./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/termination-memory-alloca/openbsd_cbzero-alloca-1.i --full-output --architecture 64bit
--------------------------------------------------------------------------------
Checking for memory safety (deref-memtrack)
Using default analysis
Version 8393723b
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_5c446175-6d7c-4a90-92b6-041c1e7be0ea/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c446175-6d7c-4a90-92b6-041c1e7be0ea/bin/utaipan-I9t0OCRTmS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c446175-6d7c-4a90-92b6-041c1e7be0ea/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c446175-6d7c-4a90-92b6-041c1e7be0ea/bin/utaipan-I9t0OCRTmS/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/termination-memory-alloca/openbsd_cbzero-alloca-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c446175-6d7c-4a90-92b6-041c1e7be0ea/bin/utaipan-I9t0OCRTmS/config/svcomp-DerefFreeMemtrack-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c446175-6d7c-4a90-92b6-041c1e7be0ea/bin/utaipan-I9t0OCRTmS --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 64bit --witnessprinter.graph.data.programhash 717baf941b5233bcdd3406dedb0f8a4ec61d7d81c585f16d362540f6a1da773f
--- 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-8393723
[2022-11-19 07:27:04,451 INFO L177 SettingsManager]: Resetting all preferences to default values...
[2022-11-19 07:27:04,454 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values
[2022-11-19 07:27:04,481 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2022-11-19 07:27:04,482 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2022-11-19 07:27:04,483 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2022-11-19 07:27:04,485 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2022-11-19 07:27:04,488 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values
[2022-11-19 07:27:04,490 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values
[2022-11-19 07:27:04,492 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values
[2022-11-19 07:27:04,493 INFO L181 SettingsManager]: Resetting Sifa preferences to default values
[2022-11-19 07:27:04,495 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2022-11-19 07:27:04,495 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values
[2022-11-19 07:27:04,497 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values
[2022-11-19 07:27:04,498 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2022-11-19 07:27:04,500 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values
[2022-11-19 07:27:04,501 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2022-11-19 07:27:04,503 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2022-11-19 07:27:04,505 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2022-11-19 07:27:04,508 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values
[2022-11-19 07:27:04,510 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2022-11-19 07:27:04,512 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values
[2022-11-19 07:27:04,514 INFO L181 SettingsManager]: Resetting Referee preferences to default values
[2022-11-19 07:27:04,515 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values
[2022-11-19 07:27:04,521 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2022-11-19 07:27:04,522 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2022-11-19 07:27:04,522 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values
[2022-11-19 07:27:04,523 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values
[2022-11-19 07:27:04,524 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values
[2022-11-19 07:27:04,526 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring...
[2022-11-19 07:27:04,526 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values
[2022-11-19 07:27:04,527 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2022-11-19 07:27:04,528 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values
[2022-11-19 07:27:04,530 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values
[2022-11-19 07:27:04,531 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2022-11-19 07:27:04,532 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values
[2022-11-19 07:27:04,533 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2022-11-19 07:27:04,533 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring...
[2022-11-19 07:27:04,534 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values
[2022-11-19 07:27:04,535 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values
[2022-11-19 07:27:04,536 INFO L188 SettingsManager]: Finished resetting all preferences to default values...
[2022-11-19 07:27:04,538 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c446175-6d7c-4a90-92b6-041c1e7be0ea/bin/utaipan-I9t0OCRTmS/config/svcomp-DerefFreeMemtrack-64bit-Taipan_Default.epf
[2022-11-19 07:27:04,570 INFO L113 SettingsManager]: Loading preferences was successful
[2022-11-19 07:27:04,571 INFO L115 SettingsManager]: Preferences different from defaults after loading the file:
[2022-11-19 07:27:04,571 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2022-11-19 07:27:04,571 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2022-11-19 07:27:04,572 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2022-11-19 07:27:04,573 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2022-11-19 07:27:04,573 INFO L138 SettingsManager]: * User list type=DISABLED
[2022-11-19 07:27:04,573 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults:
[2022-11-19 07:27:04,574 INFO L138 SettingsManager]: * Explicit value domain=true
[2022-11-19 07:27:04,574 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain
[2022-11-19 07:27:04,574 INFO L138 SettingsManager]: * Octagon Domain=false
[2022-11-19 07:27:04,575 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain
[2022-11-19 07:27:04,575 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true
[2022-11-19 07:27:04,575 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true
[2022-11-19 07:27:04,576 INFO L138 SettingsManager]: * Interval Domain=false
[2022-11-19 07:27:04,576 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults:
[2022-11-19 07:27:04,576 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer
[2022-11-19 07:27:04,577 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC
[2022-11-19 07:27:04,578 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2022-11-19 07:27:04,578 INFO L138 SettingsManager]: * Create parallel compositions if possible=false
[2022-11-19 07:27:04,578 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2022-11-19 07:27:04,579 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false
[2022-11-19 07:27:04,579 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true
[2022-11-19 07:27:04,579 INFO L138 SettingsManager]: * Check division by zero=IGNORE
[2022-11-19 07:27:04,580 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true
[2022-11-19 07:27:04,580 INFO L138 SettingsManager]: * Bitprecise bitfields=true
[2022-11-19 07:27:04,580 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true
[2022-11-19 07:27:04,581 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2022-11-19 07:27:04,581 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true
[2022-11-19 07:27:04,581 INFO L138 SettingsManager]: * Use constant arrays=true
[2022-11-19 07:27:04,582 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2022-11-19 07:27:04,582 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode
[2022-11-19 07:27:04,582 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-11-19 07:27:04,583 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2022-11-19 07:27:04,583 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES
[2022-11-19 07:27:04,583 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP
[2022-11-19 07:27:04,583 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN
[2022-11-19 07:27:04,584 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2022-11-19 07:27:04,584 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE
[2022-11-19 07:27:04,584 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_5c446175-6d7c-4a90-92b6-041c1e7be0ea/bin/utaipan-I9t0OCRTmS/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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c446175-6d7c-4a90-92b6-041c1e7be0ea/bin/utaipan-I9t0OCRTmS
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) )
CHECK( init(main()), LTL(G valid-deref) )
CHECK( init(main()), LTL(G valid-memtrack) )
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 717baf941b5233bcdd3406dedb0f8a4ec61d7d81c585f16d362540f6a1da773f
[2022-11-19 07:27:04,918 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2022-11-19 07:27:04,949 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2022-11-19 07:27:04,953 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2022-11-19 07:27:04,955 INFO L271 PluginConnector]: Initializing CDTParser...
