./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/memsafety-ext3/naturalNumbers1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version e943c265 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_116f5fb9-7860-4ad3-a0cb-b3074e3ad0f3/bin/utaipan-9zjyvhn0QE/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_116f5fb9-7860-4ad3-a0cb-b3074e3ad0f3/bin/utaipan-9zjyvhn0QE/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_116f5fb9-7860-4ad3-a0cb-b3074e3ad0f3/bin/utaipan-9zjyvhn0QE/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_116f5fb9-7860-4ad3-a0cb-b3074e3ad0f3/bin/utaipan-9zjyvhn0QE/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety-ext3/naturalNumbers1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_116f5fb9-7860-4ad3-a0cb-b3074e3ad0f3/bin/utaipan-9zjyvhn0QE/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_116f5fb9-7860-4ad3-a0cb-b3074e3ad0f3/bin/utaipan-9zjyvhn0QE --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 68fe5d136456ecb82ea00426715bf936d3e38ca581ddd26cec97e5010ad5777c ............................................................................................................................................. Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_116f5fb9-7860-4ad3-a0cb-b3074e3ad0f3/bin/utaipan-9zjyvhn0QE/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_116f5fb9-7860-4ad3-a0cb-b3074e3ad0f3/bin/utaipan-9zjyvhn0QE/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_116f5fb9-7860-4ad3-a0cb-b3074e3ad0f3/bin/utaipan-9zjyvhn0QE/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_116f5fb9-7860-4ad3-a0cb-b3074e3ad0f3/bin/utaipan-9zjyvhn0QE/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety-ext3/naturalNumbers1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_116f5fb9-7860-4ad3-a0cb-b3074e3ad0f3/bin/utaipan-9zjyvhn0QE/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_116f5fb9-7860-4ad3-a0cb-b3074e3ad0f3/bin/utaipan-9zjyvhn0QE --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 68fe5d136456ecb82ea00426715bf936d3e38ca581ddd26cec97e5010ad5777c ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 0.2.1-dev-e943c26 [2021-10-24 10:52:45,644 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-24 10:52:45,647 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-24 10:52:45,683 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-24 10:52:45,685 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-24 10:52:45,686 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-24 10:52:45,689 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-24 10:52:45,695 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-24 10:52:45,698 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-24 10:52:45,702 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-24 10:52:45,703 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-24 10:52:45,706 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-24 10:52:45,707 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-24 10:52:45,708 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-24 10:52:45,710 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-24 10:52:45,712 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-24 10:52:45,713 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-24 10:52:45,714 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-24 10:52:45,717 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-24 10:52:45,720 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-24 10:52:45,722 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-24 10:52:45,724 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-24 10:52:45,725 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-24 10:52:45,726 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-24 10:52:45,730 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-24 10:52:45,731 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-24 10:52:45,732 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-24 10:52:45,733 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-24 10:52:45,734 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-24 10:52:45,735 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-24 10:52:45,736 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-24 10:52:45,737 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-24 10:52:45,738 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-24 10:52:45,739 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-24 10:52:45,741 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-24 10:52:45,741 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-24 10:52:45,743 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-24 10:52:45,743 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-24 10:52:45,744 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-24 10:52:45,746 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-24 10:52:45,752 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-24 10:52:45,753 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_116f5fb9-7860-4ad3-a0cb-b3074e3ad0f3/bin/utaipan-9zjyvhn0QE/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2021-10-24 10:52:45,806 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-24 10:52:45,806 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-24 10:52:45,807 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-24 10:52:45,808 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-24 10:52:45,808 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-24 10:52:45,808 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-24 10:52:45,808 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-24 10:52:45,808 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-24 10:52:45,808 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-24 10:52:45,809 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-24 10:52:45,809 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-24 10:52:45,809 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-24 10:52:45,809 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-24 10:52:45,809 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-24 10:52:45,810 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-24 10:52:45,810 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-24 10:52:45,810 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-24 10:52:45,811 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-24 10:52:45,811 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-24 10:52:45,811 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-24 10:52:45,811 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-24 10:52:45,811 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-24 10:52:45,812 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-24 10:52:45,812 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-24 10:52:45,812 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-24 10:52:45,812 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-24 10:52:45,812 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-24 10:52:45,812 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-24 10:52:45,813 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-24 10:52:45,813 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-24 10:52:45,813 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-24 10:52:45,813 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-24 10:52:45,813 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-24 10:52:45,814 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-24 10:52:45,814 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-24 10:52:45,814 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-24 10:52:45,814 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-24 10:52:45,814 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-24 10:52:45,815 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-24 