/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 19:56:00,558 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_126c6f52-b54d-4b84-864f-424dcc68299d/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-11-16 19:56:00,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:56:00,838 INFO L263 TraceCheckSpWp]: Trace formula consists of 421 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-16 19:56:00,840 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 19:56:01,065 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 80 proven. 6 refuted. 0 times theorem prover too weak. 125 trivial. 0 not checked. [2022-11-16 19:56:01,065 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 19:56:01,824 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2022-11-16 19:56:01,825 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-16 19:56:01,825 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2064905399] [2022-11-16 19:56:01,825 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2064905399] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 19:56:01,825 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1398436407] [2022-11-16 19:56:01,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:56:01,825 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-16 19:56:01,826 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_126c6f52-b54d-4b84-864f-424dcc68299d/bin/utaipan-Xvt2sAort0/cvc4 [2022-11-16 19:56:01,827 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_126c6f52-b54d-4b84-864f-424dcc68299d/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-16 19:56:01,864 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_126c6f52-b54d-4b84-864f-424dcc68299d/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt (11)] Waiting until timeout for monitored process [2022-11-16 19:56:02,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:56:02,409 INFO L263 TraceCheckSpWp]: Trace formula consists of 421 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-16 19:56:02,413 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 19:56:02,513 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 80 proven. 6 refuted. 0 times theorem prover too weak. 125 trivial. 0 not checked. [2022-11-16 19:56:02,513 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 19:56:02,864 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2022-11-16 19:56:02,865 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1398436407] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 19:56:02,865 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [73806763] [2022-11-16 19:56:02,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:56:02,865 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 19:56:02,865 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_126c6f52-b54d-4b84-864f-424dcc68299d/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 19:56:02,867 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_126c6f52-b54d-4b84-864f-424dcc68299d/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 19:56:02,887 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_126c6f52-b54d-4b84-864f-424dcc68299d/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-16 19:56:03,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:56:03,164 INFO L263 TraceCheckSpWp]: Trace formula consists of 421 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-16 19:56:03,167 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 19:56:06,702 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 127 proven. 1 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2022-11-16 19:56:06,703 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 19:56:07,369 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 15 proven. 45 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2022-11-16 19:56:07,369 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [73806763] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 19:56:07,369 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-16 19:56:07,369 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8, 8, 6, 6] total 20 [2022-11-16 19:56:07,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122207475] [2022-11-16 19:56:07,370 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-16 19:56:07,371 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-16 19:56:07,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-16 19:56:07,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-16 19:56:07,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=265, Unknown=1, NotChecked=0, Total=380 [2022-11-16 19:56:07,372 INFO L87 Difference]: Start difference. First operand 242 states and 276 transitions. Second operand has 20 states, 20 states have (on average 3.4) internal successors, (68), 20 states have internal predecessors, (68), 2 states have call successors, (12), 2 states have call predecessors, (12), 5 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-16 19:56:09,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:56:09,086 INFO L93 Difference]: Finished difference Result 287 states and 325 transitions. [2022-11-16 19:56:09,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-16 19:56:09,087 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.4) internal successors, (68), 20 states have internal predecessors, (68), 2 states have call successors, (12), 2 states have call predecessors, (12), 5 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 81 [2022-11-16 19:56:09,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:56:09,089 INFO L225 Difference]: With dead ends: 287 [2022-11-16 19:56:09,089 INFO L226 Difference]: Without dead ends: 262 [2022-11-16 19:56:09,089 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 490 GetRequests, 462 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 194 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=282, Invalid=587, Unknown=1, NotChecked=0, Total=870 [2022-11-16 19:56:09,090 INFO L413 NwaCegarLoop]: 252 mSDtfsCounter, 125 mSDsluCounter, 1700 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 1952 SdHoareTripleChecker+Invalid, 212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 50 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-16 19:56:09,090 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [125 Valid, 1952 Invalid, 212 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 130 Invalid, 0 Unknown, 50 Unchecked, 0.6s Time] [2022-11-16 19:56:09,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2022-11-16 19:56:09,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 249. [2022-11-16 19:56:09,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 249 states, 151 states have (on average 1.7019867549668874) internal successors, (257), 234 states have internal predecessors, (257), 11 states have call successors, (11), 3 states have call predecessors, (11), 4 states have return successors, (14), 11 states have call predecessors, (14), 11 states have call successors, (14) [2022-11-16 19:56:09,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 282 transitions. [2022-11-16 19:56:09,107 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 282 transitions. Word has length 81 [2022-11-16 19:56:09,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:56:09,108 INFO L495 AbstractCegarLoop]: Abstraction has 249 states and 282 transitions. [2022-11-16 19:56:09,108 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.4) internal successors, (68), 20 states have internal predecessors, (68), 2 states have call successors, (12), 2 states have call predecessors, (12), 5 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-16 19:56:09,108 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 282 transitions. [2022-11-16 19:56:09,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-11-16 19:56:09,116 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:56:09,116 INFO L195 NwaCegarLoop]: trace histogram [18, 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] [2022-11-16 19:56:09,139 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_126c6f52-b54d-4b84-864f-424dcc68299d/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-11-16 19:56:09,341 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_126c6f52-b54d-4b84-864f-424dcc68299d/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-16 19:56:09,535 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_126c6f52-b54d-4b84-864f-424dcc68299d/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt (11)] Forceful destruction successful, exit code 0 [2022-11-16 19:56:09,732 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_126c6f52-b54d-4b84-864f-424dcc68299d/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_126c6f52-b54d-4b84-864f-424dcc68299d/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_126c6f52-b54d-4b84-864f-424dcc68299d/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt [2022-11-16 19:56:09,732 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 82 more)] === [2022-11-16 19:56:09,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:56:09,733 INFO L85 PathProgramCache]: Analyzing trace with hash 1848488972, now seen corresponding path program 2 times [2022-11-16 19:56:09,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-16 19:56:09,734 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [934188533] [2022-11-16 19:56:09,734 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 19:56:09,734 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 19:56:09,734 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_126c6f52-b54d-4b84-864f-424dcc68299d/bin/utaipan-Xvt2sAort0/mathsat [2022-11-16 19:56:09,735 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_126c6f52-b54d-4b84-864f-424dcc68299d/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 19:56:09,741 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_126c6f52-b54d-4b84-864f-424dcc68299d/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-11-16 19:56:10,103 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 19:56:10,103 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 19:56:10,123 INFO L263 TraceCheckSpWp]: Trace formula consists of 531 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-16 19:56:10,125 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 19:56:10,581 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 168 proven. 28 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked. [2022-11-16 19:56:10,581 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 19:56:11,977 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 191 refuted. 0 times theorem prover too weak. 205 trivial. 0 not checked. [2022-11-16 19:56:11,978 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-16 19:56:11,978 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [934188533] [2022-11-16 19:56:11,978 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [934188533] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 19:56:11,978 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [675270604] [2022-11-16 19:56:11,979 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 19:56:11,979 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-16 19:56:11,979 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_126c6f52-b54d-4b84-864f-424dcc68299d/bin/utaipan-Xvt2sAort0/cvc4 [2022-11-16 19:56:11,984 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_126c6f52-b54d-4b84-864f-424dcc68299d/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-16 19:56:12,009 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_126c6f52-b54d-4b84-864f-424dcc68299d/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt (14)] Waiting until timeout for monitored process [2022-11-16 19:56:12,617 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 19:56:12,617 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 19:56:12,624 INFO L263 TraceCheckSpWp]: Trace formula consists of 531 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-16 19:56:12,627 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 19:56:12,752 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 168 proven. 