[2022-11-19 07:27:04,956 INFO L275 PluginConnector]: CDTParser initialized
[2022-11-19 07:27:04,957 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c446175-6d7c-4a90-92b6-041c1e7be0ea/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/termination-memory-alloca/openbsd_cbzero-alloca-1.i
[2022-11-19 07:27:05,045 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c446175-6d7c-4a90-92b6-041c1e7be0ea/bin/utaipan-I9t0OCRTmS/data/f4de529e7/9a550a47830b49579b2a84021a24132e/FLAG2f437b627
[2022-11-19 07:27:05,728 INFO L306 CDTParser]: Found 1 translation units.
[2022-11-19 07:27:05,733 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c446175-6d7c-4a90-92b6-041c1e7be0ea/sv-benchmarks/c/termination-memory-alloca/openbsd_cbzero-alloca-1.i
[2022-11-19 07:27:05,749 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c446175-6d7c-4a90-92b6-041c1e7be0ea/bin/utaipan-I9t0OCRTmS/data/f4de529e7/9a550a47830b49579b2a84021a24132e/FLAG2f437b627
[2022-11-19 07:27:06,000 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c446175-6d7c-4a90-92b6-041c1e7be0ea/bin/utaipan-I9t0OCRTmS/data/f4de529e7/9a550a47830b49579b2a84021a24132e
[2022-11-19 07:27:06,003 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2022-11-19 07:27:06,005 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements.
[2022-11-19 07:27:06,008 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2022-11-19 07:27:06,009 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2022-11-19 07:27:06,014 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized
[2022-11-19 07:27:06,015 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:27:06" (1/1) ...
[2022-11-19 07:27:06,017 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@789eaa18 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:27:06, skipping insertion in model container
[2022-11-19 07:27:06,018 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:27:06" (1/1) ...
[2022-11-19 07:27:06,026 INFO L145 MainTranslator]: Starting translation in SV-COMP mode
[2022-11-19 07:27:06,071 INFO L178 MainTranslator]: Built tables and reachable declarations
[2022-11-19 07:27:06,461 INFO L210 PostProcessor]: Analyzing one entry point: main
[2022-11-19 07:27:06,472 INFO L203 MainTranslator]: Completed pre-run
[2022-11-19 07:27:06,524 INFO L210 PostProcessor]: Analyzing one entry point: main
[2022-11-19 07:27:06,549 INFO L208 MainTranslator]: Completed translation
[2022-11-19 07:27:06,550 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:27:06 WrapperNode
[2022-11-19 07:27:06,550 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2022-11-19 07:27:06,551 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2022-11-19 07:27:06,551 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner...
[2022-11-19 07:27:06,551 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized
[2022-11-19 07:27:06,560 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:27:06" (1/1) ...
[2022-11-19 07:27:06,571 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:27:06" (1/1) ...
[2022-11-19 07:27:06,593 INFO L138 Inliner]: procedures = 111, calls = 7, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 43
[2022-11-19 07:27:06,593 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2022-11-19 07:27:06,594 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2022-11-19 07:27:06,594 INFO L271 PluginConnector]: Initializing Boogie Preprocessor...
[2022-11-19 07:27:06,595 INFO L275 PluginConnector]: Boogie Preprocessor initialized
[2022-11-19 07:27:06,604 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:27:06" (1/1) ...
[2022-11-19 07:27:06,605 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:27:06" (1/1) ...
[2022-11-19 07:27:06,607 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:27:06" (1/1) ...
[2022-11-19 07:27:06,608 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:27:06" (1/1) ...
[2022-11-19 07:27:06,612 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:27:06" (1/1) ...
[2022-11-19 07:27:06,616 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:27:06" (1/1) ...
[2022-11-19 07:27:06,617 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:27:06" (1/1) ...
[2022-11-19 07:27:06,618 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:27:06" (1/1) ...
[2022-11-19 07:27:06,620 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2022-11-19 07:27:06,625 INFO L113 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2022-11-19 07:27:06,625 INFO L271 PluginConnector]: Initializing RCFGBuilder...
[2022-11-19 07:27:06,625 INFO L275 PluginConnector]: RCFGBuilder initialized
[2022-11-19 07:27:06,626 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:27:06" (1/1) ...
[2022-11-19 07:27:06,638 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-11-19 07:27:06,651 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c446175-6d7c-4a90-92b6-041c1e7be0ea/bin/utaipan-I9t0OCRTmS/z3
[2022-11-19 07:27:06,664 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c446175-6d7c-4a90-92b6-041c1e7be0ea/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
[2022-11-19 07:27:06,678 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c446175-6d7c-4a90-92b6-041c1e7be0ea/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process
[2022-11-19 07:27:06,710 INFO L130 BoogieDeclarations]: Found specification of procedure write~int
[2022-11-19 07:27:06,710 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2022-11-19 07:27:06,711 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2022-11-19 07:27:06,713 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2022-11-19 07:27:06,713 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2022-11-19 07:27:06,829 INFO L235 CfgBuilder]: Building ICFG
[2022-11-19 07:27:06,831 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation
[2022-11-19 07:27:06,963 INFO L276 CfgBuilder]: Performing block encoding
[2022-11-19 07:27:07,001 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2022-11-19 07:27:07,001 INFO L300 CfgBuilder]: Removed 1 assume(true) statements.
