./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/memory-alloca/c.03-alloca-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 6b4ec56b 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_0249fa73-c371-4111-b456-c0ec86b17ef7/bin/utaipan-6cKwYrpEi9/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0249fa73-c371-4111-b456-c0ec86b17ef7/bin/utaipan-6cKwYrpEi9/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0249fa73-c371-4111-b456-c0ec86b17ef7/bin/utaipan-6cKwYrpEi9/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0249fa73-c371-4111-b456-c0ec86b17ef7/bin/utaipan-6cKwYrpEi9/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memory-alloca/c.03-alloca-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0249fa73-c371-4111-b456-c0ec86b17ef7/bin/utaipan-6cKwYrpEi9/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0249fa73-c371-4111-b456-c0ec86b17ef7/bin/utaipan-6cKwYrpEi9 --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 279a496440714e08b745bf93c9b96ddf5eea3a1a1333716a32e013acf1d533d2 --- 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-6b4ec56 [2022-11-20 21:27:39,512 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 21:27:39,515 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 21:27:39,554 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 21:27:39,555 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 21:27:39,559 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 21:27:39,562 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 21:27:39,566 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 21:27:39,568 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 21:27:39,573 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 21:27:39,574 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 21:27:39,576 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 21:27:39,577 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 21:27:39,579 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 21:27:39,581 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 21:27:39,585 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 21:27:39,586 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 21:27:39,589 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 21:27:39,591 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 21:27:39,594 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 21:27:39,597 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 21:27:39,598 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 21:27:39,600 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 21:27:39,600 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 21:27:39,606 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 21:27:39,606 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 21:27:39,607 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 21:27:39,608 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 21:27:39,608 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 21:27:39,609 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 21:27:39,609 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 21:27:39,610 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 21:27:39,611 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 21:27:39,612 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 21:27:39,612 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 21:27:39,613 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 21:27:39,613 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 21:27:39,614 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 21:27:39,614 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 21:27:39,622 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 21:27:39,624 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 21:27:39,624 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0249fa73-c371-4111-b456-c0ec86b17ef7/bin/utaipan-6cKwYrpEi9/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2022-11-20 21:27:39,667 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 21:27:39,668 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 21:27:39,668 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 21:27:39,668 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 21:27:39,669 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 21:27:39,670 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 21:27:39,670 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-20 21:27:39,670 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-20 21:27:39,670 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-20 21:27:39,671 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-20 21:27:39,672 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-20 21:27:39,672 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-20 21:27:39,672 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-20 21:27:39,673 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-20 21:27:39,673 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-20 21:27:39,673 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-20 21:27:39,673 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-20 21:27:39,674 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-20 21:27:39,674 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 21:27:39,675 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 21:27:39,675 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 21:27:39,675 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 21:27:39,676 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-20 21:27:39,676 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 21:27:39,677 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 21:27:39,677 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 21:27:39,677 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-20 21:27:39,678 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-20 21:27:39,678 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-20 21:27:39,678 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 21:27:39,678 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-20 21:27:39,679 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 21:27:39,679 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 21:27:39,679 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 21:27:39,680 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 21:27:39,680 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 21:27:39,680 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 21:27:39,681 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-20 21:27:39,681 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 21:27:39,681 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-20 21:27:39,682 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 21:27:39,682 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-20 21:27:39,683 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_0249fa73-c371-4111-b456-c0ec86b17ef7/bin/utaipan-6cKwYrpEi9/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0249fa73-c371-4111-b456-c0ec86b17ef7/bin/utaipan-6cKwYrpEi9 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 279a496440714e08b745bf93c9b96ddf5eea3a1a1333716a32e013acf1d533d2 [2022-11-20 21:27:39,957 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 