./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ldv-memsafety/memleaks_test9.i --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_cffdaccf-174f-4b17-942e-56893e273732/bin/utaipan-9zjyvhn0QE/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cffdaccf-174f-4b17-942e-56893e273732/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_cffdaccf-174f-4b17-942e-56893e273732/bin/utaipan-9zjyvhn0QE/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cffdaccf-174f-4b17-942e-56893e273732/bin/utaipan-9zjyvhn0QE/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test9.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cffdaccf-174f-4b17-942e-56893e273732/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_cffdaccf-174f-4b17-942e-56893e273732/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 d93866bdcd748cdf15837797eb67e5b49645998c33f9f4788420360893eea3e2 ............................................................................................................................................. 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_cffdaccf-174f-4b17-942e-56893e273732/bin/utaipan-9zjyvhn0QE/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cffdaccf-174f-4b17-942e-56893e273732/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_cffdaccf-174f-4b17-942e-56893e273732/bin/utaipan-9zjyvhn0QE/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cffdaccf-174f-4b17-942e-56893e273732/bin/utaipan-9zjyvhn0QE/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test9.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cffdaccf-174f-4b17-942e-56893e273732/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_cffdaccf-174f-4b17-942e-56893e273732/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 d93866bdcd748cdf15837797eb67e5b49645998c33f9f4788420360893eea3e2 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-e943c26 [2021-10-24 10:38:06,108 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-24 10:38:06,110 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-24 10:38:06,152 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-24 10:38:06,153 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-24 10:38:06,157 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-24 10:38:06,159 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-24 10:38:06,163 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-24 10:38:06,166 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-24 10:38:06,172 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-24 10:38:06,174 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-24 10:38:06,176 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-24 10:38:06,176 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-24 10:38:06,179 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-24 10:38:06,182 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-24 10:38:06,187 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-24 10:38:06,189 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-24 10:38:06,190 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-24 10:38:06,193 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-24 10:38:06,201 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-24 10:38:06,203 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-24 10:38:06,205 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-24 10:38:06,209 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-24 10:38:06,210 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-24 10:38:06,219 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-24 10:38:06,220 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-24 10:38:06,221 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-24 10:38:06,223 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-24 10:38:06,224 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-24 10:38:06,225 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-24 10:38:06,226 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-24 10:38:06,228 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-24 10:38:06,230 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-24 10:38:06,232 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-24 10:38:06,233 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-24 10:38:06,234 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-24 10:38:06,235 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-24 10:38:06,235 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-24 10:38:06,236 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-24 10:38:06,237 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-24 10:38:06,238 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-24 10:38:06,239 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cffdaccf-174f-4b17-942e-56893e273732/bin/utaipan-9zjyvhn0QE/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2021-10-24 10:38:06,290 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-24 10:38:06,291 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-24 10:38:06,292 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-24 10:38:06,299 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-24 10:38:06,299 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-24 10:38:06,299 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-24 10:38:06,300 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-24 10:38:06,300 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-24 10:38:06,300 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-24 10:38:06,300 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-24 10:38:06,301 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-24 10:38:06,302 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-24 10:38:06,302 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-24 10:38:06,302 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-24 10:38:06,302 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-24 10:38:06,303 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-24 10:38:06,303 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-24 10:38:06,304 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-24 10:38:06,304 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-24 10:38:06,304 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-24 10:38:06,304 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-24 10:38:06,305 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-24 10:38:06,305 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-24 10:38:06,305 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-24 10:38:06,305 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-24 10:38:06,306 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-24 10:38:06,306 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-24 10:38:06,306 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-24 10:38:06,306 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-24 10:38:06,307 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-24 10:38:06,307 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-24 10:38:06,307 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-24 10:38:06,308 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-24 10:38:06,308 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-24 10:38:06,308 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-24 10:38:06,308 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-24 10:38:06,309 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-24 10:38:06,309 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-24 10:38:06,309 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-24 10:38:06,309 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_cffdaccf-174f-4b17-942e-56893e273732/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cffdaccf-174f-4b17-942e-56893e273732/bin/utaipan-9zjyvhn0QE Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d93866bdcd748cdf15837797eb67e5b49645998c33f9f4788420360893eea3e2 [2021-10-24 10:38:06,635 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-24 10:38:06,673 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-24 10:38:06,675 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-24 10:38:06,677 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-24 10:38:06,678 INFO L275 PluginConnector]: CDTParser initialized [2021-10-24 10:38:06,678 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cffdaccf-174f-4b17-942e-56893e273732/bin/utaipan-9zjyvhn0QE/../../sv-benchmarks/c/ldv-memsafety/memleaks_test9.i [2021-10-24 10:38:06,743 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cffdaccf-174f-4b17-942e-56893e273732/bin/utaipan-9zjyvhn0QE/data/9ac538455/274fe83f4a9847448fea230480556aa3/FLAG04fe320df [2021-10-24 10:38:07,347 INFO L306 CDTParser]: Found 1 translation units. [2021-10-24 10:38:07,350 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cffdaccf-174f-4b17-942e-56893e273732/sv-benchmarks/c/ldv-memsafety/memleaks_test9.i [2021-10-24 10:38:07,372 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cffdaccf-174f-4b17-942e-56893e273732/bin/utaipan-9zjyvhn0QE/data/9ac538455/274fe83f4a9847448fea230480556aa3/FLAG04fe320df [2021-10-24 10:38:07,633 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cffdaccf-174f-4b17-942e-56893e273732/bin/utaipan-9zjyvhn0QE/data/9ac538455/274fe83f4a9847448fea230480556aa3 [2021-10-24 10:38:07,635 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-24 10:38:07,637 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-24 10:38:07,638 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-24 10:38:07,638 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-24 10:38:07,654 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-24 10:38:07,655 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 10:38:07" (1/1) ... [2021-10-24 10:38:07,657 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26ee1cf2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:38:07, skipping insertion in model container [2021-10-24 10:38:07,657 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 10:38:07" (1/1) ... [2021-10-24 10:38:07,664 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-24 10:38:07,722 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-24 10:38:08,160 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-24 10:38:08,184 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 10:38:08,185 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@61f74d0b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:38:08, skipping insertion in model container [2021-10-24 10:38:08,185 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-24 10:38:08,186 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-10-24 10:38:08,189 INFO L168 Benchmark]: Toolchain (without parser) took 550.20 ms. Allocated memory was 90.2 MB in the beginning and 109.1 MB in the end (delta: 18.9 MB). Free memory was 50.6 MB in the beginning and 81.8 MB in the end (delta: -31.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-24 10:38:08,191 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 90.2 MB. Free memory is still 69.1 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-24 10:38:08,193 INFO L168 Benchmark]: CACSL2BoogieTranslator took 547.85 ms. Allocated memory was 90.2 MB in the beginning and 109.1 MB in the end (delta: 18.9 MB). Free memory was 50.4 MB in the beginning and 81.8 MB in the end (delta: -31.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-24 10:38:08,196 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 90.2 MB. Free memory is still 69.1 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 547.85 ms. Allocated memory was 90.2 MB in the beginning and 109.1 MB in the end (delta: 18.9 MB). Free memory was 50.4 MB in the beginning and 81.8 MB in the end (delta: -31.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 576]: 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 10:38:10,539 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-24 10:38:10,542 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-24 10:38:10,600 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-24 10:38:10,600 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-24 10:38:10,605 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-24 10:38:10,607 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-24 10:38:10,612 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-24 10:38:10,615 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-24 10:38:10,623 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-24 10:38:10,625 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-24 10:38:10,627 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-24 10:38:10,628 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-24 10:38:10,630 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-24 10:38:10,633 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-24 10:38:10,637 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-24 10:38:10,639 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-24 10:38:10,640 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-24 10:38:10,642 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-24 10:38:10,650 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-24 10:38:10,652 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-24 10:38:10,654 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-24 10:38:10,657 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-24 10:38:10,660 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-24 10:38:10,670 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-24 10:38:10,671 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-24 10:38:10,671 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-24 10:38:10,674 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-24 10:38:10,675 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-24 10:38:10,676 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-24 10:38:10,677 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-24 10:38:10,678 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-24 10:38:10,680 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-24 10:38:10,681 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-24 10:38:10,683 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-24 10:38:10,683 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-24 10:38:10,684 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-24 10:38:10,684 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-24 10:38:10,685 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-24 10:38:10,687 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-24 10:38:10,688 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-24 10:38:10,693 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cffdaccf-174f-4b17-942e-56893e273732/bin/utaipan-9zjyvhn0QE/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2021-10-24 10:38:10,738 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-24 10:38:10,738 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-24 10:38:10,740 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-24 10:38:10,740 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-24 10:38:10,740 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-24 10:38:10,741 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-24 10:38:10,741 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-24 10:38:10,741 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-24 10:38:10,741 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-24 10:38:10,743 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-24 10:38:10,744 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-24 10:38:10,744 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-24 10:38:10,745 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-24 10:38:10,745 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-24 10:38:10,745 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-24 10:38:10,745 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-24 10:38:10,745 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-24 10:38:10,746 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-24 10:38:10,746 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-24 10:38:10,746 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-24 10:38:10,746 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-24 10:38:10,747 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-24 10:38:10,747 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-24 10:38:10,747 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-24 10:38:10,747 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-24 10:38:10,748 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-24 10:38:10,748 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-24 10:38:10,748 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-24 10:38:10,748 