10:52:45,815 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_116f5fb9-7860-4ad3-a0cb-b3074e3ad0f3/bin/utaipan-9zjyvhn0QE/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_116f5fb9-7860-4ad3-a0cb-b3074e3ad0f3/bin/utaipan-9zjyvhn0QE Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 68fe5d136456ecb82ea00426715bf936d3e38ca581ddd26cec97e5010ad5777c [2021-10-24 10:52:46,063 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-24 10:52:46,093 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-24 10:52:46,096 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-24 10:52:46,098 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-24 10:52:46,098 INFO L275 PluginConnector]: CDTParser initialized [2021-10-24 10:52:46,099 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_116f5fb9-7860-4ad3-a0cb-b3074e3ad0f3/bin/utaipan-9zjyvhn0QE/../../sv-benchmarks/c/memsafety-ext3/naturalNumbers1.c [2021-10-24 10:52:46,162 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_116f5fb9-7860-4ad3-a0cb-b3074e3ad0f3/bin/utaipan-9zjyvhn0QE/data/75dd7cdd0/f8754c78bcc543589de07c65981b95c9/FLAG16943e4e8 [2021-10-24 10:52:46,674 INFO L306 CDTParser]: Found 1 translation units. [2021-10-24 10:52:46,675 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_116f5fb9-7860-4ad3-a0cb-b3074e3ad0f3/sv-benchmarks/c/memsafety-ext3/naturalNumbers1.c [2021-10-24 10:52:46,686 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_116f5fb9-7860-4ad3-a0cb-b3074e3ad0f3/bin/utaipan-9zjyvhn0QE/data/75dd7cdd0/f8754c78bcc543589de07c65981b95c9/FLAG16943e4e8 [2021-10-24 10:52:47,082 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_116f5fb9-7860-4ad3-a0cb-b3074e3ad0f3/bin/utaipan-9zjyvhn0QE/data/75dd7cdd0/f8754c78bcc543589de07c65981b95c9 [2021-10-24 10:52:47,085 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-24 10:52:47,092 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-24 10:52:47,103 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-24 10:52:47,104 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-24 10:52:47,108 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-24 10:52:47,110 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 10:52:47" (1/1) ... [2021-10-24 10:52:47,112 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@31b0b911 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:52:47, skipping insertion in model container [2021-10-24 10:52:47,114 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 10:52:47" (1/1) ... [2021-10-24 10:52:47,123 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-24 10:52:47,141 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-24 10:52:47,366 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-24 10:52:47,376 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-10-24 10:52:47,377 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@254d464a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:52:47, skipping insertion in model container [2021-10-24 10:52:47,378 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-24 10:52:47,378 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-10-24 10:52:47,381 INFO L168 Benchmark]: Toolchain (without parser) took 287.61 ms. Allocated memory was 98.6 MB in the beginning and 132.1 MB in the end (delta: 33.6 MB). Free memory was 69.8 MB in the beginning and 110.3 MB in the end (delta: -40.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-24 10:52:47,382 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 98.6 MB. Free memory is still 53.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-24 10:52:47,384 INFO L168 Benchmark]: CACSL2BoogieTranslator took 274.69 ms. Allocated memory was 98.6 MB in the beginning and 132.1 MB in the end (delta: 33.6 MB). Free memory was 69.5 MB in the beginning and 110.3 MB in the end (delta: -40.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-24 10:52:47,387 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 98.6 MB. Free memory is still 53.3 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 274.69 ms. Allocated memory was 98.6 MB in the beginning and 132.1 MB in the end (delta: 33.6 MB). Free memory was 69.5 MB in the beginning and 110.3 MB in the end (delta: -40.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 15]: 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 0.2.1-dev-e943c26 [2021-10-24 10:52:49,826 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-24 10:52:49,829 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-24 10:52:49,896 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-24 10:52:49,897 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-24 10:52:49,903 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-24 10:52:49,905 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-24 10:52:49,913 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-24 10:52:49,917 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-24 10:52:49,925 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-24 10:52:49,927 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-24 10:52:49,929 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-24 10:52:49,930 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-24 10:52:49,932 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-24 10:52:49,935 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-24 10:52:49,939 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-24 10:52:49,941 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-24 10:52:49,942 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-24 10:52:49,945 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-24 10:52:49,956 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-24 10:52:49,959 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-24 10:52:49,961 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-24 10:52:49,964 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-24 10:52:49,967 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-24 10:52:49,976 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-24 10:52:49,977 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-24 10:52:49,977 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-24 10:52:49,979 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-24 10:52:49,980 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-24 10:52:49,981 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-24 10:52:49,982 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-24 10:52:49,983 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-24 10:52:49,985 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-24 10:52:49,986 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-24 10:52:49,987 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-24 10:52:49,988 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-24 10:52:49,989 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-24 10:52:49,989 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-24 10:52:49,996 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-24 10:52:49,997 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-24 10:52:49,999 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-24 10:52:50,004 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_116f5fb9-7860-4ad3-a0cb-b3074e3ad0f3/bin/utaipan-9zjyvhn0QE/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2021-10-24 10:52:50,030 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-24 10:52:50,031 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-24 10:52:50,032 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-24 10:52:50,032 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-24 10:52:50,032 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-24 10:52:50,032 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-24 10:52:50,033 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-24 10:52:50,033 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-24 