21:27:39,987 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 21:27:39,990 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 21:27:39,991 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 21:27:39,995 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 21:27:39,996 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0249fa73-c371-4111-b456-c0ec86b17ef7/bin/utaipan-6cKwYrpEi9/../../sv-benchmarks/c/memory-alloca/c.03-alloca-2.i [2022-11-20 21:27:43,058 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 21:27:43,349 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 21:27:43,349 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0249fa73-c371-4111-b456-c0ec86b17ef7/sv-benchmarks/c/memory-alloca/c.03-alloca-2.i [2022-11-20 21:27:43,364 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0249fa73-c371-4111-b456-c0ec86b17ef7/bin/utaipan-6cKwYrpEi9/data/05060eb3f/29803ac339ff44ea810b88d285cf963a/FLAGe904d9180 [2022-11-20 21:27:43,378 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0249fa73-c371-4111-b456-c0ec86b17ef7/bin/utaipan-6cKwYrpEi9/data/05060eb3f/29803ac339ff44ea810b88d285cf963a [2022-11-20 21:27:43,380 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 21:27:43,381 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 21:27:43,383 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 21:27:43,383 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 21:27:43,386 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 21:27:43,387 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 09:27:43" (1/1) ... [2022-11-20 21:27:43,388 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f305552 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:43, skipping insertion in model container [2022-11-20 21:27:43,388 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 09:27:43" (1/1) ... [2022-11-20 21:27:43,395 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 21:27:43,426 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 21:27:43,785 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 21:27:43,797 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 21:27:43,850 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 21:27:43,880 INFO L208 MainTranslator]: Completed translation [2022-11-20 21:27:43,880 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:43 WrapperNode [2022-11-20 21:27:43,881 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 21:27:43,882 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 21:27:43,882 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 21:27:43,882 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 21:27:43,890 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:43" (1/1) ... [2022-11-20 21:27:43,923 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:43" (1/1) ... [2022-11-20 21:27:43,953 INFO L138 Inliner]: procedures = 116, calls = 30, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 77 [2022-11-20 21:27:43,954 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 21:27:43,954 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 21:27:43,955 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 21:27:43,955 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 21:27:43,964 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:43" (1/1) ... [2022-11-20 21:27:43,965 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:43" (1/1) ... [2022-11-20 21:27:43,974 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:43" (1/1) ... [2022-11-20 21:27:43,975 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:43" (1/1) ... [2022-11-20 21:27:43,988 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:43" (1/1) ... [2022-11-20 21:27:43,998 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:43" (1/1) ... [2022-11-20 21:27:43,999 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:43" (1/1) ... [2022-11-20 21:27:44,003 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:43" (1/1) ... [2022-11-20 21:27:44,005 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 21:27:44,015 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 21:27:44,016 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 21:27:44,016 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 21:27:44,017 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:43" (1/1) ... [2022-11-20 21:27:44,023 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 21:27:44,035 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0249fa73-c371-4111-b456-c0ec86b17ef7/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 21:27:44,048 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0249fa73-c371-4111-b456-c0ec86b17ef7/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 21:27:44,073 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0249fa73-c371-4111-b456-c0ec86b17ef7/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 21:27:44,095 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-20 21:27:44,095 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-20 21:27:44,095 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 21:27:44,095 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 21:27:44,096 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 21:27:44,096 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 21:27:44,205 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 21:27:44,207 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 21:27:44,544 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 21:27:44,579 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 21:27:44,579 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-20 21:27:44,582 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 09:27:44 BoogieIcfgContainer [2022-11-20 21:27:44,582 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 21:27:44,584 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 21:27:44,584 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 21:27:44,587 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 21:27:44,588 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 09:27:43" (1/3) ... [2022-11-20 21:27:44,588 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70d7f83 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 09:27:44, skipping insertion in model container [2022-11-20 21:27:44,589 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:43" (2/3) ... [2022-11-20 21:27:44,589 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70d7f83 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 09:27:44, skipping insertion in model container [2022-11-20 21:27:44,589 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 09:27:44" (3/3) ... [2022-11-20 21:27:44,591 INFO L112 eAbstractionObserver]: Analyzing ICFG c.03-alloca-2.i [2022-11-20 21:27:44,609 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 21:27:44,610 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 31 error locations. [2022-11-20 21:27:44,658 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 21:27:44,665 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;@4f9d841f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 21:27:44,666 INFO L358 AbstractCegarLoop]: Starting to check reachability of 31 error locations. [2022-11-20 21:27:44,670 INFO L276 IsEmpty]: Start isEmpty. Operand has 51 states, 19 states have (on