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-24 10:38:10,749 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-24 10:38:10,749 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-24 10:38:10,749 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-24 10:38:10,750 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-24 10:38:10,750 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-24 10:38:10,750 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-24 10:38:10,751 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-24 10:38:10,751 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_cffdaccf-174f-4b17-942e-56893e273732/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cffdaccf-174f-4b17-942e-56893e273732/bin/utaipan-9zjyvhn0QE Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d93866bdcd748cdf15837797eb67e5b49645998c33f9f4788420360893eea3e2 [2021-10-24 10:38:11,153 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-24 10:38:11,188 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-24 10:38:11,191 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-24 10:38:11,193 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-24 10:38:11,194 INFO L275 PluginConnector]: CDTParser initialized [2021-10-24 10:38:11,195 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cffdaccf-174f-4b17-942e-56893e273732/bin/utaipan-9zjyvhn0QE/../../sv-benchmarks/c/ldv-memsafety/memleaks_test9.i [2021-10-24 10:38:11,272 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cffdaccf-174f-4b17-942e-56893e273732/bin/utaipan-9zjyvhn0QE/data/286a81897/02f147f50d3f4a858dc2139e1d4c7d68/FLAG899277277 [2021-10-24 10:38:11,975 INFO L306 CDTParser]: Found 1 translation units. [2021-10-24 10:38:11,976 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cffdaccf-174f-4b17-942e-56893e273732/sv-benchmarks/c/ldv-memsafety/memleaks_test9.i [2021-10-24 10:38:12,001 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cffdaccf-174f-4b17-942e-56893e273732/bin/utaipan-9zjyvhn0QE/data/286a81897/02f147f50d3f4a858dc2139e1d4c7d68/FLAG899277277 [2021-10-24 10:38:12,190 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cffdaccf-174f-4b17-942e-56893e273732/bin/utaipan-9zjyvhn0QE/data/286a81897/02f147f50d3f4a858dc2139e1d4c7d68 [2021-10-24 10:38:12,193 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-24 10:38:12,194 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-24 10:38:12,196 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-24 10:38:12,197 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-24 10:38:12,201 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-24 10:38:12,201 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 10:38:12" (1/1) ... [2021-10-24 10:38:12,203 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@722493a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:38:12, skipping insertion in model container [2021-10-24 10:38:12,203 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 10:38:12" (1/1) ... [2021-10-24 10:38:12,213 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-24 10:38:12,288 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-24 10:38:12,751 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-24 10:38:12,770 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-10-24 10:38:12,779 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-24 10:38:12,846 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-24 10:38:12,867 INFO L203 MainTranslator]: Completed pre-run [2021-10-24 10:38:12,963 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-24 10:38:13,039 INFO L208 MainTranslator]: Completed translation [2021-10-24 10:38:13,040 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:38:13 WrapperNode [2021-10-24 10:38:13,040 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-24 10:38:13,041 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-24 10:38:13,041 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-24 10:38:13,041 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-24 10:38:13,048 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:38:13" (1/1) ... [2021-10-24 10:38:13,079 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:38:13" (1/1) ... [2021-10-24 10:38:13,121 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-24 10:38:13,122 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-24 10:38:13,122 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-24 10:38:13,122 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-24 10:38:13,131 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:38:13" (1/1) ... [2021-10-24 10:38:13,132 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:38:13" (1/1) ... [2021-10-24 10:38:13,154 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:38:13" (1/1) ... [2021-10-24 10:38:13,155 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:38:13" (1/1) ... [2021-10-24 10:38:13,161 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:38:13" (1/1) ... [2021-10-24 10:38:13,170 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:38:13" (1/1) ... [2021-10-24 10:38:13,172 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:38:13" (1/1) ... [2021-10-24 10:38:13,188 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-24 10:38:13,189 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-24 10:38:13,190 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-24 10:38:13,190 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-24 10:38:13,191 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:38:13" (1/1) ... [2021-10-24 10:38:13,197 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-24 10:38:13,214 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cffdaccf-174f-4b17-942e-56893e273732/bin/utaipan-9zjyvhn0QE/z3 [2021-10-24 10:38:13,228 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cffdaccf-174f-4b17-942e-56893e273732/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-24 10:38:13,254 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cffdaccf-174f-4b17-942e-56893e273732/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-24 10:38:13,282 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-24 10:38:13,282 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-24 10:38:13,282 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-24 10:38:13,282 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-10-24 10:38:13,282 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-24 10:38:13,283 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-24 10:38:13,585 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-24 10:38:13,585 INFO L299 CfgBuilder]: Removed 12 assume(true) statements. [2021-10-24 10:38:13,587 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:38:13 BoogieIcfgContainer [2021-10-24 10:38:13,588 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-24 10:38:13,590 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-24 10:38:13,590 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-24 10:38:13,593 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-24 10:38:13,594 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 10:38:12" (1/3) ... [2021-10-24 10:38:13,595 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1cd1c72d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 10:38:13, skipping insertion in model container [2021-10-24 10:38:13,595 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:38:13" (2/3) ... [2021-10-24 10:38:13,596 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1cd1c72d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 10:38:13, skipping insertion in model container [2021-10-24 10:38:13,596 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:38:13" (3/3) ... [2021-10-24 10:38:13,598 INFO L111 eAbstractionObserver]: Analyzing ICFG memleaks_test9.i [2021-10-24 10:38:13,605 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-24 10:38:13,605 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2021-10-24 10:38:13,680 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-24 10:38:13,687 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 10:38:13,688 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-10-24 10:38:13,704 INFO L276 IsEmpty]: Start isEmpty. Operand has 18 states, 13 states have (on average 1.5384615384615385) internal successors, (20), 17 states have internal predecessors, (20), 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 10:38:13,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-24 