10:52:50,033 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-24 10:52:50,034 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-24 10:52:50,034 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-24 10:52:50,034 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-24 10:52:50,035 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-24 10:52:50,035 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-24 10:52:50,035 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-24 10:52:50,035 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-24 10:52:50,035 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-24 10:52:50,036 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-24 10:52:50,036 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-24 10:52:50,036 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-24 10:52:50,036 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-24 10:52:50,037 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-24 10:52:50,037 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-24 10:52:50,037 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-24 10:52:50,037 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-24 10:52:50,037 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-24 10:52:50,038 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-24 10:52:50,038 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-24 10:52:50,038 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-24 10:52:50,038 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-24 10:52:50,039 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-24 10:52:50,039 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-24 10:52:50,039 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-24 10:52:50,039 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-24 10:52:50,040 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-24 10:52:50,040 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-24 10:52:50,040 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_116f5fb9-7860-4ad3-a0cb-b3074e3ad0f3/bin/utaipan-9zjyvhn0QE/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_116f5fb9-7860-4ad3-a0cb-b3074e3ad0f3/bin/utaipan-9zjyvhn0QE Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 68fe5d136456ecb82ea00426715bf936d3e38ca581ddd26cec97e5010ad5777c [2021-10-24 10:52:50,511 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-24 10:52:50,545 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-24 10:52:50,549 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-24 10:52:50,551 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-24 10:52:50,551 INFO L275 PluginConnector]: CDTParser initialized [2021-10-24 10:52:50,553 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_116f5fb9-7860-4ad3-a0cb-b3074e3ad0f3/bin/utaipan-9zjyvhn0QE/../../sv-benchmarks/c/memsafety-ext3/naturalNumbers1.c [2021-10-24 10:52:50,641 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_116f5fb9-7860-4ad3-a0cb-b3074e3ad0f3/bin/utaipan-9zjyvhn0QE/data/1ea567421/f81e060a1d0743f69a62d9ef97b37666/FLAG50637803f [2021-10-24 10:52:51,266 INFO L306 CDTParser]: Found 1 translation units. [2021-10-24 10:52:51,267 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_116f5fb9-7860-4ad3-a0cb-b3074e3ad0f3/sv-benchmarks/c/memsafety-ext3/naturalNumbers1.c [2021-10-24 10:52:51,274 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_116f5fb9-7860-4ad3-a0cb-b3074e3ad0f3/bin/utaipan-9zjyvhn0QE/data/1ea567421/f81e060a1d0743f69a62d9ef97b37666/FLAG50637803f [2021-10-24 10:52:51,291 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_116f5fb9-7860-4ad3-a0cb-b3074e3ad0f3/bin/utaipan-9zjyvhn0QE/data/1ea567421/f81e060a1d0743f69a62d9ef97b37666 [2021-10-24 10:52:51,298 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-24 10:52:51,300 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-24 10:52:51,304 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-24 10:52:51,304 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-24 10:52:51,308 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-24 10:52:51,309 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 10:52:51" (1/1) ... [2021-10-24 10:52:51,310 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@111a1107 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:52:51, skipping insertion in model container [2021-10-24 10:52:51,310 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 10:52:51" (1/1) ... [2021-10-24 10:52:51,319 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-24 10:52:51,333 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-24 10:52:51,510 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-24 10:52:51,523 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-10-24 10:52:51,525 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-24 10:52:51,532 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-24 10:52:51,542 INFO L203 MainTranslator]: Completed pre-run [2021-10-24 10:52:51,585 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-24 10:52:51,623 INFO L208 MainTranslator]: Completed translation [2021-10-24 10:52:51,624 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:52:51 WrapperNode [2021-10-24 10:52:51,624 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-24 10:52:51,627 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-24 10:52:51,627 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-24 10:52:51,628 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-24 10:52:51,636 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:52:51" (1/1) ... [2021-10-24 10:52:51,650 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:52:51" (1/1) ... [2021-10-24 10:52:51,698 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-24 10:52:51,699 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-24 10:52:51,699 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-24 10:52:51,703 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-24 10:52:51,712 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:52:51" (1/1) ... [2021-10-24 10:52:51,713 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:52:51" (1/1) ... [2021-10-24 10:52:51,720 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:52:51" (1/1) ... [2021-10-24 10:52:51,720 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:52:51" (1/1) ... [2021-10-24 10:52:51,741 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:52:51" (1/1) ... [2021-10-24 10:52:51,750 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:52:51" (1/1) ... [2021-10-24 10:52:51,751 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:52:51" (1/1) ... [2021-10-24 10:52:51,754 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-24 10:52:51,757 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-24 10:52:51,757 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-24 10:52:51,757 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-24 10:52:51,760 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:52:51" (1/1) ... [2021-10-24 10:52:51,769 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-24 10:52:51,781 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_116f5fb9-7860-4ad3-a0cb-b3074e3ad0f3/bin/utaipan-9zjyvhn0QE/z3 [2021-10-24 10:52:51,795 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_116f5fb9-7860-4ad3-a0cb-b3074e3ad0f3/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-24 10:52:51,814 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_116f5fb9-7860-4ad3-a0cb-b3074e3ad0f3/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-24 10:52:51,848 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-24 10:52:51,848 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-24 10:52:51,848 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-24 10:52:51,849 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-24 10:52:51,849 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-24 