average 2.789473684210526) internal successors, (53), 50 states have internal predecessors, (53), 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) [2022-11-20 21:27:44,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-11-20 21:27:44,676 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 21:27:44,676 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-11-20 21:27:44,677 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-20 21:27:44,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 21:27:44,683 INFO L85 PathProgramCache]: Analyzing trace with hash 3383, now seen corresponding path program 1 times [2022-11-20 21:27:44,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 21:27:44,695 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951798296] [2022-11-20 21:27:44,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:27:44,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 21:27:44,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:27:45,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 21:27:45,440 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 21:27:45,440 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [951798296] [2022-11-20 21:27:45,441 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [951798296] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 21:27:45,442 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 21:27:45,442 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-20 21:27:45,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259641588] [2022-11-20 21:27:45,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 21:27:45,449 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 21:27:45,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 21:27:45,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 21:27:45,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 21:27:45,494 INFO L87 Difference]: Start difference. First operand has 51 states, 19 states have (on average 2.789473684210526) internal successors, (53), 50 states have internal predecessors, (53), 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) Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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) [2022-11-20 21:27:45,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 21:27:45,583 INFO L93 Difference]: Finished difference Result 46 states and 47 transitions. [2022-11-20 21:27:45,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 21:27:45,586 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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 2 [2022-11-20 21:27:45,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 21:27:45,593 INFO L225 Difference]: With dead ends: 46 [2022-11-20 21:27:45,593 INFO L226 Difference]: Without dead ends: 45 [2022-11-20 21:27:45,595 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 21:27:45,598 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 43 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 21:27:45,599 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 15 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 21:27:45,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2022-11-20 21:27:45,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2022-11-20 21:27:45,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 19 states have (on average 2.4210526315789473) internal successors, (46), 44 states have internal predecessors, (46), 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) [2022-11-20 21:27:45,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 46 transitions. [2022-11-20 21:27:45,630 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 46 transitions. Word has length 2 [2022-11-20 21:27:45,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 21:27:45,631 INFO L495 AbstractCegarLoop]: Abstraction has 45 states and 46 transitions. [2022-11-20 21:27:45,631 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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) [2022-11-20 21:27:45,631 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 46 transitions. [2022-11-20 21:27:45,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-11-20 21:27:45,632 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 21:27:45,632 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-11-20 21:27:45,632 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 21:27:45,633 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-20 21:27:45,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 21:27:45,634 INFO L85 PathProgramCache]: Analyzing trace with hash 3384, now seen corresponding path program 1 times [2022-11-20 21:27:45,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 21:27:45,634 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1554431996] [2022-11-20 21:27:45,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:27:45,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 21:27:45,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:27:45,894 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 21:27:45,894 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 21:27:45,894 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1554431996] [2022-11-20 21:27:45,895 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1554431996] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 21:27:45,895 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 21:27:45,895 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-20 21:27:45,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766452615] [2022-11-20 21:27:45,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 21:27:45,897 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 21:27:45,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 21:27:45,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 21:27:45,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 21:27:45,902 INFO L87 Difference]: Start difference. First operand 45 states and 46 transitions. Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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) [2022-11-20 21:27:45,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 21:27:45,974 INFO L93 Difference]: Finished difference Result 40 states and 41 transitions. [2022-11-20 21:27:45,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 21:27:45,975 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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 2 [2022-11-20 21:27:45,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 21:27:45,976 INFO L225 Difference]: With dead ends: 40 [2022-11-20 21:27:45,976 INFO L226 Difference]: Without dead ends: 40 [2022-11-20 21:27:45,977 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 21:27:45,978 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 40 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 21:27:45,979 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 15 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 21:27:45,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2022-11-20 21:27:45,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2022-11-20 21:27:45,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 19 states have (on average 2.1578947368421053) internal successors, (41), 39 states have internal predecessors, (41), 