./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test6-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731db8f6-313c-4271-99f0-7f00f50186af/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731db8f6-313c-4271-99f0-7f00f50186af/bin/utaipan-TEXQjIfE4P/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731db8f6-313c-4271-99f0-7f00f50186af/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731db8f6-313c-4271-99f0-7f00f50186af/bin/utaipan-TEXQjIfE4P/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test6-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731db8f6-313c-4271-99f0-7f00f50186af/bin/utaipan-TEXQjIfE4P/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731db8f6-313c-4271-99f0-7f00f50186af/bin/utaipan-TEXQjIfE4P --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 3012c2825f53c0db53d950c12df6540de859b34b2bef033c36a98846352dedd3 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-21 00:04:09,258 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-21 00:04:09,261 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-21 00:04:09,308 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-21 00:04:09,308 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-21 00:04:09,310 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-21 00:04:09,312 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-21 00:04:09,314 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-21 00:04:09,317 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-21 00:04:09,318 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-21 00:04:09,319 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-21 00:04:09,321 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-21 00:04:09,322 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-21 00:04:09,323 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-21 00:04:09,325 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-21 00:04:09,327 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-21 00:04:09,328 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-21 00:04:09,329 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-21 00:04:09,331 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-21 00:04:09,335 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-21 00:04:09,337 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-21 00:04:09,339 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-21 00:04:09,341 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-21 00:04:09,342 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-21 00:04:09,346 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-21 00:04:09,347 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-21 00:04:09,347 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-21 00:04:09,349 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-21 00:04:09,349 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-21 00:04:09,351 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-21 00:04:09,351 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-21 00:04:09,352 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-21 00:04:09,353 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-21 00:04:09,354 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-21 00:04:09,356 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-21 00:04:09,356 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-21 00:04:09,357 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-21 00:04:09,358 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-21 00:04:09,358 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-21 00:04:09,359 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-21 00:04:09,360 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-21 00:04:09,361 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731db8f6-313c-4271-99f0-7f00f50186af/bin/utaipan-TEXQjIfE4P/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2021-11-21 00:04:09,412 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-21 00:04:09,419 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-21 00:04:09,420 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-21 00:04:09,420 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-21 00:04:09,421 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-21 00:04:09,422 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-21 00:04:09,422 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-21 00:04:09,422 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-21 00:04:09,423 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-21 00:04:09,423 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-21 00:04:09,424 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-21 00:04:09,425 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-21 00:04:09,425 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-21 00:04:09,425 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-21 00:04:09,425 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-21 00:04:09,426 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-21 00:04:09,426 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-21 00:04:09,426 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-21 00:04:09,427 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-21 00:04:09,428 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-21 00:04:09,428 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-21 00:04:09,428 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-21 00:04:09,428 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-21 00:04:09,430 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-21 00:04:09,430 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-21 00:04:09,431 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-21 00:04:09,431 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-21 00:04:09,431 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-21 00:04:09,431 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-21 00:04:09,432 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-21 00:04:09,432 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-21 00:04:09,432 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-21 00:04:09,433 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-21 00:04:09,433 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-21 00:04:09,433 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-21 00:04:09,433 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 00:04:09,434 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-21 00:04:09,434 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-21 00:04:09,434 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-21 00:04:09,434 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-21 00:04:09,435 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-21 00:04:09,435 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-21 00:04:09,435 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_731db8f6-313c-4271-99f0-7f00f50186af/bin/utaipan-TEXQjIfE4P/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731db8f6-313c-4271-99f0-7f00f50186af/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3012c2825f53c0db53d950c12df6540de859b34b2bef033c36a98846352dedd3 [2021-11-21 00:04:09,772 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-21 00:04:09,830 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-21 00:04:09,834 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-21 00:04:09,836 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-21 00:04:09,837 INFO L275 PluginConnector]: CDTParser initialized [2021-11-21 00:04:09,838 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731db8f6-313c-4271-99f0-7f00f50186af/bin/utaipan-TEXQjIfE4P/../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test6-1.i [2021-11-21 00:04:09,950 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731db8f6-313c-4271-99f0-7f00f50186af/bin/utaipan-TEXQjIfE4P/data/f878165c7/0da78ad6cfd24d62ad9d4546d1975cf6/FLAG57e99e799 [2021-11-21 00:04:10,570 INFO L306 CDTParser]: Found 1 translation units. [2021-11-21 00:04:10,571 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731db8f6-313c-4271-99f0-7f00f50186af/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test6-1.i [2021-11-21 00:04:10,598 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731db8f6-313c-4271-99f0-7f00f50186af/bin/utaipan-TEXQjIfE4P/data/f878165c7/0da78ad6cfd24d62ad9d4546d1975cf6/FLAG57e99e799 [2021-11-21 00:04:10,803 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731db8f6-313c-4271-99f0-7f00f50186af/bin/utaipan-TEXQjIfE4P/data/f878165c7/0da78ad6cfd24d62ad9d4546d1975cf6 [2021-11-21 00:04:10,809 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-21 00:04:10,810 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-21 00:04:10,813 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-21 00:04:10,813 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-21 00:04:10,816 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-21 00:04:10,817 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 12:04:10" (1/1) ... [2021-11-21 00:04:10,820 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@dcc8659 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:04:10, skipping insertion in model container [2021-11-21 00:04:10,820 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 12:04:10" (1/1) ... [2021-11-21 00:04:10,827 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-21 00:04:10,886 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-21 00:04:11,482 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731db8f6-313c-4271-99f0-7f00f50186af/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test6-1.i[44118,44131] [2021-11-21 00:04:11,492 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731db8f6-313c-4271-99f0-7f00f50186af/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test6-1.i[44660,44673] [2021-11-21 00:04:11,596 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731db8f6-313c-4271-99f0-7f00f50186af/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test6-1.i[56247,56260] [2021-11-21 00:04:11,597 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731db8f6-313c-4271-99f0-7f00f50186af/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test6-1.i[56368,56381] [2021-11-21 00:04:11,606 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 00:04:11,618 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-11-21 00:04:11,628 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@32e7fed8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:04:11, skipping insertion in model container [2021-11-21 00:04:11,628 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-21 00:04:11,628 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-21 00:04:11,630 INFO L158 Benchmark]: Toolchain (without parser) took 819.08ms. Allocated memory is still 96.5MB. Free memory was 58.8MB in the beginning and 59.3MB in the end (delta: -474.3kB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-21 00:04:11,631 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 96.5MB. Free memory was 67.9MB in the beginning and 67.9MB in the end (delta: 27.6kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-21 00:04:11,632 INFO L158 Benchmark]: CACSL2BoogieTranslator took 815.54ms. Allocated memory is still 96.5MB. Free memory was 58.5MB in the beginning and 59.3MB in the end (delta: -811.1kB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-21 00:04:11,634 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30ms. Allocated memory is still 96.5MB. Free memory was 67.9MB in the beginning and 67.9MB in the end (delta: 27.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 815.54ms. Allocated memory is still 96.5MB. Free memory was 58.5MB in the beginning and 59.3MB in the end (delta: -811.1kB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 990]: Unsupported Syntax Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731db8f6-313c-4271-99f0-7f00f50186af/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731db8f6-313c-4271-99f0-7f00f50186af/bin/utaipan-TEXQjIfE4P/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731db8f6-313c-4271-99f0-7f00f50186af/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731db8f6-313c-4271-99f0-7f00f50186af/bin/utaipan-TEXQjIfE4P/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test6-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731db8f6-313c-4271-99f0-7f00f50186af/bin/utaipan-TEXQjIfE4P/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731db8f6-313c-4271-99f0-7f00f50186af/bin/utaipan-TEXQjIfE4P --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 3012c2825f53c0db53d950c12df6540de859b34b2bef033c36a98846352dedd3 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-21 00:04:13,836 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-21 00:04:13,839 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-21 00:04:13,892 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-21 00:04:13,893 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-21 00:04:13,897 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-21 00:04:13,899 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-21 00:04:13,904 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-21 00:04:13,907 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-21 00:04:13,914 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-21 00:04:13,916 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-21 00:04:13,917 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-21 00:04:13,918 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-21 00:04:13,920 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-21 00:04:13,922 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-21 00:04:13,928 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-21 00:04:13,929 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-21 00:04:13,930 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-21 00:04:13,932 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-21 00:04:13,934 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-21 00:04:13,936 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-21 00:04:13,938 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-21 00:04:13,939 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-21 00:04:13,939 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-21 00:04:13,943 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-21 00:04:13,943 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-21 00:04:13,944 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-21 00:04:13,945 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-21 00:04:13,945 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-21 00:04:13,946 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-21 00:04:13,947 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-21 00:04:13,948 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-21 00:04:13,949 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-21 00:04:13,950 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-21 00:04:13,951 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-21 00:04:13,951 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-21 00:04:13,952 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-21 00:04:13,952 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-21 00:04:13,952 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-21 00:04:13,953 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-21 00:04:13,954 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-21 00:04:13,954 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731db8f6-313c-4271-99f0-7f00f50186af/bin/utaipan-TEXQjIfE4P/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2021-11-21 00:04:13,981 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-21 00:04:13,981 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-21 00:04:13,981 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-21 00:04:13,981 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-21 00:04:13,982 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-21 00:04:13,982 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-21 00:04:13,982 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-21 00:04:13,983 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-21 00:04:13,983 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-21 00:04:13,983 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-21 00:04:13,983 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-21 00:04:13,983 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-21 00:04:13,984 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-21 00:04:13,984 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-21 00:04:13,985 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-21 00:04:13,985 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-21 00:04:13,985 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-21 00:04:13,985 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-21 00:04:13,985 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-21 00:04:13,985 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-21 00:04:13,986 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-21 00:04:13,986 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-21 00:04:13,986 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-21 00:04:13,986 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-21 00:04:13,986 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-21 00:04:13,987 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-21 00:04:13,987 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-21 00:04:13,987 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-21 00:04:13,987 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-21 00:04:13,987 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-21 00:04:13,988 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-21 00:04:13,988 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-21 00:04:13,988 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 00:04:13,988 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-21 00:04:13,997 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-21 00:04:13,997 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-21 00:04:13,997 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-21 00:04:13,997 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-21 00:04:14,001 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-21 00:04:14,001 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731db8f6-313c-4271-99f0-7f00f50186af/bin/utaipan-TEXQjIfE4P/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731db8f6-313c-4271-99f0-7f00f50186af/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3012c2825f53c0db53d950c12df6540de859b34b2bef033c36a98846352dedd3 [2021-11-21 00:04:14,343 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-21 00:04:14,368 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-21 00:04:14,370 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-21 00:04:14,371 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-21 00:04:14,373 INFO L275 PluginConnector]: CDTParser initialized [2021-11-21 00:04:14,374 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731db8f6-313c-4271-99f0-7f00f50186af/bin/utaipan-TEXQjIfE4P/../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test6-1.i [2021-11-21 00:04:14,449 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731db8f6-313c-4271-99f0-7f00f50186af/bin/utaipan-TEXQjIfE4P/data/b6e009c84/5e4dcc5e1a844318ab76717b42d9c02c/FLAG579db787f [2021-11-21 00:04:15,130 INFO L306 CDTParser]: Found 1 translation units. [2021-11-21 00:04:15,131 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731db8f6-313c-4271-99f0-7f00f50186af/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test6-1.i [2021-11-21 00:04:15,157 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731db8f6-313c-4271-99f0-7f00f50186af/bin/utaipan-TEXQjIfE4P/data/b6e009c84/5e4dcc5e1a844318ab76717b42d9c02c/FLAG579db787f [2021-11-21 00:04:15,295 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731db8f6-313c-4271-99f0-7f00f50186af/bin/utaipan-TEXQjIfE4P/data/b6e009c84/5e4dcc5e1a844318ab76717b42d9c02c [2021-11-21 00:04:15,298 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-21 00:04:15,300 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-21 00:04:15,304 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-21 00:04:15,304 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-21 00:04:15,318 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-21 00:04:15,319 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 12:04:15" (1/1) ... [2021-11-21 00:04:15,320 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@69bb26a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:04:15, skipping insertion in model container [2021-11-21 00:04:15,321 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 12:04:15" (1/1) ... [2021-11-21 00:04:15,328 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-21 00:04:15,402 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-21 00:04:16,099 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731db8f6-313c-4271-99f0-7f00f50186af/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test6-1.i[44118,44131] [2021-11-21 00:04:16,121 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731db8f6-313c-4271-99f0-7f00f50186af/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test6-1.i[44660,44673] [2021-11-21 00:04:16,251 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731db8f6-313c-4271-99f0-7f00f50186af/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test6-1.i[56247,56260] [2021-11-21 00:04:16,253 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731db8f6-313c-4271-99f0-7f00f50186af/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test6-1.i[56368,56381] [2021-11-21 00:04:16,262 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 00:04:16,279 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-21 00:04:16,297 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-21 00:04:16,320 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731db8f6-313c-4271-99f0-7f00f50186af/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test6-1.i[44118,44131] [2021-11-21 00:04:16,322 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731db8f6-313c-4271-99f0-7f00f50186af/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test6-1.i[44660,44673] [2021-11-21 00:04:16,453 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731db8f6-313c-4271-99f0-7f00f50186af/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test6-1.i[56247,56260] [2021-11-21 00:04:16,464 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731db8f6-313c-4271-99f0-7f00f50186af/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test6-1.i[56368,56381] [2021-11-21 00:04:16,469 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 00:04:16,474 INFO L203 MainTranslator]: Completed pre-run [2021-11-21 00:04:16,526 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731db8f6-313c-4271-99f0-7f00f50186af/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test6-1.i[44118,44131] [2021-11-21 00:04:16,528 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731db8f6-313c-4271-99f0-7f00f50186af/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test6-1.i[44660,44673] [2021-11-21 00:04:16,579 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731db8f6-313c-4271-99f0-7f00f50186af/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test6-1.i[56247,56260] [2021-11-21 00:04:16,580 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731db8f6-313c-4271-99f0-7f00f50186af/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test6-1.i[56368,56381] [2021-11-21 00:04:16,583 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 00:04:16,655 INFO L208 MainTranslator]: Completed translation [2021-11-21 00:04:16,655 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:04:16 WrapperNode [2021-11-21 00:04:16,656 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-21 00:04:16,657 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-21 00:04:16,657 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-21 00:04:16,657 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-21 00:04:16,664 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:04:16" (1/1) ... [2021-11-21 00:04:16,702 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:04:16" (1/1) ... [2021-11-21 00:04:16,808 INFO L137 Inliner]: procedures = 285, calls = 294, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 1042 [2021-11-21 00:04:16,809 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-21 00:04:16,809 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-21 00:04:16,810 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-21 00:04:16,810 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-21 00:04:16,820 