./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/pthread-memsafety/fillarray.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_6b347a06-361b-4b8c-a7f4-7cf8cac5ba91/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_6b347a06-361b-4b8c-a7f4-7cf8cac5ba91/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_6b347a06-361b-4b8c-a7f4-7cf8cac5ba91/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_6b347a06-361b-4b8c-a7f4-7cf8cac5ba91/bin/utaipan/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread-memsafety/fillarray.i -s /tmp/vcloud-vcloud-master/worker/run_dir_6b347a06-361b-4b8c-a7f4-7cf8cac5ba91/bin/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_6b347a06-361b-4b8c-a7f4-7cf8cac5ba91/bin/utaipan --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 317acdded5b2f05710e753bf8fd3c2308f1aec62 ............................................................................................................................................ Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_6b347a06-361b-4b8c-a7f4-7cf8cac5ba91/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_6b347a06-361b-4b8c-a7f4-7cf8cac5ba91/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_6b347a06-361b-4b8c-a7f4-7cf8cac5ba91/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_6b347a06-361b-4b8c-a7f4-7cf8cac5ba91/bin/utaipan/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread-memsafety/fillarray.i -s /tmp/vcloud-vcloud-master/worker/run_dir_6b347a06-361b-4b8c-a7f4-7cf8cac5ba91/bin/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_6b347a06-361b-4b8c-a7f4-7cf8cac5ba91/bin/utaipan --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 317acdded5b2f05710e753bf8fd3c2308f1aec62 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(valid-deref) --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2020-12-09 12:56:16,520 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 12:56:16,521 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 12:56:16,551 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 12:56:16,551 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 12:56:16,552 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 12:56:16,554 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 12:56:16,555 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 12:56:16,557 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 12:56:16,558 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 12:56:16,558 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 12:56:16,559 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 12:56:16,560 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 12:56:16,561 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 12:56:16,562 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 12:56:16,563 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 12:56:16,563 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 12:56:16,564 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 12:56:16,566 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 12:56:16,567 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 12:56:16,569 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 12:56:16,570 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 12:56:16,571 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 12:56:16,572 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 12:56:16,574 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 12:56:16,574 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 12:56:16,575 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 12:56:16,575 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 12:56:16,576 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 12:56:16,577 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 12:56:16,577 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 12:56:16,578 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 12:56:16,578 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 12:56:16,579 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 12:56:16,580 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 12:56:16,580 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 12:56:16,580 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 12:56:16,580 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 12:56:16,581 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 12:56:16,581 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 12:56:16,582 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 12:56:16,583 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_6b347a06-361b-4b8c-a7f4-7cf8cac5ba91/bin/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2020-12-09 12:56:16,604 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 12:56:16,604 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 12:56:16,605 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 12:56:16,605 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 12:56:16,605 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 12:56:16,606 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 12:56:16,606 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-12-09 12:56:16,606 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 12:56:16,606 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 12:56:16,606 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-12-09 12:56:16,606 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-12-09 12:56:16,606 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 12:56:16,606 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-12-09 12:56:16,607 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-12-09 12:56:16,607 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-12-09 12:56:16,607 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-09 12:56:16,607 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-09 12:56:16,608 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 12:56:16,608 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 12:56:16,608 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-12-09 12:56:16,608 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-09 12:56:16,608 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 12:56:16,608 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 12:56:16,608 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-12-09 12:56:16,608 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-12-09 12:56:16,608 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-12-09 12:56:16,609 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 12:56:16,609 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 12:56:16,609 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 12:56:16,609 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 12:56:16,609 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 12:56:16,609 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 12:56:16,610 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 12:56:16,610 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 12:56:16,610 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 12:56:16,610 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-12-09 12:56:16,610 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-09 12:56:16,610 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 12:56:16,611 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 12:56:16,611 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-vcloud-master/worker/run_dir_6b347a06-361b-4b8c-a7f4-7cf8cac5ba91/bin/utaipan/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_6b347a06-361b-4b8c-a7f4-7cf8cac5ba91/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 317acdded5b2f05710e753bf8fd3c2308f1aec62 [2020-12-09 12:56:16,792 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 12:56:16,807 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 12:56:16,809 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 12:56:16,810 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 12:56:16,810 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 12:56:16,811 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_6b347a06-361b-4b8c-a7f4-7cf8cac5ba91/bin/utaipan/../../sv-benchmarks/c/pthread-memsafety/fillarray.i [2020-12-09 12:56:16,852 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_6b347a06-361b-4b8c-a7f4-7cf8cac5ba91/bin/utaipan/data/16df12c15/55109d17a415405dbd34ade4668c06cd/FLAGdb7441105 [2020-12-09 12:56:17,275 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 12:56:17,275 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_6b347a06-361b-4b8c-a7f4-7cf8cac5ba91/sv-benchmarks/c/pthread-memsafety/fillarray.i [2020-12-09 12:56:17,287 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_6b347a06-361b-4b8c-a7f4-7cf8cac5ba91/bin/utaipan/data/16df12c15/55109d17a415405dbd34ade4668c06cd/FLAGdb7441105 [2020-12-09 12:56:17,297 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_6b347a06-361b-4b8c-a7f4-7cf8cac5ba91/bin/utaipan/data/16df12c15/55109d17a415405dbd34ade4668c06cd [2020-12-09 12:56:17,299 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 12:56:17,300 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 12:56:17,301 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 12:56:17,301 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 12:56:17,303 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 12:56:17,304 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 12:56:17" (1/1) ... [2020-12-09 12:56:17,305 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b32a532 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:56:17, skipping insertion in model container [2020-12-09 12:56:17,305 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 12:56:17" (1/1) ... [2020-12-09 12:56:17,310 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 12:56:17,341 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 12:56:17,583 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 12:56:17,589 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) [2020-12-09 12:56:17,589 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@41a2a365 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:56:17, skipping insertion in model container [2020-12-09 12:56:17,589 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 12:56:17,589 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2020-12-09 12:56:17,591 INFO L168 Benchmark]: Toolchain (without parser) took 290.57 ms. Allocated memory is still 98.6 MB. Free memory was 57.0 MB in the beginning and 69.9 MB in the end (delta: -12.9 MB). Peak memory consumption was 7.5 MB. Max. memory is 16.1 GB. [2020-12-09 12:56:17,592 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 98.6 MB. Free memory was 75.2 MB in the beginning and 75.1 MB in the end (delta: 136.