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) [2022-11-20 21:27:45,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 41 transitions. [2022-11-20 21:27:45,984 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 41 transitions. Word has length 2 [2022-11-20 21:27:45,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 21:27:45,985 INFO L495 AbstractCegarLoop]: Abstraction has 40 states and 41 transitions. [2022-11-20 21:27:45,985 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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) [2022-11-20 21:27:45,985 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 41 transitions. [2022-11-20 21:27:45,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-20 21:27:45,986 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 21:27:45,986 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-20 21:27:45,986 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 21:27:45,987 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-20 21:27:45,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 21:27:45,988 INFO L85 PathProgramCache]: Analyzing trace with hash 104849, now seen corresponding path program 1 times [2022-11-20 21:27:45,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 21:27:45,988 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [286954797] [2022-11-20 21:27:45,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:27:45,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 21:27:46,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:27:46,121 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 21:27:46,122 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 21:27:46,122 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [286954797] [2022-11-20 21:27:46,122 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [286954797] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 21:27:46,123 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 21:27:46,123 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-20 21:27:46,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272450265] [2022-11-20 21:27:46,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 21:27:46,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 21:27:46,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 21:27:46,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 21:27:46,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 21:27:46,127 INFO L87 Difference]: Start difference. First operand 40 states and 41 transitions. Second operand has 3 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) [2022-11-20 21:27:46,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 21:27:46,201 INFO L93 Difference]: Finished difference Result 38 states and 39 transitions. [2022-11-20 21:27:46,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 21:27:46,202 INFO L78 Accepts]: Start accepts. Automaton has has 3 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 [2022-11-20 21:27:46,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 21:27:46,205 INFO L225 Difference]: With dead ends: 38 [2022-11-20 21:27:46,205 INFO L226 Difference]: Without dead ends: 38 [2022-11-20 21:27:46,206 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 21:27:46,211 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 35 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 21:27:46,213 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 13 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 21:27:46,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2022-11-20 21:27:46,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2022-11-20 21:27:46,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 19 states have (on average 2.0526315789473686) internal successors, (39), 37 states have internal predecessors, (39), 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) [2022-11-20 21:27:46,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 39 transitions. [2022-11-20 21:27:46,218 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 39 transitions. Word has length 3 [2022-11-20 21:27:46,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 21:27:46,218 INFO L495 AbstractCegarLoop]: Abstraction has 38 states and 39 transitions. [2022-11-20 21:27:46,219 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 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) [2022-11-20 21:27:46,219 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 39 transitions. [2022-11-20 21:27:46,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-20 21:27:46,219 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 21:27:46,220 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-20 21:27:46,220 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-20 21:27:46,220 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-20 21:27:46,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 21:27:46,221 INFO L85 PathProgramCache]: Analyzing trace with hash 104850, now seen corresponding path program 1 times [2022-11-20 21:27:46,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 21:27:46,221 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1532901893] [2022-11-20 21:27:46,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:27:46,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 21:27:46,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:27:46,399 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 21:27:46,400 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 21:27:46,400 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1532901893] [2022-11-20 21:27:46,400 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1532901893] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 21:27:46,400 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 21:27:46,400 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-20 21:27:46,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031213716] [2022-11-20 21:27:46,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 21:27:46,401 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 21:27:46,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 21:27:46,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 21:27:46,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 21:27:46,403 INFO L87 Difference]: Start difference. First operand 38 states and 39 transitions. Second operand has 3 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) [2022-11-20 21:27:46,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 21:27:46,481 INFO L93 Difference]: Finished difference Result 36 states and 37 transitions. [2022-11-20 21:27:46,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 21:27:46,481 INFO L78 Accepts]: Start accepts. Automaton has has 3 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 [2022-11-20 21:27:46,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 21:27:46,482 INFO L225 Difference]: With dead ends: 36 [2022-11-20 21:27:46,482 INFO L226 Difference]: Without dead ends: 36 [2022-11-20 21:27:46,483 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 21:27:46,484 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 35 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 21:27:46,484 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 13 