28 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked. [2022-11-16 19:56:12,752 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 19:56:13,345 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 191 refuted. 0 times theorem prover too weak. 205 trivial. 0 not checked. [2022-11-16 19:56:13,346 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [675270604] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 19:56:13,346 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1086442348] [2022-11-16 19:56:13,346 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 19:56:13,346 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 19:56:13,346 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_126c6f52-b54d-4b84-864f-424dcc68299d/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 19:56:13,351 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_126c6f52-b54d-4b84-864f-424dcc68299d/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 19:56:13,374 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_126c6f52-b54d-4b84-864f-424dcc68299d/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-16 19:56:13,692 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 19:56:13,692 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 19:56:13,713 INFO L263 TraceCheckSpWp]: Trace formula consists of 531 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-16 19:56:13,716 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 19:56:17,083 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 226 proven. 1 refuted. 0 times theorem prover too weak. 169 trivial. 0 not checked. [2022-11-16 19:56:17,083 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 19:56:17,997 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 46 proven. 34 refuted. 0 times theorem prover too weak. 316 trivial. 0 not checked. [2022-11-16 19:56:17,998 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1086442348] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 19:56:17,998 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-16 19:56:17,998 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12, 12, 6, 6] total 28 [2022-11-16 19:56:17,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420206190] [2022-11-16 19:56:17,999 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-16 19:56:17,999 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-11-16 19:56:17,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-16 19:56:18,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-11-16 19:56:18,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=184, Invalid=571, Unknown=1, NotChecked=0, Total=756 [2022-11-16 19:56:18,001 INFO L87 Difference]: Start difference. First operand 249 states and 282 transitions. Second operand has 28 states, 28 states have (on average 2.7857142857142856) internal successors, (78), 28 states have internal predecessors, (78), 2 states have call successors, (13), 2 states have call predecessors, (13), 5 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-16 19:56:23,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:56:23,089 INFO L93 Difference]: Finished difference Result 298 states and 337 transitions. [2022-11-16 19:56:23,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-16 19:56:23,090 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 2.7857142857142856) internal successors, (78), 28 states have internal predecessors, (78), 2 states have call successors, (13), 2 states have call predecessors, (13), 5 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 91 [2022-11-16 19:56:23,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:56:23,092 INFO L225 Difference]: With dead ends: 298 [2022-11-16 19:56:23,092 INFO L226 Difference]: Without dead ends: 278 [2022-11-16 19:56:23,093 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 553 GetRequests, 517 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 321 ImplicationChecksByTransitivity, 8.2s TimeCoverageRelationStatistics Valid=373, Invalid=1031, Unknown=2, NotChecked=0, Total=1406 [2022-11-16 19:56:23,094 INFO L413 NwaCegarLoop]: 260 mSDtfsCounter, 192 mSDsluCounter, 2564 mSDsCounter, 0 mSdLazyCounter, 251 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 192 SdHoareTripleChecker+Valid, 2824 SdHoareTripleChecker+Invalid, 318 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 251 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 23 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-16 19:56:23,094 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [192 Valid, 2824 Invalid, 318 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 251 Invalid, 0 Unknown, 23 Unchecked, 1.1s Time] [2022-11-16 19:56:23,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2022-11-16 19:56:23,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 261. [2022-11-16 19:56:23,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 261 states, 162 states have (on average 1.6728395061728396) internal successors, (271), 246 states have internal predecessors, (271), 11 states have call successors, (11), 3 states have call predecessors, (11), 5 states have return successors, (16), 11 states have call predecessors, (16), 11 states have call successors, (16) [2022-11-16 19:56:23,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 298 transitions. [2022-11-16 19:56:23,104 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 298 transitions. Word has length 91 [2022-11-16 19:56:23,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:56:23,105 INFO L495 AbstractCegarLoop]: Abstraction has 261 states and 298 transitions. [2022-11-16 19:56:23,105 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 2.7857142857142856) internal successors, (78), 28 states have internal predecessors, (78), 2 states have call successors, (13), 2 states have call predecessors, (13), 5 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-16 19:56:23,105 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 298 transitions. [2022-11-16 19:56:23,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-11-16 19:56:23,106 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:56:23,106 INFO L195 NwaCegarLoop]: trace histogram [27, 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] [2022-11-16 19:56:23,142 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_126c6f52-b54d-4b84-864f-424dcc68299d/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2022-11-16 19:56:23,340 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_126c6f52-b54d-4b84-864f-424dcc68299d/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt (14)] Forceful destruction successful, exit code 0 [2022-11-16 19:56:23,547 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_126c6f52-b54d-4b84-864f-424dcc68299d/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-11-16 19:56:23,736 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_126c6f52-b54d-4b84-864f-424dcc68299d/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_126c6f52-b54d-4b84-864f-424dcc68299d/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_126c6f52-b54d-4b84-864f-424dcc68299d/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 19:56:23,736 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 82 more)] === [2022-11-16 19:56:23,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:56:23,737 INFO L85 PathProgramCache]: Analyzing trace with hash -742971774, now seen corresponding path program 3 times [2022-11-16 19:56:23,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-16 19:56:23,738 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [167457452] [2022-11-16 19:56:23,738 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-16 19:56:23,738 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 19:56:23,738 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_126c6f52-b54d-4b84-864f-424dcc68299d/bin/utaipan-Xvt2sAort0/mathsat [2022-11-16 19:56:23,739 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_126c6f52-b54d-4b84-864f-424dcc68299d/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 19:56:23,781 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_126c6f52-b54d-4b84-864f-424dcc68299d/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2022-11-16 19:56:23,950 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-16 19:56:23,950 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 19:56:23,956 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-16 19:56:23,958 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 19:56:24,085 INFO L134 CoverageAnalysis]: Checked inductivity of 648 backedges. 97 proven. 1 refuted. 0 times theorem prover too weak. 550 trivial. 0 not checked. [2022-11-16 19:56:24,085 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 19:56:24,560 INFO L134 CoverageAnalysis]: Checked inductivity of 648 backedges. 97 proven. 1 refuted. 0 times theorem prover too weak. 550 trivial. 0 not checked. [2022-11-16 19:56:24,560 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-16 19:56:24,561 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [167457452] [2022-11-16 19:56:24,561 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [167457452] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 19:56:24,561 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1224137958] [2022-11-16 19:56:24,561 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-16 19:56:24,561 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-16 19:56:24,561 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_126c6f52-b54d-4b84-864f-424dcc68299d/bin/utaipan-Xvt2sAort0/cvc4 [2022-11-16 19:56:24,563 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_126c6f52-b54d-4b84-864f-424dcc68299d/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-16 19:56:24,586 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_126c6f52-b54d-4b84-864f-424dcc68299d/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt (17)] Waiting until timeout for monitored process [2022-11-16 19:56:24,932 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-16 19:56:24,933 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 19:56:24,935 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-16 19:56:24,938 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 19:56:25,002 INFO L134 CoverageAnalysis]: Checked inductivity of 648 backedges. 97 proven. 1 refuted. 0 times theorem prover too weak. 550 trivial. 0 not checked. [2022-11-16 19:56:25,002 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 19:56:25,364 INFO L134 CoverageAnalysis]: Checked inductivity of 648 backedges. 97 proven. 1 refuted. 0 times theorem prover too weak. 550 trivial. 0 not checked. [2022-11-16 19:56:25,364 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1224137958] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 19:56:25,364 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1440162351] [2022-11-16 19:56:25,365 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-16 19:56:25,365 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 19:56:25,365 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_126c6f52-b54d-4b84-864f-424dcc68299d/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 19:56:25,366 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_126c6f52-b54d-4b84-864f-424dcc68299d/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 19:56:25,394 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_126c6f52-b54d-4b84-864f-424dcc68299d/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-11-16 19:56:25,606 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-16 19:56:25,606 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 19:56:25,611 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-16 19:56:25,613 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 19:56:25,673 INFO L134 CoverageAnalysis]: Checked inductivity of 648 backedges. 