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:04:16" (1/1) ... [2021-11-21 00:04:16,821 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:04:16" (1/1) ... [2021-11-21 00:04:16,846 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:04:16" (1/1) ... [2021-11-21 00:04:16,846 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:04:16" (1/1) ... [2021-11-21 00:04:16,930 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:04:16" (1/1) ... [2021-11-21 00:04:16,943 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:04:16" (1/1) ... [2021-11-21 00:04:16,958 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:04:16" (1/1) ... [2021-11-21 00:04:16,973 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-21 00:04:16,974 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-21 00:04:16,974 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-21 00:04:16,974 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-21 00:04:16,976 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:04:16" (1/1) ... [2021-11-21 00:04:16,984 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 00:04:16,997 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731db8f6-313c-4271-99f0-7f00f50186af/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:04:17,013 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731db8f6-313c-4271-99f0-7f00f50186af/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-21 00:04:17,033 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731db8f6-313c-4271-99f0-7f00f50186af/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-21 00:04:17,073 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-21 00:04:17,073 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-21 00:04:17,073 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-21 00:04:17,074 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-21 00:04:17,074 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-21 00:04:17,074 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-21 00:04:17,074 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-21 00:04:17,075 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-21 00:04:17,075 INFO L130 BoogieDeclarations]: Found specification of procedure alt_bzero [2021-11-21 00:04:17,075 INFO L138 BoogieDeclarations]: Found implementation of procedure alt_bzero [2021-11-21 00:04:17,075 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-21 00:04:17,075 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-21 00:04:17,076 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-21 00:04:17,076 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-21 00:04:17,077 INFO L130 BoogieDeclarations]: Found specification of procedure alt_malloc [2021-11-21 00:04:17,078 INFO L138 BoogieDeclarations]: Found implementation of procedure alt_malloc [2021-11-21 00:04:17,080 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-21 00:04:17,080 INFO L130 BoogieDeclarations]: Found specification of procedure alt_free [2021-11-21 00:04:17,080 INFO L138 BoogieDeclarations]: Found implementation of procedure alt_free [2021-11-21 00:04:17,081 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-21 00:04:17,081 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-21 00:04:17,439 INFO L236 CfgBuilder]: Building ICFG [2021-11-21 00:04:17,440 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-21 00:04:22,818 INFO L277 CfgBuilder]: Performing block encoding [2021-11-21 00:04:22,847 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-21 00:04:22,847 INFO L301 CfgBuilder]: Removed 63 assume(true) statements. [2021-11-21 00:04:22,851 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 12:04:22 BoogieIcfgContainer [2021-11-21 00:04:22,852 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-21 00:04:22,856 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-21 00:04:22,856 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-21 00:04:22,859 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-21 00:04:22,860 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 12:04:15" (1/3) ... [2021-11-21 00:04:22,861 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42baa0af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 12:04:22, skipping insertion in model container [2021-11-21 00:04:22,861 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:04:16" (2/3) ... [2021-11-21 00:04:22,863 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42baa0af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 12:04:22, skipping insertion in model container [2021-11-21 00:04:22,863 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 12:04:22" (3/3) ... [2021-11-21 00:04:22,866 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_JEN_test6-1.i [2021-11-21 00:04:22,876 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-21 00:04:22,876 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 531 error locations. [2021-11-21 00:04:22,941 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-21 00:04:22,951 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-11-21 00:04:22,951 INFO L340 AbstractCegarLoop]: Starting to check reachability of 531 error locations. [2021-11-21 00:04:23,000 INFO L276 IsEmpty]: Start isEmpty. Operand has 1083 states, 534 states have (on average 2.2284644194756553) internal successors, (1190), 1065 states have internal predecessors, (1190), 14 states have call successors, (14), 4 states have call predecessors, (14), 4 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2021-11-21 00:04:23,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-11-21 00:04:23,007 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:04:23,008 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-11-21 00:04:23,009 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [alt_mallocErr0REQUIRES_VIOLATION, alt_mallocErr1REQUIRES_VIOLATION, alt_freeErr0REQUIRES_VIOLATION, alt_freeErr1REQUIRES_VIOLATION (and 527 more)] === [2021-11-21 00:04:23,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:04:23,015 INFO L85 PathProgramCache]: Analyzing trace with hash 77521, now seen corresponding path program 1 times [2021-11-21 00:04:23,028 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 00:04:23,029 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1238928779] [2021-11-21 00:04:23,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:04:23,030 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 00:04:23,031 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731db8f6-313c-4271-99f0-7f00f50186af/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 00:04:23,034 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731db8f6-313c-4271-99f0-7f00f50186af/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 00:04:23,077 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731db8f6-313c-4271-99f0-7f00f50186af/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-21 00:04:23,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:04:23,225 INFO L263 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-21 00:04:23,231 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:04:23,343 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-21 00:04:23,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:04:23,365 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 00:04:23,396 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:04:23,397 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 00:04:23,398 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1238928779] [2021-11-21 00:04:23,398 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1238928779] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 00:04:23,398 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:04:23,399 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-21 00:04:23,400 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923327006] [2021-11-21 00:04:23,412 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 00:04:23,416 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 00:04:23,416 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 00:04:23,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 00:04:23,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:04:23,466 INFO L87 Difference]: Start difference. First operand has 1083 states, 534 states have (on average 2.2284644194756553) internal successors, (1190), 1065 states have internal predecessors, (1190), 14 states have call successors, (14), 4 states have call predecessors, (14), 4 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 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) [2021-11-21 00:04:25,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:04:25,817 INFO L93 Difference]: Finished difference Result 1162 states and 1229 transitions. [2021-11-21 00:04:25,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 00:04:25,819 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 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 [2021-11-21 00:04:25,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:04:25,840 INFO L225 Difference]: With dead ends: 1162 [2021-11-21 00:04:25,841 INFO L226 Difference]: Without dead ends: 1160 [2021-11-21 00:04:25,842 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:04:25,852 INFO L933 BasicCegarLoop]: 798 mSDtfsCounter, 714 mSDsluCounter, 246 mSDsCounter, 0 mSdLazyCounter, 590 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 717 SdHoareTripleChecker+Valid, 1044 SdHoareTripleChecker+Invalid, 603 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 590 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2021-11-21 00:04:25,853 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [717 Valid, 1044 Invalid, 603 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 590 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2021-11-21 00:04:25,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1160 states. [2021-11-21 00:04:25,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1160 to 1103. [2021-11-21 00:04:25,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1103 states, 568 states have (on average 2.084507042253521) internal successors, (1184), 1086 states have internal predecessors, (1184), 13 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2021-11-21 00:04:25,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1103 states to 1103 states and 1210 transitions. [2021-11-21 00:04:25,957 INFO L78 Accepts]: Start accepts. Automaton has 1103 states and 1210 transitions. Word has length 3 [2021-11-21 00:04:25,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:04:25,958 INFO L470 AbstractCegarLoop]: Abstraction has 1103 states and 1210 transitions. [2021-11-21 00:04:25,958 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 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) [2021-11-21 00:04:25,958 INFO L276 IsEmpty]: Start isEmpty. Operand 1103 states and 1210 transitions. [2021-11-21 00:04:25,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-11-21 00:04:25,959 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:04:25,959 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-11-21 00:04:25,974 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731db8f6-313c-4271-99f0-7f00f50186af/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-21 00:04:26,170 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731db8f6-313c-4271-99f0-7f00f50186af/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 00:04:26,170 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [alt_mallocErr0REQUIRES_VIOLATION, alt_mallocErr1REQUIRES_VIOLATION, alt_freeErr0REQUIRES_VIOLATION, alt_freeErr1REQUIRES_VIOLATION (and 527 more)] === [2021-11-21 00:04:26,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:04:26,171 INFO L85 PathProgramCache]: Analyzing trace with hash 77522, now seen corresponding path program 1 times [2021-11-21 00:04:26,172 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 00:04:26,172 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [555493105] [2021-11-21 00:04:26,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:04:26,172 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 00:04:26,172 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731db8f6-313c-4271-99f0-7f00f50186af/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 00:04:26,173 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731db8f6-313c-4271-99f0-7f00f50186af/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 00:04:26,179 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731db8f6-313c-4271-99f0-7f00f50186af/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-21 00:04:26,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:04:26,292 INFO L263 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-21 00:04:26,294 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:04:26,311 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-21 00:04:26,325 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:04:26,325 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 00:04:26,382 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:04:26,382 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 00:04:26,382 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [555493105] [2021-11-21 00:04:26,383 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [555493105] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 00:04:26,383 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:04:26,383 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-21 00:04:26,383 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590396464] [2021-11-21 00:04:26,383 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 00:04:26,385 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 00:04:26,385 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 00:04:26,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 00:04:26,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-21 00:04:26,386 INFO L87 Difference]: Start difference. First operand 1103 states and 1210 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) [2021-11-21 00:04:31,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:04:31,278 INFO L93 Difference]: Finished difference Result 1533 states and 1633 transitions. [2021-11-21 00:04:31,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-21 00:04:31,279 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 3 [2021-11-21 00:04:31,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:04:31,287 INFO L225 Difference]: With dead ends: 1533 [2021-11-21 00:04:31,287 INFO L226 Difference]: Without dead ends: 1533 [2021-11-21 00:04:31,288 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-21 00:04:31,289 INFO L933 BasicCegarLoop]: 803 mSDtfsCounter, 1124 mSDsluCounter, 829 mSDsCounter, 0 mSdLazyCounter, 1093 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1134 SdHoareTripleChecker+Valid, 1632 SdHoareTripleChecker+Invalid, 1111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 1093 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2021-11-21 00:04:31,290 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1134 Valid, 1632 Invalid, 1111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 1093 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2021-11-21 00:04:31,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1533 states. [2021-11-21 00:04:31,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1533 to 1099. [2021-11-21 00:04:31,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1099 states, 573 states have (on average 2.0593368237347294) internal successors, (1180), 1082 states have internal predecessors, (1180), 13 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2021-11-21 00:04:31,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1099 states to 1099 states and 1206 transitions. [2021-11-21 00:04:31,340 INFO L78 Accepts]: Start accepts. Automaton has 1099 states and 1206 transitions. Word has length 3 [2021-11-21 00:04:31,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:04:31,340 INFO L470 AbstractCegarLoop]: Abstraction has 1099 states and 1206 transitions. [2021-11-21 00:04:31,341 INFO L471 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) [2021-11-21 00:04:31,341 INFO L276 IsEmpty]: Start isEmpty. Operand 1099 states and 1206 transitions. [2021-11-21 00:04:31,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-21 00:04:31,342 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:04:31,342 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:04:31,355 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731db8f6-313c-4271-99f0-7f00f50186af/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-21 00:04:31,554 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731db8f6-313c-4271-99f0-7f00f50186af/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 00:04:31,554 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATION === [alt_mallocErr0REQUIRES_VIOLATION, alt_mallocErr1REQUIRES_VIOLATION, alt_freeErr0REQUIRES_VIOLATION, alt_freeErr1REQUIRES_VIOLATION (and 527 more)] === [2021-11-21 00:04:31,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:04:31,555 INFO L85 PathProgramCache]: Analyzing trace with hash -102759776, now seen corresponding path program 1 times [2021-11-21 00:04:31,556 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 00:04:31,556 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1064530470] [2021-11-21 00:04:31,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:04:31,557 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 00:04:31,557 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731db8f6-313c-4271-99f0-7f00f50186af/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 00:04:31,558 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731db8f6-313c-4271-99f0-7f00f50186af/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 00:04:31,561 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731db8f6-313c-4271-99f0-7f00f50186af/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-21 00:04:31,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:04:31,714 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-21 00:04:31,716 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:04:31,739 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-21 00:04:31,782 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:04:31,783 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 00:04:31,829 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:04:31,830 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 00:04:31,830 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1064530470] [2021-11-21 00:04:31,830 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1064530470] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 00:04:31,830 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:04:31,831 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-21 00:04:31,831 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339468595] [2021-11-21 00:04:31,831 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 00:04:31,832 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 00:04:31,832 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 00:04:31,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 00:04:31,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-21 00:04:31,833 INFO L87 Difference]: Start difference. First operand 1099 states and 1206 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 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) [2021-11-21 00:04:35,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:04:35,497 INFO L93 Difference]: Finished difference Result 1871 states and 2002 transitions. [2021-11-21 00:04:35,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-21 00:04:35,498 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 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) Word has length 9 [2021-11-21 00:04:35,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:04:35,509 INFO L225 Difference]: With dead ends: 1871 [2021-11-21 00:04:35,509 INFO L226 Difference]: Without dead ends: 1871 [2021-11-21 00:04:35,509 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 13 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-21 00:04:35,511 INFO L933 BasicCegarLoop]: 1001 mSDtfsCounter, 2128 mSDsluCounter, 947 mSDsCounter, 0 mSdLazyCounter, 1367 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2134 SdHoareTripleChecker+Valid, 1948 SdHoareTripleChecker+Invalid, 1424 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 1367 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2021-11-21 00:04:35,511 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2134 Valid, 1948 Invalid, 1424 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 1367 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2021-11-21 00:04:35,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1871 states. [2021-11-21 00:04:35,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1871 to 1054. [2021-11-21 00:04:35,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1054 states, 573 states have (on average 1.975567190226876) internal successors, (1132), 1037 states have internal predecessors, (1132), 13 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2021-11-21 00:04:35,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1054 states to 1054 states and 1158 transitions. [2021-11-21 00:04:35,566 INFO L78 Accepts]: Start accepts. Automaton has 1054 states and 1158 transitions. Word has length 9 [2021-11-21 00:04:35,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:04:35,566 INFO L470 AbstractCegarLoop]: Abstraction has 1054 states and 1158 transitions. [2021-11-21 00:04:35,566 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 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) [2021-11-21 00:04:35,566 INFO L276 IsEmpty]: Start isEmpty. Operand 1054 states and 1158 transitions. [2021-11-21 00:04:35,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-21 00:04:35,567 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:04:35,567 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:04:35,582 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731db8f6-313c-4271-99f0-7f00f50186af/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-21 00:04:35,778 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731db8f6-313c-4271-99f0-7f00f50186af/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 00:04:35,779 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATION === [alt_mallocErr0REQUIRES_VIOLATION, alt_mallocErr1REQUIRES_VIOLATION, alt_freeErr0REQUIRES_VIOLATION, alt_freeErr1REQUIRES_VIOLATION (and 527 more)] === [2021-11-21 00:04:35,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:04:35,779 INFO L85 PathProgramCache]: Analyzing trace with hash -102759775, now seen corresponding path program 1 times [2021-11-21 00:04:35,780 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 00:04:35,780 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [466597658] [2021-11-21 00:04:35,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:04:35,780 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 00:04:35,780 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731db8f6-313c-4271-99f0-7f00f50186af/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 00:04:35,781 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731db8f6-313c-4271-99f0-7f00f50186af/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 00:04:35,782 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731db8f6-313c-4271-99f0-7f00f50186af/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-21 00:04:35,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:04:35,893 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-21 00:04:35,894 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:04:35,924 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-21 00:04:35,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:04:35,986 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 00:04:36,141 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:04:36,142 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 00:04:36,142 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [466597658] [2021-11-21 00:04:36,142 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [466597658] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 00:04:36,142 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:04:36,142 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-21 00:04:36,143 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651126277] [2021-11-21 00:04:36,143 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 00:04:36,143 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-21 00:04:36,143 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 00:04:36,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-21 00:04:36,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-21 