./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 b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13ceef00-2670-46cb-8ff1-e346f748ede8/bin/uautomizer-UnR33cPsHg/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13ceef00-2670-46cb-8ff1-e346f748ede8/bin/uautomizer-UnR33cPsHg/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13ceef00-2670-46cb-8ff1-e346f748ede8/bin/uautomizer-UnR33cPsHg/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13ceef00-2670-46cb-8ff1-e346f748ede8/bin/uautomizer-UnR33cPsHg/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety-ext3/naturalNumbers1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13ceef00-2670-46cb-8ff1-e346f748ede8/bin/uautomizer-UnR33cPsHg/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13ceef00-2670-46cb-8ff1-e346f748ede8/bin/uautomizer-UnR33cPsHg --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 Automizer --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_13ceef00-2670-46cb-8ff1-e346f748ede8/bin/uautomizer-UnR33cPsHg/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13ceef00-2670-46cb-8ff1-e346f748ede8/bin/uautomizer-UnR33cPsHg/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13ceef00-2670-46cb-8ff1-e346f748ede8/bin/uautomizer-UnR33cPsHg/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13ceef00-2670-46cb-8ff1-e346f748ede8/bin/uautomizer-UnR33cPsHg/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety-ext3/naturalNumbers1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13ceef00-2670-46cb-8ff1-e346f748ede8/bin/uautomizer-UnR33cPsHg/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13ceef00-2670-46cb-8ff1-e346f748ede8/bin/uautomizer-UnR33cPsHg --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 Automizer --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-b2eff8b [2021-10-28 09:03:55,072 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 09:03:55,075 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 09:03:55,108 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 09:03:55,108 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 09:03:55,110 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 09:03:55,112 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 09:03:55,115 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 09:03:55,118 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 09:03:55,119 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 09:03:55,121 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 09:03:55,123 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 09:03:55,124 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 09:03:55,126 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 09:03:55,128 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 09:03:55,130 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 09:03:55,132 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 09:03:55,134 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 09:03:55,137 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 09:03:55,140 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 09:03:55,143 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 09:03:55,145 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 09:03:55,147 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 09:03:55,148 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 09:03:55,152 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 09:03:55,153 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 09:03:55,154 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 09:03:55,155 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 09:03:55,156 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 09:03:55,157 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 09:03:55,158 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 09:03:55,159 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 09:03:55,160 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 09:03:55,161 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 09:03:55,163 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 09:03:55,163 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 09:03:55,164 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 09:03:55,165 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 09:03:55,165 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 09:03:55,166 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 09:03:55,167 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 09:03:55,170 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13ceef00-2670-46cb-8ff1-e346f748ede8/bin/uautomizer-UnR33cPsHg/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-10-28 09:03:55,198 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 09:03:55,199 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 09:03:55,199 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 09:03:55,200 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 09:03:55,201 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 09:03:55,202 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 09:03:55,202 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 09:03:55,203 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 09:03:55,203 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 09:03:55,203 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-28 09:03:55,204 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 09:03:55,204 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 09:03:55,204 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 09:03:55,205 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-28 09:03:55,205 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-28 09:03:55,205 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-28 09:03:55,206 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-28 09:03:55,206 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-28 09:03:55,206 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 09:03:55,207 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 09:03:55,207 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 09:03:55,207 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 09:03:55,208 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-28 09:03:55,208 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 09:03:55,209 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 09:03:55,209 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-28 09:03:55,209 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-28 09:03:55,210 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-28 09:03:55,210 