97 proven. 1 refuted. 0 times theorem prover too weak. 550 trivial. 0 not checked. [2022-11-16 19:56:25,673 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 19:56:25,952 INFO L134 CoverageAnalysis]: Checked inductivity of 648 backedges. 97 proven. 1 refuted. 0 times theorem prover too weak. 550 trivial. 0 not checked. [2022-11-16 19:56:25,952 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1440162351] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 19:56:25,953 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-16 19:56:25,953 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6, 6, 6, 6] total 10 [2022-11-16 19:56:25,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022145428] [2022-11-16 19:56:25,953 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-16 19:56:25,954 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 19:56:25,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-16 19:56:25,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 19:56:25,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2022-11-16 19:56:25,955 INFO L87 Difference]: Start difference. First operand 261 states and 298 transitions. Second operand has 10 states, 10 states have (on average 4.0) internal successors, (40), 10 states have internal predecessors, (40), 1 states have call successors, (6), 1 states have call predecessors, (6), 3 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2022-11-16 19:56:26,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:56:26,435 INFO L93 Difference]: Finished difference Result 266 states and 300 transitions. [2022-11-16 19:56:26,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-16 19:56:26,451 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.0) internal successors, (40), 10 states have internal predecessors, (40), 1 states have call successors, (6), 1 states have call predecessors, (6), 3 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) Word has length 100 [2022-11-16 19:56:26,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:56:26,452 INFO L225 Difference]: With dead ends: 266 [2022-11-16 19:56:26,453 INFO L226 Difference]: Without dead ends: 256 [2022-11-16 19:56:26,453 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 600 GetRequests, 586 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=93, Invalid=147, Unknown=0, NotChecked=0, Total=240 [2022-11-16 19:56:26,454 INFO L413 NwaCegarLoop]: 243 mSDtfsCounter, 86 mSDsluCounter, 721 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 964 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-16 19:56:26,458 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 964 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-16 19:56:26,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2022-11-16 19:56:26,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 256. [2022-11-16 19:56:26,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 256 states, 158 states have (on average 1.6772151898734178) internal successors, (265), 241 states have internal predecessors, (265), 11 states have call successors, (11), 3 states have call predecessors, (11), 4 states have return successors, (14), 11 states have call predecessors, (14), 11 states have call successors, (14) [2022-11-16 19:56:26,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 290 transitions. [2022-11-16 19:56:26,470 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 290 transitions. Word has length 100 [2022-11-16 19:56:26,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:56:26,471 INFO L495 AbstractCegarLoop]: Abstraction has 256 states and 290 transitions. [2022-11-16 19:56:26,471 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.0) internal successors, (40), 10 states have internal predecessors, (40), 1 states have call successors, (6), 1 states have call predecessors, (6), 3 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2022-11-16 19:56:26,472 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 290 transitions. [2022-11-16 19:56:26,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-11-16 19:56:26,473 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:56:26,473 INFO L195 NwaCegarLoop]: trace histogram [44, 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] [2022-11-16 19:56:26,485 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_126c6f52-b54d-4b84-864f-424dcc68299d/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2022-11-16 19:56:26,688 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_126c6f52-b54d-4b84-864f-424dcc68299d/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt (17)] Forceful destruction successful, exit code 0 [2022-11-16 19:56:26,891 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_126c6f52-b54d-4b84-864f-424dcc68299d/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-11-16 19:56:27,085 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_126c6f52-b54d-4b84-864f-424dcc68299d/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_126c6f52-b54d-4b84-864f-424dcc68299d/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_126c6f52-b54d-4b84-864f-424dcc68299d/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 19:56:27,086 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 82 more)] === [2022-11-16 19:56:27,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:56:27,086 INFO L85 PathProgramCache]: Analyzing trace with hash -769440470, now seen corresponding path program 4 times [2022-11-16 19:56:27,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-16 19:56:27,087 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [919983405] [2022-11-16 19:56:27,087 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-16 19:56:27,087 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 19:56:27,087 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_126c6f52-b54d-4b84-864f-424dcc68299d/bin/utaipan-Xvt2sAort0/mathsat [2022-11-16 19:56:27,088 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_126c6f52-b54d-4b84-864f-424dcc68299d/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 19:56:27,089 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_126c6f52-b54d-4b84-864f-424dcc68299d/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2022-11-16 19:56:28,242 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-16 19:56:28,242 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 19:56:28,276 INFO L263 TraceCheckSpWp]: Trace formula consists of 817 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-16 19:56:28,278 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 19:56:28,513 INFO L134 CoverageAnalysis]: Checked inductivity of 1345 backedges. 260 proven. 10 refuted. 0 times theorem prover too weak. 1075 trivial. 0 not checked. [2022-11-16 19:56:28,514 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 19:56:29,345 INFO L134 CoverageAnalysis]: Checked inductivity of 1345 backedges. 260 proven. 10 refuted. 0 times theorem prover too weak. 1075 trivial. 0 not checked. [2022-11-16 19:56:29,345 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-16 19:56:29,345 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [919983405] [2022-11-16 19:56:29,345 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [919983405] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 19:56:29,346 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [447117222] [2022-11-16 19:56:29,346 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-16 19:56:29,346 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-16 19:56:29,346 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_126c6f52-b54d-4b84-864f-424dcc68299d/bin/utaipan-Xvt2sAort0/cvc4 [2022-11-16 19:56:29,347 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_126c6f52-b54d-4b84-864f-424dcc68299d/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-16 19:56:29,348 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_126c6f52-b54d-4b84-864f-424dcc68299d/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt (20)] Waiting until timeout for monitored process [2022-11-16 19:56:30,519 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-16 19:56:30,519 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 19:56:30,553 INFO L263 TraceCheckSpWp]: Trace formula consists of 817 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-16 19:56:30,555 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 19:56:30,635 INFO L134 CoverageAnalysis]: Checked inductivity of 1345 backedges. 260 proven. 10 refuted. 0 times theorem prover too weak. 1075 trivial. 0 not checked. [2022-11-16 19:56:30,635 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 19:56:31,003 INFO L134 CoverageAnalysis]: Checked inductivity of 1345 backedges. 260 proven. 10 refuted. 0 times theorem prover too weak. 1075 trivial. 0 not checked. [2022-11-16 19:56:31,003 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [447117222] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 19:56:31,003 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2106464763] [2022-11-16 19:56:31,003 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-16 19:56:31,004 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 19:56:31,004 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_126c6f52-b54d-4b84-864f-424dcc68299d/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 19:56:31,009 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_126c6f52-b54d-4b84-864f-424dcc68299d/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 19:56:31,030 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_126c6f52-b54d-4b84-864f-424dcc68299d/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-11-16 19:56:31,528 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-16 19:56:31,528 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 19:56:31,555 INFO L263 TraceCheckSpWp]: Trace formula consists of 817 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-16 19:56:31,562 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 19:56:31,573 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-16 19:56:32,213 WARN L855 $PredicateComparison]: unable to prove that (exists ((|zalloc_or_die_calloc_model_~ptr~0#1.base| (_ BitVec 32))) (and (= (select |c_old(#valid)| |zalloc_or_die_calloc_model_~ptr~0#1.base|) (_ bv0 1)) (exists ((v_ArrVal_2091 (_ BitVec 1))) (= (store |c_old(#valid)| |zalloc_or_die_calloc_model_~ptr~0#1.base| v_ArrVal_2091) |c_#valid|)))) is different from true [2022-11-16 19:56:32,454 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-16 19:56:32,454 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2022-11-16 19:56:32,468 INFO L134 CoverageAnalysis]: Checked inductivity of 1345 backedges. 565 proven. 0 refuted. 0 times theorem prover too weak. 728 trivial. 52 not checked. [2022-11-16 19:56:32,468 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 19:56:33,370 INFO L134 CoverageAnalysis]: Checked inductivity of 1345 backedges. 565 proven. 52 refuted. 0 times theorem prover too weak. 728 trivial. 