[2022-11-19 07:27:07,004 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:27:07 BoogieIcfgContainer
[2022-11-19 07:27:07,004 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2022-11-19 07:27:07,008 INFO L113 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2022-11-19 07:27:07,008 INFO L271 PluginConnector]: Initializing TraceAbstraction...
[2022-11-19 07:27:07,011 INFO L275 PluginConnector]: TraceAbstraction initialized
[2022-11-19 07:27:07,012 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:27:06" (1/3) ...
[2022-11-19 07:27:07,013 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@803aeee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:27:07, skipping insertion in model container
[2022-11-19 07:27:07,013 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:27:06" (2/3) ...
[2022-11-19 07:27:07,013 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@803aeee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:27:07, skipping insertion in model container
[2022-11-19 07:27:07,013 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:27:07" (3/3) ...
[2022-11-19 07:27:07,015 INFO L112 eAbstractionObserver]: Analyzing ICFG openbsd_cbzero-alloca-1.i
[2022-11-19 07:27:07,036 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2022-11-19 07:27:07,037 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations.
[2022-11-19 07:27:07,097 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2022-11-19 07:27:07,129 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;@2d44f2c7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2022-11-19 07:27:07,129 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations.
[2022-11-19 07:27:07,134 INFO L276 IsEmpty]: Start isEmpty. Operand has 11 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 10 states have internal predecessors, (13), 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)
[2022-11-19 07:27:07,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4
[2022-11-19 07:27:07,141 INFO L187 NwaCegarLoop]: Found error trace
[2022-11-19 07:27:07,142 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1]
[2022-11-19 07:27:07,143 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK] ===
[2022-11-19 07:27:07,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-11-19 07:27:07,151 INFO L85 PathProgramCache]: Analyzing trace with hash 76485, now seen corresponding path program 1 times
[2022-11-19 07:27:07,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2022-11-19 07:27:07,172 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [695833384]
[2022-11-19 07:27:07,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-19 07:27:07,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-11-19 07:27:07,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-19 07:27:07,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-11-19 07:27:07,496 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace
[2022-11-19 07:27:07,496 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [695833384]
[2022-11-19 07:27:07,498 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [695833384] provided 1 perfect and 0 imperfect interpolant sequences
[2022-11-19 07:27:07,498 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-11-19 07:27:07,498 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1
[2022-11-19 07:27:07,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003835690]
[2022-11-19 07:27:07,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-11-19 07:27:07,506 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-11-19 07:27:07,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2022-11-19 07:27:07,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-11-19 07:27:07,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-11-19 07:27:07,560 INFO L87 Difference]: Start difference. First operand has 11 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 10 states have internal predecessors, (13), 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 1.5) 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)
[2022-11-19 07:27:07,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-11-19 07:27:07,623 INFO L93 Difference]: Finished difference Result 12 states and 13 transitions.
[2022-11-19 07:27:07,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2022-11-19 07:27:07,627 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
[2022-11-19 07:27:07,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-11-19 07:27:07,638 INFO L225 Difference]: With dead ends: 12
[2022-11-19 07:27:07,639 INFO L226 Difference]: Without dead ends: 10
[2022-11-19 07:27:07,642 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
[2022-11-19 07:27:07,648 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 1 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2022-11-19 07:27:07,651 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 12 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2022-11-19 07:27:07,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states.
[2022-11-19 07:27:07,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10.
[2022-11-19 07:27:07,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 9 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)
[2022-11-19 07:27:07,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions.
[2022-11-19 07:27:07,687 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 3
[2022-11-19 07:27:07,687 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-11-19 07:27:07,687 INFO L495 AbstractCegarLoop]: Abstraction has 10 states and 10 transitions.
[2022-11-19 07:27:07,688 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)
[2022-11-19 07:27:07,689 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 10 transitions.
[2022-11-19 07:27:07,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6
[2022-11-19 07:27:07,690 INFO L187 NwaCegarLoop]: Found error trace
[2022-11-19 07:27:07,691 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1]
[2022-11-19 07:27:07,691 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2022-11-19 07:27:07,692 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK] ===
[2022-11-19 07:27:07,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-11-19 07:27:07,696 INFO L85 PathProgramCache]: Analyzing trace with hash 73547189, now seen corresponding path program 1 times
[2022-11-19 07:27:07,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2022-11-19 07:27:07,697 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1913024877]
[2022-11-19 07:27:07,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-19 07:27:07,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-11-19 07:27:07,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-19 07:27:07,985 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-11-19 07:27:07,985 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace
[2022-11-19 07:27:07,986 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1913024877]
[2022-11-19 07:27:07,986 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1913024877] provided 1 perfect and 0 imperfect interpolant sequences
[2022-11-19 07:27:07,986 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-11-19 07:27:07,987 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2022-11-19 07:27:07,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834499253]
[2022-11-19 07:27:07,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-11-19 07:27:07,989 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2022-11-19 07:27:07,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2022-11-19 07:27:07,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2022-11-19 07:27:07,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2022-11-19 07:27:07,990 INFO L87 Difference]: Start difference. First operand 10 states and 10 transitions. Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 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)
[2022-11-19 07:27:08,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-11-19 07:27:08,023 INFO L93 Difference]: Finished difference Result 9 states and 9 transitions.