00:04:36,144 INFO L87 Difference]: Start difference. First operand 1054 states and 1158 transitions. Second operand has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 states have internal predecessors, (14), 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) [2021-11-21 00:04:43,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:04:43,449 INFO L93 Difference]: Finished difference Result 1486 states and 1587 transitions. [2021-11-21 00:04:43,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-21 00:04:43,451 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 states have internal predecessors, (14), 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 [2021-11-21 00:04:43,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:04:43,461 INFO L225 Difference]: With dead ends: 1486 [2021-11-21 00:04:43,461 INFO L226 Difference]: Without dead ends: 1486 [2021-11-21 00:04:43,461 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-21 00:04:43,463 INFO L933 BasicCegarLoop]: 1184 mSDtfsCounter, 2041 mSDsluCounter, 1355 mSDsCounter, 0 mSdLazyCounter, 1620 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2044 SdHoareTripleChecker+Valid, 2539 SdHoareTripleChecker+Invalid, 1642 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 1620 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.2s IncrementalHoareTripleChecker+Time [2021-11-21 00:04:43,463 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2044 Valid, 2539 Invalid, 1642 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 1620 Invalid, 0 Unknown, 0 Unchecked, 7.2s Time] [2021-11-21 00:04:43,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1486 states. [2021-11-21 00:04:43,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1486 to 1044. [2021-11-21 00:04:43,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1044 states, 573 states have (on average 1.9528795811518325) internal successors, (1119), 1027 states have internal predecessors, (1119), 13 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2021-11-21 00:04:43,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1044 states to 1044 states and 1145 transitions. [2021-11-21 00:04:43,499 INFO L78 Accepts]: Start accepts. Automaton has 1044 states and 1145 transitions. Word has length 9 [2021-11-21 00:04:43,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:04:43,499 INFO L470 AbstractCegarLoop]: Abstraction has 1044 states and 1145 transitions. [2021-11-21 00:04:43,500 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 states have internal predecessors, (14), 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) [2021-11-21 00:04:43,500 INFO L276 IsEmpty]: Start isEmpty. Operand 1044 states and 1145 transitions. [2021-11-21 00:04:43,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-21 00:04:43,501 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:04:43,501 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:04:43,513 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731db8f6-313c-4271-99f0-7f00f50186af/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (5)] Ended with exit code 0 [2021-11-21 00:04:43,713 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731db8f6-313c-4271-99f0-7f00f50186af/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 00:04:43,713 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr516ASSERT_VIOLATIONMEMORY_LEAK === [alt_mallocErr0REQUIRES_VIOLATION, alt_mallocErr1REQUIRES_VIOLATION, alt_freeErr0REQUIRES_VIOLATION, alt_freeErr1REQUIRES_VIOLATION (and 527 more)] === [2021-11-21 00:04:43,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:04:43,714 INFO L85 PathProgramCache]: Analyzing trace with hash -856298529, now seen corresponding path program 1 times [2021-11-21 00:04:43,714 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 00:04:43,714 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1572485720] [2021-11-21 00:04:43,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:04:43,715 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 00:04:43,715 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731db8f6-313c-4271-99f0-7f00f50186af/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 00:04:43,716 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731db8f6-313c-4271-99f0-7f00f50186af/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 00:04:43,729 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731db8f6-313c-4271-99f0-7f00f50186af/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-21 00:04:43,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:04:43,851 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-21 00:04:43,852 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:04:43,957 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:04:43,957 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 00:04:44,037 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:04:44,037 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 00:04:44,038 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1572485720] [2021-11-21 00:04:44,038 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1572485720] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 00:04:44,038 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:04:44,038 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-21 00:04:44,038 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215012600] [2021-11-21 00:04:44,039 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 00:04:44,039 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 00:04:44,039 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 00:04:44,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 00:04:44,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-21 00:04:44,040 INFO L87 Difference]: Start difference. First operand 1044 states and 1145 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 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) [2021-11-21 00:04:44,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:04:44,945 INFO L93 Difference]: Finished difference Result 1494 states and 1632 transitions. [2021-11-21 00:04:44,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-21 00:04:44,946 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 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 [2021-11-21 00:04:44,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:04:44,955 INFO L225 Difference]: With dead ends: 1494 [2021-11-21 00:04:44,955 INFO L226 Difference]: Without dead ends: 1494 [2021-11-21 00:04:44,956 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-21 00:04:44,957 INFO L933 BasicCegarLoop]: 1145 mSDtfsCounter, 543 mSDsluCounter, 1947 mSDsCounter, 0 mSdLazyCounter, 254 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 552 SdHoareTripleChecker+Valid, 3092 SdHoareTripleChecker+Invalid, 267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 254 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-21 00:04:44,957 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [552 Valid, 3092 Invalid, 267 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 254 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-11-21 00:04:44,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1494 states. [2021-11-21 00:04:44,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1494 to 1283. [2021-11-21 00:04:44,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1283 states, 812 states have (on average 1.935960591133005) internal successors, (1572), 1266 states have internal predecessors, (1572), 13 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2021-11-21 00:04:44,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1283 states to 1283 states and 1598 transitions. [2021-11-21 00:04:44,997 INFO L78 Accepts]: Start accepts. Automaton has 1283 states and 1598 transitions. Word has length 11 [2021-11-21 00:04:44,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:04:44,997 INFO L470 AbstractCegarLoop]: Abstraction has 1283 states and 1598 transitions. [2021-11-21 00:04:44,998 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 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) [2021-11-21 00:04:44,998 INFO L276 IsEmpty]: Start isEmpty. Operand 1283 states and 1598 transitions. [2021-11-21 00:04:44,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-21 00:04:44,999 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:04:44,999 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:04:45,011 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731db8f6-313c-4271-99f0-7f00f50186af/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-21 00:04:45,211 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731db8f6-313c-4271-99f0-7f00f50186af/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 00:04:45,211 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [alt_mallocErr0REQUIRES_VIOLATION, alt_mallocErr1REQUIRES_VIOLATION, alt_freeErr0REQUIRES_VIOLATION, alt_freeErr1REQUIRES_VIOLATION (and 527 more)] === [2021-11-21 00:04:45,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:04:45,212 INFO L85 PathProgramCache]: Analyzing trace with hash 2117571646, now seen corresponding path program 1 times [2021-11-21 00:04:45,212 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 00:04:45,213 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [269541620] [2021-11-21 00:04:45,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:04:45,213 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 00:04:45,213 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731db8f6-313c-4271-99f0-7f00f50186af/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 00:04:45,214 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731db8f6-313c-4271-99f0-7f00f50186af/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 00:04:45,215 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731db8f6-313c-4271-99f0-7f00f50186af/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-21 00:04:45,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:04:45,343 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-21 00:04:45,345 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:04:45,368 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:04:45,369 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:04:45,370 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:04:45,438 INFO L354 Elim1Store]: treesize reduction 166, result has 13.5 percent of original size [2021-11-21 00:04:45,438 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 3 case distinctions, treesize of input 30 treesize of output 36 [2021-11-21 00:04:45,498 INFO L354 Elim1Store]: treesize reduction 66, result has 1.5 percent of original size [2021-11-21 00:04:45,499 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 67 treesize of output 23 [2021-11-21 00:04:45,533 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:04:45,533 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 00:04:45,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:04:45,606 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 00:04:45,606 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [269541620] [2021-11-21 00:04:45,606 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [269541620] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 00:04:45,607 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:04:45,607 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-21 00:04:45,607 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271265360] [2021-11-21 00:04:45,607 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 00:04:45,608 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-21 00:04:45,608 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 00:04:45,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-21 00:04:45,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-21 00:04:45,608 INFO L87 Difference]: Start difference. First operand 1283 states and 1598 transitions. Second operand has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:04:47,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:04:47,994 INFO L93 Difference]: Finished difference Result 1643 states and 2022 transitions. [2021-11-21 00:04:47,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-21 00:04:47,996 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-11-21 00:04:47,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:04:48,004 INFO L225 Difference]: With dead ends: 1643 [2021-11-21 00:04:48,004 INFO L226 Difference]: Without dead ends: 1643 [2021-11-21 00:04:48,005 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-21 00:04:48,006 INFO L933 BasicCegarLoop]: 1033 mSDtfsCounter, 354 mSDsluCounter, 2829 mSDsCounter, 0 mSdLazyCounter, 432 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 359 SdHoareTripleChecker+Valid, 3862 SdHoareTripleChecker+Invalid, 434 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 432 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2021-11-21 00:04:48,006 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [359 Valid, 3862 Invalid, 434 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 432 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2021-11-21 00:04:48,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1643 states. [2021-11-21 00:04:48,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1643 to 1282. [2021-11-21 00:04:48,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1282 states, 811 states have (on average 1.935881627620222) internal successors, (1570), 1265 states have internal predecessors, (1570), 13 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2021-11-21 00:04:48,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1282 states to 1282 states and 1596 transitions. [2021-11-21 00:04:48,043 INFO L78 Accepts]: Start accepts. Automaton has 1282 states and 1596 transitions. Word has length 14 [2021-11-21 00:04:48,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:04:48,044 INFO L470 AbstractCegarLoop]: Abstraction has 1282 states and 1596 transitions. [2021-11-21 00:04:48,044 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:04:48,044 INFO L276 IsEmpty]: Start isEmpty. Operand 1282 states and 1596 transitions. [2021-11-21 00:04:48,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-11-21 00:04:48,045 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:04:48,045 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:04:48,076 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731db8f6-313c-4271-99f0-7f00f50186af/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-21 00:04:48,258 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731db8f6-313c-4271-99f0-7f00f50186af/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 00:04:48,258 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATION === [alt_mallocErr0REQUIRES_VIOLATION, alt_mallocErr1REQUIRES_VIOLATION, alt_freeErr0REQUIRES_VIOLATION, alt_freeErr1REQUIRES_VIOLATION (and 527 more)] === [2021-11-21 00:04:48,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:04:48,259 INFO L85 PathProgramCache]: Analyzing trace with hash 769788685, now seen corresponding path program 1 times [2021-11-21 00:04:48,259 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 00:04:48,259 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [879337563] [2021-11-21 00:04:48,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:04:48,259 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 00:04:48,259 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731db8f6-313c-4271-99f0-7f00f50186af/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 00:04:48,260 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731db8f6-313c-4271-99f0-7f00f50186af/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 00:04:48,261 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731db8f6-313c-4271-99f0-7f00f50186af/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-21 00:04:48,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:04:48,410 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-21 00:04:48,411 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:04:48,451 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:04:48,452 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 00:04:48,483 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:04:48,483 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 00:04:48,484 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [879337563] [2021-11-21 00:04:48,484 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [879337563] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 00:04:48,484 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:04:48,484 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-21 00:04:48,484 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872289521] [2021-11-21 00:04:48,484 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 00:04:48,484 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 00:04:48,484 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 00:04:48,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 00:04:48,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-21 00:04:48,485 INFO L87 Difference]: Start difference. First operand 1282 states and 1596 transitions. Second operand has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:04:48,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:04:48,520 INFO L93 Difference]: Finished difference Result 1222 states and 1510 transitions. [2021-11-21 00:04:48,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 00:04:48,521 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-11-21 00:04:48,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:04:48,527 INFO L225 Difference]: With dead ends: 1222 [2021-11-21 00:04:48,528 INFO L226 Difference]: Without dead ends: 1222 [2021-11-21 00:04:48,528 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-21 00:04:48,529 INFO L933 BasicCegarLoop]: 1021 mSDtfsCounter, 951 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 963 SdHoareTripleChecker+Valid, 1155 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-21 00:04:48,529 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [963 Valid, 1155 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-21 00:04:48,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1222 states. [2021-11-21 00:04:48,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1222 to 1222. [2021-11-21 00:04:48,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1222 states, 775 states have (on average 1.9148387096774193) internal successors, (1484), 1205 states have internal predecessors, (1484), 13 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2021-11-21 00:04:48,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1222 states to 1222 states and 1510 transitions. [2021-11-21 00:04:48,560 INFO L78 Accepts]: Start accepts. Automaton has 1222 states and 1510 transitions. Word has length 19 [2021-11-21 00:04:48,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:04:48,560 INFO L470 AbstractCegarLoop]: Abstraction has 1222 states and 1510 transitions. [2021-11-21 00:04:48,561 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:04:48,561 INFO L276 IsEmpty]: Start isEmpty. Operand 1222 states and 1510 transitions. [2021-11-21 00:04:48,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-21 00:04:48,562 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:04:48,562 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:04:48,580 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731db8f6-313c-4271-99f0-7f00f50186af/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-21 00:04:48,773 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731db8f6-313c-4271-99f0-7f00f50186af/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 00:04:48,774 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr38REQUIRES_VIOLATION === [alt_mallocErr0REQUIRES_VIOLATION, alt_mallocErr1REQUIRES_VIOLATION, alt_freeErr0REQUIRES_VIOLATION, alt_freeErr1REQUIRES_VIOLATION (and 527 more)] === [2021-11-21 00:04:48,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:04:48,775 INFO L85 PathProgramCache]: Analyzing trace with hash 1032548102, now seen corresponding path program 1 times [2021-11-21 00:04:48,776 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 00:04:48,776 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [439713219] [2021-11-21 00:04:48,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:04:48,776 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 00:04:48,776 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731db8f6-313c-4271-99f0-7f00f50186af/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 00:04:48,777 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731db8f6-313c-4271-99f0-7f00f50186af/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 00:04:48,816 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731db8f6-313c-4271-99f0-7f00f50186af/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-21 00:04:48,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:04:48,946 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-21 00:04:48,948 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:04:49,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:04:49,002 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 00:04:49,047 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:04:49,047 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 00:04:49,048 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [439713219] [2021-11-21 00:04:49,048 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [439713219] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 00:04:49,048 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:04:49,048 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-21 00:04:49,048 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392725585] [2021-11-21 00:04:49,048 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 00:04:49,049 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 00:04:49,049 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 00:04:49,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 00:04:49,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-21 00:04:49,050 INFO L87 Difference]: Start difference. First operand 1222 states and 1510 transitions. Second operand has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 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) [2021-11-21 00:04:49,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:04:49,149 INFO L93 Difference]: Finished difference Result 1194 states and 1454 transitions. [2021-11-21 00:04:49,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-21 00:04:49,150 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 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 21 [2021-11-21 00:04:49,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:04:49,158 INFO L225 Difference]: With dead ends: 1194 [2021-11-21 00:04:49,158 INFO L226 Difference]: Without dead ends: 1194 [2021-11-21 00:04:49,158 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-21 00:04:49,159 INFO L933 BasicCegarLoop]: 976 mSDtfsCounter, 922 mSDsluCounter, 1103 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 934 SdHoareTripleChecker+Valid, 2079 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-21 00:04:49,160 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [934 Valid, 2079 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-21 00:04:49,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1194 states. [2021-11-21 00:04:49,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1194 to 1192. [2021-11-21 00:04:49,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1192 states, 759 states have (on average 1.878787878787879) internal successors, (1426), 1175 states have internal predecessors, (1426), 13 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2021-11-21 00:04:49,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1192 states to 1192 states and 1452 transitions. [2021-11-21 00:04:49,193 INFO L78 Accepts]: Start accepts. Automaton has 1192 states and 1452 transitions. Word has length 21 [2021-11-21 00:04:49,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:04:49,193 INFO L470 AbstractCegarLoop]: Abstraction has 1192 states and 1452 transitions. [2021-11-21 00:04:49,193 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 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) [2021-11-21 00:04:49,194 INFO L276 IsEmpty]: Start isEmpty. Operand 1192 states and 1452 transitions. [2021-11-21 00:04:49,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-11-21 00:04:49,195 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:04:49,195 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:04:49,211 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731db8f6-313c-4271-99f0-7f00f50186af/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-21 