0 not checked. [2022-11-16 19:56:33,370 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2106464763] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 19:56:33,370 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-16 19:56:33,371 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9, 9, 9, 8] total 25 [2022-11-16 19:56:33,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482477611] [2022-11-16 19:56:33,371 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-16 19:56:33,372 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-11-16 19:56:33,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-16 19:56:33,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-11-16 19:56:33,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=458, Unknown=1, NotChecked=44, Total=600 [2022-11-16 19:56:33,373 INFO L87 Difference]: Start difference. First operand 256 states and 290 transitions. Second operand has 25 states, 25 states have (on average 3.0) internal successors, (75), 23 states have internal predecessors, (75), 2 states have call successors, (8), 3 states have call predecessors, (8), 6 states have return successors, (10), 4 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-16 19:56:40,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:56:40,963 INFO L93 Difference]: Finished difference Result 274 states and 313 transitions. [2022-11-16 19:56:40,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-11-16 19:56:40,964 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.0) internal successors, (75), 23 states have internal predecessors, (75), 2 states have call successors, (8), 3 states have call predecessors, (8), 6 states have return successors, (10), 4 states have call predecessors, (10), 2 states have call successors, (10) Word has length 117 [2022-11-16 19:56:40,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:56:40,966 INFO L225 Difference]: With dead ends: 274 [2022-11-16 19:56:40,966 INFO L226 Difference]: Without dead ends: 264 [2022-11-16 19:56:40,967 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 729 GetRequests, 673 SyntacticMatches, 2 SemanticMatches, 54 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 701 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=479, Invalid=2494, Unknown=1, NotChecked=106, Total=3080 [2022-11-16 19:56:40,968 INFO L413 NwaCegarLoop]: 212 mSDtfsCounter, 146 mSDsluCounter, 2688 mSDsCounter, 0 mSdLazyCounter, 1153 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 2900 SdHoareTripleChecker+Invalid, 1540 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 1153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 381 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2022-11-16 19:56:40,968 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [146 Valid, 2900 Invalid, 1540 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 1153 Invalid, 0 Unknown, 381 Unchecked, 3.9s Time] [2022-11-16 19:56:40,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2022-11-16 19:56:40,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 255. [2022-11-16 19:56:40,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255 states, 159 states have (on average 1.6540880503144655) internal successors, (263), 240 states have internal predecessors, (263), 11 states have call successors, (11), 3 states have call predecessors, (11), 4 states have return successors, (14), 11 states have call predecessors, (14), 11 states have call successors, (14) [2022-11-16 19:56:40,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 288 transitions. [2022-11-16 19:56:40,979 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 288 transitions. Word has length 117 [2022-11-16 19:56:40,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:56:40,980 INFO L495 AbstractCegarLoop]: Abstraction has 255 states and 288 transitions. [2022-11-16 19:56:40,981 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.0) internal successors, (75), 23 states have internal predecessors, (75), 2 states have call successors, (8), 3 states have call predecessors, (8), 6 states have return successors, (10), 4 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-16 19:56:40,981 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 288 transitions. [2022-11-16 19:56:40,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-11-16 19:56:40,985 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:56:40,985 INFO L195 NwaCegarLoop]: trace histogram [49, 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] [2022-11-16 19:56:41,008 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_126c6f52-b54d-4b84-864f-424dcc68299d/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-11-16 19:56:41,212 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_126c6f52-b54d-4b84-864f-424dcc68299d/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt (20)] Forceful destruction successful, exit code 0 [2022-11-16 19:56:41,413 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_126c6f52-b54d-4b84-864f-424dcc68299d/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2022-11-16 19:56:41,599 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_126c6f52-b54d-4b84-864f-424dcc68299d/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_126c6f52-b54d-4b84-864f-424dcc68299d/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_126c6f52-b54d-4b84-864f-424dcc68299d/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 19:56:41,600 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 82 more)] === [2022-11-16 19:56:41,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:56:41,600 INFO L85 PathProgramCache]: Analyzing trace with hash 1816694197, now seen corresponding path program 1 times [2022-11-16 19:56:41,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-16 19:56:41,601 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1961542225] [2022-11-16 19:56:41,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:56:41,601 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 19:56:41,601 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_126c6f52-b54d-4b84-864f-424dcc68299d/bin/utaipan-Xvt2sAort0/mathsat [2022-11-16 19:56:41,603 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_126c6f52-b54d-4b84-864f-424dcc68299d/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 19:56:41,608 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_126c6f52-b54d-4b84-864f-424dcc68299d/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2022-11-16 19:56:42,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:56:42,862 INFO L263 TraceCheckSpWp]: Trace formula consists of 872 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-16 19:56:42,865 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 19:56:43,432 INFO L134 CoverageAnalysis]: Checked inductivity of 1605 backedges. 485 proven. 45 refuted. 0 times theorem prover too weak. 1075 trivial. 0 not checked. [2022-11-16 19:56:43,432 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 19:56:45,022 INFO L134 CoverageAnalysis]: Checked inductivity of 1605 backedges. 485 proven. 45 refuted. 0 times theorem prover too weak. 1075 trivial. 0 not checked. [2022-11-16 19:56:45,022 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-16 19:56:45,022 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1961542225] [2022-11-16 19:56:45,023 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1961542225] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 19:56:45,023 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1669502010] [2022-11-16 19:56:45,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:56:45,023 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-16 19:56:45,023 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_126c6f52-b54d-4b84-864f-424dcc68299d/bin/utaipan-Xvt2sAort0/cvc4 [2022-11-16 19:56:45,027 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_126c6f52-b54d-4b84-864f-424dcc68299d/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-16 19:56:45,050 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_126c6f52-b54d-4b84-864f-424dcc68299d/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt (23)] Waiting until timeout for monitored process [2022-11-16 19:56:46,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:56:46,510 INFO L263 TraceCheckSpWp]: Trace formula consists of 872 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-16 19:56:46,512 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 19:56:46,664 INFO L134 CoverageAnalysis]: Checked inductivity of 1605 backedges. 485 proven. 45 refuted. 0 times theorem prover too weak. 1075 trivial. 0 not checked. [2022-11-16 19:56:46,664 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 19:56:47,189 INFO L134 CoverageAnalysis]: Checked inductivity of 1605 backedges. 485 proven. 45 refuted. 0 times theorem prover too weak. 1075 trivial. 0 not checked. [2022-11-16 19:56:47,189 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1669502010] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 19:56:47,189 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [802465003] [2022-11-16 19:56:47,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:56:47,189 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 19:56:47,189 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_126c6f52-b54d-4b84-864f-424dcc68299d/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 19:56:47,190 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_126c6f52-b54d-4b84-864f-424dcc68299d/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 19:56:47,193 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_126c6f52-b54d-4b84-864f-424dcc68299d/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-11-16 19:56:47,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:56:47,765 INFO L263 TraceCheckSpWp]: Trace formula consists of 872 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-16 19:56:47,767 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 19:56:48,043 INFO L134 CoverageAnalysis]: Checked inductivity of 1605 backedges. 485 proven. 45 refuted. 0 times theorem prover too weak. 1075 trivial. 0 not checked. [2022-11-16 19:56:48,043 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 19:56:50,600 INFO L134 CoverageAnalysis]: Checked inductivity of 1605 backedges. 485 proven. 45 refuted. 0 times theorem prover too weak. 1075 trivial. 