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 09:03:55,210 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13ceef00-2670-46cb-8ff1-e346f748ede8/bin/uautomizer-UnR33cPsHg/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13ceef00-2670-46cb-8ff1-e346f748ede8/bin/uautomizer-UnR33cPsHg Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 68fe5d136456ecb82ea00426715bf936d3e38ca581ddd26cec97e5010ad5777c [2021-10-28 09:03:55,595 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 09:03:55,619 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 09:03:55,622 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 09:03:55,623 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 09:03:55,624 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 09:03:55,626 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13ceef00-2670-46cb-8ff1-e346f748ede8/bin/uautomizer-UnR33cPsHg/../../sv-benchmarks/c/memsafety-ext3/naturalNumbers1.c [2021-10-28 09:03:55,707 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13ceef00-2670-46cb-8ff1-e346f748ede8/bin/uautomizer-UnR33cPsHg/data/9012d4104/c6ed1c614d054ca9a4afbe997e86e3d9/FLAGc7a34784c [2021-10-28 09:03:56,281 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 09:03:56,282 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13ceef00-2670-46cb-8ff1-e346f748ede8/sv-benchmarks/c/memsafety-ext3/naturalNumbers1.c [2021-10-28 09:03:56,297 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13ceef00-2670-46cb-8ff1-e346f748ede8/bin/uautomizer-UnR33cPsHg/data/9012d4104/c6ed1c614d054ca9a4afbe997e86e3d9/FLAGc7a34784c [2021-10-28 09:03:56,620 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13ceef00-2670-46cb-8ff1-e346f748ede8/bin/uautomizer-UnR33cPsHg/data/9012d4104/c6ed1c614d054ca9a4afbe997e86e3d9 [2021-10-28 09:03:56,627 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 09:03:56,632 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-28 09:03:56,635 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 09:03:56,635 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 09:03:56,639 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 09:03:56,640 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:03:56" (1/1) ... [2021-10-28 09:03:56,642 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@47bc0493 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:03:56, skipping insertion in model container [2021-10-28 09:03:56,642 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:03:56" (1/1) ... [2021-10-28 09:03:56,651 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 09:03:56,664 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 09:03:56,863 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 09:03:56,876 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) [2021-10-28 09:03:56,877 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@203c5dc9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:03:56, skipping insertion in model container [2021-10-28 09:03:56,877 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 09:03:56,878 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.preprocessor [2021-10-28 09:03:56,881 INFO L168 Benchmark]: Toolchain (without parser) took 247.40 ms. Allocated memory is still 115.3 MB. Free memory was 76.3 MB in the beginning and 90.6 MB in the end (delta: -14.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-28 09:03:56,883 INFO L168 Benchmark]: CDTParser took 0.34 ms. Allocated memory is still 115.3 MB. Free memory was 92.5 MB in the beginning and 92.5 MB in the end (delta: 64.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 09:03:56,885 INFO L168 Benchmark]: CACSL2BoogieTranslator took 243.36 ms. Allocated memory is still 115.3 MB. Free memory was 76.1 MB in the beginning and 90.6 MB in the end (delta: -14.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-28 09:03:56,889 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34 ms. Allocated memory is still 115.3 MB. Free memory was 92.5 MB in the beginning and 92.5 MB in the end (delta: 64.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 243.36 ms. Allocated memory is still 115.3 MB. Free memory was 76.1 MB in the beginning and 90.6 MB in the end (delta: -14.5 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-b2eff8b [2021-10-28 09:03:59,748 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 09:03:59,751 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 09:03:59,804 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 09:03:59,805 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 09:03:59,811 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 09:03:59,814 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 09:03:59,827 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 09:03:59,831 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 09:03:59,838 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 09:03:59,840 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 09:03:59,843 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 09:03:59,844 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 09:03:59,847 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 09:03:59,850 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 09:03:59,856 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 09:03:59,859 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 09:03:59,860 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 09:03:59,863 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 09:03:59,884 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 09:03:59,887 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 09:03:59,889 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 09:03:59,893 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 09:03:59,895 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 09:03:59,905 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 09:03:59,906 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 09:03:59,906 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 09:03:59,909 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 09:03:59,910 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 09:03:59,911 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 09:03:59,912 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 09:03:59,913 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 09:03:59,915 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 09:03:59,917 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 09:03:59,918 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 09:03:59,919 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 09:03:59,920 