00:04:49,407 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731db8f6-313c-4271-99f0-7f00f50186af/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 00:04:49,407 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr52REQUIRES_VIOLATION === [alt_mallocErr0REQUIRES_VIOLATION, alt_mallocErr1REQUIRES_VIOLATION, alt_freeErr0REQUIRES_VIOLATION, alt_freeErr1REQUIRES_VIOLATION (and 527 more)] === [2021-11-21 00:04:49,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:04:49,408 INFO L85 PathProgramCache]: Analyzing trace with hash 1673308372, now seen corresponding path program 1 times [2021-11-21 00:04:49,408 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 00:04:49,408 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1815790593] [2021-11-21 00:04:49,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:04:49,409 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 00:04:49,409 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731db8f6-313c-4271-99f0-7f00f50186af/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 00:04:49,410 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731db8f6-313c-4271-99f0-7f00f50186af/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 00:04:49,412 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731db8f6-313c-4271-99f0-7f00f50186af/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-21 00:04:49,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:04:49,561 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-21 00:04:49,563 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:04:49,573 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-21 00:04:49,714 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:04:49,715 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 00:04:49,841 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:04:49,842 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 00:04:49,842 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1815790593] [2021-11-21 00:04:49,842 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1815790593] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 00:04:49,842 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:04:49,842 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-21 00:04:49,842 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805506661] [2021-11-21 00:04:49,843 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 00:04:49,845 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 00:04:49,845 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 00:04:49,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 00:04:49,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 00:04:49,846 INFO L87 Difference]: Start difference. First operand 1192 states and 1452 transitions. Second operand has 5 states, 4 states have (on average 8.75) internal successors, (35), 5 states have internal predecessors, (35), 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) [2021-11-21 00:04:53,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:04:53,473 INFO L93 Difference]: Finished difference Result 2165 states and 2643 transitions. [2021-11-21 00:04:53,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-21 00:04:53,475 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 8.75) internal successors, (35), 5 states have internal predecessors, (35), 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 35 [2021-11-21 00:04:53,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:04:53,485 INFO L225 Difference]: With dead ends: 2165 [2021-11-21 00:04:53,486 INFO L226 Difference]: Without dead ends: 2165 [2021-11-21 00:04:53,486 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-21 00:04:53,487 INFO L933 BasicCegarLoop]: 827 mSDtfsCounter, 2017 mSDsluCounter, 1161 mSDsCounter, 0 mSdLazyCounter, 1841 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2020 SdHoareTripleChecker+Valid, 1988 SdHoareTripleChecker+Invalid, 1860 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 1841 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2021-11-21 00:04:53,487 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2020 Valid, 1988 Invalid, 1860 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 1841 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2021-11-21 00:04:53,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2165 states. [2021-11-21 00:04:53,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2165 to 1188. [2021-11-21 00:04:53,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1188 states, 759 states have (on average 1.8682476943346509) internal successors, (1418), 1171 states have internal predecessors, (1418), 13 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2021-11-21 00:04:53,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1188 states to 1188 states and 1444 transitions. [2021-11-21 00:04:53,525 INFO L78 Accepts]: Start accepts. Automaton has 1188 states and 1444 transitions. Word has length 35 [2021-11-21 00:04:53,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:04:53,525 INFO L470 AbstractCegarLoop]: Abstraction has 1188 states and 1444 transitions. [2021-11-21 00:04:53,525 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 8.75) internal successors, (35), 5 states have internal predecessors, (35), 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) [2021-11-21 00:04:53,526 INFO L276 IsEmpty]: Start isEmpty. Operand 1188 states and 1444 transitions. [2021-11-21 00:04:53,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-11-21 00:04:53,542 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:04:53,542 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:04:53,558 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731db8f6-313c-4271-99f0-7f00f50186af/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-21 00:04:53,755 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731db8f6-313c-4271-99f0-7f00f50186af/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 00:04:53,755 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr53REQUIRES_VIOLATION === [alt_mallocErr0REQUIRES_VIOLATION, alt_mallocErr1REQUIRES_VIOLATION, alt_freeErr0REQUIRES_VIOLATION, alt_freeErr1REQUIRES_VIOLATION (and 527 more)] === [2021-11-21 00:04:53,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:04:53,755 INFO L85 PathProgramCache]: Analyzing trace with hash 1673308373, now seen corresponding path program 1 times [2021-11-21 00:04:53,756 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 00:04:53,756 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1081073226] [2021-11-21 00:04:53,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:04:53,756 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 00:04:53,757 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731db8f6-313c-4271-99f0-7f00f50186af/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 00:04:53,758 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731db8f6-313c-4271-99f0-7f00f50186af/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 00:04:53,763 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731db8f6-313c-4271-99f0-7f00f50186af/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-21 00:04:53,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:04:53,914 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-21 00:04:53,917 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:04:53,947 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-21 00:04:54,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:04:54,253 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 00:04:54,876 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:04:54,876 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 00:04:54,876 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1081073226] [2021-11-21 00:04:54,876 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1081073226] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 00:04:54,877 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:04:54,877 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-11-21 00:04:54,877 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595450553] [2021-11-21 00:04:54,877 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 00:04:54,878 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-21 00:04:54,878 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 00:04:54,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-21 00:04:54,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-21 00:04:54,879 INFO L87 Difference]: Start difference. First operand 1188 states and 1444 transitions. Second operand has 8 states, 7 states have (on average 9.428571428571429) internal successors, (66), 8 states have internal predecessors, (66), 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) [2021-11-21 00:05:04,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:05:04,798 INFO L93 Difference]: Finished difference Result 1795 states and 2203 transitions. [2021-11-21 00:05:04,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-21 00:05:04,799 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 9.428571428571429) internal successors, (66), 8 states have internal predecessors, (66), 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 35 [2021-11-21 00:05:04,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:05:04,807 INFO L225 Difference]: With dead ends: 1795 [2021-11-21 00:05:04,807 INFO L226 Difference]: Without dead ends: 1795 [2021-11-21 00:05:04,808 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2021-11-21 00:05:04,808 INFO L933 BasicCegarLoop]: 1231 mSDtfsCounter, 1770 mSDsluCounter, 2725 mSDsCounter, 0 mSdLazyCounter, 2919 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1770 SdHoareTripleChecker+Valid, 3956 SdHoareTripleChecker+Invalid, 2940 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 2919 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.7s IncrementalHoareTripleChecker+Time [2021-11-21 00:05:04,809 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1770 Valid, 3956 Invalid, 2940 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 2919 Invalid, 0 Unknown, 0 Unchecked, 9.7s Time] [2021-11-21 00:05:04,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1795 states. [2021-11-21 00:05:04,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1795 to 1184. [2021-11-21 00:05:04,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1184 states, 759 states have (on average 1.8577075098814229) internal successors, (1410), 1167 states have internal predecessors, (1410), 13 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2021-11-21 00:05:04,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1184 states to 1184 states and 1436 transitions. [2021-11-21 00:05:04,838 INFO L78 Accepts]: Start accepts. Automaton has 1184 states and 1436 transitions. Word has length 35 [2021-11-21 00:05:04,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:05:04,838 INFO L470 AbstractCegarLoop]: Abstraction has 1184 states and 1436 transitions. [2021-11-21 00:05:04,839 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 9.428571428571429) internal successors, (66), 8 states have internal predecessors, (66), 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) [2021-11-21 00:05:04,839 INFO L276 IsEmpty]: Start isEmpty. Operand 1184 states and 1436 transitions. [2021-11-21 00:05:04,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-11-21 00:05:04,841 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:05:04,841 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:05:04,868 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731db8f6-313c-4271-99f0-7f00f50186af/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (11)] Ended with exit code 0 [2021-11-21 00:05:05,053 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731db8f6-313c-4271-99f0-7f00f50186af/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 00:05:05,053 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting alt_mallocErr0REQUIRES_VIOLATION === [alt_mallocErr0REQUIRES_VIOLATION, alt_mallocErr1REQUIRES_VIOLATION, alt_freeErr0REQUIRES_VIOLATION, alt_freeErr1REQUIRES_VIOLATION (and 527 more)] === [2021-11-21 00:05:05,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:05:05,053 INFO L85 PathProgramCache]: Analyzing trace with hash -2063927218, now seen corresponding path program 1 times [2021-11-21 00:05:05,054 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 00:05:05,054 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [740067870] [2021-11-21 00:05:05,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:05:05,054 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 00:05:05,055 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731db8f6-313c-4271-99f0-7f00f50186af/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 00:05:05,055 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731db8f6-313c-4271-99f0-7f00f50186af/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 00:05:05,070 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731db8f6-313c-4271-99f0-7f00f50186af/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-21 00:05:05,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:05:05,236 INFO L263 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-21 00:05:05,238 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:05:05,374 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:05:05,374 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 00:05:05,496 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:05:05,496 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 00:05:05,496 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [740067870] [2021-11-21 00:05:05,496 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [740067870] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 00:05:05,497 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:05:05,497 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-21 00:05:05,497 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687826522] [2021-11-21 00:05:05,497 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 00:05:05,497 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 00:05:05,498 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 00:05:05,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 00:05:05,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-21 00:05:05,498 INFO L87 Difference]: Start difference. First operand 1184 states and 1436 transitions. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:05:05,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:05:05,564 INFO L93 Difference]: Finished difference Result 1172 states and 1416 transitions. [2021-11-21 00:05:05,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-21 00:05:05,565 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2021-11-21 00:05:05,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:05:05,571 INFO L225 Difference]: With dead ends: 1172 [2021-11-21 00:05:05,572 INFO L226 Difference]: Without dead ends: 1172 [2021-11-21 00:05:05,572 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-21 00:05:05,573 INFO L933 BasicCegarLoop]: 970 mSDtfsCounter, 898 mSDsluCounter, 1020 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 910 SdHoareTripleChecker+Valid, 1990 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-21 00:05:05,573 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [910 Valid, 1990 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-21 00:05:05,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1172 states. [2021-11-21 00:05:05,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1172 to 1172. [2021-11-21 00:05:05,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1172 states, 747 states have (on average 1.8607764390896921) internal successors, (1390), 1155 states have internal predecessors, (1390), 13 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2021-11-21 00:05:05,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1172 states to 1172 states and 1416 transitions. [2021-11-21 00:05:05,606 INFO L78 Accepts]: Start accepts. Automaton has 1172 states and 1416 transitions. Word has length 54 [2021-11-21 00:05:05,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:05:05,607 INFO L470 AbstractCegarLoop]: Abstraction has 1172 states and 1416 transitions. [2021-11-21 00:05:05,607 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:05:05,607 INFO L276 IsEmpty]: Start isEmpty. Operand 1172 states and 1416 transitions. [2021-11-21 00:05:05,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-11-21 00:05:05,610 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:05:05,611 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:05:05,624 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731db8f6-313c-4271-99f0-7f00f50186af/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-21 00:05:05,823 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731db8f6-313c-4271-99f0-7f00f50186af/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 00:05:05,823 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting alt_mallocErr0REQUIRES_VIOLATION === [alt_mallocErr0REQUIRES_VIOLATION, alt_mallocErr1REQUIRES_VIOLATION, alt_freeErr0REQUIRES_VIOLATION, alt_freeErr1REQUIRES_VIOLATION (and 527 more)] === [2021-11-21 00:05:05,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:05:05,824 INFO L85 PathProgramCache]: Analyzing trace with hash -203140862, now seen corresponding path program 1 times [2021-11-21 00:05:05,824 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 00:05:05,825 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [70233886] [2021-11-21 00:05:05,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:05:05,825 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 00:05:05,825 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731db8f6-313c-4271-99f0-7f00f50186af/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 00:05:05,826 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731db8f6-313c-4271-99f0-7f00f50186af/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 00:05:05,828 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731db8f6-313c-4271-99f0-7f00f50186af/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-21 00:05:06,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:05:06,128 INFO L263 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-21 00:05:06,131 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:05:06,174 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-11-21 00:05:06,174 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 21 [2021-11-21 00:05:06,320 INFO L354 Elim1Store]: treesize reduction 30, result has 36.2 percent of original size [2021-11-21 00:05:06,320 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 44 [2021-11-21 00:05:07,039 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:05:07,039 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 00:05:07,398 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:05:07,398 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 00:05:07,398 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [70233886] [2021-11-21 00:05:07,398 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [70233886] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 00:05:07,398 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:05:07,398 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 6 [2021-11-21 00:05:07,399 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649427745] [2021-11-21 00:05:07,399 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 00:05:07,399 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-21 00:05:07,399 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 00:05:07,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-21 00:05:07,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2021-11-21 00:05:07,400 INFO L87 Difference]: Start difference. First operand 1172 states and 1416 transitions. Second operand has 8 states, 7 states have (on average 17.428571428571427) internal successors, (122), 7 states have internal predecessors, (122), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:05:09,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:05:09,889 INFO L93 Difference]: Finished difference Result 1512 states and 1775 transitions. [2021-11-21 00:05:09,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-21 00:05:09,890 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 17.428571428571427) internal successors, (122), 7 states have internal predecessors, (122), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2021-11-21 00:05:09,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:05:09,898 INFO L225 Difference]: With dead ends: 1512 [2021-11-21 00:05:09,898 INFO L226 Difference]: Without dead ends: 1512 [2021-11-21 00:05:09,898 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 112 SyntacticMatches, 4 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2021-11-21 00:05:09,899 INFO L933 BasicCegarLoop]: 838 mSDtfsCounter, 419 mSDsluCounter, 1153 mSDsCounter, 0 mSdLazyCounter, 764 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 422 SdHoareTripleChecker+Valid, 1991 SdHoareTripleChecker+Invalid, 1587 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 764 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 806 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2021-11-21 00:05:09,899 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [422 Valid, 1991 Invalid, 1587 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 764 Invalid, 0 Unknown, 806 Unchecked, 2.4s Time] [2021-11-21 00:05:09,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1512 states. [2021-11-21 00:05:09,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1512 to 1189. [2021-11-21 00:05:09,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1189 states, 760 states have (on average 1.85) internal successors, (1406), 1169 states have internal predecessors, (1406), 14 states have call successors, (14), 6 states have call predecessors, (14), 7 states have return successors, (18), 13 states have call predecessors, (18), 14 states have call successors, (18) [2021-11-21 00:05:09,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1189 states to 1189 states and 1438 transitions. [2021-11-21 00:05:09,947 INFO L78 Accepts]: Start accepts. Automaton has 1189 states and 1438 transitions. Word has length 62 [2021-11-21 00:05:09,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:05:09,947 INFO L470 AbstractCegarLoop]: Abstraction has 1189 states and 1438 transitions. [2021-11-21 00:05:09,948 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 17.428571428571427) internal successors, (122), 7 states have internal predecessors, (122), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:05:09,948 INFO L276 IsEmpty]: Start isEmpty. Operand 1189 states and 1438 transitions. [2021-11-21 00:05:09,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-11-21 00:05:09,956 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:05:09,956 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:05:09,981 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731db8f6-313c-4271-99f0-7f00f50186af/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-21 00:05:10,173 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731db8f6-313c-4271-99f0-7f00f50186af/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 00:05:10,173 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting alt_mallocErr1REQUIRES_VIOLATION === [alt_mallocErr0REQUIRES_VIOLATION, alt_mallocErr1REQUIRES_VIOLATION, alt_freeErr0REQUIRES_VIOLATION, alt_freeErr1REQUIRES_VIOLATION (and 527 more)] === [2021-11-21 00:05:10,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:05:10,174 INFO L85 PathProgramCache]: Analyzing trace with hash -203140861, now seen corresponding path program 1 times [2021-11-21 00:05:10,174 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 00:05:10,174 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1461355851] [2021-11-21 00:05:10,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:05:10,175 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 00:05:10,175 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731db8f6-313c-4271-99f0-7f00f50186af/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 00:05:10,176 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731db8f6-313c-4271-99f0-7f00f50186af/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 00:05:10,177 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731db8f6-313c-4271-99f0-7f00f50186af/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-21 00:05:10,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:05:10,510 INFO L263 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-21 00:05:10,512 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:05:10,566 