10:52:51,849 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-24 10:52:52,125 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-24 10:52:52,125 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-10-24 10:52:52,127 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:52:52 BoogieIcfgContainer [2021-10-24 10:52:52,128 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-24 10:52:52,130 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-24 10:52:52,130 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-24 10:52:52,134 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-24 10:52:52,134 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 10:52:51" (1/3) ... [2021-10-24 10:52:52,135 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c12fa6d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 10:52:52, skipping insertion in model container [2021-10-24 10:52:52,136 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:52:51" (2/3) ... [2021-10-24 10:52:52,136 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c12fa6d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 10:52:52, skipping insertion in model container [2021-10-24 10:52:52,136 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:52:52" (3/3) ... [2021-10-24 10:52:52,138 INFO L111 eAbstractionObserver]: Analyzing ICFG naturalNumbers1.c [2021-10-24 10:52:52,145 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-24 10:52:52,145 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-10-24 10:52:52,216 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-24 10:52:52,237 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-24 10:52:52,238 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-10-24 10:52:52,254 INFO L276 IsEmpty]: Start isEmpty. Operand has 13 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 12 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:52:52,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-24 10:52:52,262 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:52:52,262 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-10-24 10:52:52,263 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-24 10:52:52,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:52:52,270 INFO L82 PathProgramCache]: Analyzing trace with hash 925797, now seen corresponding path program 1 times [2021-10-24 10:52:52,290 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 10:52:52,290 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [753012063] [2021-10-24 10:52:52,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:52:52,292 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 10:52:52,292 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_116f5fb9-7860-4ad3-a0cb-b3074e3ad0f3/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 10:52:52,296 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_116f5fb9-7860-4ad3-a0cb-b3074e3ad0f3/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 10:52:52,332 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_116f5fb9-7860-4ad3-a0cb-b3074e3ad0f3/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-24 10:52:52,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:52:52,416 INFO L263 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-24 10:52:52,421 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 10:52:52,582 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-24 10:52:52,627 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:52:52,627 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 10:52:52,665 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:52:52,666 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 10:52:52,667 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [753012063] [2021-10-24 10:52:52,668 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [753012063] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 10:52:52,669 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 10:52:52,669 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-24 10:52:52,671 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276276468] [2021-10-24 10:52:52,677 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-24 10:52:52,678 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-24 10:52:52,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-24 10:52:52,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-24 10:52:52,701 INFO L87 Difference]: Start difference. First operand has 13 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 12 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:52:52,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:52:52,746 INFO L93 Difference]: Finished difference Result 12 states and 13 transitions. [2021-10-24 10:52:52,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-24 10:52:52,748 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2021-10-24 10:52:52,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:52:52,755 INFO L225 Difference]: With dead ends: 12 [2021-10-24 10:52:52,756 INFO L226 Difference]: Without dead ends: 10 [2021-10-24 10:52:52,757 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.5ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-24 10:52:52,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2021-10-24 10:52:52,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2021-10-24 10:52:52,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 8 states have (on average 1.375) internal successors, (11), 9 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:52:52,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 11 transitions. [2021-10-24 10:52:52,786 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 11 transitions. Word has length 4 [2021-10-24 10:52:52,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:52:52,787 INFO L470 AbstractCegarLoop]: Abstraction has 10 states and 11 transitions. [2021-10-24 10:52:52,787 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:52:52,787 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 11 transitions. [2021-10-24 10:52:52,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-24 10:52:52,788 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:52:52,788 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-10-24 10:52:52,803 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_116f5fb9-7860-4ad3-a0cb-b3074e3ad0f3/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-24 10:52:52,999 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_116f5fb9-7860-4ad3-a0cb-b3074e3ad0f3/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 10:52:52,999 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-24 10:52:53,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:52:53,001 INFO L82 PathProgramCache]: Analyzing trace with hash 925798, now seen corresponding path program 1 times [2021-10-24 10:52:53,001 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 10:52:53,001 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [250742022] [2021-10-24 10:52:53,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:52:53,002 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 10:52:53,002 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_116f5fb9-7860-4ad3-a0cb-b3074e3ad0f3/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 10:52:53,003 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_116f5fb9-7860-4ad3-a0cb-b3074e3ad0f3/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 10:52:53,028 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_116f5fb9-7860-4ad3-a0cb-b3074e3ad0f3/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-24 10:52:53,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:52:53,048 INFO L263 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-24 10:52:53,049 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 10:52:53,091 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-24 