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 09:03:59,921 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 09:03:59,921 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 09:03:59,923 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 09:03:59,924 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 09:03:59,930 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13ceef00-2670-46cb-8ff1-e346f748ede8/bin/uautomizer-UnR33cPsHg/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-10-28 09:03:59,980 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 09:03:59,982 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 09:03:59,983 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 09:03:59,983 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 09:03:59,986 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 09:03:59,986 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 09:03:59,987 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 09:03:59,987 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 09:03:59,987 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 09:03:59,988 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-28 09:03:59,989 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 09:03:59,989 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 09:03:59,990 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 09:03:59,990 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-28 09:03:59,990 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-28 09:03:59,991 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-28 09:03:59,991 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-28 09:03:59,991 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-28 09:03:59,992 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-28 09:03:59,992 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-28 09:03:59,992 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 09:03:59,993 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 09:03:59,993 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 09:03:59,993 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 09:03:59,994 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-28 09:03:59,994 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 09:03:59,995 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 09:03:59,995 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-28 09:03:59,995 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-10-28 09:03:59,996 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-28 09:03:59,996 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 09:03:59,996 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-28 09:03:59,997 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13ceef00-2670-46cb-8ff1-e346f748ede8/bin/uautomizer-UnR33cPsHg/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13ceef00-2670-46cb-8ff1-e346f748ede8/bin/uautomizer-UnR33cPsHg Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 68fe5d136456ecb82ea00426715bf936d3e38ca581ddd26cec97e5010ad5777c [2021-10-28 09:04:00,459 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 09:04:00,487 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 09:04:00,491 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 09:04:00,492 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 09:04:00,493 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 09:04:00,495 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13ceef00-2670-46cb-8ff1-e346f748ede8/bin/uautomizer-UnR33cPsHg/../../sv-benchmarks/c/memsafety-ext3/naturalNumbers1.c [2021-10-28 09:04:00,577 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13ceef00-2670-46cb-8ff1-e346f748ede8/bin/uautomizer-UnR33cPsHg/data/1ac39791c/2fa4a3de1a37497aa5159c1882de622f/FLAG83f83fc0f [2021-10-28 09:04:01,201 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 09:04:01,203 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13ceef00-2670-46cb-8ff1-e346f748ede8/sv-benchmarks/c/memsafety-ext3/naturalNumbers1.c [2021-10-28 09:04:01,210 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13ceef00-2670-46cb-8ff1-e346f748ede8/bin/uautomizer-UnR33cPsHg/data/1ac39791c/2fa4a3de1a37497aa5159c1882de622f/FLAG83f83fc0f [2021-10-28 09:04:01,561 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13ceef00-2670-46cb-8ff1-e346f748ede8/bin/uautomizer-UnR33cPsHg/data/1ac39791c/2fa4a3de1a37497aa5159c1882de622f [2021-10-28 09:04:01,565 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 09:04:01,568 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-28 09:04:01,574 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 09:04:01,574 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 09:04:01,579 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 09:04:01,580 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:04:01" (1/1) ... [2021-10-28 09:04:01,583 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1c254a3a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:04:01, skipping insertion in model container [2021-10-28 09:04:01,583 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:04:01" (1/1) ... [2021-10-28 09:04:01,593 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 09:04:01,609 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 09:04:01,846 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 09:04:01,880 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-10-28 09:04:01,882 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 09:04:01,898 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 09:04:01,910 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 09:04:02,005 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 09:04:02,031 INFO L208 MainTranslator]: Completed translation [2021-10-28 09:04:02,031 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:04:02 WrapperNode [2021-10-28 09:04:02,032 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 09:04:02,036 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 09:04:02,036 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 09:04:02,036 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 09:04:02,051 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:04:02" (1/1) ... [2021-10-28 09:04:02,052 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:04:02" (1/1) ... [2021-10-28 09:04:02,080 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:04:02" (1/1) ... [2021-10-28 09:04:02,080 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:04:02" (1/1) ... [2021-10-28 09:04:02,093 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:04:02" (1/1) ... [2021-10-28 09:04:02,110 