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 12:56:17,592 INFO L168 Benchmark]: CACSL2BoogieTranslator took 288.65 ms. Allocated memory is still 98.6 MB. Free memory was 56.9 MB in the beginning and 69.9 MB in the end (delta: -13.0 MB). Peak memory consumption was 7.5 MB. Max. memory is 16.1 GB. [2020-12-09 12:56:17,593 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 98.6 MB. Free memory was 75.2 MB in the beginning and 75.1 MB in the end (delta: 136.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 288.65 ms. Allocated memory is still 98.6 MB. Free memory was 56.9 MB in the beginning and 69.9 MB in the end (delta: -13.0 MB). Peak memory consumption was 7.5 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 1041]: 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... ### Bit-precise run ### This is Ultimate 0.2.0-7b2dab5 [2020-12-09 12:56:18,889 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 12:56:18,891 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 12:56:18,924 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 12:56:18,924 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 12:56:18,925 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 12:56:18,927 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 12:56:18,929 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 12:56:18,931 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 12:56:18,932 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 12:56:18,934 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 12:56:18,935 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 12:56:18,935 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 12:56:18,937 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 12:56:18,938 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 12:56:18,939 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 12:56:18,940 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 12:56:18,941 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 12:56:18,943 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 12:56:18,945 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 12:56:18,947 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 12:56:18,949 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 12:56:18,950 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 12:56:18,951 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 12:56:18,954 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 12:56:18,955 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 12:56:18,955 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 12:56:18,956 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 12:56:18,956 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 12:56:18,957 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 12:56:18,958 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 12:56:18,959 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 12:56:18,959 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 12:56:18,960 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 12:56:18,961 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 12:56:18,961 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 12:56:18,962 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 12:56:18,962 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 12:56:18,962 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 12:56:18,963 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 12:56:18,964 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 12:56:18,965 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_6b347a06-361b-4b8c-a7f4-7cf8cac5ba91/bin/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2020-12-09 12:56:18,989 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 12:56:18,989 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 12:56:18,990 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 12:56:18,990 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 12:56:18,990 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 12:56:18,991 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 12:56:18,991 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 12:56:18,991 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 12:56:18,991 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 12:56:18,992 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-09 12:56:18,992 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-09 12:56:18,992 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 12:56:18,992 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 12:56:18,993 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-12-09 12:56:18,993 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-09 12:56:18,993 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 12:56:18,993 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 12:56:18,993 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-12-09 12:56:18,994 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-12-09 12:56:18,994 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-12-09 12:56:18,994 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 12:56:18,994 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 12:56:18,994 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-12-09 12:56:18,994 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-12-09 12:56:18,995 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 12:56:18,995 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 12:56:18,995 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 12:56:18,995 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-09 12:56:18,995 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 12:56:18,995 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 12:56:18,996 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 12:56:18,996 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 12:56:18,996 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2020-12-09 12:56:18,996 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2020-12-09 12:56:18,996 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 12:56:18,997 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 12:56:18,997 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-vcloud-master/worker/run_dir_6b347a06-361b-4b8c-a7f4-7cf8cac5ba91/bin/utaipan/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_6b347a06-361b-4b8c-a7f4-7cf8cac5ba91/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 317acdded5b2f05710e753bf8fd3c2308f1aec62 [2020-12-09 12:56:19,245 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 12:56:19,265 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 12:56:19,267 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 12:56:19,268 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 12:56:19,269 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 12:56:19,270 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_6b347a06-361b-4b8c-a7f4-7cf8cac5ba91/bin/utaipan/../../sv-benchmarks/c/pthread-memsafety/fillarray.i [2020-12-09 12:56:19,318 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_6b347a06-361b-4b8c-a7f4-7cf8cac5ba91/bin/utaipan/data/d38a47d60/625f3845e71a477b80152946f938ae5c/FLAGdccf545d5 [2020-12-09 12:56:19,774 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 12:56:19,774 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_6b347a06-361b-4b8c-a7f4-7cf8cac5ba91/sv-benchmarks/c/pthread-memsafety/fillarray.i [2020-12-09 12:56:19,788 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_6b347a06-361b-4b8c-a7f4-7cf8cac5ba91/bin/utaipan/data/d38a47d60/625f3845e71a477b80152946f938ae5c/FLAGdccf545d5 [2020-12-09 12:56:19,801 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_6b347a06-361b-4b8c-a7f4-7cf8cac5ba91/bin/utaipan/data/d38a47d60/625f3845e71a477b80152946f938ae5c [2020-12-09 12:56:19,804 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 12:56:19,805 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 12:56:19,805 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 12:56:19,805 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 12:56:19,808 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 12:56:19,809 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 12:56:19" (1/1) ... [2020-12-09 12:56:19,811 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1c324f36 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:56:19, skipping insertion in model container [2020-12-09 12:56:19,811 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 