[2022-11-19 07:27:08,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2022-11-19 07:27:08,024 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 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
[2022-11-19 07:27:08,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-11-19 07:27:08,025 INFO L225 Difference]: With dead ends: 9
[2022-11-19 07:27:08,025 INFO L226 Difference]: Without dead ends: 9
[2022-11-19 07:27:08,025 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2022-11-19 07:27:08,027 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 4 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2022-11-19 07:27:08,028 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 6 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2022-11-19 07:27:08,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states.
[2022-11-19 07:27:08,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9.
[2022-11-19 07:27:08,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 8 states have internal predecessors, (9), 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)
[2022-11-19 07:27:08,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions.
[2022-11-19 07:27:08,031 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 5
[2022-11-19 07:27:08,032 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-11-19 07:27:08,032 INFO L495 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions.
[2022-11-19 07:27:08,032 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 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)
[2022-11-19 07:27:08,032 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions.
[2022-11-19 07:27:08,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6
[2022-11-19 07:27:08,033 INFO L187 NwaCegarLoop]: Found error trace
[2022-11-19 07:27:08,033 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1]
[2022-11-19 07:27:08,034 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2022-11-19 07:27:08,034 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK] ===
[2022-11-19 07:27:08,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-11-19 07:27:08,035 INFO L85 PathProgramCache]: Analyzing trace with hash 73547190, now seen corresponding path program 1 times
[2022-11-19 07:27:08,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2022-11-19 07:27:08,036 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1977449671]
[2022-11-19 07:27:08,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-19 07:27:08,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-11-19 07:27:08,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-19 07:27:08,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-11-19 07:27:08,382 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace
[2022-11-19 07:27:08,382 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1977449671]
[2022-11-19 07:27:08,382 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1977449671] provided 1 perfect and 0 imperfect interpolant sequences
[2022-11-19 07:27:08,383 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-11-19 07:27:08,383 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2022-11-19 07:27:08,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325445276]
[2022-11-19 07:27:08,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-11-19 07:27:08,384 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2022-11-19 07:27:08,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2022-11-19 07:27:08,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2022-11-19 07:27:08,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2022-11-19 07:27:08,385 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand has 5 states, 4 states have (on average 1.25) internal successors, (5), 4 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)
[2022-11-19 07:27:08,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-11-19 07:27:08,436 INFO L93 Difference]: Finished difference Result 15 states and 15 transitions.
[2022-11-19 07:27:08,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states.
[2022-11-19 07:27:08,437 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.25) internal successors, (5), 4 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
[2022-11-19 07:27:08,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-11-19 07:27:08,438 INFO L225 Difference]: With dead ends: 15
[2022-11-19 07:27:08,438 INFO L226 Difference]: Without dead ends: 15
[2022-11-19 07:27:08,438 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42
[2022-11-19 07:27:08,440 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 17 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2022-11-19 07:27:08,440 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 13 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2022-11-19 07:27:08,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states.
[2022-11-19 07:27:08,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 12.
[2022-11-19 07:27:08,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 10 states have (on average 1.3) internal successors, (13), 11 states have internal predecessors, (13), 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)
[2022-11-19 07:27:08,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 13 transitions.
[2022-11-19 07:27:08,445 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 13 transitions. Word has length 5
[2022-11-19 07:27:08,445 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-11-19 07:27:08,445 INFO L495 AbstractCegarLoop]: Abstraction has 12 states and 13 transitions.
[2022-11-19 07:27:08,446 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.25) internal successors, (5), 4 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)
[2022-11-19 07:27:08,446 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 13 transitions.
[2022-11-19 07:27:08,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7
[2022-11-19 07:27:08,447 INFO L187 NwaCegarLoop]: Found error trace
[2022-11-19 07:27:08,447 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1]
[2022-11-19 07:27:08,447 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2022-11-19 07:27:08,448 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK] ===
[2022-11-19 07:27:08,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-11-19 07:27:08,449 INFO L85 PathProgramCache]: Analyzing trace with hash -2015006103, now seen corresponding path program 1 times
[2022-11-19 07:27:08,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2022-11-19 07:27:08,449 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1670773173]
[2022-11-19 07:27:08,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-19 07:27:08,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-11-19 07:27:08,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-19 07:27:08,603 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-11-19 07:27:08,603 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace
[2022-11-19 07:27:08,604 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1670773173]
[2022-11-19 07:27:08,604 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1670773173] provided 1 perfect and 0 imperfect interpolant sequences
[2022-11-19 07:27:08,604 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-11-19 07:27:08,605 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2022-11-19 07:27:08,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828843879]
[2022-11-19 07:27:08,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-11-19 07:27:08,606 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2022-11-19 07:27:08,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2022-11-19 07:27:08,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2022-11-19 07:27:08,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2022-11-19 07:27:08,607 INFO L87 Difference]: Start difference. First operand 12 states and 13 transitions. Second operand has 5 states, 5 states have (on average 1.2) internal successors, (6), 4 states have internal predecessors, (6), 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)
[2022-11-19 07:27:08,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-11-19 07:27:08,651 INFO L93 Difference]: Finished difference Result 12 states and 12 transitions.
[2022-11-19 07:27:08,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states.
[2022-11-19 07:27:08,652 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.2) internal successors, (6), 4 states have internal predecessors, (6), 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 6
[2022-11-19 07:27:08,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-11-19 07:27:08,653 INFO L225 Difference]: With dead ends: 12
[2022-11-19 07:27:08,653 INFO L226 Difference]: Without dead ends: 12
[2022-11-19 07:27:08,653 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42
[2022-11-19 07:27:08,654 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 10 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2022-11-19 07:27:08,655 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 11 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2022-11-19 07:27:08,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states.
[2022-11-19 07:27:08,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12.