0 not checked. [2022-11-16 19:56:50,601 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [802465003] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 19:56:50,601 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-16 19:56:50,601 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14, 14, 14, 14] total 38 [2022-11-16 19:56:50,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043130268] [2022-11-16 19:56:50,601 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-16 19:56:50,602 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-11-16 19:56:50,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-16 19:56:50,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-11-16 19:56:50,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=394, Invalid=1012, Unknown=0, NotChecked=0, Total=1406 [2022-11-16 19:56:50,604 INFO L87 Difference]: Start difference. First operand 255 states and 288 transitions. Second operand has 38 states, 38 states have (on average 1.9473684210526316) internal successors, (74), 38 states have internal predecessors, (74), 1 states have call successors, (6), 1 states have call predecessors, (6), 4 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) [2022-11-16 19:56:55,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:56:55,986 INFO L93 Difference]: Finished difference Result 275 states and 312 transitions. [2022-11-16 19:56:55,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-11-16 19:56:55,987 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 1.9473684210526316) internal successors, (74), 38 states have internal predecessors, (74), 1 states have call successors, (6), 1 states have call predecessors, (6), 4 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) Word has length 122 [2022-11-16 19:56:55,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:56:55,989 INFO L225 Difference]: With dead ends: 275 [2022-11-16 19:56:55,989 INFO L226 Difference]: Without dead ends: 259 [2022-11-16 19:56:55,990 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 749 GetRequests, 690 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 818 ImplicationChecksByTransitivity, 6.9s TimeCoverageRelationStatistics Valid=1201, Invalid=2459, Unknown=0, NotChecked=0, Total=3660 [2022-11-16 19:56:55,990 INFO L413 NwaCegarLoop]: 245 mSDtfsCounter, 443 mSDsluCounter, 4054 mSDsCounter, 0 mSdLazyCounter, 373 mSolverCounterSat, 202 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 443 SdHoareTripleChecker+Valid, 4299 SdHoareTripleChecker+Invalid, 575 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 202 IncrementalHoareTripleChecker+Valid, 373 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-11-16 19:56:55,991 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [443 Valid, 4299 Invalid, 575 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [202 Valid, 373 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-11-16 19:56:55,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2022-11-16 19:56:55,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 259. [2022-11-16 19:56:55,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 259 states, 164 states have (on average 1.6158536585365855) internal successors, (265), 244 states have internal predecessors, (265), 11 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2022-11-16 19:56:55,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 287 transitions. [2022-11-16 19:56:55,999 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 287 transitions. Word has length 122 [2022-11-16 19:56:55,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:56:56,000 INFO L495 AbstractCegarLoop]: Abstraction has 259 states and 287 transitions. [2022-11-16 19:56:56,000 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 1.9473684210526316) internal successors, (74), 38 states have internal predecessors, (74), 1 states have call successors, (6), 1 states have call predecessors, (6), 4 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) [2022-11-16 19:56:56,000 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 287 transitions. [2022-11-16 19:56:56,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-11-16 19:56:56,002 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:56:56,002 INFO L195 NwaCegarLoop]: trace histogram [60, 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] [2022-11-16 19:56:56,026 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_126c6f52-b54d-4b84-864f-424dcc68299d/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt (23)] Forceful destruction successful, exit code 0 [2022-11-16 19:56:56,238 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_126c6f52-b54d-4b84-864f-424dcc68299d/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2022-11-16 19:56:56,438 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_126c6f52-b54d-4b84-864f-424dcc68299d/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2022-11-16 19:56:56,623 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_126c6f52-b54d-4b84-864f-424dcc68299d/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_126c6f52-b54d-4b84-864f-424dcc68299d/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_126c6f52-b54d-4b84-864f-424dcc68299d/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 19:56:56,624 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 82 more)] === [2022-11-16 19:56:56,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:56:56,624 INFO L85 PathProgramCache]: Analyzing trace with hash -137261269, now seen corresponding path program 2 times [2022-11-16 19:56:56,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-16 19:56:56,625 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [897264247] [2022-11-16 19:56:56,625 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 19:56:56,625 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 19:56:56,625 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_126c6f52-b54d-4b84-864f-424dcc68299d/bin/utaipan-Xvt2sAort0/mathsat [2022-11-16 19:56:56,626 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_126c6f52-b54d-4b84-864f-424dcc68299d/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 19:56:56,627 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_126c6f52-b54d-4b84-864f-424dcc68299d/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2022-11-16 19:56:58,027 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 19:56:58,027 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 19:56:58,072 INFO L263 TraceCheckSpWp]: Trace formula consists of 993 conjuncts, 29 conjunts are in the unsatisfiable core [2022-11-16 19:56:58,075 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 19:56:59,607 INFO L134 CoverageAnalysis]: Checked inductivity of 2265 backedges. 980 proven. 210 refuted. 0 times theorem prover too weak. 1075 trivial. 0 not checked. [2022-11-16 19:56:59,607 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 19:57:03,655 INFO L134 CoverageAnalysis]: Checked inductivity of 2265 backedges. 980 proven. 210 refuted. 0 times theorem prover too weak. 1075 trivial. 0 not checked. [2022-11-16 19:57:03,656 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-16 19:57:03,656 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [897264247] [2022-11-16 19:57:03,656 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [897264247] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 19:57:03,656 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [482850001] [2022-11-16 19:57:03,656 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 19:57:03,656 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-16 19:57:03,657 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_126c6f52-b54d-4b84-864f-424dcc68299d/bin/utaipan-Xvt2sAort0/cvc4 [2022-11-16 19:57:03,659 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_126c6f52-b54d-4b84-864f-424dcc68299d/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-16 19:57:03,674 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_126c6f52-b54d-4b84-864f-424dcc68299d/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt (26)] Waiting until timeout for monitored process [2022-11-16 19:57:05,395 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 19:57:05,395 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 19:57:05,413 INFO L263 TraceCheckSpWp]: Trace formula consists of 993 conjuncts, 29 conjunts are in the unsatisfiable core [2022-11-16 19:57:05,415 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 19:57:05,650 INFO L134 CoverageAnalysis]: Checked inductivity of 2265 backedges. 980 proven. 210 refuted. 0 times theorem prover too weak. 1075 trivial. 0 not checked. [2022-11-16 19:57:05,650 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 19:57:06,632 INFO L134 CoverageAnalysis]: Checked inductivity of 2265 backedges. 980 proven. 210 refuted. 0 times theorem prover too weak. 1075 trivial. 0 not checked. [2022-11-16 19:57:06,633 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [482850001] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 19:57:06,633 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2044003230] [2022-11-16 19:57:06,633 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 19:57:06,633 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 19:57:06,633 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_126c6f52-b54d-4b84-864f-424dcc68299d/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 19:57:06,634 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_126c6f52-b54d-4b84-864f-424dcc68299d/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 19:57:06,658 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_126c6f52-b54d-4b84-864f-424dcc68299d/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2022-11-16 19:57:07,343 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 19:57:07,343 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 19:57:07,378 INFO L263 TraceCheckSpWp]: Trace formula consists of 993 conjuncts, 30 conjunts are in the unsatisfiable core [2022-11-16 19:57:07,380 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 19:57:07,820 INFO L134 CoverageAnalysis]: Checked inductivity of 2265 backedges. 980 proven. 210 refuted. 0 times theorem prover too weak. 1075 trivial. 0 not checked. [2022-11-16 19:57:07,821 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 19:57:15,946 INFO L134 CoverageAnalysis]: Checked inductivity of 2265 backedges. 980 proven. 210 refuted. 0 times theorem prover too weak. 1075 trivial. 0 not checked. [2022-11-16 19:57:15,946 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2044003230] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 19:57:15,946 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-16 19:57:15,947 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25, 25, 25, 25] total 71 [2022-11-16 19:57:15,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317341939] [2022-11-16 19:57:15,947 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-16 19:57:15,948 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 71 states [2022-11-16 19:57:15,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-16 19:57:15,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2022-11-16 19:57:15,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1263, Invalid=3707, Unknown=0, NotChecked=0, Total=4970 [2022-11-16 19:57:15,951 INFO L87 Difference]: Start difference. First operand 259 states and 287 transitions. Second operand has 71 states, 71 states have (on average 1.5070422535211268) internal successors, (107), 71 states have internal predecessors, (107), 1 states have call successors, (6), 1 states have call predecessors, (6), 4 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) [2022-11-16 19:57:33,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:57:33,431 INFO L93 Difference]: Finished difference Result 291 states and 339 transitions. [2022-11-16 19:57:33,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2022-11-16 19:57:33,436 INFO L78 Accepts]: Start accepts. Automaton has has 71 states, 71 states have (on average 1.5070422535211268) internal successors, (107), 71 states have internal predecessors, (107), 1 states have call successors, (6), 1 states have call predecessors, (6), 4 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) Word has length 133 [2022-11-16 19:57:33,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:57:33,438 INFO L225 Difference]: With dead ends: 291 [2022-11-16 19:57:33,438 INFO L226 Difference]: Without dead ends: 281 [2022-11-16 19:57:33,441 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 826 GetRequests, 723 SyntacticMatches, 0 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2290 ImplicationChecksByTransitivity, 23.8s TimeCoverageRelationStatistics Valid=3401, Invalid=7519, Unknown=0, NotChecked=0, Total=10920 [2022-11-16 19:57:33,442 INFO L413 NwaCegarLoop]: 245 mSDtfsCounter, 1048 mSDsluCounter, 8126 mSDsCounter, 0 mSdLazyCounter, 920 mSolverCounterSat, 515 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1048 SdHoareTripleChecker+Valid, 8371 SdHoareTripleChecker+Invalid, 1435 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 