10:38:13,711 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:38:13,712 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 10:38:13,713 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 1 more)] === [2021-10-24 10:38:13,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:38:13,721 INFO L82 PathProgramCache]: Analyzing trace with hash 119383820, now seen corresponding path program 1 times [2021-10-24 10:38:13,735 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 10:38:13,736 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1171904207] [2021-10-24 10:38:13,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:38:13,737 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 10:38:13,738 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cffdaccf-174f-4b17-942e-56893e273732/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 10:38:13,742 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cffdaccf-174f-4b17-942e-56893e273732/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 10:38:13,747 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cffdaccf-174f-4b17-942e-56893e273732/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-24 10:38:13,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:38:13,838 INFO L263 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-24 10:38:13,843 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 10:38:13,932 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 10:38:13,933 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 10:38:13,967 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 10:38:13,968 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 10:38:13,968 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1171904207] [2021-10-24 10:38:13,969 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1171904207] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 10:38:13,969 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 10:38:13,970 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-24 10:38:13,971 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104299830] [2021-10-24 10:38:13,976 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-24 10:38:13,977 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-24 10:38:13,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-24 10:38:13,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-24 10:38:13,993 INFO L87 Difference]: Start difference. First operand has 18 states, 13 states have (on average 1.5384615384615385) internal successors, (20), 17 states have internal predecessors, (20), 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 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:38:14,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:38:14,034 INFO L93 Difference]: Finished difference Result 17 states and 19 transitions. [2021-10-24 10:38:14,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-24 10:38:14,036 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-10-24 10:38:14,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:38:14,044 INFO L225 Difference]: With dead ends: 17 [2021-10-24 10:38:14,045 INFO L226 Difference]: Without dead ends: 15 [2021-10-24 10:38:14,046 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 17.4ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-24 10:38:14,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2021-10-24 10:38:14,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2021-10-24 10:38:14,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 12 states have (on average 1.4166666666666667) 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 10:38:14,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions. [2021-10-24 10:38:14,076 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 17 transitions. Word has length 8 [2021-10-24 10:38:14,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:38:14,077 INFO L470 AbstractCegarLoop]: Abstraction has 15 states and 17 transitions. [2021-10-24 10:38:14,077 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:38:14,077 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2021-10-24 10:38:14,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-24 10:38:14,078 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:38:14,078 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 10:38:14,094 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cffdaccf-174f-4b17-942e-56893e273732/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-24 10:38:14,289 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cffdaccf-174f-4b17-942e-56893e273732/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 10:38:14,290 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 1 more)] === [2021-10-24 10:38:14,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:38:14,291 INFO L82 PathProgramCache]: Analyzing trace with hash -594068823, now seen corresponding path program 1 times [2021-10-24 10:38:14,292 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 10:38:14,292 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [663525690] [2021-10-24 10:38:14,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:38:14,293 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 10:38:14,293 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cffdaccf-174f-4b17-942e-56893e273732/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 10:38:14,294 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cffdaccf-174f-4b17-942e-56893e273732/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 10:38:14,341 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cffdaccf-174f-4b17-942e-56893e273732/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-24 10:38:14,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:38:14,370 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-24 10:38:14,371 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 10:38:14,540 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:38:14,541 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 10:38:14,611 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 10:38:14,611 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 10:38:14,611 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [663525690] [2021-10-24 10:38:14,612 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [663525690] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 10:38:14,612 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 10:38:14,612 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 6 [2021-10-24 10:38:14,612 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975067235] [2021-10-24 10:38:14,614 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-24 10:38:14,614 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-24 10:38:14,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-24 10:38:14,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-24 10:38:14,619 INFO L87 Difference]: Start difference. First operand 15 states and 17 transitions. Second operand has 7 states, 6 states have (on average 3.0) internal successors, (18), 7 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 10:38:14,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:38:14,773 INFO L93 Difference]: Finished difference Result 25 states and 27 transitions. [2021-10-24 10:38:14,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-24 10:38:14,775 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.0) internal successors, (18), 7 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) Word has length 9 [2021-10-24 10:38:14,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:38:14,776 INFO L225 Difference]: With dead ends: 25 [2021-10-24 10:38:14,776 INFO L226 Difference]: Without dead ends: 25 [2021-10-24 10:38:14,777 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 139.2ms TimeCoverageRelationStatistics Valid=46, Invalid=64, Unknown=0, NotChecked=0, Total=110 [2021-10-24 10:38:14,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2021-10-24 10:38:14,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 16. [2021-10-24 10:38:14,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 15 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 10:38:14,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 18 transitions. [2021-10-24 10:38:14,781 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 18 transitions. Word has length 9 [2021-10-24 