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:04:02" (1/1) ... [2021-10-28 09:04:02,112 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:04:02" (1/1) ... [2021-10-28 09:04:02,117 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 09:04:02,118 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 09:04:02,118 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 09:04:02,118 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 09:04:02,119 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:04:02" (1/1) ... [2021-10-28 09:04:02,125 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 09:04:02,139 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13ceef00-2670-46cb-8ff1-e346f748ede8/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:04:02,152 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13ceef00-2670-46cb-8ff1-e346f748ede8/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-28 09:04:02,182 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13ceef00-2670-46cb-8ff1-e346f748ede8/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-28 09:04:02,217 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-10-28 09:04:02,219 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 09:04:02,219 INFO L138 BoogieDeclarations]: Found implementation of procedure areNatural [2021-10-28 09:04:02,219 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-10-28 09:04:02,219 INFO L130 BoogieDeclarations]: Found specification of procedure areNatural [2021-10-28 09:04:02,222 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-28 09:04:02,222 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-10-28 09:04:02,223 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-28 09:04:02,223 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-28 09:04:02,223 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-28 09:04:02,223 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-10-28 09:04:02,223 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 09:04:02,223 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-10-28 09:04:02,223 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-28 09:04:02,224 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-10-28 09:04:02,635 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 09:04:02,636 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-10-28 09:04:02,638 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:04:02 BoogieIcfgContainer [2021-10-28 09:04:02,638 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 09:04:02,646 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-28 09:04:02,646 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-28 09:04:02,649 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-28 09:04:02,650 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 09:04:01" (1/3) ... [2021-10-28 09:04:02,663 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49df2674 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 09:04:02, skipping insertion in model container [2021-10-28 09:04:02,664 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:04:02" (2/3) ... [2021-10-28 09:04:02,664 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49df2674 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 09:04:02, skipping insertion in model container [2021-10-28 09:04:02,664 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:04:02" (3/3) ... [2021-10-28 09:04:02,666 INFO L111 eAbstractionObserver]: Analyzing ICFG naturalNumbers1.c [2021-10-28 09:04:02,673 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-28 09:04:02,673 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-10-28 09:04:02,786 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-28 09:04:02,797 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 [2021-10-28 09:04:02,797 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-10-28 09:04:02,817 INFO L276 IsEmpty]: Start isEmpty. Operand has 22 states, 12 states have (on average 1.5) internal successors, (18), 15 states have internal predecessors, (18), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-10-28 09:04:02,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-28 09:04:02,834 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:04:02,835 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:04:02,836 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting areNaturalErr0REQUIRES_VIOLATION === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, areNaturalErr0REQUIRES_VIOLATION, areNaturalErr1REQUIRES_VIOLATION] === [2021-10-28 09:04:02,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:04:02,847 INFO L85 PathProgramCache]: Analyzing trace with hash -1845664052, now seen corresponding path program 1 times [2021-10-28 09:04:02,861 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 09:04:02,863 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [797371684] [2021-10-28 09:04:02,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:04:02,864 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 09:04:02,865 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13ceef00-2670-46cb-8ff1-e346f748ede8/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 09:04:02,871 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13ceef00-2670-46cb-8ff1-e346f748ede8/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 09:04:02,918 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13ceef00-2670-46cb-8ff1-e346f748ede8/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-28 09:04:03,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:04:03,015 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-28 09:04:03,021 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:04:03,140 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 [2021-10-28 09:04:03,247 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:04:03,248 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 09:04:03,365 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:04:03,366 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 09:04:03,367 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [797371684] [2021-10-28 09:04:03,369 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [797371684] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 09:04:03,369 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:04:03,369 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-10-28 09:04:03,372 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832103753] [2021-10-28 09:04:03,380 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-28 09:04:03,381 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 