10:52:53,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:52:53,137 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 10:52:53,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:52:53,351 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 10:52:53,352 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [250742022] [2021-10-24 10:52:53,352 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [250742022] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 10:52:53,352 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 10:52:53,352 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-10-24 10:52:53,353 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901211836] [2021-10-24 10:52:53,354 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-24 10:52:53,354 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-24 10:52:53,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-24 10:52:53,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-24 10:52:53,356 INFO L87 Difference]: Start difference. First operand 10 states and 11 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:52:53,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:52:53,449 INFO L93 Difference]: Finished difference Result 22 states and 23 transitions. [2021-10-24 10:52:53,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-24 10:52:53,452 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2021-10-24 10:52:53,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:52:53,453 INFO L225 Difference]: With dead ends: 22 [2021-10-24 10:52:53,453 INFO L226 Difference]: Without dead ends: 22 [2021-10-24 10:52:53,454 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 73.0ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-24 10:52:53,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2021-10-24 10:52:53,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 15. [2021-10-24 10:52:53,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 14 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:52:53,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 18 transitions. [2021-10-24 10:52:53,458 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 18 transitions. Word has length 4 [2021-10-24 10:52:53,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:52:53,458 INFO L470 AbstractCegarLoop]: Abstraction has 15 states and 18 transitions. [2021-10-24 10:52:53,458 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:52:53,458 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 18 transitions. [2021-10-24 10:52:53,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-24 10:52:53,459 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:52:53,459 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-24 10:52:53,487 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_116f5fb9-7860-4ad3-a0cb-b3074e3ad0f3/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-24 10:52:53,676 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_116f5fb9-7860-4ad3-a0cb-b3074e3ad0f3/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 10:52:53,677 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-24 10:52:53,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:52:53,678 INFO L82 PathProgramCache]: Analyzing trace with hash 1810601999, now seen corresponding path program 1 times [2021-10-24 10:52:53,679 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 10:52:53,679 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1209683666] [2021-10-24 10:52:53,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:52:53,679 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 10:52:53,680 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_116f5fb9-7860-4ad3-a0cb-b3074e3ad0f3/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 10:52:53,681 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_116f5fb9-7860-4ad3-a0cb-b3074e3ad0f3/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 10:52:53,685 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_116f5fb9-7860-4ad3-a0cb-b3074e3ad0f3/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-24 10:52:53,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:52:53,761 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-24 10:52:53,762 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 10:52:53,881 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:52:53,882 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 33 treesize of output 13 [2021-10-24 10:52:53,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:52:53,910 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 10:52:54,068 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:52:54,069 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 10:52:54,069 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1209683666] [2021-10-24 10:52:54,069 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1209683666] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 10:52:54,069 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 10:52:54,069 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-10-24 10:52:54,070 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37503256] [2021-10-24 10:52:54,070 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-24 10:52:54,070 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-24 10:52:54,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-24 10:52:54,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-24 10:52:54,072 INFO L87 Difference]: Start difference. First operand 15 states and 18 transitions. Second operand has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 6 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:52:54,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:52:54,158 INFO L93 Difference]: Finished difference Result 15 states and 17 transitions. [2021-10-24 10:52:54,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-24 10:52:54,160 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 6 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-10-24 10:52:54,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:52:54,161 INFO L225 Difference]: With dead ends: 15 [2021-10-24 10:52:54,161 INFO L226 Difference]: Without dead ends: 15 [2021-10-24 10:52:54,162 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 110.3ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-24 10:52:54,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2021-10-24 10:52:54,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2021-10-24 10:52:54,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 14 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:52:54,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions. [2021-10-24 10:52:54,165 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 17 transitions. Word has length 7 [2021-10-24 10:52:54,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:52:54,166 INFO L470 AbstractCegarLoop]: Abstraction has 15 states and 17 transitions. [2021-10-24 10:52:54,166 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 6 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:52:54,166 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2021-10-24 10:52:54,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-24 10:52:54,167 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:52:54,167 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 10:52:54,183 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_116f5fb9-7860-4ad3-a0cb-b3074e3ad0f3/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-24 10:52:54,377 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_116f5fb9-7860-4ad3-a0cb-b3074e3ad0f3/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 10:52:54,377 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-24 10:52:54,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:52:54,378 INFO L82 PathProgramCache]: Analyzing trace with hash 528133503, now seen