10:38:14,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:38:14,781 INFO L470 AbstractCegarLoop]: Abstraction has 16 states and 18 transitions. [2021-10-24 10:38:14,781 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.0) internal successors, (18), 7 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 10:38:14,781 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2021-10-24 10:38:14,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-24 10:38:14,785 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:38:14,789 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 10:38:14,811 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cffdaccf-174f-4b17-942e-56893e273732/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-24 10:38:15,000 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cffdaccf-174f-4b17-942e-56893e273732/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 10:38:15,000 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 1 more)] === [2021-10-24 10:38:15,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:38:15,001 INFO L82 PathProgramCache]: Analyzing trace with hash -594059884, now seen corresponding path program 1 times [2021-10-24 10:38:15,001 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 10:38:15,002 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [765091444] [2021-10-24 10:38:15,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:38:15,002 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 10:38:15,002 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cffdaccf-174f-4b17-942e-56893e273732/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 10:38:15,003 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cffdaccf-174f-4b17-942e-56893e273732/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 10:38:15,037 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cffdaccf-174f-4b17-942e-56893e273732/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-24 10:38:15,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:38:15,064 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-24 10:38:15,065 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 10:38:15,097 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 10:38:15,098 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 10:38:15,129 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 10:38:15,129 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 10:38:15,130 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [765091444] [2021-10-24 10:38:15,130 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [765091444] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 10:38:15,130 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 10:38:15,130 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-10-24 10:38:15,130 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128160487] [2021-10-24 10:38:15,131 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-24 10:38:15,131 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-24 10:38:15,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-24 10:38:15,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-24 10:38:15,132 INFO L87 Difference]: Start difference. First operand 16 states and 18 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:38:15,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:38:15,163 INFO L93 Difference]: Finished difference Result 28 states and 28 transitions. [2021-10-24 10:38:15,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-24 10:38:15,163 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-10-24 10:38:15,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:38:15,165 INFO L225 Difference]: With dead ends: 28 [2021-10-24 10:38:15,165 INFO L226 Difference]: Without dead ends: 28 [2021-10-24 10:38:15,166 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 13.7ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-24 10:38:15,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2021-10-24 10:38:15,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 18. [2021-10-24 10:38:15,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 16 states have (on average 1.25) internal successors, (20), 17 states have internal predecessors, (20), 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 10:38:15,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 20 transitions. [2021-10-24 10:38:15,171 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 20 transitions. Word has length 9 [2021-10-24 10:38:15,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:38:15,171 INFO L470 AbstractCegarLoop]: Abstraction has 18 states and 20 transitions. [2021-10-24 10:38:15,171 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:38:15,172 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 20 transitions. [2021-10-24 10:38:15,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-24 10:38:15,172 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:38:15,172 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 10:38:15,187 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cffdaccf-174f-4b17-942e-56893e273732/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-24 10:38:15,383 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cffdaccf-174f-4b17-942e-56893e273732/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 10:38:15,384 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 1 more)] === [2021-10-24 10:38:15,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:38:15,385 INFO L82 PathProgramCache]: Analyzing trace with hash 1182794520, now seen corresponding path program 1 times [2021-10-24 10:38:15,385 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 10:38:15,386 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1539166630] [2021-10-24 10:38:15,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:38:15,386 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 10:38:15,386 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cffdaccf-174f-4b17-942e-56893e273732/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 10:38:15,387 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cffdaccf-174f-4b17-942e-56893e273732/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 10:38:15,389 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cffdaccf-174f-4b17-942e-56893e273732/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-24 10:38:15,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:38:15,455 INFO L263 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-24 10:38:15,456 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 10:38:15,485 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 10:38:15,486 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 10:38:15,512 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 10:38:15,512 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 10:38:15,512 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1539166630] [2021-10-24 10:38:15,513 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1539166630] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 10:38:15,513 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 10:38:15,513 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-24 10:38:15,513 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742174752] [2021-10-24 10:38:15,514 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-24 10:38:15,514 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-24 10:38:15,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-24 10:38:15,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-24 10:38:15,515 INFO L87 Difference]: Start difference. First operand 18 states and 20 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:38:15,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:38:15,536 INFO L93 Difference]: Finished difference Result 26 states and 27 transitions. [2021-10-24 10:38:15,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-24 10:38:15,538 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-10-24 10:38:15,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:38:15,540 INFO L225 Difference]: With dead ends: 26 [2021-10-24 10:38:15,540 INFO L226 Difference]: Without dead ends: 24 [2021-10-24 10:38:15,541 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.4ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-24 10:38:15,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2021-10-24 10:38:15,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 