09:04:03,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 09:04:03,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-28 09:04:03,406 INFO L87 Difference]: Start difference. First operand has 22 states, 12 states have (on average 1.5) internal successors, (18), 15 states have internal predecessors, (18), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 5 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:04:03,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:04:03,527 INFO L93 Difference]: Finished difference Result 21 states and 22 transitions. [2021-10-28 09:04:03,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-28 09:04:03,529 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 10 [2021-10-28 09:04:03,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:04:03,538 INFO L225 Difference]: With dead ends: 21 [2021-10-28 09:04:03,539 INFO L226 Difference]: Without dead ends: 18 [2021-10-28 09:04:03,541 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-28 09:04:03,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2021-10-28 09:04:03,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2021-10-28 09:04:03,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 12 states have internal predecessors, (14), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-10-28 09:04:03,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2021-10-28 09:04:03,581 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 10 [2021-10-28 09:04:03,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:04:03,582 INFO L470 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2021-10-28 09:04:03,582 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:04:03,582 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2021-10-28 09:04:03,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-28 09:04:03,584 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:04:03,584 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:04:03,599 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13ceef00-2670-46cb-8ff1-e346f748ede8/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-10-28 09:04:03,797 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13ceef00-2670-46cb-8ff1-e346f748ede8/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 09:04:03,797 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting areNaturalErr1REQUIRES_VIOLATION === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, areNaturalErr0REQUIRES_VIOLATION, areNaturalErr1REQUIRES_VIOLATION] === [2021-10-28 09:04:03,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:04:03,798 INFO L85 PathProgramCache]: Analyzing trace with hash -1845664051, now seen corresponding path program 1 times [2021-10-28 09:04:03,799 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 09:04:03,799 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [119792814] [2021-10-28 09:04:03,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:04:03,800 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 09:04:03,800 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13ceef00-2670-46cb-8ff1-e346f748ede8/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 09:04:03,801 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13ceef00-2670-46cb-8ff1-e346f748ede8/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 09:04:03,806 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13ceef00-2670-46cb-8ff1-e346f748ede8/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-28 09:04:03,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:04:03,858 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-28 09:04:03,859 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:04:03,889 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 [2021-10-28 09:04:03,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:04:03,993 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 09:04:04,367 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:04:04,367 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 09:04:04,368 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [119792814] [2021-10-28 09:04:04,368 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [119792814] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 09:04:04,368 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:04:04,368 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-10-28 09:04:04,369 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758441103] [2021-10-28 09:04:04,370 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-28 09:04:04,372 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 09:04:04,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-28 09:04:04,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-10-28 09:04:04,377 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand has 8 states, 5 states have (on average 2.0) internal successors, (10), 6 states have internal predecessors, (10), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:04:04,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:04:04,795 INFO L93 Difference]: Finished difference Result 28 states and 31 transitions. [2021-10-28 09:04:04,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-28 09:04:04,797 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 5 states have (on average 2.0) internal successors, (10), 6 states have internal predecessors, (10), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 10 [2021-10-28 09:04:04,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:04:04,800 INFO L225 Difference]: With dead ends: 28 [2021-10-28 09:04:04,801 INFO L226 Difference]: Without dead ends: 28 [2021-10-28 09:04:04,801 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-10-28 09:04:04,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2021-10-28 09:04:04,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 23. [2021-10-28 09:04:04,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 16 states have (on average 1.3125) internal successors, (21), 17 states have internal predecessors, (21), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-10-28 09:04:04,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2021-10-28 09:04:04,811 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 10 [2021-10-28 09:04:04,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:04:04,815 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2021-10-28 09:04:04,815 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 5 states have (on average 2.0) internal successors, (10), 6 states have internal predecessors, (10), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:04:04,816 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2021-10-28 