corresponding path program 1 times [2021-10-24 10:52:54,378 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 10:52:54,379 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [482965975] [2021-10-24 10:52:54,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:52:54,379 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 10:52:54,379 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_116f5fb9-7860-4ad3-a0cb-b3074e3ad0f3/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 10:52:54,380 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_116f5fb9-7860-4ad3-a0cb-b3074e3ad0f3/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 10:52:54,383 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_116f5fb9-7860-4ad3-a0cb-b3074e3ad0f3/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-24 10:52:54,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:52:54,432 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-24 10:52:54,433 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 10:52:54,477 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:52:54,477 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 10:52:54,532 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:52:54,532 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 10:52:54,533 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [482965975] [2021-10-24 10:52:54,533 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [482965975] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-24 10:52:54,533 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [723457764] [2021-10-24 10:52:54,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:52:54,534 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-24 10:52:54,534 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_116f5fb9-7860-4ad3-a0cb-b3074e3ad0f3/bin/utaipan-9zjyvhn0QE/cvc4 [2021-10-24 10:52:54,536 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_116f5fb9-7860-4ad3-a0cb-b3074e3ad0f3/bin/utaipan-9zjyvhn0QE/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-24 10:52:54,559 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_116f5fb9-7860-4ad3-a0cb-b3074e3ad0f3/bin/utaipan-9zjyvhn0QE/cvc4 --incremental --print-success --lang smt (6)] Waiting until timeout for monitored process [2021-10-24 10:52:54,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:52:54,636 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-24 10:52:54,636 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 10:52:54,673 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:52:54,674 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 10:52:54,709 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:52:54,709 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [723457764] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-24 10:52:54,710 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1594302339] [2021-10-24 10:52:54,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:52:54,710 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-24 10:52:54,711 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_116f5fb9-7860-4ad3-a0cb-b3074e3ad0f3/bin/utaipan-9zjyvhn0QE/z3 [2021-10-24 10:52:54,713 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_116f5fb9-7860-4ad3-a0cb-b3074e3ad0f3/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-24 10:52:54,723 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_116f5fb9-7860-4ad3-a0cb-b3074e3ad0f3/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-10-24 10:52:54,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:52:54,797 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-24 10:52:54,798 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 10:52:54,830 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:52:54,831 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 10:52:54,875 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:52:54,876 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1594302339] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-24 10:52:54,876 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-24 10:52:54,876 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4, 4, 4, 4] total 6 [2021-10-24 10:52:54,876 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733756763] [2021-10-24 10:52:54,878 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-24 10:52:54,879 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-24 10:52:54,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-24 10:52:54,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-10-24 10:52:54,881 INFO L87 Difference]: Start difference. First operand 15 states and 17 transitions. Second operand has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:52:54,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:52:54,974 INFO L93 Difference]: Finished difference Result 30 states and 30 transitions. [2021-10-24 10:52:54,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-24 10:52:54,975 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-10-24 10:52:54,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:52:54,976 INFO L225 Difference]: With dead ends: 30 [2021-10-24 10:52:54,976 INFO L226 Difference]: Without dead ends: 30 [2021-10-24 10:52:54,977 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 38.5ms TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2021-10-24 10:52:54,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2021-10-24 10:52:54,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 20. [2021-10-24 10:52:54,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 18 states have (on average 1.3333333333333333) internal successors, (24), 19 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:52:54,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 24 transitions. [2021-10-24 10:52:54,981 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 24 transitions. Word has length 9 [2021-10-24 10:52:54,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:52:54,982 INFO L470 AbstractCegarLoop]: Abstraction has 20 states and 24 transitions. [2021-10-24 10:52:54,982 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:52:54,982 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 24 transitions. [2021-10-24 10:52:54,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-24 10:52:54,982 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:52:54,983 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2021-10-24 10:52:54,991 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_116f5fb9-7860-4ad3-a0cb-b3074e3ad0f3/bin/utaipan-9zjyvhn0QE/cvc4 --incremental --print-success --lang smt (6)] Forceful destruction successful, exit code 0 [2021-10-24 10:52:55,193 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_116f5fb9-7860-4ad3-a0cb-b3074e3ad0f3/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (5)] Ended with exit code 0 [2021-10-24 10:52:55,407 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_116f5fb9-7860-4ad3-a0cb-b3074e3ad0f3/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2021-10-24 10:52:55,587 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_116f5fb9-7860-4ad3-a0cb-b3074e3ad0f3/bin/utaipan-9zjyvhn0QE/cvc4 --incremental --print-success --lang smt,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_116f5fb9-7860-4ad3-a0cb-b3074e3ad0f3/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_116f5fb9-7860-4ad3-a0cb-b3074e3ad0f3/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-24 10:52:55,587 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-24 10:52:55,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:52:55,588 INFO L82 PathProgramCache]: Analyzing trace with hash -806218973, now seen corresponding path program 1 times [2021-10-24 10:52:55,588 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 10:52:55,588 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [868771961] [2021-10-24 10:52:55,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:52:55,589 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 10:52:55,589 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_116f5fb9-7860-4ad3-a0cb-b3074e3ad0f3/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 10:52:55,590 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_116f5fb9-7860-4ad3-a0cb-b3074e3ad0f3/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 10:52:55,602 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_116f5fb9-7860-4ad3-a0cb-b3074e3ad0f3/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-10-24 10:52:55,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:52:55,675 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-24 10:52:55,676 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 10:52:55,801 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:52:55,802 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 33 treesize of output 13 [2021-10-24 10:52:55,825 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:52:55,826 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 10:52:56,023 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:52:56,023 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 10:52:56,024 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [868771961] [2021-10-24 10:52:56,024 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [868771961] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-24 10:52:56,024 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [31402759] [2021-10-24 10:52:56,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:52:56,025 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-24 10:52:56,025 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_116f5fb9-7860-4ad3-a0cb-b3074e3ad0f3/bin/utaipan-9zjyvhn0QE/cvc4 [2021-10-24 10:52:56,029 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_116f5fb9-7860-4ad3-a0cb-b3074e3ad0f3/bin/utaipan-9zjyvhn0QE/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-24 10:52:56,051 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_116f5fb9-7860-4ad3-a0cb-b3074e3ad0f3/bin/utaipan-9zjyvhn0QE/cvc4 --incremental --print-success --lang smt (9)] Waiting until timeout for monitored process [2021-10-24 10:52:56,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:52:56,168 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-24 10:52:56,169 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 10:52:56,313 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:52:56,314 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 33 treesize of output 13 [2021-10-24 10:52:56,348 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:52:56,348 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 10:52:56,448 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:52:56,449 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [31402759] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-24 10:52:56,449 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1780280000] [2021-10-24 10:52:56,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:52:56,449 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-24 10:52:56,450 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_116f5fb9-7860-4ad3-a0cb-b3074e3ad0f3/bin/utaipan-9zjyvhn0QE/z3 [2021-10-24 10:52:56,451 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_116f5fb9-7860-4ad3-a0cb-b3074e3ad0f3/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-24 10:52:56,475 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_116f5fb9-7860-4ad3-a0cb-b3074e3ad0f3/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-10-24 10:52:56,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:52:56,560 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-24 10:52:56,561 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 10:52:56,691 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:52:56,691 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 33 treesize of output 13 [2021-10-24 10:52:56,723 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:52:56,723 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 10:52:56,818 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:52:56,819 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1780280000] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-24 10:52:56,819 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-24 10:52:56,819 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 5, 5] total 8 [2021-10-24 10:52:56,820 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459723811] [2021-10-24 10:52:56,820 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-24 10:52:56,821 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-24 10:52:56,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-24 10:52:56,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-10-24 10:52:56,822 INFO L87 Difference]: Start difference. First operand 20 states and 24 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:52:57,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:52:57,003 INFO L93 Difference]: Finished difference Result 20 states and 23 transitions. [2021-10-24 10:52:57,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-24 10:52:57,003 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-10-24 10:52:57,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:52:57,004 INFO L225 Difference]: With dead ends: 20 [2021-10-24 10:52:57,004 INFO L226 Difference]: Without dead ends: 20 [2021-10-24 10:52:57,005 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 46 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 229.6ms TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2021-10-24 10:52:57,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2021-10-24 10:52:57,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2021-10-24 10:52:57,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 18 states have (on average 1.2777777777777777) internal successors, (23), 19 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:52:57,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 23 transitions. [2021-10-24 10:52:57,008 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 23 transitions. Word has length 10 [2021-10-24 10:52:57,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:52:57,008 INFO L470 AbstractCegarLoop]: Abstraction has 20 states and 23 transitions. [2021-10-24 10:52:57,009 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:52:57,009 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2021-10-24 10:52:57,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-24 10:52:57,009 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:52:57,009 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1] [2021-10-24 10:52:57,049 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_116f5fb9-7860-4ad3-a0cb-b3074e3ad0f3/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-10-24 10:52:57,211 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_116f5fb9-7860-4ad3-a0cb-b3074e3ad0f3/bin/utaipan-9zjyvhn0QE/cvc4 --incremental --print-success --lang smt (9)] Forceful destruction successful, exit code 0 [2021-10-24 10:52:57,417 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_116f5fb9-7860-4ad3-a0cb-b3074e3ad0f3/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (8)] Ended with exit code 0 [2021-10-24 10:52:57,610 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_116f5fb9-7860-4ad3-a0cb-b3074e3ad0f3/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_116f5fb9-7860-4ad3-a0cb-b3074e3ad0f3/bin/utaipan-9zjyvhn0QE/cvc4 --incremental --print-success --lang smt,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_116f5fb9-7860-4ad3-a0cb-b3074e3ad0f3/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 10:52:57,610 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-24 10:52:57,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:52:57,611 