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-21 00:05:10,567 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 29 [2021-11-21 00:05:10,584 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-21 00:05:10,584 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 22 [2021-11-21 00:05:10,746 INFO L354 Elim1Store]: treesize reduction 28, result has 40.4 percent of original size [2021-11-21 00:05:10,747 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 17 treesize of output 30 [2021-11-21 00:05:16,465 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:05:16,466 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 00:05:18,567 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:05:18,568 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 00:05:18,568 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1461355851] [2021-11-21 00:05:18,568 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1461355851] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 00:05:18,568 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:05:18,568 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 4] imperfect sequences [] total 9 [2021-11-21 00:05:18,568 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600041624] [2021-11-21 00:05:18,568 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 00:05:18,569 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-21 00:05:18,569 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 00:05:18,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-21 00:05:18,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2021-11-21 00:05:18,570 INFO L87 Difference]: Start difference. First operand 1189 states and 1438 transitions. Second operand has 11 states, 10 states have (on average 12.2) internal successors, (122), 10 states have internal predecessors, (122), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:05:20,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:05:20,822 INFO L93 Difference]: Finished difference Result 1189 states and 1437 transitions. [2021-11-21 00:05:20,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-21 00:05:20,823 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 12.2) internal successors, (122), 10 states have internal predecessors, (122), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2021-11-21 00:05:20,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:05:20,828 INFO L225 Difference]: With dead ends: 1189 [2021-11-21 00:05:20,828 INFO L226 Difference]: Without dead ends: 1189 [2021-11-21 00:05:20,828 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2021-11-21 00:05:20,829 INFO L933 BasicCegarLoop]: 952 mSDtfsCounter, 78 mSDsluCounter, 3662 mSDsCounter, 0 mSdLazyCounter, 633 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 4614 SdHoareTripleChecker+Invalid, 3077 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 633 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2443 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2021-11-21 00:05:20,829 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [78 Valid, 4614 Invalid, 3077 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 633 Invalid, 0 Unknown, 2443 Unchecked, 2.2s Time] [2021-11-21 00:05:20,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1189 states. [2021-11-21 00:05:20,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1189 to 1189. [2021-11-21 00:05:20,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1189 states, 760 states have (on average 1.8486842105263157) internal successors, (1405), 1169 states have internal predecessors, (1405), 14 states have call successors, (14), 6 states have call predecessors, (14), 7 states have return successors, (18), 13 states have call predecessors, (18), 14 states have call successors, (18) [2021-11-21 00:05:20,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1189 states to 1189 states and 1437 transitions. [2021-11-21 00:05:20,853 INFO L78 Accepts]: Start accepts. Automaton has 1189 states and 1437 transitions. Word has length 62 [2021-11-21 00:05:20,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:05:20,853 INFO L470 AbstractCegarLoop]: Abstraction has 1189 states and 1437 transitions. [2021-11-21 00:05:20,854 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 12.2) internal successors, (122), 10 states have internal predecessors, (122), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:05:20,854 INFO L276 IsEmpty]: Start isEmpty. Operand 1189 states and 1437 transitions. [2021-11-21 00:05:20,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-11-21 00:05:20,854 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:05:20,855 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:05:20,872 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731db8f6-313c-4271-99f0-7f00f50186af/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (14)] Ended with exit code 0 [2021-11-21 00:05:21,068 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731db8f6-313c-4271-99f0-7f00f50186af/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 00:05:21,069 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [alt_mallocErr0REQUIRES_VIOLATION, alt_mallocErr1REQUIRES_VIOLATION, alt_freeErr0REQUIRES_VIOLATION, alt_freeErr1REQUIRES_VIOLATION (and 527 more)] === [2021-11-21 00:05:21,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:05:21,069 INFO L85 PathProgramCache]: Analyzing trace with hash -1864793253, now seen corresponding path program 1 times [2021-11-21 00:05:21,070 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 00:05:21,070 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1688915494] [2021-11-21 00:05:21,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:05:21,071 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 00:05:21,071 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731db8f6-313c-4271-99f0-7f00f50186af/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 00:05:21,072 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731db8f6-313c-4271-99f0-7f00f50186af/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 00:05:21,087 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731db8f6-313c-4271-99f0-7f00f50186af/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-21 00:05:21,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:05:21,320 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-21 00:05:21,322 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:05:21,474 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:05:21,474 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 00:05:21,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:05:21,605 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 00:05:21,605 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1688915494] [2021-11-21 00:05:21,605 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1688915494] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 00:05:21,605 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:05:21,605 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 8 [2021-11-21 00:05:21,606 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191535620] [2021-11-21 00:05:21,606 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 00:05:21,607 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-21 00:05:21,607 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 00:05:21,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-21 00:05:21,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-21 00:05:21,608 INFO L87 Difference]: Start difference. First operand 1189 states and 1437 transitions. Second operand has 8 states, 8 states have (on average 8.5) internal successors, (68), 5 states have internal predecessors, (68), 2 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:05:21,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:05:21,764 INFO L93 Difference]: Finished difference Result 1206 states and 1453 transitions. [2021-11-21 00:05:21,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-21 00:05:21,765 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.5) internal successors, (68), 5 states have internal predecessors, (68), 2 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2021-11-21 00:05:21,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:05:21,770 INFO L225 Difference]: With dead ends: 1206 [2021-11-21 00:05:21,770 INFO L226 Difference]: Without dead ends: 1206 [2021-11-21 00:05:21,770 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2021-11-21 00:05:21,771 INFO L933 BasicCegarLoop]: 968 mSDtfsCounter, 22 mSDsluCounter, 4828 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 5796 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-21 00:05:21,771 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 5796 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-21 00:05:21,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1206 states. [2021-11-21 00:05:21,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1206 to 1201. [2021-11-21 00:05:21,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1201 states, 769 states have (on average 1.8426527958387515) internal successors, (1417), 1179 states have internal predecessors, (1417), 15 states have call successors, (15), 8 states have call predecessors, (15), 9 states have return successors, (17), 14 states have call predecessors, (17), 15 states have call successors, (17) [2021-11-21 00:05:21,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1201 states to 1201 states and 1449 transitions. [2021-11-21 00:05:21,795 INFO L78 Accepts]: Start accepts. Automaton has 1201 states and 1449 transitions. Word has length 68 [2021-11-21 00:05:21,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:05:21,796 INFO L470 AbstractCegarLoop]: Abstraction has 1201 states and 1449 transitions. [2021-11-21 00:05:21,796 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.5) internal successors, (68), 5 states have internal predecessors, (68), 2 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:05:21,796 INFO L276 IsEmpty]: Start isEmpty. Operand 1201 states and 1449 transitions. [2021-11-21 00:05:21,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-11-21 00:05:21,797 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:05:21,797 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:05:21,814 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731db8f6-313c-4271-99f0-7f00f50186af/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-11-21 00:05:22,010 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731db8f6-313c-4271-99f0-7f00f50186af/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 00:05:22,010 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATION === [alt_mallocErr0REQUIRES_VIOLATION, alt_mallocErr1REQUIRES_VIOLATION, alt_freeErr0REQUIRES_VIOLATION, alt_freeErr1REQUIRES_VIOLATION (and 527 more)] === [2021-11-21 00:05:22,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:05:22,011 INFO L85 PathProgramCache]: Analyzing trace with hash -1913615011, now seen corresponding path program 1 times [2021-11-21 00:05:22,012 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 00:05:22,012 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1560225800] [2021-11-21 00:05:22,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:05:22,012 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 00:05:22,012 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731db8f6-313c-4271-99f0-7f00f50186af/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 00:05:22,013 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731db8f6-313c-4271-99f0-7f00f50186af/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 00:05:22,054 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731db8f6-313c-4271-99f0-7f00f50186af/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-21 00:05:22,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:05:22,269 INFO L263 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-21 00:05:22,271 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:05:22,546 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:05:22,546 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 00:05:22,875 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:05:22,876 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 00:05:22,876 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1560225800] [2021-11-21 00:05:22,876 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1560225800] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 00:05:22,876 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:05:22,876 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-21 00:05:22,876 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764949970] [2021-11-21 00:05:22,876 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 00:05:22,877 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-21 00:05:22,877 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 00:05:22,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-21 00:05:22,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-21 00:05:22,878 INFO L87 Difference]: Start difference. First operand 1201 states and 1449 transitions. Second operand has 9 states, 9 states have (on average 8.0) internal successors, (72), 6 states have internal predecessors, (72), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-21 00:05:23,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:05:23,226 INFO L93 Difference]: Finished difference Result 1242 states and 1493 transitions. [2021-11-21 00:05:23,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-21 00:05:23,227 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.0) internal successors, (72), 6 states have internal predecessors, (72), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 68 [2021-11-21 00:05:23,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:05:23,236 INFO L225 Difference]: With dead ends: 1242 [2021-11-21 00:05:23,236 INFO L226 Difference]: Without dead ends: 1239 [2021-11-21 00:05:23,237 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-11-21 00:05:23,237 INFO L933 BasicCegarLoop]: 967 mSDtfsCounter, 127 mSDsluCounter, 5626 mSDsCounter, 0 mSdLazyCounter, 195 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 6593 SdHoareTripleChecker+Invalid, 214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-21 00:05:23,238 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [129 Valid, 6593 Invalid, 214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 195 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-21 00:05:23,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1239 states. [2021-11-21 00:05:23,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1239 to 1198. [2021-11-21 00:05:23,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1198 states, 767 states have (on average 1.8435462842242503) internal successors, (1414), 1176 states have internal predecessors, (1414), 15 states have call successors, (15), 8 states have call predecessors, (15), 8 states have return successors, (16), 14 states have call predecessors, (16), 15 states have call successors, (16) [2021-11-21 00:05:23,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1198 states to 1198 states and 1445 transitions. [2021-11-21 00:05:23,266 INFO L78 Accepts]: Start accepts. Automaton has 1198 states and 1445 transitions. Word has length 68 [2021-11-21 00:05:23,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:05:23,267 INFO L470 AbstractCegarLoop]: Abstraction has 1198 states and 1445 transitions. [2021-11-21 00:05:23,267 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.0) internal successors, (72), 6 states have internal predecessors, (72), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-21 00:05:23,267 INFO L276 IsEmpty]: Start isEmpty. Operand 1198 states and 1445 transitions. [2021-11-21 00:05:23,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-11-21 00:05:23,268 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:05:23,268 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:05:23,283 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731db8f6-313c-4271-99f0-7f00f50186af/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-21 00:05:23,482 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731db8f6-313c-4271-99f0-7f00f50186af/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 00:05:23,483 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATION === [alt_mallocErr0REQUIRES_VIOLATION, alt_mallocErr1REQUIRES_VIOLATION, alt_freeErr0REQUIRES_VIOLATION, alt_freeErr1REQUIRES_VIOLATION (and 527 more)] === [2021-11-21 00:05:23,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:05:23,483 INFO L85 PathProgramCache]: Analyzing trace with hash 1847999061, now seen corresponding path program 1 times [2021-11-21 00:05:23,484 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 00:05:23,484 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1904492651] [2021-11-21 00:05:23,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:05:23,484 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 00:05:23,484 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731db8f6-313c-4271-99f0-7f00f50186af/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 00:05:23,485 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731db8f6-313c-4271-99f0-7f00f50186af/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 00:05:23,498 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731db8f6-313c-4271-99f0-7f00f50186af/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-21 00:05:23,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:05:23,909 INFO L263 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-21 00:05:23,911 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:05:23,922 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-21 00:05:24,182 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-11-21 00:05:24,182 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 20 [2021-11-21 00:05:24,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:05:24,205 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 00:05:24,608 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:05:24,608 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 00:05:24,608 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1904492651] [2021-11-21 00:05:24,608 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1904492651] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 00:05:24,608 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:05:24,609 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 4] imperfect sequences [] total 6 [2021-11-21 00:05:24,609 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013470388] [2021-11-21 00:05:24,609 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 00:05:24,609 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-21 00:05:24,610 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 00:05:24,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-21 00:05:24,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-21 00:05:24,610 INFO L87 Difference]: Start difference. First operand 1198 states and 1445 transitions. Second operand has 7 states, 6 states have (on average 12.5) internal successors, (75), 7 states have internal predecessors, (75), 3 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2021-11-21 00:05:27,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:05:27,943 INFO L93 Difference]: Finished difference Result 2163 states and 2630 transitions. [2021-11-21 00:05:27,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-21 00:05:27,945 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 12.5) internal successors, (75), 7 states have internal predecessors, (75), 3 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 73 [2021-11-21 00:05:27,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:05:27,967 INFO L225 Difference]: With dead ends: 2163 [2021-11-21 00:05:27,967 INFO L226 Difference]: Without dead ends: 2163 [2021-11-21 00:05:27,967 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 136 SyntacticMatches, 4 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-11-21 00:05:27,968 INFO L933 BasicCegarLoop]: 815 mSDtfsCounter, 1393 mSDsluCounter, 1471 mSDsCounter, 0 mSdLazyCounter, 1374 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1399 SdHoareTripleChecker+Valid, 2286 SdHoareTripleChecker+Invalid, 2302 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 1374 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 922 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2021-11-21 00:05:27,968 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1399 Valid, 2286 Invalid, 2302 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 1374 Invalid, 0 Unknown, 922 Unchecked, 3.3s Time] [2021-11-21 00:05:27,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2163 states. [2021-11-21 00:05:27,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2163 to 1197. [2021-11-21 00:05:27,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1197 states, 767 states have (on average 1.8422425032594525) internal successors, (1413), 1175 states have internal predecessors, (1413), 15 states have call successors, (15), 8 states have call predecessors, (15), 8 states have return successors, (16), 14 states have call predecessors, (16), 15 states have call successors, (16) [2021-11-21 00:05:27,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1197 states to 1197 states and 1444 transitions. [2021-11-21 00:05:28,000 INFO L78 Accepts]: Start accepts. Automaton has 1197 states and 1444 transitions. Word has length 73 [2021-11-21 00:05:28,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:05:28,000 INFO L470 AbstractCegarLoop]: Abstraction has 1197 states and 1444 transitions. [2021-11-21 00:05:28,000 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 12.5) internal successors, (75), 7 states have internal predecessors, (75), 3 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2021-11-21 00:05:28,001 INFO L276 IsEmpty]: Start isEmpty. Operand 1197 states and 1444 transitions. [2021-11-21 00:05:28,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-11-21 00:05:28,001 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:05:28,001 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:05:28,016 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731db8f6-313c-4271-99f0-7f00f50186af/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-11-21 00:05:28,216 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731db8f6-313c-4271-99f0-7f00f50186af/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 00:05:28,216 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr71REQUIRES_VIOLATION === [alt_mallocErr0REQUIRES_VIOLATION, alt_mallocErr1REQUIRES_VIOLATION, alt_freeErr0REQUIRES_VIOLATION, alt_freeErr1REQUIRES_VIOLATION (and 527 more)] === [2021-11-21 00:05:28,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:05:28,217 INFO L85 PathProgramCache]: Analyzing trace with hash 1847999062, now seen corresponding path program 1 times [2021-11-21 00:05:28,217 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 00:05:28,218 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1704967218] [2021-11-21 00:05:28,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:05:28,218 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 00:05:28,218 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731db8f6-313c-4271-99f0-7f00f50186af/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 00:05:28,219 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731db8f6-313c-4271-99f0-7f00f50186af/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 00:05:28,228 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731db8f6-313c-4271-99f0-7f00f50186af/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-11-21 00:05:28,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:05:28,559 INFO L263 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 14 conjunts are in the unsatisfiable core [2021-11-21 00:05:28,561 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:05:28,576 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-21 00:05:28,581 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-21 00:05:31,362 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-21 00:05:31,363 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 28 [2021-11-21 00:05:31,372 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-21 00:05:31,372 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 20 [2021-11-21 00:05:31,398 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:05:31,399 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 00:05:48,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:05:48,278 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 00:05:48,278 