12:56:19" (1/1) ... [2020-12-09 12:56:19,817 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 12:56:19,855 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 12:56:20,145 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 12:56:20,152 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2020-12-09 12:56:20,157 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 12:56:20,180 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 12:56:20,183 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 12:56:20,211 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 12:56:20,304 INFO L208 MainTranslator]: Completed translation [2020-12-09 12:56:20,304 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:56:20 WrapperNode [2020-12-09 12:56:20,304 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 12:56:20,305 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 12:56:20,305 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 12:56:20,305 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 12:56:20,310 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:56:20" (1/1) ... [2020-12-09 12:56:20,326 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:56:20" (1/1) ... [2020-12-09 12:56:20,340 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 12:56:20,341 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 12:56:20,341 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 12:56:20,341 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 12:56:20,349 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:56:20" (1/1) ... [2020-12-09 12:56:20,349 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:56:20" (1/1) ... [2020-12-09 12:56:20,352 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:56:20" (1/1) ... [2020-12-09 12:56:20,352 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:56:20" (1/1) ... [2020-12-09 12:56:20,358 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:56:20" (1/1) ... [2020-12-09 12:56:20,362 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:56:20" (1/1) ... [2020-12-09 12:56:20,364 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:56:20" (1/1) ... [2020-12-09 12:56:20,366 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 12:56:20,367 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 12:56:20,367 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 12:56:20,367 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 12:56:20,368 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:56:20" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6b347a06-361b-4b8c-a7f4-7cf8cac5ba91/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 12:56:20,424 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2020-12-09 12:56:20,424 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2020-12-09 12:56:20,424 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2020-12-09 12:56:20,424 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2020-12-09 12:56:20,424 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-09 12:56:20,425 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-09 12:56:20,425 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2020-12-09 12:56:20,425 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-12-09 12:56:20,425 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 12:56:20,425 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 12:56:20,426 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-12-09 12:56:20,731 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 12:56:20,731 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2020-12-09 12:56:20,732 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 12:56:20 BoogieIcfgContainer [2020-12-09 12:56:20,732 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 12:56:20,733 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 12:56:20,733 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 12:56:20,735 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 12:56:20,735 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 12:56:19" (1/3) ... [2020-12-09 12:56:20,736 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57a27477 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 12:56:20, skipping insertion in model container [2020-12-09 12:56:20,736 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:56:20" (2/3) ... [2020-12-09 12:56:20,736 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57a27477 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 12:56:20, skipping insertion in model container [2020-12-09 12:56:20,736 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 12:56:20" (3/3) ... [2020-12-09 12:56:20,737 INFO L111 eAbstractionObserver]: Analyzing ICFG fillarray.i [2020-12-09 12:56:20,747 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 12:56:20,750 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 12 error locations. [2020-12-09 12:56:20,750 INFO L354 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-12-09 12:56:20,771 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 12:56:20,771 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 12:56:20,771 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 12:56:20,772 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 12:56:20,772 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 12:56:20,772 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 12:56:20,772 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 12:56:20,772 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 12:56:20,772 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 12:56:20,773 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 12:56:20,773 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~a~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 12:56:20,773 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~a~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 12:56:20,773 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 12:56:20,773 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 12:56:20,776 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~a~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 12:56:20,776 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~a~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 12:56:20,777 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 12:56:20,777 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 12:56:20,777 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 12:56:20,777 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 12:56:20,778 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~pre2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 12:56:20,778 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~pre2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 12:56:20,778 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~pre2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 12:56:20,778 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~pre2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 12:56:20,778 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~a~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 12:56:20,778 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~a~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 12:56:20,779 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~a~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 12:56:20,779 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~a~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 12:56:20,779 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~a~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 12:56:20,780 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~a~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 12:56:20,780 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~a~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 12:56:20,780 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~a~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 12:56:20,780 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~a~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 12:56:20,780 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~a~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 12:56:20,781 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 12:56:20,781 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 12:56:20,781 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 12:56:20,781 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 12:56:20,782 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 12:56:20,782 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 12:56:20,782 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 12:56:20,782 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 12:56:20,782 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 12:56:20,782 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 12:56:20,782 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~a~1.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 12:56:20,782 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~a~1.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 12:56:20,783 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 12:56:20,783 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 12:56:20,783 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~a~1.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 12:56:20,783 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~a~1.