09:04:04,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-28 09:04:04,824 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:04:04,824 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:04:04,839 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13ceef00-2670-46cb-8ff1-e346f748ede8/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-28 09:04:05,030 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13ceef00-2670-46cb-8ff1-e346f748ede8/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 09:04:05,031 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr0ENSURES_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, areNaturalErr0REQUIRES_VIOLATION, areNaturalErr1REQUIRES_VIOLATION] === [2021-10-28 09:04:05,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:04:05,032 INFO L85 PathProgramCache]: Analyzing trace with hash -1907814666, now seen corresponding path program 1 times [2021-10-28 09:04:05,033 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 09:04:05,033 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1209090588] [2021-10-28 09:04:05,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:04:05,033 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 09:04:05,033 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13ceef00-2670-46cb-8ff1-e346f748ede8/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 09:04:05,034 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13ceef00-2670-46cb-8ff1-e346f748ede8/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 09:04:05,039 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13ceef00-2670-46cb-8ff1-e346f748ede8/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-28 09:04:05,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:04:05,122 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-28 09:04:05,124 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:04:05,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:04:05,471 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 09:04:06,046 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:04:06,047 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 09:04:06,047 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1209090588] [2021-10-28 09:04:06,047 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1209090588] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 09:04:06,048 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:04:06,048 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 6] imperfect sequences [] total 11 [2021-10-28 09:04:06,048 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541785478] [2021-10-28 09:04:06,049 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-28 09:04:06,049 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 09:04:06,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-28 09:04:06,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2021-10-28 09:04:06,051 INFO L87 Difference]: Start difference. First operand 23 states and 26 transitions. Second operand has 11 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 10 states have internal predecessors, (16), 3 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2021-10-28 09:04:06,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:04:06,378 INFO L93 Difference]: Finished difference Result 25 states and 27 transitions. [2021-10-28 09:04:06,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-28 09:04:06,382 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 10 states have internal predecessors, (16), 3 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Word has length 15 [2021-10-28 09:04:06,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:04:06,383 INFO L225 Difference]: With dead ends: 25 [2021-10-28 09:04:06,384 INFO L226 Difference]: Without dead ends: 23 [2021-10-28 09:04:06,384 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2021-10-28 09:04:06,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2021-10-28 09:04:06,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2021-10-28 09:04:06,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 16 states have (on average 1.25) internal successors, (20), 17 states have internal predecessors, (20), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-10-28 09:04:06,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 25 transitions. [2021-10-28 09:04:06,394 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 25 transitions. Word has length 15 [2021-10-28 09:04:06,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:04:06,394 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 25 transitions. [2021-10-28 09:04:06,394 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 10 states have internal predecessors, (16), 3 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2021-10-28 09:04:06,395 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 25 transitions. [2021-10-28 09:04:06,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-28 09:04:06,395 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:04:06,403 INFO L513 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:04:06,419 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13ceef00-2670-46cb-8ff1-e346f748ede8/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-28 09:04:06,615 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13ceef00-2670-46cb-8ff1-e346f748ede8/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 09:04:06,615 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting areNaturalErr1REQUIRES_VIOLATION === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, areNaturalErr0REQUIRES_VIOLATION, areNaturalErr1REQUIRES_VIOLATION] === [2021-10-28 09:04:06,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:04:06,616 INFO L85 PathProgramCache]: Analyzing trace with hash 1004346541, now seen corresponding path program 1 times [2021-10-28 09:04:06,616 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 09:04:06,617 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [863851697] [2021-10-28 09:04:06,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:04:06,617 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 09:04:06,618 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13ceef00-2670-46cb-8ff1-e346f748ede8/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 09:04:06,619 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13ceef00-2670-46cb-8ff1-e346f748ede8/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 09:04:06,654 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13ceef00-2670-46cb-8ff1-e346f748ede8/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-28 