515 IncrementalHoareTripleChecker+Valid, 920 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2022-11-16 19:57:33,442 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1048 Valid, 8371 Invalid, 1435 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [515 Valid, 920 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2022-11-16 19:57:33,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281 states. [2022-11-16 19:57:33,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281 to 281. [2022-11-16 19:57:33,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 281 states, 186 states have (on average 1.543010752688172) internal successors, (287), 266 states have internal predecessors, (287), 11 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2022-11-16 19:57:33,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 309 transitions. [2022-11-16 19:57:33,450 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 309 transitions. Word has length 133 [2022-11-16 19:57:33,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:57:33,451 INFO L495 AbstractCegarLoop]: Abstraction has 281 states and 309 transitions. [2022-11-16 19:57:33,451 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 71 states, 71 states have (on average 1.5070422535211268) internal successors, (107), 71 states have internal predecessors, (107), 1 states have call successors, (6), 1 states have call predecessors, (6), 4 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) [2022-11-16 19:57:33,451 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 309 transitions. [2022-11-16 19:57:33,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2022-11-16 19:57:33,453 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:57:33,453 INFO L195 NwaCegarLoop]: trace histogram [82, 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] [2022-11-16 19:57:33,479 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_126c6f52-b54d-4b84-864f-424dcc68299d/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2022-11-16 19:57:33,676 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_126c6f52-b54d-4b84-864f-424dcc68299d/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt (26)] Forceful destruction successful, exit code 0 [2022-11-16 19:57:33,883 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_126c6f52-b54d-4b84-864f-424dcc68299d/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2022-11-16 19:57:34,067 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_126c6f52-b54d-4b84-864f-424dcc68299d/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_126c6f52-b54d-4b84-864f-424dcc68299d/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_126c6f52-b54d-4b84-864f-424dcc68299d/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 19:57:34,067 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 82 more)] === [2022-11-16 19:57:34,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:57:34,068 INFO L85 PathProgramCache]: Analyzing trace with hash -43053845, now seen corresponding path program 3 times [2022-11-16 19:57:34,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-16 19:57:34,069 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1265777468] [2022-11-16 19:57:34,069 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-16 19:57:34,069 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 19:57:34,069 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_126c6f52-b54d-4b84-864f-424dcc68299d/bin/utaipan-Xvt2sAort0/mathsat [2022-11-16 19:57:34,070 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_126c6f52-b54d-4b84-864f-424dcc68299d/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 19:57:34,071 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_126c6f52-b54d-4b84-864f-424dcc68299d/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2022-11-16 19:57:34,604 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-16 19:57:34,604 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 19:57:34,617 INFO L263 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 28 conjunts are in the unsatisfiable core [2022-11-16 19:57:34,619 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 19:57:34,631 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-16 19:57:35,181 WARN L855 $PredicateComparison]: unable to prove that (exists ((|zalloc_or_die_calloc_model_~ptr~0#1.base| (_ BitVec 32))) (and (= (select |c_old(#valid)| |zalloc_or_die_calloc_model_~ptr~0#1.base|) (_ bv0 1)) (exists ((v_ArrVal_4635 (_ BitVec 32))) (= |c_#length| (store |c_old(#length)| |zalloc_or_die_calloc_model_~ptr~0#1.base| v_ArrVal_4635))))) is different from true [2022-11-16 19:57:35,735 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:57:35,736 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-16 19:57:35,759 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-16 19:57:35,759 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-11-16 19:57:35,812 INFO L134 CoverageAnalysis]: Checked inductivity of 3948 backedges. 1933 proven. 0 refuted. 0 times theorem prover too weak. 1621 trivial. 394 not checked. [2022-11-16 19:57:35,812 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 19:57:36,349 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-16 19:57:36,349 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1265777468] [2022-11-16 19:57:36,350 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1265777468] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 19:57:36,350 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [864858350] [2022-11-16 19:57:36,350 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-16 19:57:36,350 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-16 19:57:36,350 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_126c6f52-b54d-4b84-864f-424dcc68299d/bin/utaipan-Xvt2sAort0/cvc4 [2022-11-16 19:57:36,352 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_126c6f52-b54d-4b84-864f-424dcc68299d/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-16 19:57:36,355 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_126c6f52-b54d-4b84-864f-424dcc68299d/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt (29)] Waiting until timeout for monitored process [2022-11-16 19:57:37,304 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-16 19:57:37,304 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 19:57:37,325 INFO L263 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 34 conjunts are in the unsatisfiable core [2022-11-16 19:57:37,328 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 19:57:37,379 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-16 19:57:37,718 WARN L855 $PredicateComparison]: unable to prove that (exists ((|zalloc_or_die_calloc_model_~ptr~0#1.base| (_ BitVec 32))) (and (= (select |c_old(#valid)| |zalloc_or_die_calloc_model_~ptr~0#1.base|) (_ bv0 1)) (exists ((v_ArrVal_5144 (_ BitVec 32))) (= |c_#length| (store |c_old(#length)| |zalloc_or_die_calloc_model_~ptr~0#1.base| v_ArrVal_5144))))) is different from true [2022-11-16 19:57:38,346 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:57:38,347 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-16 19:57:38,370 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-16 19:57:38,370 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-11-16 19:57:38,384 INFO L134 CoverageAnalysis]: Checked inductivity of 3948 backedges. 1933 proven. 0 refuted. 0 times theorem prover too weak. 1621 trivial. 394 not checked. [2022-11-16 19:57:38,384 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 19:57:38,669 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [864858350] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 19:57:38,669 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [793841484] [2022-11-16 19:57:38,670 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-16 19:57:38,670 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 19:57:38,670 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_126c6f52-b54d-4b84-864f-424dcc68299d/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 19:57:38,671 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_126c6f52-b54d-4b84-864f-424dcc68299d/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 19:57:38,673 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_126c6f52-b54d-4b84-864f-424dcc68299d/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2022-11-16 19:57:39,356 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-16 19:57:39,357 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 19:57:39,366 INFO L263 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 28 conjunts are in the unsatisfiable core [2022-11-16 19:57:39,373 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 19:57:39,406 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-16 19:57:39,738 WARN L855 $PredicateComparison]: unable to prove that (exists ((|zalloc_or_die_calloc_model_~ptr~0#1.base| (_ BitVec 32))) (and (= (select |c_old(#valid)| |zalloc_or_die_calloc_model_~ptr~0#1.base|) (_ bv0 1)) (exists ((v_ArrVal_5653 (_ BitVec 32))) (= (store |c_old(#length)| |zalloc_or_die_calloc_model_~ptr~0#1.base| v_ArrVal_5653) |c_#length|)))) is different from true [2022-11-16 19:57:40,384 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:57:40,385 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-16 19:57:40,408 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-16 19:57:40,408 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-11-16 19:57:40,423 INFO L134 CoverageAnalysis]: Checked inductivity of 3948 backedges. 1933 proven. 0 refuted. 0 times theorem prover too weak. 1621 trivial. 394 not checked. [2022-11-16 19:57:40,423 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 19:57:42,845 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [793841484] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 19:57:42,846 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 19:57:42,846 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 13 [2022-11-16 19:57:42,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829210160] [2022-11-16 19:57:42,846 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 19:57:42,847 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-16 19:57:42,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-16 19:57:42,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-16 19:57:42,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=132, Unknown=3, NotChecked=72, Total=240 [2022-11-16 19:57:42,848 INFO L87 Difference]: Start difference. First operand 281 states and 309 transitions. Second operand has 14 states, 12 states have (on average 5.0) internal successors, (60), 11 states have internal predecessors, (60), 2 states have call successors, (6), 2 states have call predecessors, (6), 5 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-16 19:57:49,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:57:49,094 INFO L93 Difference]: Finished difference Result 416 states and 474 transitions. [2022-11-16 19:57:49,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-16 19:57:49,095 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 5.0) internal successors, (60), 11 states have internal predecessors, (60), 2 states have call successors, (6), 2 states have call predecessors, (6), 5 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) Word has length 155 [2022-11-16 19:57:49,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:57:49,097 INFO L225 Difference]: With dead ends: 416 [2022-11-16 19:57:49,098 INFO L226 Difference]: Without dead ends: 416 [2022-11-16 19:57:49,098 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 473 GetRequests, 452 