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 12:56:20,783 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 12:56:20,784 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 12:56:20,784 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 12:56:20,784 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 12:56:20,784 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~pre3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 12:56:20,784 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~pre3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 12:56:20,785 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~pre3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 12:56:20,785 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~pre3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 12:56:20,785 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~a~1.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 12:56:20,785 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~a~1.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 12:56:20,785 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~a~1.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 12:56:20,785 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~a~1.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 12:56:20,786 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~a~1.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 12:56:20,786 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~a~1.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 12:56:20,786 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~a~1.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 12:56:20,786 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~a~1.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 12:56:20,787 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~a~1.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 12:56:20,787 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~a~1.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 12:56:20,789 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 12:56:20,789 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 12:56:20,789 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~a~1.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 12:56:20,790 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~pre3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 12:56:20,790 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 12:56:20,790 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 12:56:20,790 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~a~1.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 12:56:20,795 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~pre2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 12:56:20,795 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 12:56:20,795 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 12:56:20,795 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 12:56:20,796 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 12:56:20,796 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~a~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 12:56:20,796 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~a~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 12:56:20,798 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-12-09 12:56:20,808 INFO L253 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2020-12-09 12:56:20,826 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 12:56:20,826 INFO L378 AbstractCegarLoop]: Hoare is false [2020-12-09 12:56:20,827 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 12:56:20,827 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 12:56:20,827 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 12:56:20,827 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 12:56:20,827 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 12:56:20,827 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 12:56:20,838 INFO L120 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-12-09 12:56:20,839 INFO L135 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 81 places, 79 transitions, 168 flow [2020-12-09 12:56:20,841 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 81 places, 79 transitions, 168 flow [2020-12-09 12:56:20,843 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 81 places, 79 transitions, 168 flow [2020-12-09 12:56:20,878 INFO L129 PetriNetUnfolder]: 4/82 cut-off events. [2020-12-09 12:56:20,878 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-12-09 12:56:20,881 INFO L84 FinitePrefix]: Finished finitePrefix Result has 89 conditions, 82 events. 4/82 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 122 event pairs, 0 based on Foata normal form. 0/64 useless extension candidates. Maximal degree in co-relation 52. Up to 2 conditions per place. [2020-12-09 12:56:20,884 INFO L116 LiptonReduction]: Number of co-enabled transitions 1404 [2020-12-09 12:56:21,195 WARN L197 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 36 [2020-12-09 12:56:21,362 WARN L197 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 36 [2020-12-09 12:56:21,946 WARN L197 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 36 [2020-12-09 12:56:24,945 WARN L197 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 64 [2020-12-09 12:56:25,050 WARN L197 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-12-09 12:56:25,243 WARN L197 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 61 [2020-12-09 12:56:25,823 WARN L197 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 80 [2020-12-09 12:56:26,017 WARN L197 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 80 [2020-12-09 12:56:26,174 WARN L197 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 77 [2020-12-09 12:56:26,330 WARN L197 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 77 [2020-12-09 12:56:27,190 WARN L197 SmtUtils]: Spent 685.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 106 [2020-12-09 12:56:27,447 WARN L197 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 98 [2020-12-09 12:56:27,987 WARN L197 SmtUtils]: Spent 538.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 103 [2020-12-09 12:56:28,237 WARN L197 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2020-12-09 12:56:28,450 INFO L131 LiptonReduction]: Checked pairs total: 3493 [2020-12-09 12:56:28,450 INFO L133 LiptonReduction]: Total number of compositions: 67 [2020-12-09 12:56:28,454 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 39 places, 35 transitions, 80 flow [2020-12-09 12:56:28,479 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 615 states. [2020-12-09 12:56:28,481 INFO L276 IsEmpty]: Start isEmpty. Operand 615 states. [2020-12-09 12:56:28,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2 [2020-12-09 12:56:28,484 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 12:56:28,485 INFO L422 BasicCegarLoop]: trace histogram [1] [2020-12-09 12:56:28,485 INFO L429 AbstractCegarLoop]: === Iteration 1 === [t1Err1REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, t1Err0REQUIRES_VIOLATION, t1Err1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, t2Err0REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, t2Err1REQUIRES_VIOLATION, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2REQUIRES_VIOLATION, t2Err1REQUIRES_VIOLATION, t2Err0REQUIRES_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t1Err0REQUIRES_VIOLATION]=== [2020-12-09 12:56:28,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 12:56:28,489 INFO L82 PathProgramCache]: Analyzing trace with hash 303, now seen corresponding path program 1 times [2020-12-09 12:56:28,497 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 12:56:28,497 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1500638586] [2020-12-09 12:56:28,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6b347a06-361b-4b8c-a7f4-7cf8cac5ba91/bin/utaipan/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2020-12-09 12:56:28,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 12:56:28,553 INFO L263 TraceCheckSpWp]: Trace formula consists of 3 conjuncts, 1 conjunts are in the unsatisfiable core [2020-12-09 12:56:28,555 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 12:56:28,558 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 12:56:28,558 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 12:56:28,558 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1500638586] [2020-12-09 12:56:28,559 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 12:56:28,559 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2020-12-09 12:56:28,559 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097848139] [2020-12-09 12:56:28,563 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-09 12:56:28,563 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 12:56:28,573 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-09 12:56:28,573 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-09 12:56:28,574 INFO L87 Difference]: Start difference. First operand 615 states. Second operand 2 states. [2020-12-09 12:56:28,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 12:56:28,613 INFO L93 Difference]: Finished difference Result 613 states and 1733 transitions. [2020-12-09 12:56:28,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-09 12:56:28,614 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 1 [2020-12-09 12:56:28,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 12:56:28,628 INFO L225 Difference]: With dead ends: 613 [2020-12-09 12:56:28,628 INFO L226 Difference]: Without dead ends: 611 [2020-12-09 12:56:28,629 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 