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 21:27:46,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2022-11-20 21:27:46,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2022-11-20 21:27:46,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 19 states have (on average 1.9473684210526316) internal successors, (37), 35 states have internal predecessors, (37), 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) [2022-11-20 21:27:46,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 37 transitions. [2022-11-20 21:27:46,488 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 37 transitions. Word has length 3 [2022-11-20 21:27:46,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 21:27:46,488 INFO L495 AbstractCegarLoop]: Abstraction has 36 states and 37 transitions. [2022-11-20 21:27:46,489 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 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) [2022-11-20 21:27:46,489 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 37 transitions. [2022-11-20 21:27:46,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-20 21:27:46,489 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 21:27:46,489 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-20 21:27:46,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-20 21:27:46,490 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-20 21:27:46,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 21:27:46,491 INFO L85 PathProgramCache]: Analyzing trace with hash 3250298, now seen corresponding path program 1 times [2022-11-20 21:27:46,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 21:27:46,491 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1615132286] [2022-11-20 21:27:46,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:27:46,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 21:27:46,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:27:46,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 21:27:46,599 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 21:27:46,599 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1615132286] [2022-11-20 21:27:46,600 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1615132286] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 21:27:46,600 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 21:27:46,600 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-20 21:27:46,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123261386] [2022-11-20 21:27:46,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 21:27:46,601 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 21:27:46,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 21:27:46,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 21:27:46,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 21:27:46,602 INFO L87 Difference]: Start difference. First operand 36 states and 37 transitions. Second operand has 3 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) [2022-11-20 21:27:46,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 21:27:46,650 INFO L93 Difference]: Finished difference Result 32 states and 33 transitions. [2022-11-20 21:27:46,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 21:27:46,651 INFO L78 Accepts]: Start accepts. Automaton has has 3 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 [2022-11-20 21:27:46,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 21:27:46,652 INFO L225 Difference]: With dead ends: 32 [2022-11-20 21:27:46,652 INFO L226 Difference]: Without dead ends: 32 [2022-11-20 21:27:46,653 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 21:27:46,656 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 28 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 21:27:46,659 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 9 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 21:27:46,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2022-11-20 21:27:46,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2022-11-20 21:27:46,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 19 states have (on average 1.736842105263158) internal successors, (33), 31 states have internal predecessors, (33), 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) [2022-11-20 21:27:46,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 33 transitions. [2022-11-20 21:27:46,670 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 33 transitions. Word has length 4 [2022-11-20 21:27:46,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 21:27:46,670 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 33 transitions. [2022-11-20 21:27:46,670 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 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) [2022-11-20 21:27:46,674 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 33 transitions. [2022-11-20 21:27:46,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-20 21:27:46,674 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 21:27:46,674 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-20 21:27:46,674 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-20 21:27:46,675 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-20 21:27:46,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 21:27:46,675 INFO L85 PathProgramCache]: Analyzing trace with hash 3250299, now seen corresponding path program 1 times [2022-11-20 21:27:46,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 21:27:46,676 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [707276309] [2022-11-20 21:27:46,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:27:46,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 21:27:46,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:27:46,788 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 21:27:46,788 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 21:27:46,789 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [707276309] [2022-11-20 21:27:46,789 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [707276309] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 21:27:46,789 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 21:27:46,789 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-20 21:27:46,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744025595] [2022-11-20 21:27:46,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 21:27:46,790 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 21:27:46,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 21:27:46,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 21:27:46,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 21:27:46,791 INFO L87 Difference]: Start difference. First operand 32 states and 33 transitions. Second operand has 3 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) [2022-11-20 21:27:46,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 21:27:46,831 INFO L93 Difference]: Finished difference Result 28 states and 29 transitions. [2022-11-20 21:27:46,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 21:27:46,832 INFO L78 Accepts]: Start accepts. Automaton has has 3 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 [2022-11-20 21:27:46,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 21:27:46,834 INFO L225 Difference]: With dead ends: 28 [2022-11-20 21:27:46,834 