[2022-11-19 07:27:08,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 10 states have (on average 1.2) internal successors, (12), 11 states have internal predecessors, (12), 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)
[2022-11-19 07:27:08,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions.
[2022-11-19 07:27:08,658 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 6
[2022-11-19 07:27:08,658 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-11-19 07:27:08,659 INFO L495 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions.
[2022-11-19 07:27:08,659 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.2) internal successors, (6), 4 states have internal predecessors, (6), 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)
[2022-11-19 07:27:08,659 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions.
[2022-11-19 07:27:08,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9
[2022-11-19 07:27:08,660 INFO L187 NwaCegarLoop]: Found error trace
[2022-11-19 07:27:08,660 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1]
[2022-11-19 07:27:08,660 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2022-11-19 07:27:08,660 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK] ===
[2022-11-19 07:27:08,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-11-19 07:27:08,661 INFO L85 PathProgramCache]: Analyzing trace with hash 611396824, now seen corresponding path program 1 times
[2022-11-19 07:27:08,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2022-11-19 07:27:08,662 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [244866409]
[2022-11-19 07:27:08,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-19 07:27:08,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-11-19 07:27:08,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-19 07:27:09,336 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-11-19 07:27:09,337 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace
[2022-11-19 07:27:09,337 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [244866409]
[2022-11-19 07:27:09,337 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [244866409] provided 0 perfect and 1 imperfect interpolant sequences
[2022-11-19 07:27:09,338 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1924706921]
[2022-11-19 07:27:09,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-19 07:27:09,338 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-11-19 07:27:09,339 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c446175-6d7c-4a90-92b6-041c1e7be0ea/bin/utaipan-I9t0OCRTmS/z3
[2022-11-19 07:27:09,342 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c446175-6d7c-4a90-92b6-041c1e7be0ea/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2022-11-19 07:27:09,375 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c446175-6d7c-4a90-92b6-041c1e7be0ea/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2022-11-19 07:27:09,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-19 07:27:09,463 WARN L261 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 45 conjunts are in the unsatisfiable core
[2022-11-19 07:27:09,480 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2022-11-19 07:27:09,687 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7
[2022-11-19 07:27:10,270 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-11-19 07:27:10,270 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2022-11-19 07:27:10,784 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-11-19 07:27:10,784 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1924706921] provided 0 perfect and 2 imperfect interpolant sequences
[2022-11-19 07:27:10,784 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [601999149]
[2022-11-19 07:27:10,810 INFO L159 IcfgInterpreter]: Started Sifa with 6 locations of interest
[2022-11-19 07:27:10,810 INFO L166 IcfgInterpreter]: Building call graph
[2022-11-19 07:27:10,816 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start]
[2022-11-19 07:27:10,822 INFO L176 IcfgInterpreter]: Starting interpretation
[2022-11-19 07:27:10,823 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs
[2022-11-19 07:27:10,908 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7
[2022-11-19 07:27:11,005 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9
[2022-11-19 07:27:11,152 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7
[2022-11-19 07:27:11,257 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7
[2022-11-19 07:27:11,332 INFO L180 IcfgInterpreter]: Interpretation finished
[2022-11-19 07:27:12,055 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '197#(and (<= |ULTIMATE.start_main_~length~0#1| 2147483647) (<= |ULTIMATE.start_main_~n~0#1| 2147483647) (<= |ULTIMATE.start_cbzero_~b#1.offset| 0) (<= |ULTIMATE.start_cbzero_#in~length#1| 2147483647) (<= 0 |ULTIMATE.start_main_~nondetArea~0#1.offset|) (<= 0 |ULTIMATE.start_main_~nondetArea~0#1.base|) (<= |ULTIMATE.start_cbzero_~length#1| 2147483646) (<= 0 |ULTIMATE.start_cbzero_~p~0#1.base|) (<= 1 |ULTIMATE.start_cbzero_~p~0#1.offset|) (<= |ULTIMATE.start_cbzero_#in~b#1.offset| 0) (<= 0 |ULTIMATE.start_cbzero_#in~b#1.base|) (<= 0 |ULTIMATE.start_cbzero_#in~b#1.offset|) (<= 1 |ULTIMATE.start_main_~n~0#1|) (= |ULTIMATE.start_main_#t~malloc6#1.offset| 0) (<= 1 |ULTIMATE.start_main_~length~0#1|) (< (select |#length| |ULTIMATE.start_cbzero_#t~post3#1.base|) (+ |ULTIMATE.start_cbzero_#t~post3#1.offset| 1)) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_cbzero_#t~post3#1.offset|) (<= 0 |ULTIMATE.start_main_#t~malloc6#1.base|) (<= |ULTIMATE.start_main_~nondetArea~0#1.offset| 0) (<= 0 |ULTIMATE.start_cbzero_#t~post3#1.base|) (<= 0 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_cbzero_~b#1.offset|) (<= 0 |ULTIMATE.start_cbzero_~b#1.base|) (<= 1 |ULTIMATE.start_cbzero_#in~length#1|) (= |#NULL.base| 0))' at error location
[2022-11-19 07:27:12,055 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED
[2022-11-19 07:27:12,056 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2022-11-19 07:27:12,056 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 21
[2022-11-19 07:27:12,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276008921]
[2022-11-19 07:27:12,056 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2022-11-19 07:27:12,057 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states
[2022-11-19 07:27:12,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2022-11-19 07:27:12,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants.
[2022-11-19 07:27:12,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=662, Unknown=0, NotChecked=0, Total=756
[2022-11-19 07:27:12,066 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand has 23 states, 22 states have (on average 1.0909090909090908) internal successors, (24), 22 states have internal predecessors, (24), 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)
[2022-11-19 07:27:12,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-11-19 07:27:12,719 INFO L93 Difference]: Finished difference Result 15 states and 16 transitions.