0 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-09 12:56:28,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 611 states. [2020-12-09 12:56:28,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 611 to 611. [2020-12-09 12:56:28,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 611 states. [2020-12-09 12:56:28,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 611 states to 611 states and 1729 transitions. [2020-12-09 12:56:28,690 INFO L78 Accepts]: Start accepts. Automaton has 611 states and 1729 transitions. Word has length 1 [2020-12-09 12:56:28,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 12:56:28,690 INFO L481 AbstractCegarLoop]: Abstraction has 611 states and 1729 transitions. [2020-12-09 12:56:28,690 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-09 12:56:28,690 INFO L276 IsEmpty]: Start isEmpty. Operand 611 states and 1729 transitions. [2020-12-09 12:56:28,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2020-12-09 12:56:28,691 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 12:56:28,691 INFO L422 BasicCegarLoop]: trace histogram [1, 1] [2020-12-09 12:56:28,891 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-12-09 12:56:28,893 INFO L429 AbstractCegarLoop]: === Iteration 2 === [t1Err1REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, t1Err0REQUIRES_VIOLATION, t1Err1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, t2Err0REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, t2Err1REQUIRES_VIOLATION, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2REQUIRES_VIOLATION, t2Err1REQUIRES_VIOLATION, t2Err0REQUIRES_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t1Err0REQUIRES_VIOLATION]=== [2020-12-09 12:56:28,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 12:56:28,895 INFO L82 PathProgramCache]: Analyzing trace with hash 9464, now seen corresponding path program 1 times [2020-12-09 12:56:28,896 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 12:56:28,897 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1080153630] [2020-12-09 12:56:28,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6b347a06-361b-4b8c-a7f4-7cf8cac5ba91/bin/utaipan/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2020-12-09 12:56:28,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 12:56:28,982 INFO L263 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 2 conjunts are in the unsatisfiable core [2020-12-09 12:56:28,982 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 12:56:28,991 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 12:56:28,991 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 12:56:28,992 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1080153630] [2020-12-09 12:56:28,992 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 12:56:28,992 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-12-09 12:56:28,992 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256135213] [2020-12-09 12:56:28,993 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 12:56:28,993 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 12:56:28,994 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 12:56:28,994 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 12:56:28,995 INFO L87 Difference]: Start difference. First operand 611 states and 1729 transitions. Second operand 3 states. [2020-12-09 12:56:29,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 12:56:29,072 INFO L93 Difference]: Finished difference Result 610 states and 1728 transitions. [2020-12-09 12:56:29,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 12:56:29,073 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 2 [2020-12-09 12:56:29,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 12:56:29,077 INFO L225 Difference]: With dead ends: 610 [2020-12-09 12:56:29,077 INFO L226 Difference]: Without dead ends: 609 [2020-12-09 12:56:29,078 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 12:56:29,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 609 states. [2020-12-09 12:56:29,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 609 to 609. [2020-12-09 12:56:29,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 609 states. [2020-12-09 12:56:29,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 609 states to 609 states and 1727 transitions. [2020-12-09 12:56:29,098 INFO L78 Accepts]: Start accepts. Automaton has 609 states and 1727 transitions. Word has length 2 [2020-12-09 12:56:29,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 12:56:29,098 INFO L481 AbstractCegarLoop]: Abstraction has 609 states and 1727 transitions. [2020-12-09 12:56:29,098 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 12:56:29,099 INFO L276 IsEmpty]: Start isEmpty. Operand 609 states and 1727 transitions. [2020-12-09 12:56:29,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-12-09 12:56:29,099 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 12:56:29,099 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-12-09 12:56:29,299 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-12-09 12:56:29,301 INFO L429 AbstractCegarLoop]: === Iteration 3 === [t1Err1REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, t1Err0REQUIRES_VIOLATION, t1Err1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, t2Err0REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, t2Err1REQUIRES_VIOLATION, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2REQUIRES_VIOLATION, t2Err1REQUIRES_VIOLATION, t2Err0REQUIRES_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t1Err0REQUIRES_VIOLATION]=== [2020-12-09 12:56:29,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 12:56:29,303 INFO L82 PathProgramCache]: Analyzing trace with hash 295877, now seen corresponding path program 1 times [2020-12-09 12:56:29,306 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 12:56:29,307 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1013728683] [2020-12-09 12:56:29,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6b347a06-361b-4b8c-a7f4-7cf8cac5ba91/bin/utaipan/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2020-12-09 12:56:29,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 12:56:29,459 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 2 conjunts are in the unsatisfiable core [2020-12-09 12:56:29,460 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 12:56:29,503 INFO L348 Elim1Store]: treesize reduction 44, result has 20.0 percent of original size [2020-12-09 12:56:29,504 INFO L382 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 2 case distinctions, treesize of input 12 treesize of output 16 [2020-12-09 12:56:29,505 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-09 12:56:29,511 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 12:56:29,514 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-12-09 12:56:29,514 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:12, output treesize:20 [2020-12-09 12:56:29,528 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 12:56:29,528 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 12:56:29,528 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1013728683] [2020-12-09 12:56:29,528 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 12:56:29,528 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-12-09 12:56:29,528 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1532290578] [2020-12-09 12:56:29,529 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 12:56:29,529 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 12:56:29,529 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 12:56:29,529 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 12:56:29,530 INFO L87 Difference]: Start difference. First operand 609 states and 1727 transitions. Second operand 3 states. [2020-12-09 12:56:29,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 12:56:29,587 INFO L93 Difference]: Finished difference Result 601 states and 1711 transitions. [2020-12-09 12:56:29,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 12:56:29,589 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2020-12-09 12:56:29,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 12:56:29,593 INFO L225 Difference]: With dead ends: 601 [2020-12-09 12:56:29,593 INFO L226 Difference]: Without dead ends: 601 [2020-12-09 12:56:29,593 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 12:56:29,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 601 states. [2020-12-09 12:56:29,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 601 to 601. [2020-12-09 12:56:29,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 601 states. [2020-12-09 12:56:29,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 601 states to 601 states and 1711 transitions. [2020-12-09 12:56:29,608 INFO L78 Accepts]: Start accepts. Automaton has 601 states and 1711 transitions. Word has length 3 [2020-12-09 12:56:29,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 12:56:29,608 INFO L481 AbstractCegarLoop]: Abstraction has 601 states and 1711 transitions. [2020-12-09 12:56:29,608 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 12:56:29,609 INFO L276 IsEmpty]: Start isEmpty. Operand 601 states and 1711 transitions. [2020-12-09 12:56:29,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-12-09 12:56:29,609 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 12:56:29,609 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-12-09 12:56:29,809 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-12-09 12:56:29,811 INFO L429 AbstractCegarLoop]: === Iteration 4 === [t1Err1REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, t1Err0REQUIRES_VIOLATION, t1Err1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, t2Err0REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, t2Err1REQUIRES_VIOLATION, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2REQUIRES_VIOLATION, t2Err1REQUIRES_VIOLATION, t2Err0REQUIRES_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t1Err0REQUIRES_VIOLATION]=== [2020-12-09 12:56:29,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 12:56:29,813 INFO L82 PathProgramCache]: Analyzing trace with hash 295878, now seen corresponding path program 1 times [2020-12-09 12:56:29,814 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 12:56:29,814 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1931694153] [2020-12-09 12:56:29,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6b347a06-361b-4b8c-a7f4-7cf8cac5ba91/bin/utaipan/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2020-12-09 12:56:29,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 12:56:29,909 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-09 12:56:29,909 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 12:56:29,961 INFO L348 Elim1Store]: treesize reduction 27, result has 50.9 percent of original size [2020-12-09 12:56:29,962 INFO L382 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 2 case distinctions, treesize of input 12 treesize of output 33 [2020-12-09 12:56:29,963 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-09 12:56:29,995 INFO L625 ElimStorePlain]: treesize reduction 10, result has 73.7 percent of original size [2020-12-09 12:56:30,004 INFO L547 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-09 12:56:30,004 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:16, output treesize:16 [2020-12-09 12:56:30,020 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 12:56:30,020 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 12:56:30,021 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1931694153] [2020-12-09 12:56:30,021 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 12:56:30,021 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-12-09 12:56:30,021 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921473518] [2020-12-09 12:56:30,021 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 12:56:30,021 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 12:56:30,022 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 12:56:30,022 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 12:56:30,022 INFO L87 Difference]: Start difference. First operand 601 states and 1711 transitions. Second operand 3 states. [2020-12-09 12:56:30,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 12:56:30,097 INFO L93 Difference]: Finished difference Result 593 states and 1695 transitions. [2020-12-09 12:56:30,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 12:56:30,098 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2020-12-09 12:56:30,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 12:56:30,103 INFO L225 Difference]: With dead ends: 593 [2020-12-09 12:56:30,103 INFO L226 Difference]: Without dead ends: 593 [2020-12-09 12:56:30,103 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 12:56:30,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 593 states. [2020-12-09 12:56:30,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 593 to 593. [2020-12-09 12:56:30,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 593 states. [2020-12-09 12:56:30,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 593 states to 593 states and 1695 transitions. [2020-12-09 12:56:30,124 INFO L78 Accepts]: Start accepts. Automaton has 593 states and 1695 transitions. Word has length 3 [2020-12-09 12:56:30,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 12:56:30,124 INFO L481 AbstractCegarLoop]: Abstraction has 593 states and 1695 transitions. [2020-12-09 12:56:30,124 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 12:56:30,125 INFO L276 IsEmpty]: Start isEmpty. Operand 593 states and 1695 transitions. [2020-12-09 12:56:30,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-12-09 12:56:30,125 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 12:56:30,125 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-12-09 12:56:30,325 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-12-09 12:56:30,326 INFO L429 AbstractCegarLoop]: === Iteration 5 === [t1Err1REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, t1Err0REQUIRES_VIOLATION, t1Err1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, t2Err0REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, t2Err1REQUIRES_VIOLATION, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2REQUIRES_VIOLATION, t2Err1REQUIRES_VIOLATION, t2Err0REQUIRES_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t1Err0REQUIRES_VIOLATION]=== [2020-12-09 12:56:30,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 12:56:30,326 INFO L82 PathProgramCache]: Analyzing trace with hash 284343408, now seen corresponding path program 1 times [2020-12-09 12:56:30,326 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 12:56:30,326 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1923371611] [2020-12-09 12:56:30,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6b347a06-361b-4b8c-a7f4-7cf8cac5ba91/bin/utaipan/mathsat Starting monitored process 6 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with mathsat -unsat_core_generation=3 [2020-12-09 12:56:30,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 12:56:30,389 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-09 12:56:30,390 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 12:56:30,399 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 12:56:30,400 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 12:56:30,400 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1923371611] [2020-12-09 12:56:30,400 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 12:56:30,400 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-12-09 12:56:30,400 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928344891] [2020-12-09 12:56:30,400 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 12:56:30,401 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 12:56:30,401 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 12:56:30,401 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 12:56:30,401 INFO L87 Difference]: Start difference. First operand 593 states and 1695 transitions. Second operand 3 states. [2020-12-09 12:56:30,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 12:56:30,417 INFO L93 Difference]: Finished difference Result 529 states and 1503 transitions. [2020-12-09 12:56:30,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 12:56:30,418 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2020-12-09 12:56:30,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 12:56:30,422 INFO L225 Difference]: With dead ends: 529 [2020-12-09 12:56:30,422 INFO L226 Difference]: Without dead ends: 529 [2020-12-09 12:56:30,423 INFO L677 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 [2020-12-09 12:56:30,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 529 states. [2020-12-09 12:56:30,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 529 to 529. [2020-12-09 12:56:30,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 529 states. [2020-12-09 12:56:30,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 529 states to 529 states and 1503 transitions. [2020-12-09 12:56:30,450 INFO L78 Accepts]: Start accepts. Automaton has 529 states and 1503 transitions. Word has length 5 [2020-12-09 12:56:30,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 12:56:30,451 INFO L481 AbstractCegarLoop]: Abstraction has 529 states and 1503 transitions. [2020-12-09 12:56:30,451 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 12:56:30,451 INFO L276 IsEmpty]: Start isEmpty. Operand 529 states and 1503 transitions. [2020-12-09 12:56:30,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-12-09 12:56:30,451 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 12:56:30,451 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-12-09 12:56:30,652 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2020-12-09 12:56:30,652 INFO L429 AbstractCegarLoop]: === Iteration 6 === [t1Err1REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, t1Err0REQUIRES_VIOLATION, t1Err1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, t2Err0REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, t2Err1REQUIRES_VIOLATION, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2REQUIRES_VIOLATION, t2Err1REQUIRES_VIOLATION, t2Err0REQUIRES_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t1Err0REQUIRES_VIOLATION]=== [2020-12-09 12:56:30,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 12:56:30,652 INFO L82 PathProgramCache]: Analyzing trace with hash 284343377, now seen corresponding path program 1 times [2020-12-09 12:56:30,653 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 12:56:30,653 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [521040318] [2020-12-09 12:56:30,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6b347a06-361b-4b8c-a7f4-7cf8cac5ba91/bin/utaipan/mathsat Starting monitored process 7 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with mathsat -unsat_core_generation=3 [2020-12-09 12:56:30,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 12:56:30,697 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-09 12:56:30,698 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 12:56:30,705 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 12:56:30,705 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 12:56:30,705 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [521040318] [2020-12-09 12:56:30,705 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 12:56:30,705 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-12-09 12:56:30,705 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567530322] [2020-12-09 12:56:30,706 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 12:56:30,706 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 12:56:30,706 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 12:56:30,706 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 12:56:30,707 INFO L87 Difference]: Start difference. First operand 529 states and 1503 transitions. Second operand 3 states. [2020-12-09 12:56:30,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 12:56:30,716 INFO L93 Difference]: Finished difference Result 465 states and 1311 transitions. [2020-12-09 12:56:30,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 12:56:30,716 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2020-12-09 12:56:30,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 12:56:30,719 INFO L225 Difference]: With dead ends: 465 [2020-12-09 12:56:30,719 INFO L226 Difference]: Without dead ends: 465 [2020-12-09 12:56:30,720 INFO L677 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 [2020-12-09 12:56:30,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 465 states. [2020-12-09 12:56:30,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 465 to 465. [2020-12-09 12:56:30,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 465 states. [2020-12-09 12:56:30,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 465 states to 465 states and 1311 transitions. [2020-12-09 12:56:30,730 INFO L78 Accepts]: Start accepts. Automaton has 465 states and 1311 transitions. Word has length 5 [2020-12-09 12:56:30,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 12:56:30,730 INFO L481 AbstractCegarLoop]: Abstraction has 465 states and 1311 transitions. [2020-12-09 12:56:30,730 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 12:56:30,731 INFO L276 IsEmpty]: Start isEmpty. Operand 465 states and 1311 transitions. [2020-12-09 12:56:30,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-12-09 12:56:30,731 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 12:56:30,731 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-12-09 12:56:30,931 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 mathsat -unsat_core_generation=3 [2020-12-09 12:56:30,932 INFO L429 AbstractCegarLoop]: === Iteration 7 === [t1Err1REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, t1Err0REQUIRES_VIOLATION, t1Err1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, t2Err0REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, t2Err1REQUIRES_VIOLATION, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2REQUIRES_VIOLATION, t2Err1REQUIRES_VIOLATION, t2Err0REQUIRES_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t1Err0REQUIRES_VIOLATION]=== [2020-12-09 12:56:30,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 12:56:30,932 INFO L82 PathProgramCache]: Analyzing trace with hash 284343410, now seen corresponding path program 1 times [2020-12-09 12:56:30,932 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 12:56:30,932 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1685161197] [2020-12-09 12:56:30,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6b347a06-361b-4b8c-a7f4-7cf8cac5ba91/bin/utaipan/mathsat Starting monitored process 8 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with mathsat -unsat_core_generation=3 [2020-12-09 12:56:30,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 12:56:30,984 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-09 12:56:30,985 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 12:56:31,017 INFO L348 Elim1Store]: treesize reduction 44, result has 20.0 percent of original size [2020-12-09 12:56:31,017 INFO L382 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 3 case distinctions, treesize of input 22 treesize of output 23 [2020-12-09 12:56:31,019 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-09 12:56:31,027 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 12:56:31,031 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-12-09 12:56:31,031 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:21, output treesize:22 [2020-12-09 12:56:31,064 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 12:56:31,064 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 12:56:31,065 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1685161197] [2020-12-09 12:56:31,065 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 12:56:31,065 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-12-09 12:56:31,065 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833769876] [2020-12-09 12:56:31,065 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 12:56:31,065 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 12:56:31,066 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 12:56:31,066 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 12:56:31,066 INFO L87 Difference]: Start difference. First operand 465 states and 1311 transitions. Second operand 3 states. [2020-12-09 12:56:31,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 12:56:31,126 INFO L93 Difference]: Finished difference Result 401 states and 1119 transitions. [2020-12-09 12:56:31,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 12:56:31,127 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2020-12-09 12:56:31,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 12:56:31,130 INFO L225 Difference]: With dead ends: 401 [2020-12-09 12:56:31,130 INFO L226 Difference]: Without dead ends: 401 [2020-12-09 12:56:31,130 INFO L677 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 [2020-12-09 12:56:31,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 401 states. [2020-12-09 12:56:31,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 401 to 401. [2020-12-09 12:56:31,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 401 states. [2020-12-09 12:56:31,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 401 states to 401 states and 1119 transitions. [2020-12-09 12:56:31,140 INFO L78 Accepts]: Start accepts. Automaton has 401 states and 1119 transitions. Word has length 5 [2020-12-09 12:56:31,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 12:56:31,140 INFO L481 AbstractCegarLoop]: Abstraction has 401 states and 1119 transitions. [2020-12-09 12:56:31,140 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 12:56:31,140 INFO L276 IsEmpty]: Start isEmpty. Operand 401 states and 1119 transitions. [2020-12-09 12:56:31,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-12-09 12:56:31,141 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 12:56:31,141 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-12-09 12:56:31,341 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 mathsat -unsat_core_generation=3 [2020-12-09 12:56:31,343 INFO L429 AbstractCegarLoop]: === Iteration 8 === [t1Err1REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, t1Err0REQUIRES_VIOLATION, t1Err1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, t2Err0REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, t2Err1REQUIRES_VIOLATION, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2REQUIRES_VIOLATION, t2Err1REQUIRES_VIOLATION, t2Err0REQUIRES_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t1Err0REQUIRES_VIOLATION]=== [2020-12-09 12:56:31,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 12:56:31,344 INFO L82 PathProgramCache]: Analyzing trace with hash -1621862996, now seen corresponding path program 1 times [2020-12-09 12:56:31,345 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 12:56:31,345 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [26313866] [2020-12-09 12:56:31,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6b347a06-361b-4b8c-a7f4-7cf8cac5ba91/bin/utaipan/mathsat Starting monitored process 9 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with mathsat -unsat_core_generation=3 [2020-12-09 12:56:31,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 12:56:31,488 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 7 conjunts are in the unsatisfiable core [2020-12-09 12:56:31,489 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 12:56:31,512 INFO L348 Elim1Store]: treesize reduction 44, result has 20.0 percent of original size [2020-12-09 12:56:31,513 INFO L382 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 3 case distinctions, treesize of input 22 treesize of output 23 [2020-12-09 12:56:31,514 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-09 12:56:31,522 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 12:56:31,524 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-12-09 12:56:31,524 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:21, output treesize:22 [2020-12-09 12:56:31,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 12:56:31,606 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 12:56:31,606 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [26313866] [2020-12-09 12:56:31,606 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 12:56:31,606 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 12:56:31,607 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55803312] [2020-12-09 12:56:31,607 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-09 12:56:31,607 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 12:56:31,607 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-09 12:56:31,607 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-09 