INFO L226 Difference]: Without dead ends: 28 [2022-11-20 21:27:46,834 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 21:27:46,836 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 26 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 21:27:46,839 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 9 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 21:27:46,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2022-11-20 21:27:46,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2022-11-20 21:27:46,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 19 states have (on average 1.5263157894736843) internal successors, (29), 27 states have internal predecessors, (29), 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) [2022-11-20 21:27:46,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 29 transitions. [2022-11-20 21:27:46,847 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 29 transitions. Word has length 4 [2022-11-20 21:27:46,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 21:27:46,847 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 29 transitions. [2022-11-20 21:27:46,848 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 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) [2022-11-20 21:27:46,848 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 29 transitions. [2022-11-20 21:27:46,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-20 21:27:46,849 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 21:27:46,849 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-20 21:27:46,849 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-20 21:27:46,849 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-20 21:27:46,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 21:27:46,850 INFO L85 PathProgramCache]: Analyzing trace with hash 100759220, now seen corresponding path program 1 times [2022-11-20 21:27:46,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 21:27:46,850 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941281079] [2022-11-20 21:27:46,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:27:46,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 21:27:46,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:27:46,903 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 21:27:46,903 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 21:27:46,903 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1941281079] [2022-11-20 21:27:46,903 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1941281079] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 21:27:46,904 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 21:27:46,904 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-20 21:27:46,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513296278] [2022-11-20 21:27:46,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 21:27:46,904 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 21:27:46,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 21:27:46,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 21:27:46,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 21:27:46,905 INFO L87 Difference]: Start difference. First operand 28 states and 29 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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) [2022-11-20 21:27:46,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 21:27:46,946 INFO L93 Difference]: Finished difference Result 24 states and 25 transitions. [2022-11-20 21:27:46,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 21:27:46,947 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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 5 [2022-11-20 21:27:46,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 21:27:46,948 INFO L225 Difference]: With dead ends: 24 [2022-11-20 21:27:46,948 INFO L226 Difference]: Without dead ends: 24 [2022-11-20 21:27:46,948 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 21:27:46,952 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 19 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 5 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 21:27:46,952 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 5 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 21:27:46,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2022-11-20 21:27:46,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2022-11-20 21:27:46,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 19 states have (on average 1.3157894736842106) internal successors, (25), 23 states have internal predecessors, (25), 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) [2022-11-20 21:27:46,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 25 transitions. [2022-11-20 21:27:46,957 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 25 transitions. Word has length 5 [2022-11-20 21:27:46,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 21:27:46,957 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 25 transitions. [2022-11-20 21:27:46,958 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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) [2022-11-20 21:27:46,958 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 25 transitions. [2022-11-20 21:27:46,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-20 21:27:46,958 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 21:27:46,958 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-20 21:27:46,958 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-20 21:27:46,959 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-20 21:27:46,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 21:27:46,959 INFO L85 PathProgramCache]: Analyzing trace with hash 100759221, now seen corresponding path program 1 times [2022-11-20 21:27:46,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 21:27:46,960 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2050100525] [2022-11-20 21:27:46,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:27:46,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 21:27:46,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:27:47,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 21:27:47,059 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 21:27:47,059 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2050100525] [2022-11-20 21:27:47,060 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2050100525] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 21:27:47,060 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 21:27:47,060 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-20 21:27:47,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224474432] [2022-11-20 21:27:47,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 21:27:47,060 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 21:27:47,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 21:27:47,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 21:27:47,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 21:27:47,063 INFO L87 Difference]: Start difference. First operand 24 states and 25 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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) [2022-11-20 21:27:47,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 