[2022-11-19 07:27:12,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states.
[2022-11-19 07:27:12,719 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 1.0909090909090908) internal successors, (24), 22 states have internal predecessors, (24), 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 8
[2022-11-19 07:27:12,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-11-19 07:27:12,720 INFO L225 Difference]: With dead ends: 15
[2022-11-19 07:27:12,720 INFO L226 Difference]: Without dead ends: 15
[2022-11-19 07:27:12,721 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 176 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=165, Invalid=1025, Unknown=0, NotChecked=0, Total=1190
[2022-11-19 07:27:12,722 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 30 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2022-11-19 07:27:12,723 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 27 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2022-11-19 07:27:12,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states.
[2022-11-19 07:27:12,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15.
[2022-11-19 07:27:12,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 14 states have internal predecessors, (16), 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)
[2022-11-19 07:27:12,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions.
[2022-11-19 07:27:12,726 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 8
[2022-11-19 07:27:12,727 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-11-19 07:27:12,727 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions.
[2022-11-19 07:27:12,727 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 1.0909090909090908) internal successors, (24), 22 states have internal predecessors, (24), 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)
[2022-11-19 07:27:12,728 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions.
[2022-11-19 07:27:12,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10
[2022-11-19 07:27:12,728 INFO L187 NwaCegarLoop]: Found error trace
[2022-11-19 07:27:12,728 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1]
[2022-11-19 07:27:12,740 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c446175-6d7c-4a90-92b6-041c1e7be0ea/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0
[2022-11-19 07:27:12,934 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c446175-6d7c-4a90-92b6-041c1e7be0ea/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-11-19 07:27:12,935 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK] ===
[2022-11-19 07:27:12,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-11-19 07:27:12,936 INFO L85 PathProgramCache]: Analyzing trace with hash 1773430663, now seen corresponding path program 1 times
[2022-11-19 07:27:12,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2022-11-19 07:27:12,936 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [395801851]
[2022-11-19 07:27:12,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-19 07:27:12,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-11-19 07:27:12,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-19 07:27:13,046 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked.
[2022-11-19 07:27:13,046 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace
[2022-11-19 07:27:13,047 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [395801851]
[2022-11-19 07:27:13,047 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [395801851] provided 1 perfect and 0 imperfect interpolant sequences
[2022-11-19 07:27:13,047 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-11-19 07:27:13,047 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2022-11-19 07:27:13,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193529287]
[2022-11-19 07:27:13,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-11-19 07:27:13,048 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2022-11-19 07:27:13,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2022-11-19 07:27:13,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2022-11-19 07:27:13,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2022-11-19 07:27:13,049 INFO L87 Difference]: Start difference. First operand 15 states and 16 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 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)
[2022-11-19 07:27:13,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-11-19 07:27:13,060 INFO L93 Difference]: Finished difference Result 14 states and 15 transitions.
[2022-11-19 07:27:13,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2022-11-19 07:27:13,060 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 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 9
[2022-11-19 07:27:13,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-11-19 07:27:13,061 INFO L225 Difference]: With dead ends: 14
[2022-11-19 07:27:13,061 INFO L226 Difference]: Without dead ends: 12
[2022-11-19 07:27:13,061 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2022-11-19 07:27:13,062 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 1 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2022-11-19 07:27:13,062 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 8 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2022-11-19 07:27:13,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states.
[2022-11-19 07:27:13,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12.
[2022-11-19 07:27:13,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 11 states have internal predecessors, (12), 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)
[2022-11-19 07:27:13,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions.
[2022-11-19 07:27:13,065 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 9
[2022-11-19 07:27:13,065 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-11-19 07:27:13,065 INFO L495 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions.
[2022-11-19 07:27:13,066 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 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)
[2022-11-19 07:27:13,066 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions.
[2022-11-19 07:27:13,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12
[2022-11-19 07:27:13,066 INFO L187 NwaCegarLoop]: Found error trace
[2022-11-19 07:27:13,066 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1]
[2022-11-19 07:27:13,067 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5
[2022-11-19 07:27:13,067 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK] ===
[2022-11-19 07:27:13,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2022-11-19 07:27:13,067 INFO L85 PathProgramCache]: Analyzing trace with hash -833138058, now seen corresponding path program 2 times
[2022-11-19 07:27:13,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2022-11-19 07:27:13,068 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [363171233]
[2022-11-19 07:27:13,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-11-19 07:27:13,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-11-19 07:27:13,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-11-19 07:27:13,995 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-11-19 07:27:13,996 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace
[2022-11-19 07:27:13,996 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [363171233]
[2022-11-19 07:27:13,996 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [363171233] provided 0 perfect and 1 imperfect interpolant sequences
[2022-11-19 07:27:13,996 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2090427757]
[2022-11-19 07:27:13,996 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