12:56:31,607 INFO L87 Difference]: Start difference. First operand 401 states and 1119 transitions. Second operand 5 states. [2020-12-09 12:56:31,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 12:56:31,847 INFO L93 Difference]: Finished difference Result 391 states and 1091 transitions. [2020-12-09 12:56:31,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-09 12:56:31,848 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 7 [2020-12-09 12:56:31,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 12:56:31,850 INFO L225 Difference]: With dead ends: 391 [2020-12-09 12:56:31,850 INFO L226 Difference]: Without dead ends: 391 [2020-12-09 12:56:31,851 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-09 12:56:31,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 391 states. [2020-12-09 12:56:31,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 391 to 391. [2020-12-09 12:56:31,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 391 states. [2020-12-09 12:56:31,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 1091 transitions. [2020-12-09 12:56:31,858 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 1091 transitions. Word has length 7 [2020-12-09 12:56:31,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 12:56:31,858 INFO L481 AbstractCegarLoop]: Abstraction has 391 states and 1091 transitions. [2020-12-09 12:56:31,859 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-09 12:56:31,859 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 1091 transitions. [2020-12-09 12:56:31,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-12-09 12:56:31,859 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 12:56:31,859 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-12-09 12:56:32,060 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 mathsat -unsat_core_generation=3 [2020-12-09 12:56:32,061 INFO L429 AbstractCegarLoop]: === Iteration 9 === [t1Err1REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, t1Err0REQUIRES_VIOLATION, t1Err1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, t2Err0REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, t2Err1REQUIRES_VIOLATION, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2REQUIRES_VIOLATION, t2Err1REQUIRES_VIOLATION, t2Err0REQUIRES_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, t1Err0REQUIRES_VIOLATION]=== [2020-12-09 12:56:32,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 12:56:32,062 INFO L82 PathProgramCache]: Analyzing trace with hash -1621862994, now seen corresponding path program 1 times [2020-12-09 12:56:32,063 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 12:56:32,063 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [146039946] [2020-12-09 12:56:32,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6b347a06-361b-4b8c-a7f4-7cf8cac5ba91/bin/utaipan/mathsat Starting monitored process 10 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with mathsat -unsat_core_generation=3 [2020-12-09 12:56:32,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-09 12:56:32,211 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-09 12:56:32,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-09 12:56:32,231 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-09 12:56:32,249 INFO L173 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2020-12-09 12:56:32,249 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-09 12:56:32,450 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 mathsat -unsat_core_generation=3 [2020-12-09 12:56:32,483 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 12:56:32 BasicIcfg [2020-12-09 12:56:32,483 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-09 12:56:32,483 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-09 12:56:32,484 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-09 12:56:32,484 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-09 12:56:32,484 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 12:56:20" (3/4) ... [2020-12-09 12:56:32,486 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-12-09 12:56:32,517 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_6b347a06-361b-4b8c-a7f4-7cf8cac5ba91/bin/utaipan/witness.graphml [2020-12-09 12:56:32,517 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-09 12:56:32,518 INFO L168 Benchmark]: Toolchain (without parser) took 12713.29 ms. Allocated memory was 69.2 MB in the beginning and 88.1 MB in the end (delta: 18.9 MB). Free memory was 48.8 MB in the beginning and 49.8 MB in the end (delta: -970.7 kB). Peak memory consumption was 16.7 MB. Max. memory is 16.1 GB. [2020-12-09 12:56:32,518 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 69.2 MB. Free memory was 52.3 MB in the beginning and 52.2 MB in the end (delta: 84.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 12:56:32,519 INFO L168 Benchmark]: CACSL2BoogieTranslator took 499.32 ms. Allocated memory was 69.2 MB in the beginning and 88.1 MB in the end (delta: 18.9 MB). Free memory was 48.6 MB in the beginning and 45.4 MB in the end (delta: 3.2 MB). Peak memory consumption was 20.9 MB. Max. memory is 16.1 GB. [2020-12-09 12:56:32,519 INFO L168 Benchmark]: Boogie Procedure Inliner took 34.96 ms. Allocated memory is still 88.1 MB. Free memory was 45.0 MB in the beginning and 42.9 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 12:56:32,519 INFO L168 Benchmark]: Boogie Preprocessor took 25.61 ms. Allocated memory is still 88.1 MB. Free memory was 42.9 MB in the beginning and 70.4 MB in the end (delta: -27.5 MB). Peak memory consumption was 2.4 MB. Max. memory is 16.1 GB. [2020-12-09 12:56:32,520 INFO L168 Benchmark]: RCFGBuilder took 365.46 ms. Allocated memory is still 88.1 MB. Free memory was 70.4 MB in the beginning and 45.2 MB in the end (delta: 25.2 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.1 GB. [2020-12-09 12:56:32,520 INFO L168 Benchmark]: TraceAbstraction took 11749.74 ms. Allocated memory is still 88.1 MB. Free memory was 44.7 MB in the beginning and 52.6 MB in the end (delta: -7.9 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 12:56:32,520 INFO L168 Benchmark]: Witness Printer took 33.96 ms. Allocated memory is still 88.1 MB. Free memory was 52.6 MB in the beginning and 49.8 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 12:56:32,522 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 69.2 MB. Free memory was 52.3 MB in the beginning and 52.2 MB in the end (delta: 84.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 499.32 ms. Allocated memory was 69.2 MB in the beginning and 88.1 MB in the end (delta: 18.9 MB). Free memory was 48.6 MB in the beginning and 45.4 MB in the end (delta: 3.2 MB). Peak memory consumption was 20.9 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 34.96 ms. Allocated memory is still 88.1 MB. Free memory was 45.0 MB in the beginning and 42.9 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 25.61 ms. Allocated memory is still 88.1 MB. Free memory was 42.9 MB in the beginning and 70.4 MB in the end (delta: -27.5 MB). Peak memory consumption was 2.4 MB. Max. memory is 16.1 GB. * RCFGBuilder took 365.46 ms. Allocated memory is still 88.1 MB. Free memory was 70.4 MB in the beginning and 45.2 MB in the end (delta: 25.2 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.1 GB. * TraceAbstraction took 11749.74 ms. Allocated memory is still 88.1 MB. Free memory was 44.7 MB in the beginning and 52.6 MB in the end (delta: -7.9 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 33.96 ms. Allocated memory is still 88.1 MB. Free memory was 52.6 MB in the beginning and 49.8 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 755 VarBasedMoverChecksPositive, 33 VarBasedMoverChecksNegative, 5 SemBasedMoverChecksPositive, 28 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 1.1s, 150 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 7.6s, 81 PlacesBefore, 39 PlacesAfterwards, 79 TransitionsBefore, 35 TransitionsAfterwards, 1404 CoEnabledTransitionPairs, 5 FixpointIterations, 34 TrivialSequentialCompositions, 27 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 4 ConcurrentYvCompositions, 2 ChoiceCompositions, 67 TotalNumberOfCompositions, 3493 MoverChecksTotal - CounterExampleResult [Line: 1044]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L1037] 0 int size; [L1038] 0 int ind; [L1039] 0 int j = 2, i = 1; [L1057] 0 size = __VERIFIER_nondet_int() [L1058] COND FALSE 0 !(size < 1 || size > 20) [L1061] 0 int *a = (int *)malloc(size); [L1062] 0 pthread_t id1, id2; [L1063] 0 ind = 0 [L1064] FCALL, FORK 0 pthread_create(&id1, ((void *)0), t1, a) VAL [arg={-2147483648:0}, i=1, ind=0, j=2, size=2] [L1041] 1 int *a = (int *)arg; VAL [a={-2147483648:0}, arg={-2147483648:0}, arg={-2147483648:0}, i=1, ind=0, j=2, size=2] [L1042] COND TRUE 1 ind < size - 1 VAL [a={-2147483648:0}, arg={-2147483648:0}, arg={-2147483648:0}, i=1, ind=0, j=2, size=2] [L1043] 1 ++ind [L1044] 1 a[ind] = i - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 75 locations, 12 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 11.6s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 7.6s, HoareTripleCheckerStatistics: 201 SDtfs, 170 SDslu, 88 SDs, 0 SdLazy, 121 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 25 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=615occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 38 NumberOfCodeBlocks, 38 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 23 ConstructedInterpolants, 10 QuantifiedInterpolants, 1059 SizeOfPredicates, 19 NumberOfNonLiveVariables, 277 ConjunctsInSsa, 25 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...