21:27:47,097 INFO L93 Difference]: Finished difference Result 20 states and 21 transitions. [2022-11-20 21:27:47,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 21:27:47,098 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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 5 [2022-11-20 21:27:47,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 21:27:47,104 INFO L225 Difference]: With dead ends: 20 [2022-11-20 21:27:47,104 INFO L226 Difference]: Without dead ends: 20 [2022-11-20 21:27:47,104 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 21:27:47,105 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 17 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 5 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 21:27:47,106 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 5 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 21:27:47,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2022-11-20 21:27:47,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2022-11-20 21:27:47,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 19 states have (on average 1.105263157894737) internal successors, (21), 19 states have internal predecessors, (21), 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) [2022-11-20 21:27:47,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 21 transitions. [2022-11-20 21:27:47,114 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 21 transitions. Word has length 5 [2022-11-20 21:27:47,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 21:27:47,115 INFO L495 AbstractCegarLoop]: Abstraction has 20 states and 21 transitions. [2022-11-20 21:27:47,115 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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) [2022-11-20 21:27:47,115 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 21 transitions. [2022-11-20 21:27:47,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-20 21:27:47,116 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 21:27:47,116 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 21:27:47,146 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-20 21:27:47,147 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-20 21:27:47,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 21:27:47,147 INFO L85 PathProgramCache]: Analyzing trace with hash 553774910, now seen corresponding path program 1 times [2022-11-20 21:27:47,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 21:27:47,148 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [142123130] [2022-11-20 21:27:47,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:27:47,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 21:27:47,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:27:47,590 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 21:27:47,590 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 21:27:47,590 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [142123130] [2022-11-20 21:27:47,590 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [142123130] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 21:27:47,591 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 21:27:47,591 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 21:27:47,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116445057] [2022-11-20 21:27:47,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 21:27:47,592 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 21:27:47,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 21:27:47,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 21:27:47,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 21:27:47,593 INFO L87 Difference]: Start difference. First operand 20 states and 21 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 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) [2022-11-20 21:27:47,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 21:27:47,638 INFO L93 Difference]: Finished difference Result 19 states and 20 transitions. [2022-11-20 21:27:47,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 21:27:47,639 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 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 10 [2022-11-20 21:27:47,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 21:27:47,639 INFO L225 Difference]: With dead ends: 19 [2022-11-20 21:27:47,640 INFO L226 Difference]: Without dead ends: 0 [2022-11-20 21:27:47,640 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 21:27:47,641 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 11 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 21:27:47,641 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 8 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 21:27:47,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-20 21:27:47,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-20 21:27:47,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 21:27:47,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-20 21:27:47,642 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 10 [2022-11-20 21:27:47,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 21:27:47,643 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-20 21:27:47,643 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 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) [2022-11-20 21:27:47,643 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-20 21:27:47,643 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-20 21:27:47,646 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (30 of 31 remaining) [2022-11-20 21:27:47,646 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (29 of 31 remaining) [2022-11-20 21:27:47,646 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (28 of 31 remaining) [2022-11-20 21:27:47,647 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (27 of 31 remaining) [2022-11-20 21:27:47,647 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (26 of 31 remaining) [2022-11-20 21:27:47,647 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (25 of 31 remaining) [2022-11-20 21:27:47,647 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (24 of 31 remaining) [2022-11-20 21:27:47,648 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (23 of 31 remaining) [2022-11-20 21:27:47,648 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (22 of 31 remaining) [2022-11-20 21:27:47,648 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (21 of 31 remaining) [2022-11-20 21:27:47,648 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (20 of 31 remaining) [2022-11-20 21:27:47,648 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 31 remaining) [2022-11-20 21:27:47,649 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 31 remaining) [2022-11-20 21:27:47,649 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 31 remaining) [2022-11-20 21:27:47,649 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 31 remaining) [2022-11-20 21:27:47,649 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 31 remaining) [2022-11-20 21:27:47,650 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 31 remaining) [2022-11-20 21:27:47,650 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 31 remaining) [2022-11-20 21:27:47,650 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 31 remaining) [2022-11-20 