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1704967218] [2021-11-21 00:05:48,278 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1704967218] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 00:05:48,279 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:05:48,279 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 11 [2021-11-21 00:05:48,279 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648432113] [2021-11-21 00:05:48,279 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 00:05:48,280 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-21 00:05:48,280 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 00:05:48,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-21 00:05:48,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=99, Unknown=5, NotChecked=0, Total=132 [2021-11-21 00:05:48,281 INFO L87 Difference]: Start difference. First operand 1197 states and 1444 transitions. Second operand has 12 states, 11 states have (on average 11.909090909090908) internal successors, (131), 10 states have internal predecessors, (131), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-21 00:06:00,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:06:00,667 INFO L93 Difference]: Finished difference Result 2206 states and 2735 transitions. [2021-11-21 00:06:00,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-21 00:06:00,669 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 11.909090909090908) internal successors, (131), 10 states have internal predecessors, (131), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 73 [2021-11-21 00:06:00,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:06:00,676 INFO L225 Difference]: With dead ends: 2206 [2021-11-21 00:06:00,677 INFO L226 Difference]: Without dead ends: 2206 [2021-11-21 00:06:00,677 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 12.8s TimeCoverageRelationStatistics Valid=36, Invalid=115, Unknown=5, NotChecked=0, Total=156 [2021-11-21 00:06:00,678 INFO L933 BasicCegarLoop]: 678 mSDtfsCounter, 2398 mSDsluCounter, 3441 mSDsCounter, 0 mSdLazyCounter, 3936 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2409 SdHoareTripleChecker+Valid, 4119 SdHoareTripleChecker+Invalid, 7438 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 3936 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 3442 IncrementalHoareTripleChecker+Unchecked, 10.3s IncrementalHoareTripleChecker+Time [2021-11-21 00:06:00,678 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2409 Valid, 4119 Invalid, 7438 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 3936 Invalid, 0 Unknown, 3442 Unchecked, 10.3s Time] [2021-11-21 00:06:00,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2206 states. [2021-11-21 00:06:00,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2206 to 1165. [2021-11-21 00:06:00,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1165 states, 769 states have (on average 1.7958387516254877) internal successors, (1381), 1143 states have internal predecessors, (1381), 15 states have call successors, (15), 8 states have call predecessors, (15), 8 states have return successors, (16), 14 states have call predecessors, (16), 15 states have call successors, (16) [2021-11-21 00:06:00,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1165 states to 1165 states and 1412 transitions. [2021-11-21 00:06:00,707 INFO L78 Accepts]: Start accepts. Automaton has 1165 states and 1412 transitions. Word has length 73 [2021-11-21 00:06:00,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:06:00,707 INFO L470 AbstractCegarLoop]: Abstraction has 1165 states and 1412 transitions. [2021-11-21 00:06:00,708 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 11.909090909090908) internal successors, (131), 10 states have internal predecessors, (131), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-21 00:06:00,708 INFO L276 IsEmpty]: Start isEmpty. Operand 1165 states and 1412 transitions. [2021-11-21 00:06:00,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-11-21 00:06:00,709 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:06:00,709 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:06:00,728 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731db8f6-313c-4271-99f0-7f00f50186af/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-11-21 00:06:00,924 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731db8f6-313c-4271-99f0-7f00f50186af/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 00:06:00,924 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting alt_bzeroErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE === [alt_mallocErr0REQUIRES_VIOLATION, alt_mallocErr1REQUIRES_VIOLATION, alt_freeErr0REQUIRES_VIOLATION, alt_freeErr1REQUIRES_VIOLATION (and 527 more)] === [2021-11-21 00:06:00,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:06:00,925 INFO L85 PathProgramCache]: Analyzing trace with hash 816968073, now seen corresponding path program 1 times [2021-11-21 00:06:00,925 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 00:06:00,925 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [843127232] [2021-11-21 00:06:00,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:06:00,925 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 00:06:00,926 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731db8f6-313c-4271-99f0-7f00f50186af/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 00:06:00,926 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731db8f6-313c-4271-99f0-7f00f50186af/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 00:06:00,927 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731db8f6-313c-4271-99f0-7f00f50186af/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-11-21 00:06:01,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:06:01,159 INFO L263 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-21 00:06:01,162 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:06:01,265 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-21 00:06:01,288 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 24 treesize of output 20 [2021-11-21 00:06:01,330 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2021-11-21 00:06:01,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:06:01,381 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 00:06:01,612 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:06:01,612 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 00:06:01,612 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [843127232] [2021-11-21 00:06:01,612 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [843127232] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 00:06:01,612 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:06:01,612 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 7 [2021-11-21 00:06:01,615 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942583181] [2021-11-21 00:06:01,615 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 00:06:01,615 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-21 00:06:01,615 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 00:06:01,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-21 00:06:01,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-21 00:06:01,616 INFO L87 Difference]: Start difference. First operand 1165 states and 1412 transitions. Second operand has 8 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-21 00:06:06,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:06:06,576 INFO L93 Difference]: Finished difference Result 1173 states and 1420 transitions. [2021-11-21 00:06:06,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-21 00:06:06,577 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 80 [2021-11-21 00:06:06,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:06:06,580 INFO L225 Difference]: With dead ends: 1173 [2021-11-21 00:06:06,580 INFO L226 Difference]: Without dead ends: 1173 [2021-11-21 00:06:06,581 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 149 SyntacticMatches, 3 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2021-11-21 00:06:06,581 INFO L933 BasicCegarLoop]: 927 mSDtfsCounter, 23 mSDsluCounter, 2943 mSDsCounter, 0 mSdLazyCounter, 2670 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 3870 SdHoareTripleChecker+Invalid, 2672 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 2670 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2021-11-21 00:06:06,582 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [23 Valid, 3870 Invalid, 2672 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 2670 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2021-11-21 00:06:06,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1173 states. [2021-11-21 00:06:06,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1173 to 1172. [2021-11-21 00:06:06,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1172 states, 775 states have (on average 1.792258064516129) internal successors, (1389), 1149 states have internal predecessors, (1389), 15 states have call successors, (15), 9 states have call predecessors, (15), 9 states have return successors, (16), 14 states have call predecessors, (16), 15 states have call successors, (16) [2021-11-21 00:06:06,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1172 states to 1172 states and 1420 transitions. [2021-11-21 00:06:06,603 INFO L78 Accepts]: Start accepts. Automaton has 1172 states and 1420 transitions. Word has length 80 [2021-11-21 00:06:06,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:06:06,604 INFO L470 AbstractCegarLoop]: Abstraction has 1172 states and 1420 transitions. [2021-11-21 00:06:06,604 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-21 00:06:06,604 INFO L276 IsEmpty]: Start isEmpty. Operand 1172 states and 1420 transitions. [2021-11-21 00:06:06,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-11-21 00:06:06,605 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:06:06,605 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:06:06,626 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731db8f6-313c-4271-99f0-7f00f50186af/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-11-21 00:06:06,818 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731db8f6-313c-4271-99f0-7f00f50186af/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 00:06:06,819 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting alt_bzeroErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE === [alt_mallocErr0REQUIRES_VIOLATION, alt_mallocErr1REQUIRES_VIOLATION, alt_freeErr0REQUIRES_VIOLATION, alt_freeErr1REQUIRES_VIOLATION (and 527 more)] === [2021-11-21 00:06:06,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:06:06,819 INFO L85 PathProgramCache]: Analyzing trace with hash -443793445, now seen corresponding path program 1 times [2021-11-21 00:06:06,820 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 00:06:06,820 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [20791441] [2021-11-21 00:06:06,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:06:06,820 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 00:06:06,820 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731db8f6-313c-4271-99f0-7f00f50186af/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 00:06:06,821 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731db8f6-313c-4271-99f0-7f00f50186af/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 00:06:06,831 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731db8f6-313c-4271-99f0-7f00f50186af/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-11-21 00:06:07,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:06:07,072 INFO L263 TraceCheckSpWp]: Trace formula consists of 268 conjuncts, 20 conjunts are in the unsatisfiable core [2021-11-21 00:06:07,089 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:06:07,238 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-21 00:06:07,303 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 19 treesize of output 15 [2021-11-21 00:06:07,312 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-21 00:06:07,372 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 27 [2021-11-21 00:06:07,375 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2021-11-21 00:06:07,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:06:07,523 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 00:06:08,540 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:06:08,540 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 00:06:08,540 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [20791441] [2021-11-21 00:06:08,540 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [20791441] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 00:06:08,540 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:06:08,540 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 15 [2021-11-21 00:06:08,540 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468192758] [2021-11-21 00:06:08,540 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 00:06:08,541 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-21 00:06:08,541 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 00:06:08,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-21 00:06:08,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2021-11-21 00:06:08,542 INFO L87 Difference]: Start difference. First operand 1172 states and 1420 transitions. Second operand has 16 states, 13 states have (on average 6.923076923076923) internal successors, (90), 12 states have internal predecessors, (90), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2021-11-21 00:06:25,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:06:25,651 INFO L93 Difference]: Finished difference Result 1174 states and 1419 transitions. [2021-11-21 00:06:25,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-21 00:06:25,652 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 13 states have (on average 6.923076923076923) internal successors, (90), 12 states have internal predecessors, (90), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) Word has length 81 [2021-11-21 00:06:25,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:06:25,656 INFO L225 Difference]: With dead ends: 1174 [2021-11-21 00:06:25,656 INFO L226 Difference]: Without dead ends: 1174 [2021-11-21 00:06:25,657 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=72, Invalid=390, Unknown=0, NotChecked=0, Total=462 [2021-11-21 00:06:25,657 INFO L933 BasicCegarLoop]: 925 mSDtfsCounter, 53 mSDsluCounter, 4878 mSDsCounter, 0 mSdLazyCounter, 3593 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 5803 SdHoareTripleChecker+Invalid, 3602 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 3593 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.6s IncrementalHoareTripleChecker+Time [2021-11-21 00:06:25,658 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [53 Valid, 5803 Invalid, 3602 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 3593 Invalid, 0 Unknown, 0 Unchecked, 16.6s Time] [2021-11-21 00:06:25,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1174 states. [2021-11-21 00:06:25,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1174 to 1172. [2021-11-21 00:06:25,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1172 states, 775 states have (on average 1.790967741935484) internal successors, (1388), 1149 states have internal predecessors, (1388), 15 states have call successors, (15), 9 states have call predecessors, (15), 9 states have return successors, (16), 14 states have call predecessors, (16), 15 states have call successors, (16) [2021-11-21 00:06:25,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1172 states to 1172 states and 1419 transitions. [2021-11-21 00:06:25,676 INFO L78 Accepts]: Start accepts. Automaton has 1172 states and 1419 transitions. Word has length 81 [2021-11-21 00:06:25,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:06:25,677 INFO L470 AbstractCegarLoop]: Abstraction has 1172 states and 1419 transitions. [2021-11-21 00:06:25,677 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 13 states have (on average 6.923076923076923) internal successors, (90), 12 states have internal predecessors, (90), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2021-11-21 00:06:25,677 INFO L276 IsEmpty]: Start isEmpty. Operand 1172 states and 1419 transitions. [2021-11-21 00:06:25,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-11-21 00:06:25,678 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:06:25,678 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:06:25,692 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731db8f6-313c-4271-99f0-7f00f50186af/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-11-21 00:06:25,892 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731db8f6-313c-4271-99f0-7f00f50186af/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 00:06:25,892 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr78REQUIRES_VIOLATION === [alt_mallocErr0REQUIRES_VIOLATION, alt_mallocErr1REQUIRES_VIOLATION, alt_freeErr0REQUIRES_VIOLATION, alt_freeErr1REQUIRES_VIOLATION (and 527 more)] === [2021-11-21 00:06:25,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:06:25,893 INFO L85 PathProgramCache]: Analyzing trace with hash 540063607, now seen corresponding path program 1 times [2021-11-21 00:06:25,893 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 00:06:25,893 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1236710806] [2021-11-21 00:06:25,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:06:25,894 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 00:06:25,894 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731db8f6-313c-4271-99f0-7f00f50186af/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 00:06:25,894 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731db8f6-313c-4271-99f0-7f00f50186af/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 00:06:25,896 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731db8f6-313c-4271-99f0-7f00f50186af/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-11-21 00:06:26,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:06:26,121 INFO L263 TraceCheckSpWp]: Trace formula consists of 285 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-21 00:06:26,123 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:06:26,281 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:06:26,281 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 00:06:26,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:06:26,527 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 00:06:26,528 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1236710806] [2021-11-21 00:06:26,528 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1236710806] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 00:06:26,528 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:06:26,528 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-21 00:06:26,528 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427455864] [2021-11-21 00:06:26,528 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 00:06:26,529 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-21 00:06:26,529 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 00:06:26,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-21 00:06:26,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-11-21 00:06:26,530 INFO L87 Difference]: Start difference. First operand 1172 states and 1419 transitions. Second operand has 8 states, 8 states have (on average 11.0) internal successors, (88), 8 states have internal predecessors, (88), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2021-11-21 00:06:26,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:06:26,698 INFO L93 Difference]: Finished difference Result 1184 states and 1432 transitions. [2021-11-21 00:06:26,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-21 00:06:26,699 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.0) internal successors, (88), 8 states have internal predecessors, (88), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 88 [2021-11-21 00:06:26,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:06:26,702 INFO L225 Difference]: With dead ends: 1184 [2021-11-21 00:06:26,703 INFO L226 Difference]: Without dead ends: 1178 [2021-11-21 00:06:26,703 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=76, Unknown=0, NotChecked=0, Total=132 [2021-11-21 00:06:26,704 INFO L933 BasicCegarLoop]: 931 mSDtfsCounter, 32 mSDsluCounter, 1859 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 2790 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-21 00:06:26,704 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [32 Valid, 2790 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-21 00:06:26,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1178 states. [2021-11-21 00:06:26,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1178 to 1178. [2021-11-21 00:06:26,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1178 states, 780 states have (on average 1.7871794871794873) internal successors, (1394), 1155 states have internal predecessors, (1394), 15 states have call successors, (15), 9 states have call predecessors, (15), 10 states have return successors, (17), 14 states have call predecessors, (17), 15 states have call successors, (17) [2021-11-21 00:06:26,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1178 states to 1178 states and 1426 transitions. [2021-11-21 00:06:26,725 INFO L78 Accepts]: Start accepts. Automaton has 1178 states and 1426 transitions. Word has length 88 [2021-11-21 00:06:26,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:06:26,725 INFO L470 AbstractCegarLoop]: Abstraction has 1178 states and 1426 transitions. [2021-11-21 00:06:26,725 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.0) internal successors, (88), 8 states have internal predecessors, (88), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2021-11-21 00:06:26,726 INFO L276 IsEmpty]: Start isEmpty. Operand 1178 states and 1426 transitions. [2021-11-21 00:06:26,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-11-21 00:06:26,727 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:06:26,727 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:06:26,756 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731db8f6-313c-4271-99f0-7f00f50186af/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2021-11-21 00:06:26,939 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731db8f6-313c-4271-99f0-7f00f50186af/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 00:06:26,940 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr78REQUIRES_VIOLATION === [alt_mallocErr0REQUIRES_VIOLATION, alt_mallocErr1REQUIRES_VIOLATION, alt_freeErr0REQUIRES_VIOLATION, alt_freeErr1REQUIRES_VIOLATION (and 527 more)] === [2021-11-21 00:06:26,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:06:26,940 INFO L85 PathProgramCache]: Analyzing trace with hash 1673703735, now seen corresponding path program 1 times [2021-11-21 00:06:26,940 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 00:06:26,941 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1116936400] [2021-11-21 00:06:26,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:06:26,941 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 00:06:26,941 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731db8f6-313c-4271-99f0-7f00f50186af/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 00:06:26,941 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731db8f6-313c-4271-99f0-7f00f50186af/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 00:06:26,943 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731db8f6-313c-4271-99f0-7f00f50186af/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-11-21 00:06:27,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:06:27,180 INFO L263 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-21 00:06:27,183 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:06:27,406 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:06:27,406 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 00:06:27,744 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:06:27,744 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 00:06:27,744 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1116936400] [2021-11-21 00:06:27,744 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1116936400] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 00:06:27,744 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [884636113] [2021-11-21 00:06:27,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:06:27,745 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-21 00:06:27,745 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731db8f6-313c-4271-99f0-7f00f50186af/bin/utaipan-TEXQjIfE4P/cvc4 [2021-11-21 00:06:27,746 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731db8f6-313c-4271-99f0-7f00f50186af/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-21 00:06:27,747 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731db8f6-313c-4271-99f0-7f00f50186af/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt (23)] Waiting until timeout for monitored process [2021-11-21 00:06:28,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:06:28,061 INFO L263 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-21 00:06:28,063 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:06:28,237 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:06:28,237 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 00:06:28,494 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:06:28,494 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [884636113] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 00:06:28,495 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1677939385] [2021-11-21 00:06:28,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:06:28,495 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:06:28,495 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731db8f6-313c-4271-99f0-7f00f50186af/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:06:28,498 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731db8f6-313c-4271-99f0-7f00f50186af/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 00:06:28,515 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731db8f6-313c-4271-99f0-7f00f50186af/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2021-11-21 00:06:28,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:06:28,709 INFO L263 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-21 00:06:28,711 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:06:28,929 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:06:28,929 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 00:06:29,323 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:06:29,323 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1677939385] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 00:06:29,324 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-21 00:06:29,324 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7, 7, 7, 7] total 17 [2021-11-21 00:06:29,324 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200658222] [2021-11-21 00:06:29,324 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-21 00:06:29,325 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-21 00:06:29,325 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 00:06:29,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-21 00:06:29,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=179, Unknown=0, NotChecked=0, Total=272 [2021-11-21 00:06:29,327 INFO L87 Difference]: Start difference. First operand 1178 states and 1426 transitions. Second operand has 17 states, 17 states have (on average 5.9411764705882355) internal successors, (101), 17 states have internal predecessors, (101), 1 states have call successors, (3), 1 states have call predecessors, (3), 4 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2021-11-21 00:06:30,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:06:30,004 INFO L93 Difference]: Finished difference Result 1196 states and 1447 transitions. [2021-11-21 00:06:30,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-21 00:06:30,005 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 5.9411764705882355) internal successors, (101), 17 states have internal predecessors, (101), 1 states have call successors, (3), 1 states have call predecessors, (3), 4 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) Word has length 90 [2021-11-21 00:06:30,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:06:30,010 INFO L225 Difference]: With dead ends: 1196 [2021-11-21 00:06:30,011 INFO L226 Difference]: Without dead ends: 1187 [2021-11-21 00:06:30,011 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 545 GetRequests, 519 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 125 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=270, Invalid=486, Unknown=0, NotChecked=0, Total=756 [2021-11-21 00:06:30,012 INFO L933 BasicCegarLoop]: 935 mSDtfsCounter, 55 mSDsluCounter, 7426 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 8361 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-21 00:06:30,013 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [55 Valid, 8361 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-21 00:06:30,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1187 states. [2021-11-21 00:06:30,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1187 to 1184. [2021-11-21 00:06:30,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1184 states, 786 states have (on average 1.782442748091603) internal successors, (1401), 1161 states have internal predecessors, (1401), 15 states have call successors, (15), 9 states have call predecessors, (15), 10 states have return successors, (17), 14 states have call predecessors, (17), 15 states have call successors, (17) [2021-11-21 00:06:30,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1184 states to 1184 states and 1433 transitions. [2021-11-21 00:06:30,035 INFO L78 Accepts]: Start accepts. Automaton has 1184 states and 1433 transitions. Word has length 90 [2021-11-21 00:06:30,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:06:30,036 INFO L470 AbstractCegarLoop]: Abstraction has 1184 states and 1433 transitions. [2021-11-21 00:06:30,036 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 5.9411764705882355) internal successors, (101), 17 states have internal predecessors, (101), 1 states have call successors, (3), 1 states have call predecessors, (3), 4 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2021-11-21 00:06:30,036 INFO L276 IsEmpty]: Start isEmpty. Operand 1184 states and 1433 transitions. [2021-11-21 00:06:30,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-11-21 00:06:30,038 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:06:30,038 INFO L514 BasicCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:06:30,052 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731db8f6-313c-4271-99f0-7f00f50186af/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2021-11-21 00:06:30,247 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731db8f6-313c-4271-99f0-7f00f50186af/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt (23)] Forceful destruction successful, exit code 0 [2021-11-21 00:06:30,469 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731db8f6-313c-4271-99f0-7f00f50186af/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2021-11-21 00:06:30,644 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731db8f6-313c-4271-99f0-7f00f50186af/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731db8f6-313c-4271-99f0-7f00f50186af/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731db8f6-313c-4271-99f0-7f00f50186af/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:06:30,644 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr78REQUIRES_VIOLATION === [alt_mallocErr0REQUIRES_VIOLATION, alt_mallocErr1REQUIRES_VIOLATION, alt_freeErr0REQUIRES_VIOLATION, alt_freeErr1REQUIRES_VIOLATION (and 527 more)] === [2021-11-21 00:06:30,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:06:30,645 INFO L85 PathProgramCache]: Analyzing trace with hash -583248713, now seen corresponding path program 2 times [2021-11-21 00:06:30,645 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 00:06:30,645 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [221388171] [2021-11-21 00:06:30,645 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-21 00:06:30,646 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 00:06:30,646 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731db8f6-313c-4271-99f0-7f00f50186af/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 00:06:30,647 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731db8f6-313c-4271-99f0-7f00f50186af/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 00:06:30,648 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731db8f6-313c-4271-99f0-7f00f50186af/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2021-11-21 00:06:31,086 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-21 00:06:31,086 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-21 00:06:31,112 INFO L263 TraceCheckSpWp]: Trace formula consists of 315 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-21 00:06:31,114 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:06:31,434 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:06:31,434 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 00:06:32,133 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:06:32,134 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 00:06:32,134 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [221388171] [2021-11-21 00:06:32,134 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [221388171] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 00:06:32,134 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [407932242] [2021-11-21 00:06:32,134 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-21 00:06:32,135 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-21 00:06:32,135 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731db8f6-313c-4271-99f0-7f00f50186af/bin/utaipan-TEXQjIfE4P/cvc4 [2021-11-21 00:06:32,140 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731db8f6-313c-4271-99f0-7f00f50186af/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-21 00:06:32,151 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731db8f6-313c-4271-99f0-7f00f50186af/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt (26)] Waiting until timeout for monitored process [2021-11-21 00:06:32,950 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-21 00:06:32,950 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-21 00:06:32,961 INFO L263 TraceCheckSpWp]: Trace formula consists of 315 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-21 00:06:32,963 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:06:33,142 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:06:33,143 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 00:06:33,421 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:06:33,422 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [407932242] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 00:06:33,422 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1276929411] [2021-11-21 00:06:33,422 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-21 00:06:33,422 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:06:33,422 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731db8f6-313c-4271-99f0-7f00f50186af/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:06:33,423 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731db8f6-313c-4271-99f0-7f00f50186af/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 00:06:33,424 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_731db8f6-313c-4271-99f0-7f00f50186af/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2021-11-21 00:07:57,252 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-21 00:07:57,252 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-21 00:07:57,283 INFO L263 TraceCheckSpWp]: Trace formula consists of 315 conjuncts, 22 conjunts are in the unsatisfiable core [2021-11-21 00:07:57,285 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:07:57,633 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-21 00:07:57,634 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 16 [2021-11-21 00:07:57,683 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 18 treesize of output 14 [2021-11-21 00:09:33,908 WARN L227 SmtUtils]: Spent 21.61s on a formula simplification. DAG size of input: 114 DAG size of output: 34 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-11-21 00:09:33,909 INFO L354 Elim1Store]: treesize reduction 884, result has 5.9 percent of original size [2021-11-21 00:09:33,910 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 6 case distinctions, treesize of input 78 treesize of output 82 [2021-11-21 00:09:34,868 INFO L354 Elim1Store]: treesize reduction 276, result has 0.4 percent of original size [2021-11-21 00:09:34,868 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 8 new quantified variables, introduced 21 case distinctions, treesize of input 127 treesize of output 40 [2021-11-21 00:09:35,033 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 11 refuted. 10 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:09:35,033 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 00:09:38,027 INFO L354 Elim1Store]: treesize reduction 5, result has 89.8 percent of original size [2021-11-21 00:09:38,028 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 65 treesize of output 64 [2021-11-21 00:13:53,035 INFO L354 Elim1Store]: treesize reduction 5, result has 89.8 percent of original size [2021-11-21 00:13:53,036 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 115 treesize of output 114 [2021-11-21 00:13:56,458 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_117| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_115| (_ BitVec 32)) (|alt_bzero_#Ultimate.C_memset_#t~loopctr269#1| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_119| (_ BitVec 32)) (|alt_bzero_#Ultimate.C_memset_#ptr#1.offset| (_ BitVec 32)) (|v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_4| (_ BitVec 32)) (|v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_7| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_113| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_121| (_ BitVec 32))) (or (= (select (select (store |c_#memory_$Pointer$.base| |c_alt_bzero_#Ultimate.C_memset_#ptr#1.base| (store (store (store (store (store (store (select |c_#memory_$Pointer$.base| |c_alt_bzero_#Ultimate.C_memset_#ptr#1.base|) (bvadd |alt_bzero_#Ultimate.C_memset_#t~loopctr269#1| |alt_bzero_#Ultimate.C_memset_#ptr#1.offset|) (_ bv0 32)) (bvadd |alt_bzero_#Ultimate.C_memset_#ptr#1.offset| |v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_121|) (_ bv0 32)) (bvadd |alt_bzero_#Ultimate.C_memset_#ptr#1.offset| |v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_119|) (_ bv0 32)) (bvadd |alt_bzero_#Ultimate.C_memset_#ptr#1.offset| |v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_117|) (_ bv0 32)) (bvadd |alt_bzero_#Ultimate.C_memset_#ptr#1.offset| |v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_115|) (_ bv0 32)) (bvadd |alt_bzero_#Ultimate.C_memset_#ptr#1.offset| |v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_113|) (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_7|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_4|)) |c_alt_bzero_#Ultimate.C_memset_#ptr#1.base|) (exists ((|v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_105| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_106| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_104| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_107| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_108| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_110| (_ BitVec 32))) (not (= (select (select (store |c_old(#memory_$Pointer$.base)| |c_alt_bzero_#in~a#1.base| (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.base)| |c_alt_bzero_#in~a#1.base|) (bvadd |v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34| |v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_107|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34| |v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_110|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34| |v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_108|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34| |v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_105|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34| |v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_104|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34| |v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_106|) (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_7|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_4|)) |c_alt_bzero_#in~a#1.base|))))) is different from false [2021-11-21 00:13:59,106 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_117| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_115| (_ BitVec 32)) (|alt_bzero_#Ultimate.C_memset_#t~loopctr269#1| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_119| (_ BitVec 32)) (|alt_bzero_#Ultimate.C_memset_#ptr#1.offset| (_ BitVec 32)) (|v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_4| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_113| (_ BitVec 32)) (|v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_7| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_121| (_ BitVec 32))) (or (= |c_alt_bzero_#in~a#1.base| (select (select (store |c_#memory_$Pointer$.base| |c_alt_bzero_#in~a#1.base| (store (store (store (store (store (store (select |c_#memory_$Pointer$.base| |c_alt_bzero_#in~a#1.base|) (bvadd |alt_bzero_#Ultimate.C_memset_#t~loopctr269#1| |alt_bzero_#Ultimate.C_memset_#ptr#1.offset|) (_ bv0 32)) (bvadd |alt_bzero_#Ultimate.C_memset_#ptr#1.offset| |v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_121|) (_ bv0 32)) (bvadd |alt_bzero_#Ultimate.C_memset_#ptr#1.offset| |v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_119|) (_ bv0 32)) (bvadd |alt_bzero_#Ultimate.C_memset_#ptr#1.offset| |v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_117|) (_ bv0 32)) (bvadd |alt_bzero_#Ultimate.C_memset_#ptr#1.offset| |v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_115|) (_ bv0 32)) (bvadd |alt_bzero_#Ultimate.C_memset_#ptr#1.offset| |v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_113|) (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_7|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_4|))) (exists ((|v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_105| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_106| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_104| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_107| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_108| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_110| (_ BitVec 32))) (not (= (select (select (store |c_old(#memory_$Pointer$.base)| |c_alt_bzero_#in~a#1.base| (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.base)| |c_alt_bzero_#in~a#1.base|) (bvadd |v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34| |v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_107|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34| |v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_110|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34| |v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_108|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34| |v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_105|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34| |v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_104|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34| |v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_106|) (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_7|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_4|)) |c_alt_bzero_#in~a#1.base|))))) is different from false [2021-11-21 00:14:40,884 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-11-21 00:14:40,901 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 21 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:14:40,902 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1276929411] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 00:14:40,902 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-21 00:14:40,902 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11, 11, 18, 18] total 53 [2021-11-21 00:14:40,902 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437644813] [2021-11-21 00:14:40,903 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-21 00:14:40,904 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2021-11-21 00:14:40,904 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 00:14:40,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2021-11-21 00:14:40,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=200, Invalid=2198, Unknown=160, NotChecked=198, Total=2756 [2021-11-21 00:14:40,906 INFO L87 Difference]: Start difference. First operand 1184 states and 1433 transitions. Second operand has 53 states, 51 states have (on average 4.96078431372549) internal successors, (253), 49 states have internal predecessors, (253), 7 states have call successors, (9), 5 states have call predecessors, (9), 7 states have return successors, (10), 8 states have call predecessors, (10), 7 states have call successors, (10) [2021-11-21 00:14:48,162 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((|v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_117| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_115| (_ BitVec 32)) (|alt_bzero_#Ultimate.C_memset_#t~loopctr269#1| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_119| (_ BitVec 32)) (|alt_bzero_#Ultimate.C_memset_#ptr#1.offset| (_ BitVec 32)) (|v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_4| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_113| (_ BitVec 32)) (|v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_7| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_121| (_ BitVec 32))) (or (= |c_alt_bzero_#in~a#1.base| (select (select (store |c_#memory_$Pointer$.base| |c_alt_bzero_#in~a#1.base| (store (store (store (store (store (store (select |c_#memory_$Pointer$.base| |c_alt_bzero_#in~a#1.base|) (bvadd |alt_bzero_#Ultimate.C_memset_#t~loopctr269#1| |alt_bzero_#Ultimate.C_memset_#ptr#1.offset|) (_ bv0 32)) (bvadd |alt_bzero_#Ultimate.C_memset_#ptr#1.offset| |v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_121|) (_ bv0 32)) (bvadd |alt_bzero_#Ultimate.C_memset_#ptr#1.offset| |v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_119|) (_ bv0 32)) (bvadd |alt_bzero_#Ultimate.C_memset_#ptr#1.offset| |v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_117|) (_ bv0 32)) (bvadd |alt_bzero_#Ultimate.C_memset_#ptr#1.offset| |v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_115|) (_ bv0 32)) (bvadd |alt_bzero_#Ultimate.C_memset_#ptr#1.offset| |v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_113|) (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_7|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_4|))) (exists ((|v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_105| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_106| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_104| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_107| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_108| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_110| (_ BitVec 32))) (not (= (select (select (store |c_old(#memory_$Pointer$.base)| |c_alt_bzero_#in~a#1.base| (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.base)| |c_alt_bzero_#in~a#1.base|) (bvadd |v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34| |v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_107|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34| |v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_110|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34| |v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_108|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34| |v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_105|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34| |v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_104|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34| |v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_106|) (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_7|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_4|)) |c_alt_bzero_#in~a#1.base|))))) (= |c_old(#memory_$Pointer$.base)| |c_#memory_$Pointer$.base|)) is different from false [2021-11-21 00:14:50,217 WARN L838 $PredicateComparison]: unable to prove that (and (= |c_alt_bzero_#in~n#1| |c_alt_bzero_#Ultimate.C_memset_#amount#1|) (= |c_alt_bzero_#in~a#1.base| |c_alt_bzero_#Ultimate.C_memset_#ptr#1.base|) (forall ((|v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_117| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_115| (_ BitVec 32)) (|alt_bzero_#Ultimate.C_memset_#t~loopctr269#1| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_119| (_ BitVec 32)) (|alt_bzero_#Ultimate.C_memset_#ptr#1.offset| (_ BitVec 32)) (|v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_4| (_ BitVec 