[2022-11-19 07:27:13,997 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-11-19 07:27:13,997 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c446175-6d7c-4a90-92b6-041c1e7be0ea/bin/utaipan-I9t0OCRTmS/z3
[2022-11-19 07:27:13,998 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c446175-6d7c-4a90-92b6-041c1e7be0ea/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2022-11-19 07:27:14,028 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c446175-6d7c-4a90-92b6-041c1e7be0ea/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process
[2022-11-19 07:27:14,187 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s)
[2022-11-19 07:27:14,187 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2022-11-19 07:27:14,189 WARN L261 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 59 conjunts are in the unsatisfiable core
[2022-11-19 07:27:14,192 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2022-11-19 07:27:14,290 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7
[2022-11-19 07:27:15,084 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-11-19 07:27:15,085 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2022-11-19 07:27:15,877 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-11-19 07:27:15,878 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2090427757] provided 0 perfect and 2 imperfect interpolant sequences
[2022-11-19 07:27:15,878 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1226871365]
[2022-11-19 07:27:15,880 INFO L159 IcfgInterpreter]: Started Sifa with 6 locations of interest
[2022-11-19 07:27:15,880 INFO L166 IcfgInterpreter]: Building call graph
[2022-11-19 07:27:15,880 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start]
[2022-11-19 07:27:15,880 INFO L176 IcfgInterpreter]: Starting interpretation
[2022-11-19 07:27:15,880 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs
[2022-11-19 07:27:15,936 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7
[2022-11-19 07:27:15,991 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9
[2022-11-19 07:27:16,073 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7
[2022-11-19 07:27:16,167 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7
[2022-11-19 07:27:16,235 INFO L180 IcfgInterpreter]: Interpretation finished
[2022-11-19 07:27:16,923 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '368#(and (<= |ULTIMATE.start_main_~length~0#1| 2147483647) (<= |ULTIMATE.start_main_~n~0#1| 2147483647) (<= |ULTIMATE.start_cbzero_~b#1.offset| 0) (<= |ULTIMATE.start_cbzero_#in~length#1| 2147483647) (<= 0 |ULTIMATE.start_main_~nondetArea~0#1.offset|) (<= 0 |ULTIMATE.start_main_~nondetArea~0#1.base|) (<= |ULTIMATE.start_cbzero_~length#1| 2147483646) (<= 0 |ULTIMATE.start_cbzero_~p~0#1.base|) (<= 1 |ULTIMATE.start_cbzero_~p~0#1.offset|) (<= |ULTIMATE.start_cbzero_#in~b#1.offset| 0) (<= 0 |ULTIMATE.start_cbzero_#in~b#1.base|) (<= 0 |ULTIMATE.start_cbzero_#in~b#1.offset|) (<= 1 |ULTIMATE.start_main_~n~0#1|) (= |ULTIMATE.start_main_#t~malloc6#1.offset| 0) (<= 1 |ULTIMATE.start_main_~length~0#1|) (< (select |#length| |ULTIMATE.start_cbzero_#t~post3#1.base|) (+ |ULTIMATE.start_cbzero_#t~post3#1.offset| 1)) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_cbzero_#t~post3#1.offset|) (<= 0 |ULTIMATE.start_main_#t~malloc6#1.base|) (<= |ULTIMATE.start_main_~nondetArea~0#1.offset| 0) (<= 0 |ULTIMATE.start_cbzero_#t~post3#1.base|) (<= 0 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_cbzero_~b#1.offset|) (<= 0 |ULTIMATE.start_cbzero_~b#1.base|) (<= 1 |ULTIMATE.start_cbzero_#in~length#1|) (= |#NULL.base| 0))' at error location
[2022-11-19 07:27:16,923 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED
[2022-11-19 07:27:16,923 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2022-11-19 07:27:16,923 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 30
[2022-11-19 07:27:16,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828128713]
[2022-11-19 07:27:16,924 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2022-11-19 07:27:16,924 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states
[2022-11-19 07:27:16,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2022-11-19 07:27:16,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants.
[2022-11-19 07:27:16,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=1179, Unknown=0, NotChecked=0, Total=1332
[2022-11-19 07:27:16,927 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand has 32 states, 31 states have (on average 1.064516129032258) 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)
[2022-11-19 07:27:18,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-11-19 07:27:18,434 INFO L93 Difference]: Finished difference Result 14 states and 14 transitions.
[2022-11-19 07:27:18,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states.
[2022-11-19 07:27:18,435 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 1.064516129032258) 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) Word has length 11
[2022-11-19 07:27:18,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2022-11-19 07:27:18,436 INFO L225 Difference]: With dead ends: 14
[2022-11-19 07:27:18,436 INFO L226 Difference]: Without dead ends: 0
[2022-11-19 07:27:18,437 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 419 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=308, Invalid=2044, Unknown=0, NotChecked=0, Total=2352
[2022-11-19 07:27:18,438 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 29 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 154 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time
[2022-11-19 07:27:18,438 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 0 Invalid, 175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 154 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time]
[2022-11-19 07:27:18,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states.
[2022-11-19 07:27:18,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0.
[2022-11-19 07:27:18,439 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)
[2022-11-19 07:27:18,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions.
[2022-11-19 07:27:18,440 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 11
[2022-11-19 07:27:18,440 INFO L84 Accepts]: Finished accepts. word is rejected.
[2022-11-19 07:27:18,440 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions.
[2022-11-19 07:27:18,440 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 1.064516129032258) 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)
[2022-11-19 07:27:18,440 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions.
[2022-11-19 07:27:18,441 INFO L282 IsEmpty]: Finished isEmpty. No accepting run.
[2022-11-19 07:27:18,443 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 3 remaining)
[2022-11-19 07:27:18,444 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 3 remaining)
[2022-11-19 07:27:18,444 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (0 of 3 remaining)
[2022-11-19 07:27:18,458 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c446175-6d7c-4a90-92b6-041c1e7be0ea/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0
[2022-11-19 07:27:18,647 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c446175-6d7c-4a90-92b6-041c1e7be0ea/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-11-19 07:27:18,650 INFO L444 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1]
[2022-11-19 07:27:18,653 INFO L178 ceAbstractionStarter]: Computing trace abstraction results
[2022-11-19 07:27:18,656 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 07:27:18 BoogieIcfgContainer
[2022-11-19 07:27:18,656 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2022-11-19 07:27:18,656 INFO L113 PluginConnector]: ------------------------Witness Printer----------------------------
[2022-11-19 07:27:18,656 INFO L271 PluginConnector]: Initializing Witness Printer...