16. [2021-10-24 10:38:15,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 15 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 10:38:15,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 17 transitions. [2021-10-24 10:38:15,545 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 17 transitions. Word has length 9 [2021-10-24 10:38:15,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:38:15,546 INFO L470 AbstractCegarLoop]: Abstraction has 16 states and 17 transitions. [2021-10-24 10:38:15,547 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:38:15,547 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 17 transitions. [2021-10-24 10:38:15,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-24 10:38:15,548 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:38:15,548 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 10:38:15,562 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cffdaccf-174f-4b17-942e-56893e273732/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-24 10:38:15,762 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cffdaccf-174f-4b17-942e-56893e273732/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 10:38:15,762 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 1 more)] === [2021-10-24 10:38:15,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:38:15,763 INFO L82 PathProgramCache]: Analyzing trace with hash -1236264274, now seen corresponding path program 1 times [2021-10-24 10:38:15,763 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 10:38:15,763 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2011630379] [2021-10-24 10:38:15,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:38:15,764 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 10:38:15,764 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cffdaccf-174f-4b17-942e-56893e273732/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 10:38:15,765 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cffdaccf-174f-4b17-942e-56893e273732/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 10:38:15,767 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cffdaccf-174f-4b17-942e-56893e273732/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-24 10:38:15,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:38:15,856 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-24 10:38:15,857 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 10:38:15,896 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 10:38:15,955 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 10:38:15,955 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 10:38:16,023 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 10:38:16,023 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 10:38:16,024 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2011630379] [2021-10-24 10:38:16,024 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2011630379] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 10:38:16,027 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 10:38:16,027 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-24 10:38:16,027 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015151494] [2021-10-24 10:38:16,028 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-24 10:38:16,028 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-24 10:38:16,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-24 10:38:16,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-24 10:38:16,029 INFO L87 Difference]: Start difference. First operand 16 states and 17 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:38:16,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:38:16,088 INFO L93 Difference]: Finished difference Result 21 states and 22 transitions. [2021-10-24 10:38:16,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-24 10:38:16,088 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-10-24 10:38:16,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:38:16,089 INFO L225 Difference]: With dead ends: 21 [2021-10-24 10:38:16,089 INFO L226 Difference]: Without dead ends: 21 [2021-10-24 10:38:16,090 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 21.6ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-24 10:38:16,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2021-10-24 10:38:16,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2021-10-24 10:38:16,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 19 states have (on average 1.1578947368421053) internal successors, (22), 20 states have internal predecessors, (22), 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 10:38:16,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2021-10-24 10:38:16,093 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 10 [2021-10-24 10:38:16,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:38:16,094 INFO L470 AbstractCegarLoop]: Abstraction has 21 states and 22 transitions. [2021-10-24 10:38:16,094 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:38:16,094 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 22 transitions. [2021-10-24 10:38:16,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-24 10:38:16,095 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:38:16,095 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 10:38:16,113 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cffdaccf-174f-4b17-942e-56893e273732/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-10-24 10:38:16,306 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cffdaccf-174f-4b17-942e-56893e273732/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 10:38:16,307 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 1 more)] === [2021-10-24 10:38:16,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:38:16,307 INFO L82 PathProgramCache]: Analyzing trace with hash -2045610900, now seen corresponding path program 1 times [2021-10-24 10:38:16,308 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 10:38:16,308 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [938817383] [2021-10-24 10:38:16,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:38:16,308 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 10:38:16,308 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cffdaccf-174f-4b17-942e-56893e273732/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 10:38:16,310 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cffdaccf-174f-4b17-942e-56893e273732/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 10:38:16,312 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cffdaccf-174f-4b17-942e-56893e273732/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-24 10:38:16,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:38:16,375 INFO L263 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-24 10:38:16,376 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 10:38:16,436 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 10:38:16,436 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 10:38:16,478 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 10:38:16,478 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 10:38:16,478 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [938817383] [2021-10-24 10:38:16,479 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [938817383] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 10:38:16,479 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 10:38:16,479 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-10-24 10:38:16,479 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189534361] [2021-10-24 10:38:16,479 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-24 10:38:16,480 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-24 10:38:16,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-24 10:38:16,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-24 10:38:16,481 INFO L87 Difference]: Start difference. First operand 21 states and 22 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:38:16,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:38:16,521 INFO L93 Difference]: Finished difference Result 23 states and 22 transitions. [2021-10-24 10:38:16,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-24 10:38:16,522 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-10-24 10:38:16,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:38:16,525 INFO L225 Difference]: With dead ends: 23 [2021-10-24 10:38:16,525 INFO L226 Difference]: Without dead ends: 23 [2021-10-24 10:38:16,525 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 23.8ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-24 10:38:16,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2021-10-24 10:38:16,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 15. [2021-10-24 10:38:16,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.0714285714285714) internal successors, (15), 14 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 10:38:16,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2021-10-24 10:38:16,532 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 10 [2021-10-24 10:38:16,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:38:16,532 INFO L470 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2021-10-24 10:38:16,533 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:38:16,533 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2021-10-24 10:38:16,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-24 10:38:16,533 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:38:16,533 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 10:38:16,543 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cffdaccf-174f-4b17-942e-56893e273732/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-10-24 10:38:16,733 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cffdaccf-174f-4b17-942e-56893e273732/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 10:38:16,734 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 1 more)] === [2021-10-24 10:38:16,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:38:16,735 INFO L82 PathProgramCache]: Analyzing trace with hash 1655975602, now seen corresponding path program 1 times [2021-10-24 10:38:16,735 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 10:38:16,735 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1752493550] [2021-10-24 10:38:16,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:38:16,735 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 10:38:16,736 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cffdaccf-174f-4b17-942e-56893e273732/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 10:38:16,737 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cffdaccf-174f-4b17-942e-56893e273732/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 10:38:16,741 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cffdaccf-174f-4b17-942e-56893e273732/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-10-24 10:38:16,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:38:16,824 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-24 10:38:16,827 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 10:38:16,995 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 10:38:16,995 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 10:38:21,875 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:38:21,875 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 10:38:21,875 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1752493550] [2021-10-24 10:38:21,875 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1752493550] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 10:38:21,876 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 10:38:21,876 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-10-24 10:38:21,876 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880241610] [2021-10-24 10:38:21,876 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-24 10:38:21,877 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-24 10:38:21,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-24 10:38:21,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=50, Unknown=2, NotChecked=0, Total=72 [2021-10-24 10:38:21,878 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand has 9 states, 8 states have (on average 2.875) internal successors, (23), 9 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 10:38:22,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:38:22,082 INFO L93 Difference]: Finished difference Result 22 states and 21 transitions. [2021-10-24 10:38:22,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-24 10:38:22,083 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.875) internal successors, (23), 9 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) Word has length 12 [2021-10-24 10:38:22,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:38:22,084 INFO L225 Difference]: With dead ends: 22 [2021-10-24 10:38:22,084 INFO L226 Difference]: Without dead ends: 13 [2021-10-24 10:38:22,084 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 4910.7ms TimeCoverageRelationStatistics Valid=40, Invalid=90, Unknown=2, NotChecked=0, Total=132 [2021-10-24 10:38:22,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2021-10-24 10:38:22,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2021-10-24 10:38:22,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 12 states have (on average 1.0) internal successors, (12), 12 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:38:22,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 12 transitions. [2021-10-24 10:38:22,094 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 12 transitions. Word has length 12 [2021-10-24 10:38:22,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:38:22,094 INFO L470 AbstractCegarLoop]: Abstraction has 13 states and 12 transitions. [2021-10-24 10:38:22,095 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.875) internal successors, (23), 9 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 10:38:22,095 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 12 transitions. [2021-10-24 10:38:22,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-24 10:38:22,095 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:38:22,096 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 10:38:22,117 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cffdaccf-174f-4b17-942e-56893e273732/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-10-24 10:38:22,306 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cffdaccf-174f-4b17-942e-56893e273732/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 10:38:22,306 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 1 more)] === [2021-10-24 10:38:22,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:38:22,307 INFO L82 PathProgramCache]: Analyzing trace with hash 453601966, now seen corresponding path program 1 times [2021-10-24 10:38:22,307 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 10:38:22,307 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [354095726] [2021-10-24 10:38:22,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:38:22,308 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 10:38:22,308 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cffdaccf-174f-4b17-942e-56893e273732/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 10:38:22,325 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cffdaccf-174f-4b17-942e-56893e273732/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 10:38:22,326 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cffdaccf-174f-4b17-942e-56893e273732/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-10-24 10:38:22,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:38:22,414 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-24 10:38:22,415 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 10:38:22,455 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 10:38:22,455 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 10:38:22,504 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 10:38:22,504 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 10:38:22,505 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [354095726] [2021-10-24 10:38:22,505 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [354095726] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 10:38:22,505 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 10:38:22,505 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-10-24 10:38:22,506 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744266492] [2021-10-24 10:38:22,506 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-24 10:38:22,506 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-24 10:38:22,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-24 10:38:22,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-24 10:38:22,507 INFO L87 Difference]: Start difference. First operand 13 states and 12 transitions. Second operand has 6 states, 6 states have (on average 2.5) internal successors, (15), 6 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 10:38:22,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:38:22,521 INFO L93 Difference]: Finished difference Result 7 states and 6 transitions. [2021-10-24 10:38:22,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-24 10:38:22,521 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 6 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) Word has length 12 [2021-10-24 10:38:22,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:38:22,522 INFO L225 Difference]: With dead ends: 7 [2021-10-24 10:38:22,522 INFO L226 Difference]: Without dead ends: 0 [2021-10-24 10:38:22,522 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 28.5ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-24 10:38:22,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-24 10:38:22,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-24 10:38:22,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:38:22,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-24 10:38:22,523 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 12 [2021-10-24 10:38:22,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:38:22,524 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-24 10:38:22,524 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 6 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 10:38:22,524 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-24 10:38:22,524 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-24 10:38:22,527 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE [2021-10-24 10:38:22,528 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE [2021-10-24 10:38:22,528 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE [2021-10-24 10:38:22,528 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK [2021-10-24 10:38:22,544 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cffdaccf-174f-4b17-942e-56893e273732/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-10-24 10:38:22,744 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cffdaccf-174f-4b17-942e-56893e273732/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 10:38:22,748 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-24 10:38:22,751 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 10:38:22 BoogieIcfgContainer [2021-10-24 10:38:22,751 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-24 10:38:22,752 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-24 10:38:22,752 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-24 10:38:22,752 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-24 10:38:22,752 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:38:13" (3/4) ... [2021-10-24 10:38:22,755 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-24 10:38:22,768 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2021-10-24 10:38:22,768 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-10-24 10:38:22,768 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-24 10:38:22,817 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cffdaccf-174f-4b17-942e-56893e273732/bin/utaipan-9zjyvhn0QE/witness.graphml [2021-10-24 10:38:22,818 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-24 10:38:22,821 INFO L168 Benchmark]: Toolchain (without parser) took 10625.03 ms. Allocated memory was 56.6 MB in the beginning and 69.2 MB in the end (delta: 12.6 MB). Free memory was 33.2 MB in the beginning and 35.3 MB in the end (delta: -2.1 MB). Peak memory consumption was 11.2 MB. Max. memory is 16.1 GB. [2021-10-24 10:38:22,821 INFO L168 Benchmark]: CDTParser took 0.32 ms. Allocated memory is still 56.6 MB. Free memory was 37.9 MB in the beginning and 37.9 MB in the end (delta: 39.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-24 10:38:22,822 INFO L168 Benchmark]: CACSL2BoogieTranslator took 843.96 ms. Allocated memory was 56.6 MB in the beginning and 69.2 MB in the end (delta: 12.6 MB). Free memory was 33.0 MB in the beginning and 48.4 MB in the end (delta: -15.4 MB). Peak memory consumption was 16.7 MB. Max. memory is 16.1 GB. [2021-10-24 10:38:22,822 INFO L168 Benchmark]: Boogie Procedure Inliner took 80.49 ms. Allocated memory is still 69.2 MB. Free memory was 48.4 MB in the beginning and 46.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-24 10:38:22,823 INFO L168 Benchmark]: Boogie Preprocessor took 66.70 ms. Allocated memory is still 69.2 MB. Free memory was 46.3 MB in the beginning and 45.0 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-24 10:38:22,823 INFO L168 Benchmark]: RCFGBuilder took 398.52 ms. Allocated memory is still 69.2 MB. Free memory was 45.0 MB in the beginning and 34.7 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-24 10:38:22,824 INFO L168 Benchmark]: TraceAbstraction took 9161.46 ms. Allocated memory is still 69.2 MB. Free memory was 34.2 MB in the beginning and 37.8 MB in the end (delta: -3.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-24 10:38:22,824 INFO L168 Benchmark]: Witness Printer took 67.20 ms. Allocated memory is still 69.2 MB. Free memory was 37.8 MB in the beginning and 35.3 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-24 10:38:22,826 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32 ms. Allocated memory is still 56.6 MB. Free memory was 37.9 MB in the beginning and 37.9 MB in the end (delta: 39.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 843.96 ms. Allocated memory was 56.6 MB in the beginning and 69.2 MB in the end (delta: 12.6 MB). Free memory was 33.0 MB in the beginning and 48.4 MB in the end (delta: -15.4 MB). Peak memory consumption was 16.7 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 80.49 ms. Allocated memory is still 69.2 MB. Free memory was 48.4 MB in the beginning and 46.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 66.70 ms. Allocated memory is still 69.2 MB. Free memory was 46.3 MB in the beginning and 45.0 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 398.52 ms. Allocated memory is still 69.2 MB. Free memory was 45.0 MB in the beginning and 34.7 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 9161.46 ms. Allocated memory is still 69.2 MB. Free memory was 34.2 MB in the beginning and 37.8 MB in the end (delta: -3.6 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 67.20 ms. Allocated memory is still 69.2 MB. Free memory was 37.8 MB in the beginning and 35.3 MB in the end (delta: 2.5 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 - PositiveResult [Line: 766]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 766]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 766]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 775]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 18 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 9070.4ms, OverallIterations: 8, TraceHistogramMax: 1, EmptinessCheckTime: 19.5ms, AutomataDifference: 623.8ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 11.2ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 108 SDtfs, 146 SDslu, 115 SDs, 0 SdLazy, 147 SolverSat, 21 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 250.8ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 154 GetRequests, 116 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 5157.7ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=21occurred in iteration=5, InterpolantAutomatonStates: 38, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 48.3ms AutomataMinimizationTime, 8 MinimizatonAttempts, 35 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 60.8ms SsaConstructionTime, 128.4ms SatisfiabilityAnalysisTime, 5917.1ms InterpolantComputationTime, 79 NumberOfCodeBlocks, 79 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 142 ConstructedInterpolants, 3 QuantifiedInterpolants, 574 SizeOfPredicates, 10 NumberOfNonLiveVariables, 293 ConjunctsInSsa, 30 ConjunctsInUnsatCore, 16 InterpolantComputations, 16 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 - AllSpecificationsHoldResult: All specifications hold 4 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-10-24 10:38:22,847 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cffdaccf-174f-4b17-942e-56893e273732/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...