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=50, Invalid=265, Unknown=3, NotChecked=102, Total=420 [2022-11-16 19:57:49,099 INFO L413 NwaCegarLoop]: 65 mSDtfsCounter, 225 mSDsluCounter, 363 mSDsCounter, 0 mSdLazyCounter, 1931 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 233 SdHoareTripleChecker+Valid, 428 SdHoareTripleChecker+Invalid, 2776 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 1931 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 817 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2022-11-16 19:57:49,099 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [233 Valid, 428 Invalid, 2776 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 1931 Invalid, 0 Unknown, 817 Unchecked, 5.5s Time] [2022-11-16 19:57:49,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 416 states. [2022-11-16 19:57:49,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 416 to 279. [2022-11-16 19:57:49,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 279 states, 186 states have (on average 1.532258064516129) internal successors, (285), 264 states have internal predecessors, (285), 11 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2022-11-16 19:57:49,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279 states to 279 states and 307 transitions. [2022-11-16 19:57:49,111 INFO L78 Accepts]: Start accepts. Automaton has 279 states and 307 transitions. Word has length 155 [2022-11-16 19:57:49,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:57:49,112 INFO L495 AbstractCegarLoop]: Abstraction has 279 states and 307 transitions. [2022-11-16 19:57:49,112 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 5.0) internal successors, (60), 11 states have internal predecessors, (60), 2 states have call successors, (6), 2 states have call predecessors, (6), 5 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-16 19:57:49,112 INFO L276 IsEmpty]: Start isEmpty. Operand 279 states and 307 transitions. [2022-11-16 19:57:49,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2022-11-16 19:57:49,114 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:57:49,114 INFO L195 NwaCegarLoop]: trace histogram [82, 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] [2022-11-16 19:57:49,125 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_126c6f52-b54d-4b84-864f-424dcc68299d/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt (29)] Forceful destruction successful, exit code 0 [2022-11-16 19:57:49,332 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_126c6f52-b54d-4b84-864f-424dcc68299d/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2022-11-16 19:57:49,533 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_126c6f52-b54d-4b84-864f-424dcc68299d/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (28)] Forceful destruction successful, exit code 0 [2022-11-16 19:57:49,724 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_126c6f52-b54d-4b84-864f-424dcc68299d/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt,30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_126c6f52-b54d-4b84-864f-424dcc68299d/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_126c6f52-b54d-4b84-864f-424dcc68299d/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 19:57:49,724 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 82 more)] === [2022-11-16 19:57:49,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:57:49,725 INFO L85 PathProgramCache]: Analyzing trace with hash 1574927179, now seen corresponding path program 1 times [2022-11-16 19:57:49,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-16 19:57:49,725 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1321876384] [2022-11-16 19:57:49,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:57:49,726 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 19:57:49,726 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_126c6f52-b54d-4b84-864f-424dcc68299d/bin/utaipan-Xvt2sAort0/mathsat [2022-11-16 19:57:49,727 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_126c6f52-b54d-4b84-864f-424dcc68299d/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 19:57:49,731 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_126c6f52-b54d-4b84-864f-424dcc68299d/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2022-11-16 19:57:51,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:57:51,423 INFO L263 TraceCheckSpWp]: Trace formula consists of 1249 conjuncts, 51 conjunts are in the unsatisfiable core [2022-11-16 19:57:51,426 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 19:57:56,448 INFO L134 CoverageAnalysis]: Checked inductivity of 3948 backedges. 1970 proven. 903 refuted. 0 times theorem prover too weak. 1075 trivial. 0 not checked. [2022-11-16 19:57:56,448 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 19:58:08,238 INFO L134 CoverageAnalysis]: Checked inductivity of 3948 backedges. 1970 proven. 903 refuted. 0 times theorem prover too weak. 1075 trivial. 0 not checked. [2022-11-16 19:58:08,238 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-16 19:58:08,238 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1321876384] [2022-11-16 19:58:08,238 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1321876384] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 19:58:08,238 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [216424882] [2022-11-16 19:58:08,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:58:08,239 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-16 19:58:08,239 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_126c6f52-b54d-4b84-864f-424dcc68299d/bin/utaipan-Xvt2sAort0/cvc4 [2022-11-16 19:58:08,243 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_126c6f52-b54d-4b84-864f-424dcc68299d/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-16 19:58:08,245 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_126c6f52-b54d-4b84-864f-424dcc68299d/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt (32)] Waiting until timeout for monitored process [2022-11-16 19:58:10,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:58:10,739 INFO L263 TraceCheckSpWp]: Trace formula consists of 1249 conjuncts, 51 conjunts are in the unsatisfiable core [2022-11-16 19:58:10,744 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 19:58:11,226 INFO L134 CoverageAnalysis]: Checked inductivity of 3948 backedges. 1970 proven. 903 refuted. 0 times theorem prover too weak. 1075 trivial. 0 not checked. [2022-11-16 19:58:11,226 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 19:58:13,202 INFO L134 CoverageAnalysis]: Checked inductivity of 3948 backedges. 1970 proven. 903 refuted. 0 times theorem prover too weak. 1075 trivial. 0 not checked. [2022-11-16 19:58:13,203 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [216424882] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 19:58:13,203 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [905736618] [2022-11-16 19:58:13,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:58:13,203 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 19:58:13,204 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_126c6f52-b54d-4b84-864f-424dcc68299d/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 19:58:13,207 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_126c6f52-b54d-4b84-864f-424dcc68299d/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 19:58:13,213 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_126c6f52-b54d-4b84-864f-424dcc68299d/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2022-11-16 19:58:14,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:58:14,252 INFO L263 TraceCheckSpWp]: Trace formula consists of 1249 conjuncts, 52 conjunts are in the unsatisfiable core [2022-11-16 19:58:14,255 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 19:58:15,156 INFO L134 CoverageAnalysis]: Checked inductivity of 3948 backedges. 1970 proven. 903 refuted. 0 times theorem prover too weak. 1075 trivial. 0 not checked. [2022-11-16 19:58:15,156 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 19:58:46,092 INFO L134 CoverageAnalysis]: Checked inductivity of 3948 backedges. 1970 proven. 903 refuted. 0 times theorem prover too weak. 1075 trivial. 0 not checked. [2022-11-16 19:58:46,092 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [905736618] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 19:58:46,092 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-16 19:58:46,093 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47, 47, 47, 47, 47] total 137 [2022-11-16 19:58:46,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286731170] [2022-11-16 19:58:46,093 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-16 19:58:46,094 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 137 states [2022-11-16 19:58:46,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-16 19:58:46,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 137 interpolants. [2022-11-16 19:58:46,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4453, Invalid=14179, Unknown=0, NotChecked=0, Total=18632 [2022-11-16 19:58:46,100 INFO L87 Difference]: Start difference. First operand 279 states and 307 transitions. Second operand has 137 states, 137 states have (on average 1.2773722627737227) internal successors, (175), 137 states have internal predecessors, (175), 1 states have call successors, (6), 1 states have call predecessors, (6), 4 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) [2022-11-16 20:00:10,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 20:00:10,804 INFO L93 Difference]: Finished difference Result 333 states and 403 transitions. [2022-11-16 20:00:10,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2022-11-16 20:00:10,810 INFO L78 Accepts]: Start accepts. Automaton has has 137 states, 137 states have (on average 1.2773722627737227) internal successors, (175), 137 states have internal predecessors, (175), 1 states have call successors, (6), 1 states have call predecessors, (6), 4 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) Word has length 157 [2022-11-16 20:00:10,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 20:00:10,812 INFO L225 Difference]: With dead ends: 333 [2022-11-16 20:00:10,812 INFO L226 Difference]: Without dead ends: 323 [2022-11-16 20:00:10,819 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 992 GetRequests, 801 SyntacticMatches, 0 SemanticMatches, 191 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7416 ImplicationChecksByTransitivity, 108.9s TimeCoverageRelationStatistics Valid=11068, Invalid=25988, Unknown=0, NotChecked=0, Total=37056 [2022-11-16 20:00:10,820 INFO L413 NwaCegarLoop]: 243 mSDtfsCounter, 2562 mSDsluCounter, 15447 mSDsCounter, 0 mSdLazyCounter, 2831 mSolverCounterSat, 1580 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2562 SdHoareTripleChecker+Valid, 15690 SdHoareTripleChecker+Invalid, 4411 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1580 IncrementalHoareTripleChecker+Valid, 2831 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.5s IncrementalHoareTripleChecker+Time [2022-11-16 20:00:10,820 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2562 Valid, 15690 Invalid, 4411 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1580 Valid, 2831 Invalid, 0 Unknown, 0 Unchecked, 18.5s Time] [2022-11-16 20:00:10,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2022-11-16 20:00:10,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 323. [2022-11-16 20:00:10,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 323 states, 230 states have (on average 1.4304347826086956) internal successors, (329), 308 states have internal predecessors, (329), 11 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2022-11-16 20:00:10,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 351 transitions. [2022-11-16 20:00:10,830 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 351 transitions. Word has length 157 [2022-11-16 20:00:10,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 20:00:10,831 INFO L495 AbstractCegarLoop]: Abstraction has 323 states and 351 transitions. [2022-11-16 20:00:10,831 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 137 states, 137 states have (on average 1.2773722627737227) internal successors, (175), 137 states have internal predecessors, (175), 1 states have call successors, (6), 1 states have call predecessors, (6), 4 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) [2022-11-16 20:00:10,831 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 351 transitions. [2022-11-16 20:00:10,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2022-11-16 20:00:10,833 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 20:00:10,834 INFO L195 NwaCegarLoop]: trace histogram [126, 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] [2022-11-16 20:00:10,863 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_126c6f52-b54d-4b84-864f-424dcc68299d/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2022-11-16 20:00:11,059 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_126c6f52-b54d-4b84-864f-424dcc68299d/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt (32)] Forceful destruction successful, exit code 0 [2022-11-16 20:00:11,265 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_126c6f52-b54d-4b84-864f-424dcc68299d/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (31)] Ended with exit code 0 [2022-11-16 20:00:11,447 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_126c6f52-b54d-4b84-864f-424dcc68299d/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_126c6f52-b54d-4b84-864f-424dcc68299d/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt,31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_126c6f52-b54d-4b84-864f-424dcc68299d/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 20:00:11,447 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 82 more)] === [2022-11-16 20:00:11,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 20:00:11,448 INFO L85 PathProgramCache]: Analyzing trace with hash -780720437, now seen corresponding path program 2 times [2022-11-16 20:00:11,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-16 20:00:11,449 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [688286089] [2022-11-16 20:00:11,449 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 20:00:11,449 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 20:00:11,449 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_126c6f52-b54d-4b84-864f-424dcc68299d/bin/utaipan-Xvt2sAort0/mathsat [2022-11-16 20:00:11,450 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_126c6f52-b54d-4b84-864f-424dcc68299d/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 20:00:11,466 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_126c6f52-b54d-4b84-864f-424dcc68299d/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (34)] Waiting until timeout for monitored process [2022-11-16 20:00:13,561 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 20:00:13,561 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 20:00:13,632 INFO L263 TraceCheckSpWp]: Trace formula consists of 1733 conjuncts, 95 conjunts are in the unsatisfiable core [2022-11-16 20:00:13,638 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 20:00:30,828 INFO L134 CoverageAnalysis]: Checked inductivity of 8766 backedges. 3950 proven. 3741 refuted. 0 times theorem prover too weak. 1075 trivial. 0 not checked. [2022-11-16 20:00:30,829 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 20:01:01,864 INFO L134 CoverageAnalysis]: Checked inductivity of 8766 backedges. 3950 proven. 3741 refuted. 0 times theorem prover too weak. 1075 trivial. 0 not checked. [2022-11-16 20:01:01,864 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-16 20:01:01,864 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [688286089] [2022-11-16 20:01:01,864 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [688286089] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 20:01:01,865 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [11829638] [2022-11-16 20:01:01,865 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 20:01:01,865 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-16 20:01:01,865 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_126c6f52-b54d-4b84-864f-424dcc68299d/bin/utaipan-Xvt2sAort0/cvc4 [2022-11-16 20:01:01,871 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_126c6f52-b54d-4b84-864f-424dcc68299d/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-16 20:01:01,878 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_126c6f52-b54d-4b84-864f-424dcc68299d/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt (35)] Waiting until timeout for monitored process [2022-11-16 20:01:05,753 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 20:01:05,753 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 20:01:05,841 INFO L263 TraceCheckSpWp]: Trace formula consists of 1733 conjuncts, 95 conjunts are in the unsatisfiable core [2022-11-16 20:01:05,845 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 20:01:06,741 INFO L134 CoverageAnalysis]: Checked inductivity of 8766 backedges. 3950 proven. 3741 refuted. 0 times theorem prover too weak. 1075 trivial. 0 not checked. [2022-11-16 20:01:06,741 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 20:01:12,471 INFO L134 CoverageAnalysis]: Checked inductivity of 8766 backedges. 3950 proven. 3741 refuted. 0 times theorem prover too weak. 1075 trivial. 0 not checked. [2022-11-16 20:01:12,472 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [11829638] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 20:01:12,472 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1199976898] [2022-11-16 20:01:12,472 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 20:01:12,472 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 20:01:12,473 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_126c6f52-b54d-4b84-864f-424dcc68299d/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 20:01:12,478 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_126c6f52-b54d-4b84-864f-424dcc68299d/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 20:01:12,498 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_126c6f52-b54d-4b84-864f-424dcc68299d/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2022-11-16 20:01:13,736 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 20:01:13,736 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 20:01:13,793 INFO L263 TraceCheckSpWp]: Trace formula consists of 1733 conjuncts, 96 conjunts are in the unsatisfiable core [2022-11-16 20:01:13,796 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 20:01:15,313 INFO L134 CoverageAnalysis]: Checked inductivity of 8766 backedges. 3950 proven. 3741 refuted. 0 times theorem prover too weak. 1075 trivial. 0 not checked. [2022-11-16 20:01:15,313 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 20:03:01,862 INFO L134 CoverageAnalysis]: Checked inductivity of 8766 backedges. 3950 proven. 3741 refuted. 0 times theorem prover too weak. 1075 trivial. 0 not checked. [2022-11-16 20:03:01,863 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1199976898] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 20:03:01,863 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-16 20:03:01,863 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [91, 91, 91, 91, 91, 91] total 269 [2022-11-16 20:03:01,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087564880] [2022-11-16 20:03:01,863 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-16 20:03:01,864 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 269 states [2022-11-16 20:03:01,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-16 20:03:01,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 269 interpolants. [2022-11-16 20:03:01,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15047, Invalid=57045, Unknown=0, NotChecked=0, Total=72092 [2022-11-16 20:03:01,877 INFO L87 Difference]: Start difference. First operand 323 states and 351 transitions. Second operand has 269 states, 269 states have (on average 1.141263940520446) internal successors, (307), 269 states have internal predecessors, (307), 1 states have call successors, (6), 1 states have call predecessors, (6), 4 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) [2022-11-16 20:04:12,362 WARN L233 SmtUtils]: Spent 14.82s on a formula simplification. DAG size of input: 407 DAG size of output: 287 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 20:04:34,818 WARN L233 SmtUtils]: Spent 14.79s on a formula simplification. DAG size of input: 403 DAG size of output: 287 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 20:04:57,782 WARN L233 SmtUtils]: Spent 15.06s on a formula simplification. DAG size of input: 399 DAG size of output: 287 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 20:05:20,282 WARN L233 SmtUtils]: Spent 15.06s on a formula simplification. DAG size of input: 395 DAG size of output: 287 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 20:05:42,354 WARN L233 SmtUtils]: Spent 14.68s on a formula simplification. DAG size of input: 391 DAG size of output: 287 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 20:06:04,060 WARN L233 SmtUtils]: Spent 14.35s on a formula simplification. DAG size of input: 387 DAG size of output: 287 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 20:06:25,741 WARN L233 SmtUtils]: Spent 14.34s on a formula simplification. DAG size of input: 383 DAG size of output: 287 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 20:06:48,778 WARN L233 SmtUtils]: Spent 15.64s on a formula simplification. DAG size of input: 379 DAG size of output: 287 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 20:07:11,573 WARN L233 SmtUtils]: Spent 14.78s on a formula simplification. DAG size of input: 375 DAG size of output: 287 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 20:07:34,703 WARN L233 SmtUtils]: Spent 14.94s on a formula simplification. DAG size of input: 371 DAG size of output: 287 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 20:07:58,044 WARN L233 SmtUtils]: Spent 15.00s on a formula simplification. DAG size of input: 367 DAG size of output: 287 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 20:08:20,651 WARN L233 SmtUtils]: Spent 14.68s on a formula simplification. DAG size of input: 363 DAG size of output: 287 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 20:08:43,440 WARN L233 SmtUtils]: Spent 14.77s on a formula simplification. DAG size of input: 359 DAG size of output: 287 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 20:09:05,378 WARN L233 SmtUtils]: Spent 14.23s on a formula simplification. DAG size of input: 355 DAG size of output: 287 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 20:09:27,010 WARN L233 SmtUtils]: Spent 14.02s on a formula simplification. DAG size of input: 351 DAG size of output: 287 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 20:09:48,819 WARN L233 SmtUtils]: Spent 13.95s on a formula simplification. DAG size of input: 347 DAG size of output: 287 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 20:10:12,042 WARN L233 SmtUtils]: Spent 15.33s on a formula simplification. DAG size of input: 343 DAG size of output: 287 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)