09:04:06,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:04:06,719 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:04:06,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:04:06,833 INFO L133 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2021-10-28 09:04:06,834 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-10-28 09:04:06,835 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location areNaturalErr1REQUIRES_VIOLATION [2021-10-28 09:04:06,837 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr0ENSURES_VIOLATIONMEMORY_LEAK [2021-10-28 09:04:06,838 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location areNaturalErr0REQUIRES_VIOLATION [2021-10-28 09:04:06,872 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13ceef00-2670-46cb-8ff1-e346f748ede8/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-28 09:04:07,038 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13ceef00-2670-46cb-8ff1-e346f748ede8/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 09:04:07,042 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2021-10-28 09:04:07,046 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-28 09:04:07,067 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 09:04:07 BoogieIcfgContainer [2021-10-28 09:04:07,067 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-28 09:04:07,068 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 09:04:07,068 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 09:04:07,068 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 09:04:07,069 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:04:02" (3/4) ... [2021-10-28 09:04:07,071 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-28 09:04:07,112 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13ceef00-2670-46cb-8ff1-e346f748ede8/bin/uautomizer-UnR33cPsHg/witness.graphml [2021-10-28 09:04:07,112 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 09:04:07,114 INFO L168 Benchmark]: Toolchain (without parser) took 5544.93 ms. Allocated memory was 58.7 MB in the beginning and 77.6 MB in the end (delta: 18.9 MB). Free memory was 36.5 MB in the beginning and 33.0 MB in the end (delta: 3.5 MB). Peak memory consumption was 22.3 MB. Max. memory is 16.1 GB. [2021-10-28 09:04:07,115 INFO L168 Benchmark]: CDTParser took 0.40 ms. Allocated memory is still 58.7 MB. Free memory is still 38.8 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 09:04:07,115 INFO L168 Benchmark]: CACSL2BoogieTranslator took 459.87 ms. Allocated memory is still 58.7 MB. Free memory was 36.4 MB in the beginning and 41.6 MB in the end (delta: -5.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-28 09:04:07,116 INFO L168 Benchmark]: Boogie Preprocessor took 81.27 ms. Allocated memory is still 58.7 MB. Free memory was 41.6 MB in the beginning and 39.8 MB in the end (delta: 1.8 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 09:04:07,116 INFO L168 Benchmark]: RCFGBuilder took 526.28 ms. Allocated memory is still 58.7 MB. Free memory was 39.8 MB in the beginning and 29.8 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-28 09:04:07,117 INFO L168 Benchmark]: TraceAbstraction took 4421.72 ms. Allocated memory was 58.7 MB in the beginning and 77.6 MB in the end (delta: 18.9 MB). Free memory was 29.2 MB in the beginning and 34.6 MB in the end (delta: -5.4 MB). Peak memory consumption was 15.1 MB. Max. memory is 16.1 GB. [2021-10-28 09:04:07,118 INFO L168 Benchmark]: Witness Printer took 44.53 ms. Allocated memory is still 77.6 MB. Free memory was 34.6 MB in the beginning and 33.0 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 09:04:07,120 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.40 ms. Allocated memory is still 58.7 MB. Free memory is still 38.8 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 459.87 ms. Allocated memory is still 58.7 MB. Free memory was 36.4 MB in the beginning and 41.6 MB in the end (delta: -5.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 81.27 ms. Allocated memory is still 58.7 MB. Free memory was 41.6 MB in the beginning and 39.8 MB in the end (delta: 1.8 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 526.28 ms. Allocated memory is still 58.7 MB. Free memory was 39.8 MB in the beginning and 29.8 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 4421.72 ms. Allocated memory was 58.7 MB in the beginning and 77.6 MB in the end (delta: 18.9 MB). Free memory was 29.2 MB in the beginning and 34.6 MB in the end (delta: -5.4 MB). Peak memory consumption was 15.1 MB. Max. memory is 16.1 GB. * Witness Printer took 44.53 ms. Allocated memory is still 77.6 MB. Free memory was 34.6 MB in the beginning and 33.0 MB in the end (delta: 1.6 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, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s 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}; VAL [numbers={3:0}] [L15] CALL areNatural((int*) numbers) VAL [numbers={3:0}] [L2] int i = 0; VAL [i=0, numbers={3:0}, numbers={3:0}] [L3] COND TRUE i < 10 VAL [i=0, numbers={3:0}, numbers={3:0}] [L4] EXPR numbers[i] VAL [i=0, numbers={3:0}, numbers={3:0}, numbers[i]=50462976] [L4] COND FALSE !(numbers[i] <= 0) [L7] i++ VAL [i=1, numbers={3:0}, numbers={3:0}] [L3] COND TRUE i < 10 VAL [i=1, numbers={3:0}, numbers={3:0}] [L4] EXPR numbers[i] VAL [i=1, numbers={3:0}, numbers={3:0}, numbers[i]=117835012] [L4] COND FALSE !(numbers[i] <= 0) [L7] i++ VAL [i=2, numbers={3:0}, numbers={3:0}] [L3] COND TRUE i < 10 VAL [i=2, numbers={3:0}, numbers={3:0}] [L4] numbers[i] - UnprovableResult [Line: 12]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 4]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 22 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 4.2s, OverallIterations: 4, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 41 SDtfs, 72 SDslu, 132 SDs, 0 SdLazy, 124 SolverSat, 12 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 72 GetRequests, 47 SyntacticMatches, 2 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=23occurred in iteration=2, InterpolantAutomatonStates: 18, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 5 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.7s InterpolantComputationTime, 51 NumberOfCodeBlocks, 51 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 64 ConstructedInterpolants, 6 QuantifiedInterpolants, 680 SizeOfPredicates, 10 NumberOfNonLiveVariables, 147 ConjunctsInSsa, 21 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2021-10-28 09:04:07,176 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13ceef00-2670-46cb-8ff1-e346f748ede8/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...