32)) (|v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_7| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_113| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_121| (_ BitVec 32))) (or (= (select (select (store |c_#memory_$Pointer$.base| |c_alt_bzero_#Ultimate.C_memset_#ptr#1.base| (store (store (store (store (store (store (select |c_#memory_$Pointer$.base| |c_alt_bzero_#Ultimate.C_memset_#ptr#1.base|) (bvadd |alt_bzero_#Ultimate.C_memset_#t~loopctr269#1| |alt_bzero_#Ultimate.C_memset_#ptr#1.offset|) (_ bv0 32)) (bvadd |alt_bzero_#Ultimate.C_memset_#ptr#1.offset| |v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_121|) (_ bv0 32)) (bvadd |alt_bzero_#Ultimate.C_memset_#ptr#1.offset| |v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_119|) (_ bv0 32)) (bvadd |alt_bzero_#Ultimate.C_memset_#ptr#1.offset| |v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_117|) (_ bv0 32)) (bvadd |alt_bzero_#Ultimate.C_memset_#ptr#1.offset| |v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_115|) (_ bv0 32)) (bvadd |alt_bzero_#Ultimate.C_memset_#ptr#1.offset| |v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_113|) (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_7|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_4|)) |c_alt_bzero_#Ultimate.C_memset_#ptr#1.base|) (exists ((|v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_105| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_106| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_104| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_107| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_108| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_110| (_ BitVec 32))) (not (= (select (select (store |c_old(#memory_$Pointer$.base)| |c_alt_bzero_#in~a#1.base| (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.base)| |c_alt_bzero_#in~a#1.base|) (bvadd |v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34| |v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_107|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34| |v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_110|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34| |v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_108|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34| |v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_105|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34| |v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_104|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34| |v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_106|) (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_7|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_4|)) |c_alt_bzero_#in~a#1.base|))))) (= |c_old(#memory_$Pointer$.base)| |c_#memory_$Pointer$.base|)) is different from false [2021-11-21 00:16:13,766 WARN L838 $PredicateComparison]: unable to prove that (and (exists ((|v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_84| (_ BitVec 32))) (= (store |c_old(#memory_$Pointer$.base)| |c_alt_bzero_#Ultimate.C_memset_#ptr#1.base| (store (select |c_old(#memory_$Pointer$.base)| |c_alt_bzero_#Ultimate.C_memset_#ptr#1.base|) (bvadd |c_alt_bzero_#Ultimate.C_memset_#ptr#1.offset| |v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_84|) (_ bv0 32))) |c_#memory_$Pointer$.base|)) (= |c_alt_bzero_#in~n#1| |c_alt_bzero_#Ultimate.C_memset_#amount#1|) (= (_ bv0 1) (bvadd (bvneg (bvneg (select |c_#valid| |c_alt_bzero_#Ultimate.C_memset_#ptr#1.base|))) (_ bv1 1))) (= |c_alt_bzero_#in~a#1.base| |c_alt_bzero_#Ultimate.C_memset_#ptr#1.base|) (= |c_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1| (_ bv1 32)) (forall ((|v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_117| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_115| (_ BitVec 32)) (|alt_bzero_#Ultimate.C_memset_#t~loopctr269#1| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_119| (_ BitVec 32)) (|v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_4| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_113| (_ BitVec 32)) (|v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_7| (_ BitVec 32))) (or (= (_ bv0 1) (bvadd (_ bv1 1) (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| |c_alt_bzero_#Ultimate.C_memset_#ptr#1.base| (store (store (store (store (store (select |c_#memory_$Pointer$.base| |c_alt_bzero_#Ultimate.C_memset_#ptr#1.base|) (bvadd |alt_bzero_#Ultimate.C_memset_#t~loopctr269#1| |c_alt_bzero_#Ultimate.C_memset_#ptr#1.offset|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_119| |c_alt_bzero_#Ultimate.C_memset_#ptr#1.offset|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_117| |c_alt_bzero_#Ultimate.C_memset_#ptr#1.offset|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_115| |c_alt_bzero_#Ultimate.C_memset_#ptr#1.offset|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_113| |c_alt_bzero_#Ultimate.C_memset_#ptr#1.offset|) (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_7|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_4|)))))))))))))))) (exists ((|v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_105| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_106| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_104| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_107| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_108| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_110| (_ BitVec 32))) (not (= (select (select (store |c_old(#memory_$Pointer$.base)| |c_alt_bzero_#in~a#1.base| (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.base)| |c_alt_bzero_#in~a#1.base|) (bvadd |v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34| |v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_107|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34| |v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_110|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34| |v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_108|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34| |v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_105|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34| |v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_104|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34| |v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_106|) (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_7|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_4|)) |c_alt_bzero_#in~a#1.base|)))))) is different from false [2021-11-21 00:16:15,804 WARN L838 $PredicateComparison]: unable to prove that (and (= (_ bv2 32) |c_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1|) (exists ((|v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_84| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_85| (_ BitVec 32))) (= (store |c_old(#memory_$Pointer$.base)| |c_alt_bzero_#Ultimate.C_memset_#ptr#1.base| (store (store (select |c_old(#memory_$Pointer$.base)| |c_alt_bzero_#Ultimate.C_memset_#ptr#1.base|) (bvadd |c_alt_bzero_#Ultimate.C_memset_#ptr#1.offset| |v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_84|) (_ bv0 32)) (bvadd |c_alt_bzero_#Ultimate.C_memset_#ptr#1.offset| |v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_85|) (_ bv0 32))) |c_#memory_$Pointer$.base|)) (= |c_alt_bzero_#in~n#1| |c_alt_bzero_#Ultimate.C_memset_#amount#1|) (= (_ bv0 1) (bvadd (bvneg (bvneg (select |c_#valid| |c_alt_bzero_#Ultimate.C_memset_#ptr#1.base|))) (_ bv1 1))) (= |c_alt_bzero_#in~a#1.base| |c_alt_bzero_#Ultimate.C_memset_#ptr#1.base|) (forall ((|v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_117| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_115| (_ BitVec 32)) (|alt_bzero_#Ultimate.C_memset_#t~loopctr269#1| (_ BitVec 32)) (|v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_4| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_113| (_ BitVec 32)) (|v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_7| (_ BitVec 32))) (or (exists ((|v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_105| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_106| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_104| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_107| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_108| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_110| (_ BitVec 32))) (not (= (select (select (store |c_old(#memory_$Pointer$.base)| |c_alt_bzero_#in~a#1.base| (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.base)| |c_alt_bzero_#in~a#1.base|) (bvadd |v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34| |v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_107|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34| |v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_110|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34| |v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_108|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34| |v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_105|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34| |v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_104|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34| |v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_106|) (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_7|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_4|)) |c_alt_bzero_#in~a#1.base|))) (= (_ bv0 1) (bvadd (_ bv1 1) (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| |c_alt_bzero_#Ultimate.C_memset_#ptr#1.base| (store (store (store (store (select |c_#memory_$Pointer$.base| |c_alt_bzero_#Ultimate.C_memset_#ptr#1.base|) (bvadd |alt_bzero_#Ultimate.C_memset_#t~loopctr269#1| |c_alt_bzero_#Ultimate.C_memset_#ptr#1.offset|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_117| |c_alt_bzero_#Ultimate.C_memset_#ptr#1.offset|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_115| |c_alt_bzero_#Ultimate.C_memset_#ptr#1.offset|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_113| |c_alt_bzero_#Ultimate.C_memset_#ptr#1.offset|) (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_7|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_4|))))))))))))))))))) is different from false [2021-11-21 00:16:17,840 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((|v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_115| (_ BitVec 32)) (|alt_bzero_#Ultimate.C_memset_#t~loopctr269#1| (_ BitVec 32)) (|v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_4| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_113| (_ BitVec 32)) (|v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_7| (_ BitVec 32))) (or (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| |c_alt_bzero_#Ultimate.C_memset_#ptr#1.base| (store (store (store (select |c_#memory_$Pointer$.base| |c_alt_bzero_#Ultimate.C_memset_#ptr#1.base|) (bvadd |alt_bzero_#Ultimate.C_memset_#t~loopctr269#1| |c_alt_bzero_#Ultimate.C_memset_#ptr#1.offset|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_115| |c_alt_bzero_#Ultimate.C_memset_#ptr#1.offset|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_113| |c_alt_bzero_#Ultimate.C_memset_#ptr#1.offset|) (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_7|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_4|))))))))))))) (_ bv1 1))) (exists ((|v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_105| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_106| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_104| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_107| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_108| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_110| (_ BitVec 32))) (not (= (select (select (store |c_old(#memory_$Pointer$.base)| |c_alt_bzero_#in~a#1.base| (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.base)| |c_alt_bzero_#in~a#1.base|) (bvadd |v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34| |v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_107|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34| |v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_110|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34| |v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_108|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34| |v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_105|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34| |v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_104|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34| |v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_106|) (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_7|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_4|)) |c_alt_bzero_#in~a#1.base|))))) (= |c_alt_bzero_#in~n#1| |c_alt_bzero_#Ultimate.C_memset_#amount#1|) (= (_ bv0 1) (bvadd (bvneg (bvneg (select |c_#valid| |c_alt_bzero_#Ultimate.C_memset_#ptr#1.base|))) (_ bv1 1))) (= |c_alt_bzero_#in~a#1.base| |c_alt_bzero_#Ultimate.C_memset_#ptr#1.base|) (= (_ bv3 32) |c_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1|) (exists ((|v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_84| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_85| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_86| (_ BitVec 32))) (= (store |c_old(#memory_$Pointer$.base)| |c_alt_bzero_#Ultimate.C_memset_#ptr#1.base| (store (store (store (select |c_old(#memory_$Pointer$.base)| |c_alt_bzero_#Ultimate.C_memset_#ptr#1.base|) (bvadd |c_alt_bzero_#Ultimate.C_memset_#ptr#1.offset| |v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_84|) (_ bv0 32)) (bvadd |c_alt_bzero_#Ultimate.C_memset_#ptr#1.offset| |v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_85|) (_ bv0 32)) (bvadd |c_alt_bzero_#Ultimate.C_memset_#ptr#1.offset| |v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_86|) (_ bv0 32))) |c_#memory_$Pointer$.base|))) is different from false [2021-11-21 00:16:19,888 WARN L838 $PredicateComparison]: unable to prove that (and (= (_ bv4 32) |c_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1|) (= |c_alt_bzero_#in~n#1| |c_alt_bzero_#Ultimate.C_memset_#amount#1|) (= (_ bv0 1) (bvadd (bvneg (bvneg (select |c_#valid| |c_alt_bzero_#Ultimate.C_memset_#ptr#1.base|))) (_ bv1 1))) (= |c_alt_bzero_#in~a#1.base| |c_alt_bzero_#Ultimate.C_memset_#ptr#1.base|) (forall ((|alt_bzero_#Ultimate.C_memset_#t~loopctr269#1| (_ BitVec 32)) (|v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_4| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_113| (_ BitVec 32)) (|v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_7| (_ BitVec 32))) (or (exists ((|v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_105| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_106| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_104| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_107| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_108| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_110| (_ BitVec 32))) (not (= (select (select (store |c_old(#memory_$Pointer$.base)| |c_alt_bzero_#in~a#1.base| (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.base)| |c_alt_bzero_#in~a#1.base|) (bvadd |v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34| |v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_107|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34| |v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_110|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34| |v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_108|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34| |v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_105|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34| |v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_104|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34| |v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_106|) (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_7|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_4|)) |c_alt_bzero_#in~a#1.base|))) (= (_ bv0 1) (bvadd (_ bv1 1) (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| |c_alt_bzero_#Ultimate.C_memset_#ptr#1.base| (store (store (select |c_#memory_$Pointer$.base| |c_alt_bzero_#Ultimate.C_memset_#ptr#1.base|) (bvadd |alt_bzero_#Ultimate.C_memset_#t~loopctr269#1| |c_alt_bzero_#Ultimate.C_memset_#ptr#1.offset|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_113| |c_alt_bzero_#Ultimate.C_memset_#ptr#1.offset|) (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_7|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_4|))))))))))))))))) (exists ((|v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_84| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_85| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_86| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_87| (_ BitVec 32))) (= (store |c_old(#memory_$Pointer$.base)| |c_alt_bzero_#Ultimate.C_memset_#ptr#1.base| (store (store (store (store (select |c_old(#memory_$Pointer$.base)| |c_alt_bzero_#Ultimate.C_memset_#ptr#1.base|) (bvadd |c_alt_bzero_#Ultimate.C_memset_#ptr#1.offset| |v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_84|) (_ bv0 32)) (bvadd |c_alt_bzero_#Ultimate.C_memset_#ptr#1.offset| |v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_85|) (_ bv0 32)) (bvadd |c_alt_bzero_#Ultimate.C_memset_#ptr#1.offset| |v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_86|) (_ bv0 32)) (bvadd |c_alt_bzero_#Ultimate.C_memset_#ptr#1.offset| |v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_87|) (_ bv0 32))) |c_#memory_$Pointer$.base|))) is different from false [2021-11-21 00:16:21,919 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((|alt_bzero_#Ultimate.C_memset_#t~loopctr269#1| (_ BitVec 32)) (|v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_4| (_ BitVec 32)) (|v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_7| (_ BitVec 32))) (or (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| |c_alt_bzero_#Ultimate.C_memset_#ptr#1.base| (store (select |c_#memory_$Pointer$.base| |c_alt_bzero_#Ultimate.C_memset_#ptr#1.base|) (bvadd |alt_bzero_#Ultimate.C_memset_#t~loopctr269#1| |c_alt_bzero_#Ultimate.C_memset_#ptr#1.offset|) (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_7|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_4|)))))))))))) (_ bv1 1))) (exists ((|v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_105| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_106| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_104| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_107| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_108| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_110| (_ BitVec 32))) (not (= (select (select (store |c_old(#memory_$Pointer$.base)| |c_alt_bzero_#in~a#1.base| (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.base)| |c_alt_bzero_#in~a#1.base|) (bvadd |v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34| |v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_107|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34| |v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_110|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34| |v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_108|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34| |v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_105|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34| |v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_104|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34| |v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_106|) (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_7|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_4|)) |c_alt_bzero_#in~a#1.base|))))) (= |c_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1| (_ bv5 32)) (= |c_alt_bzero_#in~n#1| |c_alt_bzero_#Ultimate.C_memset_#amount#1|) (= (_ bv0 1) (bvadd (bvneg (bvneg (select |c_#valid| |c_alt_bzero_#Ultimate.C_memset_#ptr#1.base|))) (_ bv1 1))) (= |c_alt_bzero_#in~a#1.base| |c_alt_bzero_#Ultimate.C_memset_#ptr#1.base|) (exists ((|v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_88| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_84| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_85| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_86| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_87| (_ BitVec 32))) (= (store |c_old(#memory_$Pointer$.base)| |c_alt_bzero_#Ultimate.C_memset_#ptr#1.base| (store (store (store (store (store (select |c_old(#memory_$Pointer$.base)| |c_alt_bzero_#Ultimate.C_memset_#ptr#1.base|) (bvadd |c_alt_bzero_#Ultimate.C_memset_#ptr#1.offset| |v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_84|) (_ bv0 32)) (bvadd |c_alt_bzero_#Ultimate.C_memset_#ptr#1.offset| |v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_85|) (_ bv0 32)) (bvadd |c_alt_bzero_#Ultimate.C_memset_#ptr#1.offset| |v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_86|) (_ bv0 32)) (bvadd |c_alt_bzero_#Ultimate.C_memset_#ptr#1.offset| |v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_87|) (_ bv0 32)) (bvadd |c_alt_bzero_#Ultimate.C_memset_#ptr#1.offset| |v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_88|) (_ bv0 32))) |c_#memory_$Pointer$.base|))) is different from false [2021-11-21 00:16:23,939 WARN L838 $PredicateComparison]: unable to prove that (and (exists ((|v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_88| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_89| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_84| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_85| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_86| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_87| (_ BitVec 32)) (|alt_bzero_#Ultimate.C_memset_#ptr#1.offset| (_ BitVec 32))) (= (store |c_old(#memory_$Pointer$.base)| |c_alt_bzero_#in~a#1.base| (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.base)| |c_alt_bzero_#in~a#1.base|) (bvadd |alt_bzero_#Ultimate.C_memset_#ptr#1.offset| |v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_84|) (_ bv0 32)) (bvadd |alt_bzero_#Ultimate.C_memset_#ptr#1.offset| |v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_85|) (_ bv0 32)) (bvadd |alt_bzero_#Ultimate.C_memset_#ptr#1.offset| |v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_86|) (_ bv0 32)) (bvadd |alt_bzero_#Ultimate.C_memset_#ptr#1.offset| |v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_87|) (_ bv0 32)) (bvadd |alt_bzero_#Ultimate.C_memset_#ptr#1.offset| |v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_88|) (_ bv0 32)) (bvadd |alt_bzero_#Ultimate.C_memset_#ptr#1.offset| |v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_89|) (_ bv0 32))) |c_#memory_$Pointer$.base|)) (= (_ bv6 32) |c_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1|) (= |c_alt_bzero_#in~n#1| |c_alt_bzero_#Ultimate.C_memset_#amount#1|) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (select |c_#valid| |c_alt_bzero_#in~a#1.base|))))) (_ bv1 1))) (forall ((|v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_4| (_ BitVec 32)) (|v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_7| (_ BitVec 32))) (or (exists ((|v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_105| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_106| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_104| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_107| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_108| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34| (_ BitVec 32)) (|v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_110| (_ BitVec 32))) (not (= (select (select (store |c_old(#memory_$Pointer$.base)| |c_alt_bzero_#in~a#1.base| (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.base)| |c_alt_bzero_#in~a#1.base|) (bvadd |v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34| |v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_107|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34| |v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_110|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34| |v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_108|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34| |v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_105|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34| |v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_104|) (_ bv0 32)) (bvadd |v_alt_bzero_#Ultimate.C_memset_#ptr#1.offset_34| |v_alt_bzero_#Ultimate.C_memset_#t~loopctr269#1_106|) (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_7|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_4|)) |c_alt_bzero_#in~a#1.base|))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_7|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_4|))))))))))) (_ bv1 1)))))) is different from false [2021-11-21 00:17:54,926 WARN L227 SmtUtils]: Spent 10.17s on a formula simplification that was a NOOP. DAG size: 86 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)