[2022-11-19 07:27:18,657 INFO L275 PluginConnector]: Witness Printer initialized
[2022-11-19 07:27:18,657 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:27:07" (3/4) ...
[2022-11-19 07:27:18,660 INFO L137 WitnessPrinter]: Generating witness for correct program
[2022-11-19 07:27:18,670 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges
[2022-11-19 07:27:18,671 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges
[2022-11-19 07:27:18,671 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges
[2022-11-19 07:27:18,671 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges
[2022-11-19 07:27:18,714 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c446175-6d7c-4a90-92b6-041c1e7be0ea/bin/utaipan-I9t0OCRTmS/witness.graphml
[2022-11-19 07:27:18,714 INFO L132 PluginConnector]: ------------------------ END Witness Printer----------------------------
[2022-11-19 07:27:18,715 INFO L158 Benchmark]: Toolchain (without parser) took 12710.08ms. Allocated memory was 113.2MB in the beginning and 184.5MB in the end (delta: 71.3MB). Free memory was 82.5MB in the beginning and 59.3MB in the end (delta: 23.2MB). Peak memory consumption was 93.9MB. Max. memory is 16.1GB.
[2022-11-19 07:27:18,715 INFO L158 Benchmark]: CDTParser took 1.09ms. Allocated memory is still 113.2MB. Free memory is still 64.6MB. There was no memory consumed. Max. memory is 16.1GB.
[2022-11-19 07:27:18,716 INFO L158 Benchmark]: CACSL2BoogieTranslator took 542.05ms. Allocated memory is still 113.2MB. Free memory was 82.2MB in the beginning and 82.0MB in the end (delta: 251.3kB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB.
[2022-11-19 07:27:18,716 INFO L158 Benchmark]: Boogie Procedure Inliner took 42.42ms. Allocated memory is still 113.2MB. Free memory was 82.0MB in the beginning and 80.0MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB.
[2022-11-19 07:27:18,717 INFO L158 Benchmark]: Boogie Preprocessor took 26.13ms. Allocated memory is still 113.2MB. Free memory was 80.0MB in the beginning and 78.8MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB.
[2022-11-19 07:27:18,717 INFO L158 Benchmark]: RCFGBuilder took 379.19ms. Allocated memory is still 113.2MB. Free memory was 78.8MB in the beginning and 67.1MB in the end (delta: 11.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB.
[2022-11-19 07:27:18,718 INFO L158 Benchmark]: TraceAbstraction took 11647.89ms. Allocated memory was 113.2MB in the beginning and 184.5MB in the end (delta: 71.3MB). Free memory was 66.2MB in the beginning and 62.1MB in the end (delta: 4.2MB). Peak memory consumption was 77.8MB. Max. memory is 16.1GB.
[2022-11-19 07:27:18,718 INFO L158 Benchmark]: Witness Printer took 58.00ms. Allocated memory is still 184.5MB. Free memory was 62.1MB in the beginning and 59.3MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB.
[2022-11-19 07:27:18,725 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] #######################
--- Results ---
* Results from de.uni_freiburg.informatik.ultimate.core:
- StatisticsResult: Toolchain Benchmarks
Benchmark results are:
* CDTParser took 1.09ms. Allocated memory is still 113.2MB. Free memory is still 64.6MB. There was no memory consumed. Max. memory is 16.1GB.
* CACSL2BoogieTranslator took 542.05ms. Allocated memory is still 113.2MB. Free memory was 82.2MB in the beginning and 82.0MB in the end (delta: 251.3kB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB.
* Boogie Procedure Inliner took 42.42ms. Allocated memory is still 113.2MB. Free memory was 82.0MB in the beginning and 80.0MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB.
* Boogie Preprocessor took 26.13ms. Allocated memory is still 113.2MB. Free memory was 80.0MB in the beginning and 78.8MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB.
* RCFGBuilder took 379.19ms. Allocated memory is still 113.2MB. Free memory was 78.8MB in the beginning and 67.1MB in the end (delta: 11.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB.
* TraceAbstraction took 11647.89ms. Allocated memory was 113.2MB in the beginning and 184.5MB in the end (delta: 71.3MB). Free memory was 66.2MB in the beginning and 62.1MB in the end (delta: 4.2MB). Peak memory consumption was 77.8MB. Max. memory is 16.1GB.
* Witness Printer took 58.00ms. Allocated memory is still 184.5MB. Free memory was 62.1MB in the beginning and 59.3MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. 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: 554]: 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, 11 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 11.6s, OverallIterations: 7, TraceHistogramMax: 3, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 2.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 92 SdHoareTripleChecker+Valid, 0.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 92 mSDsluCounter, 77 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 49 mSDsCounter, 30 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 321 IncrementalHoareTripleChecker+Invalid, 351 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 30 mSolverCounterUnsat, 28 mSDtfsCounter, 321 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 108 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 597 ImplicationChecksByTransitivity, 5.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=15occurred in iteration=5, InterpolantAutomatonStates: 46, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 7 MinimizatonAttempts, 3 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 5.5s InterpolantComputationTime, 66 NumberOfCodeBlocks, 66 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 74 ConstructedInterpolants, 0 QuantifiedInterpolants, 1579 SizeOfPredicates, 25 NumberOfNonLiveVariables, 189 ConjunctsInSsa, 104 ConjunctsInUnsatCore, 11 InterpolantComputations, 5 PerfectInterpolantSequences, 2/38 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
3 specifications checked. All of them hold
RESULT: Ultimate proved your program to be correct!
[2022-11-19 07:27:18,761 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c446175-6d7c-4a90-92b6-041c1e7be0ea/bin/utaipan-I9t0OCRTmS/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