INFO L82 PathProgramCache]: Analyzing trace with hash -806217498, now seen corresponding path program 1 times [2021-10-24 10:52:57,611 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 10:52:57,612 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1064809019] [2021-10-24 10:52:57,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:52:57,612 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 10:52:57,612 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_116f5fb9-7860-4ad3-a0cb-b3074e3ad0f3/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 10:52:57,613 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_116f5fb9-7860-4ad3-a0cb-b3074e3ad0f3/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 10:52:57,624 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_116f5fb9-7860-4ad3-a0cb-b3074e3ad0f3/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-10-24 10:52:57,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-24 10:52:57,751 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-24 10:52:57,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-24 10:52:57,824 INFO L133 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2021-10-24 10:52:57,824 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-24 10:52:57,825 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1REQUIRES_VIOLATION [2021-10-24 10:52:57,827 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATION [2021-10-24 10:52:57,827 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK [2021-10-24 10:52:57,867 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_116f5fb9-7860-4ad3-a0cb-b3074e3ad0f3/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-10-24 10:52:58,028 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_116f5fb9-7860-4ad3-a0cb-b3074e3ad0f3/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 10:52:58,034 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-24 10:52:58,051 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 10:52:58 BoogieIcfgContainer [2021-10-24 10:52:58,051 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-24 10:52:58,052 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-24 10:52:58,052 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-24 10:52:58,052 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-24 10:52:58,052 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:52:52" (3/4) ... [2021-10-24 10:52:58,054 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-24 10:52:58,111 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_116f5fb9-7860-4ad3-a0cb-b3074e3ad0f3/bin/utaipan-9zjyvhn0QE/witness.graphml [2021-10-24 10:52:58,112 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-24 10:52:58,113 INFO L168 Benchmark]: Toolchain (without parser) took 6812.45 ms. Allocated memory was 62.9 MB in the beginning and 90.2 MB in the end (delta: 27.3 MB). Free memory was 42.3 MB in the beginning and 70.8 MB in the end (delta: -28.5 MB). Peak memory consumption was 43.9 MB. Max. memory is 16.1 GB. [2021-10-24 10:52:58,115 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 62.9 MB. Free memory is still 42.9 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-24 10:52:58,116 INFO L168 Benchmark]: CACSL2BoogieTranslator took 321.80 ms. Allocated memory is still 62.9 MB. Free memory was 42.1 MB in the beginning and 46.3 MB in the end (delta: -4.2 MB). Peak memory consumption was 13.8 MB. Max. memory is 16.1 GB. [2021-10-24 10:52:58,116 INFO L168 Benchmark]: Boogie Procedure Inliner took 70.69 ms. Allocated memory is still 62.9 MB. Free memory was 46.1 MB in the beginning and 44.7 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-24 10:52:58,117 INFO L168 Benchmark]: Boogie Preprocessor took 56.81 ms. Allocated memory is still 62.9 MB. Free memory was 44.7 MB in the beginning and 43.5 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-24 10:52:58,118 INFO L168 Benchmark]: RCFGBuilder took 371.31 ms. Allocated memory is still 62.9 MB. Free memory was 43.5 MB in the beginning and 34.0 MB in the end (delta: 9.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-24 10:52:58,118 INFO L168 Benchmark]: TraceAbstraction took 5921.33 ms. Allocated memory was 62.9 MB in the beginning and 90.2 MB in the end (delta: 27.3 MB). Free memory was 33.4 MB in the beginning and 27.8 MB in the end (delta: 5.6 MB). Peak memory consumption was 34.3 MB. Max. memory is 16.1 GB. [2021-10-24 10:52:58,119 INFO L168 Benchmark]: Witness Printer took 59.94 ms. Allocated memory is still 90.2 MB. Free memory was 27.8 MB in the beginning and 70.8 MB in the end (delta: -43.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-24 10:52:58,121 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 62.9 MB. Free memory is still 42.9 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 321.80 ms. Allocated memory is still 62.9 MB. Free memory was 42.1 MB in the beginning and 46.3 MB in the end (delta: -4.2 MB). Peak memory consumption was 13.8 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 70.69 ms. Allocated memory is still 62.9 MB. Free memory was 46.1 MB in the beginning and 44.7 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 56.81 ms. Allocated memory is still 62.9 MB. Free memory was 44.7 MB in the beginning and 43.5 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 371.31 ms. Allocated memory is still 62.9 MB. Free memory was 43.5 MB in the beginning and 34.0 MB in the end (delta: 9.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 5921.33 ms. Allocated memory was 62.9 MB in the beginning and 90.2 MB in the end (delta: 27.3 MB). Free memory was 33.4 MB in the beginning and 27.8 MB in the end (delta: 5.6 MB). Peak memory consumption was 34.3 MB. Max. memory is 16.1 GB. * Witness Printer took 59.94 ms. Allocated memory is still 90.2 MB. Free memory was 27.8 MB in the beginning and 70.8 MB in the end (delta: -43.0 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: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 4]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L13] char numbers[] = {0,1,2,3,4,5,6,7,8,9}; [L2] int i = 0; [L3] COND TRUE i < 10 [L4] EXPR numbers[i] [L4] COND FALSE !(numbers[i] <= 0) [L7] i++ [L3] COND TRUE i < 10 [L4] EXPR numbers[i] [L4] COND FALSE !(numbers[i] <= 0) [L7] i++ [L3] COND TRUE i < 10 [L4] numbers[i] - UnprovableResult [Line: 4]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 12]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 13 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 5818.3ms, OverallIterations: 6, TraceHistogramMax: 3, EmptinessCheckTime: 14.7ms, AutomataDifference: 550.9ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 11.5ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 40 SDtfs, 50 SDslu, 69 SDs, 0 SdLazy, 99 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 295.2ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 131 GetRequests, 107 SyntacticMatches, 2 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 462.0ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=20occurred in iteration=4, InterpolantAutomatonStates: 23, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 28.9ms AutomataMinimizationTime, 5 MinimizatonAttempts, 17 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 63.6ms SsaConstructionTime, 307.3ms SatisfiabilityAnalysisTime, 2016.1ms InterpolantComputationTime, 82 NumberOfCodeBlocks, 82 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 126 ConstructedInterpolants, 4 QuantifiedInterpolants, 1316 SizeOfPredicates, 45 NumberOfNonLiveVariables, 370 ConjunctsInSsa, 60 ConjunctsInUnsatCore, 18 InterpolantComputations, 6 PerfectInterpolantSequences, 0/24 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! [2021-10-24 10:52:58,169 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_116f5fb9-7860-4ad3-a0cb-b3074e3ad0f3/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...