21:27:47,650 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 31 remaining) [2022-11-20 21:27:47,651 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 31 remaining) [2022-11-20 21:27:47,651 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 31 remaining) [2022-11-20 21:27:47,651 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr22REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 31 remaining) [2022-11-20 21:27:47,651 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 31 remaining) [2022-11-20 21:27:47,651 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 31 remaining) [2022-11-20 21:27:47,652 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr25REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 31 remaining) [2022-11-20 21:27:47,652 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr26REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 31 remaining) [2022-11-20 21:27:47,652 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr27REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 31 remaining) [2022-11-20 21:27:47,652 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr28REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 31 remaining) [2022-11-20 21:27:47,652 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr29REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 31 remaining) [2022-11-20 21:27:47,653 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK (0 of 31 remaining) [2022-11-20 21:27:47,653 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-20 21:27:47,656 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 21:27:47,658 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-20 21:27:47,661 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 09:27:47 BoogieIcfgContainer [2022-11-20 21:27:47,661 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-20 21:27:47,662 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-20 21:27:47,662 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-20 21:27:47,662 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-20 21:27:47,663 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 09:27:44" (3/4) ... [2022-11-20 21:27:47,665 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-20 21:27:47,675 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 18 nodes and edges [2022-11-20 21:27:47,676 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2022-11-20 21:27:47,676 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-20 21:27:47,676 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-20 21:27:47,718 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0249fa73-c371-4111-b456-c0ec86b17ef7/bin/utaipan-6cKwYrpEi9/witness.graphml [2022-11-20 21:27:47,718 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-20 21:27:47,719 INFO L158 Benchmark]: Toolchain (without parser) took 4337.45ms. Allocated memory was 176.2MB in the beginning and 211.8MB in the end (delta: 35.7MB). Free memory was 143.9MB in the beginning and 86.1MB in the end (delta: 57.8MB). Peak memory consumption was 96.4MB. Max. memory is 16.1GB. [2022-11-20 21:27:47,719 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 117.4MB. Free memory is still 71.0MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 21:27:47,719 INFO L158 Benchmark]: CACSL2BoogieTranslator took 498.53ms. Allocated memory is still 176.2MB. Free memory was 143.9MB in the beginning and 128.2MB in the end (delta: 15.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2022-11-20 21:27:47,720 INFO L158 Benchmark]: Boogie Procedure Inliner took 71.92ms. Allocated memory is still 176.2MB. Free memory was 128.2MB in the beginning and 126.0MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 21:27:47,720 INFO L158 Benchmark]: Boogie Preprocessor took 60.46ms. Allocated memory is still 176.2MB. Free memory was 126.0MB in the beginning and 124.8MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 21:27:47,720 INFO L158 Benchmark]: RCFGBuilder took 566.57ms. Allocated memory is still 176.2MB. Free memory was 124.8MB in the beginning and 106.8MB in the end (delta: 18.0MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2022-11-20 21:27:47,721 INFO L158 Benchmark]: TraceAbstraction took 3077.02ms. Allocated memory was 176.2MB in the beginning and 211.8MB in the end (delta: 35.7MB). Free memory was 105.9MB in the beginning and 89.3MB in the end (delta: 16.7MB). Peak memory consumption was 54.4MB. Max. memory is 16.1GB. [2022-11-20 21:27:47,721 INFO L158 Benchmark]: Witness Printer took 56.51ms. Allocated memory is still 211.8MB. Free memory was 89.3MB in the beginning and 86.1MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-20 21:27:47,723 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 117.4MB. Free memory is still 71.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 498.53ms. Allocated memory is still 176.2MB. Free memory was 143.9MB in the beginning and 128.2MB in the end (delta: 15.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 71.92ms. Allocated memory is still 176.2MB. Free memory was 128.2MB in the beginning and 126.0MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 60.46ms. Allocated memory is still 176.2MB. Free memory was 126.0MB in the beginning and 124.8MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 566.57ms. Allocated memory is still 176.2MB. Free memory was 124.8MB in the beginning and 106.8MB in the end (delta: 18.0MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * TraceAbstraction took 3077.02ms. Allocated memory was 176.2MB in the beginning and 211.8MB in the end (delta: 35.7MB). Free memory was 105.9MB in the beginning and 89.3MB in the end (delta: 16.7MB). Peak memory consumption was 54.4MB. Max. memory is 16.1GB. * Witness Printer took 56.51ms. Allocated memory is still 211.8MB. Free memory was 89.3MB in the beginning and 86.1MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 532]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 51 locations, 31 error locations. Started 1 CEGAR loops. OverallTime: 3.0s, OverallIterations: 9, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 254 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 254 mSDsluCounter, 92 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 4 mSDsCounter, 22 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 229 IncrementalHoareTripleChecker+Invalid, 251 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 22 mSolverCounterUnsat, 88 mSDtfsCounter, 229 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 10 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=51occurred in iteration=0, InterpolantAutomatonStates: 28, 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, 9 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.7s InterpolantComputationTime, 38 NumberOfCodeBlocks, 38 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 29 ConstructedInterpolants, 0 QuantifiedInterpolants, 467 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 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 - AllSpecificationsHoldResult: All specifications hold 31 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-11-20 21:27:47,760 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0249fa73-c371-4111-b456-c0ec86b17ef7/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE