./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/list-ext3-properties/sll_shallow_copy-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3a4521a-68c1-44a0-af0d-3d91743ff39f/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3a4521a-68c1-44a0-af0d-3d91743ff39f/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3a4521a-68c1-44a0-af0d-3d91743ff39f/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3a4521a-68c1-44a0-af0d-3d91743ff39f/bin/utaipan-gh47qXpMRh/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/list-ext3-properties/sll_shallow_copy-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3a4521a-68c1-44a0-af0d-3d91743ff39f/bin/utaipan-gh47qXpMRh/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3a4521a-68c1-44a0-af0d-3d91743ff39f/bin/utaipan-gh47qXpMRh --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 6b0035e4df062aac8021cee981905a3c98f2d4e312e33b913ded157af60b9640 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-14 10:40:03,171 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 10:40:03,173 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 10:40:03,186 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 10:40:03,186 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 10:40:03,187 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 10:40:03,187 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 10:40:03,188 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 10:40:03,189 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 10:40:03,190 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 10:40:03,191 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 10:40:03,191 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 10:40:03,191 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 10:40:03,192 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 10:40:03,193 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 10:40:03,194 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 10:40:03,194 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 10:40:03,195 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 10:40:03,196 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 10:40:03,197 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 10:40:03,198 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 10:40:03,199 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 10:40:03,199 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 10:40:03,200 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 10:40:03,202 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 10:40:03,202 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 10:40:03,203 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 10:40:03,203 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 10:40:03,204 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 10:40:03,204 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 10:40:03,204 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 10:40:03,205 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 10:40:03,205 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 10:40:03,206 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 10:40:03,206 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 10:40:03,207 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 10:40:03,207 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 10:40:03,207 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 10:40:03,207 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 10:40:03,208 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 10:40:03,208 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 10:40:03,209 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3a4521a-68c1-44a0-af0d-3d91743ff39f/bin/utaipan-gh47qXpMRh/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2022-12-14 10:40:03,224 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 10:40:03,224 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 10:40:03,225 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 10:40:03,225 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 10:40:03,225 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 10:40:03,225 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 10:40:03,225 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 10:40:03,237 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 10:40:03,237 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 10:40:03,237 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 10:40:03,237 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 10:40:03,238 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 10:40:03,238 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 10:40:03,238 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 10:40:03,238 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 10:40:03,238 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 10:40:03,238 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 10:40:03,238 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 10:40:03,239 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-14 10:40:03,239 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-14 10:40:03,239 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 10:40:03,239 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 10:40:03,239 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-14 10:40:03,240 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 10:40:03,240 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 10:40:03,240 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 10:40:03,240 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-12-14 10:40:03,240 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-12-14 10:40:03,240 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-12-14 10:40:03,240 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 10:40:03,240 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-12-14 10:40:03,241 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 10:40:03,241 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 10:40:03,241 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 10:40:03,241 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 10:40:03,241 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 10:40:03,241 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 10:40:03,241 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 10:40:03,241 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 10:40:03,241 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 10:40:03,242 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 10:40:03,242 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 10:40:03,242 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3a4521a-68c1-44a0-af0d-3d91743ff39f/bin/utaipan-gh47qXpMRh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3a4521a-68c1-44a0-af0d-3d91743ff39f/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6b0035e4df062aac8021cee981905a3c98f2d4e312e33b913ded157af60b9640 [2022-12-14 10:40:03,413 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 10:40:03,433 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 10:40:03,436 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 10:40:03,437 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 10:40:03,437 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 10:40:03,439 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3a4521a-68c1-44a0-af0d-3d91743ff39f/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/list-ext3-properties/sll_shallow_copy-2.i [2022-12-14 10:40:06,070 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 10:40:06,281 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 10:40:06,282 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3a4521a-68c1-44a0-af0d-3d91743ff39f/sv-benchmarks/c/list-ext3-properties/sll_shallow_copy-2.i [2022-12-14 10:40:06,291 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3a4521a-68c1-44a0-af0d-3d91743ff39f/bin/utaipan-gh47qXpMRh/data/2ebe5ed4b/7aed1875dc824fa8964bd0abc6fa0a41/FLAGdbf1cb24e [2022-12-14 10:40:06,631 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3a4521a-68c1-44a0-af0d-3d91743ff39f/bin/utaipan-gh47qXpMRh/data/2ebe5ed4b/7aed1875dc824fa8964bd0abc6fa0a41 [2022-12-14 10:40:06,634 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 10:40:06,635 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 10:40:06,637 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 10:40:06,637 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 10:40:06,642 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 10:40:06,643 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 10:40:06" (1/1) ... [2022-12-14 10:40:06,644 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ce1cb91 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:40:06, skipping insertion in model container [2022-12-14 10:40:06,644 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 10:40:06" (1/1) ... [2022-12-14 10:40:06,655 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 10:40:06,688 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 10:40:06,877 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 10:40:06,886 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2022-12-14 10:40:06,887 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@5f7c9ce4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:40:06, skipping insertion in model container [2022-12-14 10:40:06,887 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 10:40:06,887 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2022-12-14 10:40:06,889 INFO L158 Benchmark]: Toolchain (without parser) took 253.12ms. Allocated memory is still 163.6MB. Free memory was 128.5MB in the beginning and 117.8MB in the end (delta: 10.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-12-14 10:40:06,890 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 163.6MB. Free memory is still 131.7MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 10:40:06,890 INFO L158 Benchmark]: CACSL2BoogieTranslator took 250.35ms. Allocated memory is still 163.6MB. Free memory was 128.5MB in the beginning and 117.8MB in the end (delta: 10.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-12-14 10:40:06,891 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 163.6MB. Free memory is still 131.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 250.35ms. Allocated memory is still 163.6MB. Free memory was 128.5MB in the beginning and 117.8MB in the end (delta: 10.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 562]: Unsupported Syntax Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3a4521a-68c1-44a0-af0d-3d91743ff39f/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3a4521a-68c1-44a0-af0d-3d91743ff39f/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3a4521a-68c1-44a0-af0d-3d91743ff39f/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3a4521a-68c1-44a0-af0d-3d91743ff39f/bin/utaipan-gh47qXpMRh/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/list-ext3-properties/sll_shallow_copy-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3a4521a-68c1-44a0-af0d-3d91743ff39f/bin/utaipan-gh47qXpMRh/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3a4521a-68c1-44a0-af0d-3d91743ff39f/bin/utaipan-gh47qXpMRh --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 6b0035e4df062aac8021cee981905a3c98f2d4e312e33b913ded157af60b9640 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-14 10:40:08,153 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 10:40:08,155 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 10:40:08,172 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 10:40:08,173 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 10:40:08,174 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 10:40:08,175 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 10:40:08,176 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 10:40:08,178 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 10:40:08,179 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 10:40:08,179 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 10:40:08,180 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 10:40:08,181 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 10:40:08,182 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 10:40:08,183 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 10:40:08,184 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 10:40:08,184 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 10:40:08,185 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 10:40:08,187 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 10:40:08,189 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 10:40:08,190 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 10:40:08,191 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 10:40:08,192 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 10:40:08,193 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 10:40:08,196 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 10:40:08,197 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 10:40:08,197 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 10:40:08,198 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 10:40:08,198 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 10:40:08,199 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 10:40:08,199 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 10:40:08,200 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 10:40:08,201 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 10:40:08,201 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 10:40:08,207 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 10:40:08,207 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 10:40:08,208 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 10:40:08,208 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 10:40:08,209 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 10:40:08,209 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 10:40:08,210 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 10:40:08,211 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3a4521a-68c1-44a0-af0d-3d91743ff39f/bin/utaipan-gh47qXpMRh/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2022-12-14 10:40:08,234 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 10:40:08,234 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 10:40:08,235 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 10:40:08,235 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 10:40:08,235 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 10:40:08,236 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 10:40:08,236 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 10:40:08,236 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 10:40:08,236 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 10:40:08,236 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 10:40:08,237 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 10:40:08,237 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 10:40:08,237 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-14 10:40:08,238 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-14 10:40:08,238 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 10:40:08,238 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 10:40:08,238 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-14 10:40:08,238 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 10:40:08,239 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 10:40:08,239 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 10:40:08,239 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-12-14 10:40:08,239 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-12-14 10:40:08,239 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-12-14 10:40:08,239 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 10:40:08,240 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-12-14 10:40:08,240 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-12-14 10:40:08,240 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-12-14 10:40:08,240 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 10:40:08,240 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 10:40:08,241 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 10:40:08,241 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-14 10:40:08,241 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 10:40:08,241 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 10:40:08,241 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 10:40:08,242 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 10:40:08,242 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-12-14 10:40:08,242 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-12-14 10:40:08,242 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 10:40:08,242 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-14 10:40:08,242 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_e3a4521a-68c1-44a0-af0d-3d91743ff39f/bin/utaipan-gh47qXpMRh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3a4521a-68c1-44a0-af0d-3d91743ff39f/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6b0035e4df062aac8021cee981905a3c98f2d4e312e33b913ded157af60b9640 [2022-12-14 10:40:08,475 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 10:40:08,492 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 10:40:08,494 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 10:40:08,495 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 10:40:08,495 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 10:40:08,496 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3a4521a-68c1-44a0-af0d-3d91743ff39f/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/list-ext3-properties/sll_shallow_copy-2.i [2022-12-14 10:40:11,107 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 10:40:11,270 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 10:40:11,270 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3a4521a-68c1-44a0-af0d-3d91743ff39f/sv-benchmarks/c/list-ext3-properties/sll_shallow_copy-2.i [2022-12-14 10:40:11,279 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3a4521a-68c1-44a0-af0d-3d91743ff39f/bin/utaipan-gh47qXpMRh/data/27d30b156/20370f891caf46239abf965a547da3ab/FLAGdee2066eb [2022-12-14 10:40:11,290 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3a4521a-68c1-44a0-af0d-3d91743ff39f/bin/utaipan-gh47qXpMRh/data/27d30b156/20370f891caf46239abf965a547da3ab [2022-12-14 10:40:11,292 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 10:40:11,293 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 10:40:11,294 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 10:40:11,294 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 10:40:11,298 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 10:40:11,299 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 10:40:11" (1/1) ... [2022-12-14 10:40:11,300 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1cbb5f9d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:40:11, skipping insertion in model container [2022-12-14 10:40:11,300 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 10:40:11" (1/1) ... [2022-12-14 10:40:11,307 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 10:40:11,338 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 10:40:11,556 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 10:40:11,565 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-12-14 10:40:11,572 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 10:40:11,593 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 10:40:11,595 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 10:40:11,624 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 10:40:11,656 INFO L208 MainTranslator]: Completed translation [2022-12-14 10:40:11,657 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:40:11 WrapperNode [2022-12-14 10:40:11,657 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 10:40:11,658 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 10:40:11,658 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 10:40:11,658 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 10:40:11,665 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:40:11" (1/1) ... [2022-12-14 10:40:11,681 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:40:11" (1/1) ... [2022-12-14 10:40:11,695 INFO L138 Inliner]: procedures = 115, calls = 11, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 33 [2022-12-14 10:40:11,696 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 10:40:11,696 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 10:40:11,696 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 10:40:11,696 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 10:40:11,702 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:40:11" (1/1) ... [2022-12-14 10:40:11,702 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:40:11" (1/1) ... [2022-12-14 10:40:11,704 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:40:11" (1/1) ... [2022-12-14 10:40:11,704 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:40:11" (1/1) ... [2022-12-14 10:40:11,708 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:40:11" (1/1) ... [2022-12-14 10:40:11,709 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:40:11" (1/1) ... [2022-12-14 10:40:11,710 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:40:11" (1/1) ... [2022-12-14 10:40:11,711 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:40:11" (1/1) ... [2022-12-14 10:40:11,712 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 10:40:11,713 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 10:40:11,713 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 10:40:11,713 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 10:40:11,714 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:40:11" (1/1) ... [2022-12-14 10:40:11,718 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 10:40:11,726 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3a4521a-68c1-44a0-af0d-3d91743ff39f/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 10:40:11,734 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3a4521a-68c1-44a0-af0d-3d91743ff39f/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 10:40:11,736 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3a4521a-68c1-44a0-af0d-3d91743ff39f/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 10:40:11,763 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_node [2022-12-14 10:40:11,763 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_node [2022-12-14 10:40:11,763 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-14 10:40:11,763 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-12-14 10:40:11,764 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-12-14 10:40:11,764 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-14 10:40:11,764 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 10:40:11,764 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 10:40:11,854 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 10:40:11,857 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 10:40:12,008 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 10:40:12,012 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 10:40:12,012 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-14 10:40:12,014 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 10:40:12 BoogieIcfgContainer [2022-12-14 10:40:12,014 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 10:40:12,015 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 10:40:12,015 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 10:40:12,018 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 10:40:12,018 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 10:40:11" (1/3) ... [2022-12-14 10:40:12,018 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77295c5f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 10:40:12, skipping insertion in model container [2022-12-14 10:40:12,019 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:40:11" (2/3) ... [2022-12-14 10:40:12,019 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77295c5f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 10:40:12, skipping insertion in model container [2022-12-14 10:40:12,019 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 10:40:12" (3/3) ... [2022-12-14 10:40:12,020 INFO L112 eAbstractionObserver]: Analyzing ICFG sll_shallow_copy-2.i [2022-12-14 10:40:12,034 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 10:40:12,034 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2022-12-14 10:40:12,065 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 10:40:12,070 INFO L357 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@2329cc52, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 10:40:12,070 INFO L358 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2022-12-14 10:40:12,073 INFO L276 IsEmpty]: Start isEmpty. Operand has 35 states, 19 states have (on average 1.6842105263157894) internal successors, (32), 31 states have internal predecessors, (32), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-14 10:40:12,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-12-14 10:40:12,078 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:40:12,079 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:40:12,079 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-12-14 10:40:12,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:40:12,083 INFO L85 PathProgramCache]: Analyzing trace with hash -1794625018, now seen corresponding path program 1 times [2022-12-14 10:40:12,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 10:40:12,095 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [927234059] [2022-12-14 10:40:12,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:40:12,095 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 10:40:12,096 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3a4521a-68c1-44a0-af0d-3d91743ff39f/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 10:40:12,097 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3a4521a-68c1-44a0-af0d-3d91743ff39f/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 10:40:12,098 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3a4521a-68c1-44a0-af0d-3d91743ff39f/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-12-14 10:40:12,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:40:12,166 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 10 conjunts are in the unsatisfiable core [2022-12-14 10:40:12,171 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:40:12,234 INFO L350 Elim1Store]: Elim1 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 7 [2022-12-14 10:40:12,319 WARN L859 $PredicateComparison]: unable to prove that (exists ((|alloc_node_~temp~0#1.base| (_ BitVec 32))) (= (store |c_old(#valid)| |alloc_node_~temp~0#1.base| (_ bv1 1)) |c_#valid|)) is different from true [2022-12-14 10:40:12,354 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-12-14 10:40:12,354 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2022-12-14 10:40:12,371 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 4 not checked. [2022-12-14 10:40:12,372 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 10:40:12,552 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:40:12,553 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 10:40:12,553 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [927234059] [2022-12-14 10:40:12,554 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [927234059] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 10:40:12,554 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [95434658] [2022-12-14 10:40:12,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:40:12,554 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-12-14 10:40:12,554 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3a4521a-68c1-44a0-af0d-3d91743ff39f/bin/utaipan-gh47qXpMRh/cvc4 [2022-12-14 10:40:12,579 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3a4521a-68c1-44a0-af0d-3d91743ff39f/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-12-14 10:40:12,580 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3a4521a-68c1-44a0-af0d-3d91743ff39f/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (3)] Waiting until timeout for monitored process [2022-12-14 10:40:12,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:40:12,646 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 10 conjunts are in the unsatisfiable core [2022-12-14 10:40:12,647 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:40:12,651 INFO L350 Elim1Store]: Elim1 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 7 [2022-12-14 10:40:12,702 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-12-14 10:40:12,702 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2022-12-14 10:40:12,717 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 4 not checked. [2022-12-14 10:40:12,717 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 10:40:12,861 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:40:12,862 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [95434658] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 10:40:12,862 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1391976158] [2022-12-14 10:40:12,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:40:12,862 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 10:40:12,862 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3a4521a-68c1-44a0-af0d-3d91743ff39f/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 10:40:12,863 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3a4521a-68c1-44a0-af0d-3d91743ff39f/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 10:40:12,865 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3a4521a-68c1-44a0-af0d-3d91743ff39f/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-14 10:40:12,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:40:12,906 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 10 conjunts are in the unsatisfiable core [2022-12-14 10:40:12,908 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:40:12,913 INFO L350 Elim1Store]: Elim1 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 7 [2022-12-14 10:40:12,947 WARN L859 $PredicateComparison]: unable to prove that (exists ((|alloc_node_~temp~0#1.base| (_ BitVec 32))) (and (= (_ bv0 1) (select |c_old(#valid)| |alloc_node_~temp~0#1.base|)) (exists ((v_ArrVal_22 (_ BitVec 1))) (= (store |c_old(#valid)| |alloc_node_~temp~0#1.base| v_ArrVal_22) |c_#valid|)))) is different from true [2022-12-14 10:40:12,993 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 10:40:12,993 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2022-12-14 10:40:13,003 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 4 not checked. [2022-12-14 10:40:13,004 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 10:40:13,149 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:40:13,149 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1391976158] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 10:40:13,149 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-12-14 10:40:13,150 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 7, 6, 7, 6] total 9 [2022-12-14 10:40:13,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173478459] [2022-12-14 10:40:13,152 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-12-14 10:40:13,155 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-14 10:40:13,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 10:40:13,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-14 10:40:13,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=44, Unknown=2, NotChecked=26, Total=90 [2022-12-14 10:40:13,178 INFO L87 Difference]: Start difference. First operand has 35 states, 19 states have (on average 1.6842105263157894) internal successors, (32), 31 states have internal predecessors, (32), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 10 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 8 states have internal predecessors, (20), 2 states have call successors, (3), 3 states have call predecessors, (3), 4 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-12-14 10:40:17,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:40:17,444 INFO L93 Difference]: Finished difference Result 31 states and 32 transitions. [2022-12-14 10:40:17,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-14 10:40:17,446 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 8 states have internal predecessors, (20), 2 states have call successors, (3), 3 states have call predecessors, (3), 4 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 16 [2022-12-14 10:40:17,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:40:17,450 INFO L225 Difference]: With dead ends: 31 [2022-12-14 10:40:17,451 INFO L226 Difference]: Without dead ends: 28 [2022-12-14 10:40:17,452 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 72 SyntacticMatches, 10 SemanticMatches, 11 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=34, Invalid=82, Unknown=2, NotChecked=38, Total=156 [2022-12-14 10:40:17,454 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 21 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 56 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 10:40:17,455 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 57 Invalid, 191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 131 Invalid, 0 Unknown, 56 Unchecked, 0.1s Time] [2022-12-14 10:40:17,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2022-12-14 10:40:17,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2022-12-14 10:40:17,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 17 states have (on average 1.411764705882353) internal successors, (24), 24 states have internal predecessors, (24), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-14 10:40:17,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 28 transitions. [2022-12-14 10:40:17,479 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 28 transitions. Word has length 16 [2022-12-14 10:40:17,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:40:17,480 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 28 transitions. [2022-12-14 10:40:17,480 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 8 states have internal predecessors, (20), 2 states have call successors, (3), 3 states have call predecessors, (3), 4 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-12-14 10:40:17,480 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 28 transitions. [2022-12-14 10:40:17,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-12-14 10:40:17,481 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:40:17,481 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:40:17,492 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3a4521a-68c1-44a0-af0d-3d91743ff39f/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-12-14 10:40:17,687 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3a4521a-68c1-44a0-af0d-3d91743ff39f/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (3)] Ended with exit code 0 [2022-12-14 10:40:17,896 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3a4521a-68c1-44a0-af0d-3d91743ff39f/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-14 10:40:18,082 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3a4521a-68c1-44a0-af0d-3d91743ff39f/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3a4521a-68c1-44a0-af0d-3d91743ff39f/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3a4521a-68c1-44a0-af0d-3d91743ff39f/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 10:40:18,083 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-12-14 10:40:18,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:40:18,084 INFO L85 PathProgramCache]: Analyzing trace with hash -1794625017, now seen corresponding path program 1 times [2022-12-14 10:40:18,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 10:40:18,085 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [597159984] [2022-12-14 10:40:18,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:40:18,085 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 10:40:18,085 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3a4521a-68c1-44a0-af0d-3d91743ff39f/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 10:40:18,087 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3a4521a-68c1-44a0-af0d-3d91743ff39f/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 10:40:18,088 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3a4521a-68c1-44a0-af0d-3d91743ff39f/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-12-14 10:40:18,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:40:18,130 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 18 conjunts are in the unsatisfiable core [2022-12-14 10:40:18,132 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:40:18,137 INFO L350 Elim1Store]: Elim1 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 [2022-12-14 10:40:18,143 INFO L350 Elim1Store]: Elim1 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 7 [2022-12-14 10:40:18,246 WARN L859 $PredicateComparison]: unable to prove that (exists ((|alloc_node_~temp~0#1.base| (_ BitVec 32))) (and (= (_ bv0 1) (select |c_old(#valid)| |alloc_node_~temp~0#1.base|)) (exists ((v_ArrVal_33 (_ BitVec 32))) (= (store |c_old(#length)| |alloc_node_~temp~0#1.base| v_ArrVal_33) |c_#length|)))) is different from true [2022-12-14 10:40:18,278 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:40:18,279 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-12-14 10:40:18,288 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-12-14 10:40:18,288 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-12-14 10:40:18,305 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 4 not checked. [2022-12-14 10:40:18,305 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 10:40:18,490 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 10:40:18,490 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [597159984] [2022-12-14 10:40:18,490 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [597159984] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 10:40:18,490 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [524532294] [2022-12-14 10:40:18,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:40:18,490 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-12-14 10:40:18,491 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3a4521a-68c1-44a0-af0d-3d91743ff39f/bin/utaipan-gh47qXpMRh/cvc4 [2022-12-14 10:40:18,491 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3a4521a-68c1-44a0-af0d-3d91743ff39f/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-12-14 10:40:18,492 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3a4521a-68c1-44a0-af0d-3d91743ff39f/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (6)] Waiting until timeout for monitored process [2022-12-14 10:40:18,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:40:18,559 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 18 conjunts are in the unsatisfiable core [2022-12-14 10:40:18,561 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:40:18,567 INFO L350 Elim1Store]: Elim1 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 [2022-12-14 10:40:18,573 INFO L350 Elim1Store]: Elim1 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 7 [2022-12-14 10:40:18,629 WARN L859 $PredicateComparison]: unable to prove that (exists ((|alloc_node_~temp~0#1.base| (_ BitVec 32))) (and (= (_ bv0 1) (select |c_old(#valid)| |alloc_node_~temp~0#1.base|)) (exists ((v_ArrVal_43 (_ BitVec 32))) (= |c_#length| (store |c_old(#length)| |alloc_node_~temp~0#1.base| v_ArrVal_43))))) is different from true [2022-12-14 10:40:18,657 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:40:18,658 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-12-14 10:40:18,668 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-12-14 10:40:18,669 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-12-14 10:40:18,672 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 4 not checked. [2022-12-14 10:40:18,672 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 10:40:18,797 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [524532294] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 10:40:18,797 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1796662015] [2022-12-14 10:40:18,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:40:18,797 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 10:40:18,797 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3a4521a-68c1-44a0-af0d-3d91743ff39f/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 10:40:18,798 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3a4521a-68c1-44a0-af0d-3d91743ff39f/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 10:40:18,799 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3a4521a-68c1-44a0-af0d-3d91743ff39f/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-14 10:40:18,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:40:18,835 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 18 conjunts are in the unsatisfiable core [2022-12-14 10:40:18,837 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:40:18,841 INFO L350 Elim1Store]: Elim1 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 7 [2022-12-14 10:40:18,845 INFO L350 Elim1Store]: Elim1 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 [2022-12-14 10:40:18,902 WARN L859 $PredicateComparison]: unable to prove that (exists ((|alloc_node_~temp~0#1.base| (_ BitVec 32))) (and (= (_ bv0 1) (select |c_old(#valid)| |alloc_node_~temp~0#1.base|)) (exists ((v_ArrVal_53 (_ BitVec 32))) (= |c_#length| (store |c_old(#length)| |alloc_node_~temp~0#1.base| v_ArrVal_53))))) is different from true [2022-12-14 10:40:18,928 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 10:40:18,929 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-12-14 10:40:18,937 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-12-14 10:40:18,937 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-12-14 10:40:18,942 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 4 not checked. [2022-12-14 10:40:18,942 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 10:40:21,067 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1796662015] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 10:40:21,067 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 10:40:21,067 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 10 [2022-12-14 10:40:21,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338823939] [2022-12-14 10:40:21,067 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 10:40:21,068 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-12-14 10:40:21,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 10:40:21,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-12-14 10:40:21,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=72, Unknown=3, NotChecked=54, Total=156 [2022-12-14 10:40:21,069 INFO L87 Difference]: Start difference. First operand 28 states and 28 transitions. Second operand has 11 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 8 states have internal predecessors, (20), 2 states have call successors, (2), 2 states have call predecessors, (2), 4 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-12-14 10:40:21,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:40:21,278 INFO L93 Difference]: Finished difference Result 24 states and 24 transitions. [2022-12-14 10:40:21,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-14 10:40:21,279 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 8 states have internal predecessors, (20), 2 states have call successors, (2), 2 states have call predecessors, (2), 4 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 16 [2022-12-14 10:40:21,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:40:21,279 INFO L225 Difference]: With dead ends: 24 [2022-12-14 10:40:21,279 INFO L226 Difference]: Without dead ends: 24 [2022-12-14 10:40:21,279 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 38 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=35, Invalid=106, Unknown=3, NotChecked=66, Total=210 [2022-12-14 10:40:21,281 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 25 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 60 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 10:40:21,281 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 25 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 98 Invalid, 0 Unknown, 60 Unchecked, 0.1s Time] [2022-12-14 10:40:21,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2022-12-14 10:40:21,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2022-12-14 10:40:21,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 20 states have internal predecessors, (20), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-14 10:40:21,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 24 transitions. [2022-12-14 10:40:21,284 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 24 transitions. Word has length 16 [2022-12-14 10:40:21,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:40:21,284 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 24 transitions. [2022-12-14 10:40:21,284 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 8 states have internal predecessors, (20), 2 states have call successors, (2), 2 states have call predecessors, (2), 4 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-12-14 10:40:21,284 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 24 transitions. [2022-12-14 10:40:21,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-12-14 10:40:21,284 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:40:21,284 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:40:21,292 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3a4521a-68c1-44a0-af0d-3d91743ff39f/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Ended with exit code 0 [2022-12-14 10:40:21,491 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3a4521a-68c1-44a0-af0d-3d91743ff39f/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (6)] Forceful destruction successful, exit code 0 [2022-12-14 10:40:21,693 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3a4521a-68c1-44a0-af0d-3d91743ff39f/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-12-14 10:40:21,886 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3a4521a-68c1-44a0-af0d-3d91743ff39f/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3a4521a-68c1-44a0-af0d-3d91743ff39f/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3a4521a-68c1-44a0-af0d-3d91743ff39f/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 10:40:21,887 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-12-14 10:40:21,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:40:21,888 INFO L85 PathProgramCache]: Analyzing trace with hash 78968552, now seen corresponding path program 1 times [2022-12-14 10:40:21,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 10:40:21,889 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [335193006] [2022-12-14 10:40:21,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:40:21,889 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 10:40:21,889 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3a4521a-68c1-44a0-af0d-3d91743ff39f/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 10:40:21,890 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3a4521a-68c1-44a0-af0d-3d91743ff39f/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 10:40:21,891 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3a4521a-68c1-44a0-af0d-3d91743ff39f/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-12-14 10:40:21,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:40:21,946 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 9 conjunts are in the unsatisfiable core [2022-12-14 10:40:21,948 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:40:21,951 INFO L350 Elim1Store]: Elim1 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 7 [2022-12-14 10:40:21,970 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-14 10:40:21,983 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2022-12-14 10:40:21,991 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-14 10:40:21,991 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 10:40:21,991 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 10:40:21,991 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [335193006] [2022-12-14 10:40:21,991 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [335193006] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:40:21,991 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:40:21,991 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-14 10:40:21,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322769586] [2022-12-14 10:40:21,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:40:21,992 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-14 10:40:21,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 10:40:21,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-14 10:40:21,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-14 10:40:21,993 INFO L87 Difference]: Start difference. First operand 24 states and 24 transitions. Second operand has 7 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-12-14 10:40:22,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:40:22,096 INFO L93 Difference]: Finished difference Result 23 states and 23 transitions. [2022-12-14 10:40:22,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-14 10:40:22,096 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 19 [2022-12-14 10:40:22,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:40:22,097 INFO L225 Difference]: With dead ends: 23 [2022-12-14 10:40:22,097 INFO L226 Difference]: Without dead ends: 23 [2022-12-14 10:40:22,097 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-12-14 10:40:22,098 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 9 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 10:40:22,099 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 52 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 10:40:22,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2022-12-14 10:40:22,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2022-12-14 10:40:22,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 17 states have (on average 1.1176470588235294) internal successors, (19), 19 states have internal predecessors, (19), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-14 10:40:22,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 23 transitions. [2022-12-14 10:40:22,102 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 23 transitions. Word has length 19 [2022-12-14 10:40:22,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:40:22,102 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 23 transitions. [2022-12-14 10:40:22,103 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-12-14 10:40:22,103 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 23 transitions. [2022-12-14 10:40:22,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-12-14 10:40:22,103 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:40:22,103 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:40:22,111 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3a4521a-68c1-44a0-af0d-3d91743ff39f/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-12-14 10:40:22,304 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3a4521a-68c1-44a0-af0d-3d91743ff39f/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 10:40:22,304 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-12-14 10:40:22,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:40:22,305 INFO L85 PathProgramCache]: Analyzing trace with hash 78968553, now seen corresponding path program 1 times [2022-12-14 10:40:22,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 10:40:22,305 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2076348675] [2022-12-14 10:40:22,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:40:22,306 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 10:40:22,306 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3a4521a-68c1-44a0-af0d-3d91743ff39f/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 10:40:22,306 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3a4521a-68c1-44a0-af0d-3d91743ff39f/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 10:40:22,307 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3a4521a-68c1-44a0-af0d-3d91743ff39f/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-12-14 10:40:22,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:40:22,352 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 16 conjunts are in the unsatisfiable core [2022-12-14 10:40:22,354 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:40:22,357 INFO L350 Elim1Store]: Elim1 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 [2022-12-14 10:40:22,397 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-14 10:40:22,402 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-14 10:40:22,429 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-12-14 10:40:22,431 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2022-12-14 10:40:22,447 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-14 10:40:22,447 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 10:40:22,448 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 10:40:22,448 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2076348675] [2022-12-14 10:40:22,448 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2076348675] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:40:22,448 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:40:22,448 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-14 10:40:22,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235051093] [2022-12-14 10:40:22,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:40:22,448 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-14 10:40:22,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 10:40:22,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-14 10:40:22,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-14 10:40:22,449 INFO L87 Difference]: Start difference. First operand 23 states and 23 transitions. Second operand has 7 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-12-14 10:40:22,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:40:22,556 INFO L93 Difference]: Finished difference Result 22 states and 22 transitions. [2022-12-14 10:40:22,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-14 10:40:22,557 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 19 [2022-12-14 10:40:22,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:40:22,557 INFO L225 Difference]: With dead ends: 22 [2022-12-14 10:40:22,558 INFO L226 Difference]: Without dead ends: 22 [2022-12-14 10:40:22,558 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-12-14 10:40:22,559 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 7 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 10:40:22,559 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 68 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 10:40:22,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2022-12-14 10:40:22,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2022-12-14 10:40:22,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 17 states have (on average 1.0588235294117647) internal successors, (18), 18 states have internal predecessors, (18), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-14 10:40:22,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 22 transitions. [2022-12-14 10:40:22,562 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 22 transitions. Word has length 19 [2022-12-14 10:40:22,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:40:22,562 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 22 transitions. [2022-12-14 10:40:22,563 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-12-14 10:40:22,563 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 22 transitions. [2022-12-14 10:40:22,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-12-14 10:40:22,563 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:40:22,563 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:40:22,571 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3a4521a-68c1-44a0-af0d-3d91743ff39f/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Ended with exit code 0 [2022-12-14 10:40:22,764 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3a4521a-68c1-44a0-af0d-3d91743ff39f/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 10:40:22,765 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-12-14 10:40:22,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:40:22,767 INFO L85 PathProgramCache]: Analyzing trace with hash 570997579, now seen corresponding path program 1 times [2022-12-14 10:40:22,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 10:40:22,768 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1065647515] [2022-12-14 10:40:22,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:40:22,768 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 10:40:22,769 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3a4521a-68c1-44a0-af0d-3d91743ff39f/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 10:40:22,771 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3a4521a-68c1-44a0-af0d-3d91743ff39f/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 10:40:22,774 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3a4521a-68c1-44a0-af0d-3d91743ff39f/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-12-14 10:40:22,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:40:22,821 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-14 10:40:22,823 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:40:22,968 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:40:22,968 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 10:40:23,072 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-14 10:40:23,072 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 10:40:23,072 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1065647515] [2022-12-14 10:40:23,072 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1065647515] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 10:40:23,072 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1909236983] [2022-12-14 10:40:23,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:40:23,072 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-12-14 10:40:23,072 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3a4521a-68c1-44a0-af0d-3d91743ff39f/bin/utaipan-gh47qXpMRh/cvc4 [2022-12-14 10:40:23,073 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3a4521a-68c1-44a0-af0d-3d91743ff39f/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-12-14 10:40:23,074 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3a4521a-68c1-44a0-af0d-3d91743ff39f/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (11)] Waiting until timeout for monitored process [2022-12-14 10:40:23,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:40:23,142 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-14 10:40:23,142 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:40:23,171 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:40:23,171 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 10:40:23,211 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-14 10:40:23,211 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1909236983] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 10:40:23,211 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1944589202] [2022-12-14 10:40:23,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:40:23,211 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 10:40:23,212 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3a4521a-68c1-44a0-af0d-3d91743ff39f/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 10:40:23,212 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3a4521a-68c1-44a0-af0d-3d91743ff39f/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 10:40:23,213 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3a4521a-68c1-44a0-af0d-3d91743ff39f/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-12-14 10:40:23,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:40:23,266 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-14 10:40:23,267 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:40:23,303 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:40:23,303 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 10:40:23,345 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-14 10:40:23,346 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1944589202] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 10:40:23,346 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-12-14 10:40:23,346 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 6, 5, 6, 5] total 11 [2022-12-14 10:40:23,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106928433] [2022-12-14 10:40:23,346 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-12-14 10:40:23,347 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-12-14 10:40:23,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 10:40:23,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-12-14 10:40:23,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2022-12-14 10:40:23,348 INFO L87 Difference]: Start difference. First operand 22 states and 22 transitions. Second operand has 12 states, 11 states have (on average 3.8181818181818183) internal successors, (42), 10 states have internal predecessors, (42), 4 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2022-12-14 10:40:23,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:40:23,455 INFO L93 Difference]: Finished difference Result 22 states and 22 transitions. [2022-12-14 10:40:23,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-14 10:40:23,455 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 3.8181818181818183) internal successors, (42), 10 states have internal predecessors, (42), 4 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) Word has length 23 [2022-12-14 10:40:23,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:40:23,456 INFO L225 Difference]: With dead ends: 22 [2022-12-14 10:40:23,456 INFO L226 Difference]: Without dead ends: 22 [2022-12-14 10:40:23,456 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 119 SyntacticMatches, 3 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2022-12-14 10:40:23,457 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 14 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 10:40:23,457 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 43 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 10:40:23,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2022-12-14 10:40:23,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 21. [2022-12-14 10:40:23,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 17 states have (on average 1.0) internal successors, (17), 17 states have internal predecessors, (17), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-14 10:40:23,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 21 transitions. [2022-12-14 10:40:23,460 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 21 transitions. Word has length 23 [2022-12-14 10:40:23,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:40:23,460 INFO L495 AbstractCegarLoop]: Abstraction has 21 states and 21 transitions. [2022-12-14 10:40:23,460 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 3.8181818181818183) internal successors, (42), 10 states have internal predecessors, (42), 4 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2022-12-14 10:40:23,460 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 21 transitions. [2022-12-14 10:40:23,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-12-14 10:40:23,461 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:40:23,461 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:40:23,465 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3a4521a-68c1-44a0-af0d-3d91743ff39f/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2022-12-14 10:40:23,667 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3a4521a-68c1-44a0-af0d-3d91743ff39f/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (11)] Ended with exit code 0 [2022-12-14 10:40:23,874 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3a4521a-68c1-44a0-af0d-3d91743ff39f/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Ended with exit code 0 [2022-12-14 10:40:24,063 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3a4521a-68c1-44a0-af0d-3d91743ff39f/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3a4521a-68c1-44a0-af0d-3d91743ff39f/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3a4521a-68c1-44a0-af0d-3d91743ff39f/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 10:40:24,064 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-12-14 10:40:24,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:40:24,066 INFO L85 PathProgramCache]: Analyzing trace with hash -1027138706, now seen corresponding path program 1 times [2022-12-14 10:40:24,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 10:40:24,066 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [737591890] [2022-12-14 10:40:24,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:40:24,067 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 10:40:24,067 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3a4521a-68c1-44a0-af0d-3d91743ff39f/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 10:40:24,070 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3a4521a-68c1-44a0-af0d-3d91743ff39f/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 10:40:24,073 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3a4521a-68c1-44a0-af0d-3d91743ff39f/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-12-14 10:40:24,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 10:40:24,135 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-14 10:40:24,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 10:40:24,183 INFO L130 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2022-12-14 10:40:24,183 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-14 10:40:24,184 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_LEAK (11 of 12 remaining) [2022-12-14 10:40:24,186 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 12 remaining) [2022-12-14 10:40:24,186 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 12 remaining) [2022-12-14 10:40:24,186 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 12 remaining) [2022-12-14 10:40:24,186 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 12 remaining) [2022-12-14 10:40:24,186 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 12 remaining) [2022-12-14 10:40:24,186 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 12 remaining) [2022-12-14 10:40:24,187 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 12 remaining) [2022-12-14 10:40:24,187 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 12 remaining) [2022-12-14 10:40:24,187 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_FREE (2 of 12 remaining) [2022-12-14 10:40:24,187 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_FREE (1 of 12 remaining) [2022-12-14 10:40:24,187 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_FREE (0 of 12 remaining) [2022-12-14 10:40:24,195 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3a4521a-68c1-44a0-af0d-3d91743ff39f/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2022-12-14 10:40:24,388 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3a4521a-68c1-44a0-af0d-3d91743ff39f/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 10:40:24,392 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2022-12-14 10:40:24,397 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-14 10:40:24,431 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.12 10:40:24 BoogieIcfgContainer [2022-12-14 10:40:24,431 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-14 10:40:24,432 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-14 10:40:24,432 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-14 10:40:24,432 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-14 10:40:24,432 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 10:40:12" (3/4) ... [2022-12-14 10:40:24,437 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-12-14 10:40:24,438 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-14 10:40:24,438 INFO L158 Benchmark]: Toolchain (without parser) took 13144.66ms. Allocated memory was 83.9MB in the beginning and 100.7MB in the end (delta: 16.8MB). Free memory was 61.7MB in the beginning and 36.2MB in the end (delta: 25.5MB). Peak memory consumption was 44.1MB. Max. memory is 16.1GB. [2022-12-14 10:40:24,439 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 65.0MB. Free memory was 43.6MB in the beginning and 43.5MB in the end (delta: 73.4kB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 10:40:24,439 INFO L158 Benchmark]: CACSL2BoogieTranslator took 363.02ms. Allocated memory is still 83.9MB. Free memory was 61.4MB in the beginning and 62.9MB in the end (delta: -1.5MB). Peak memory consumption was 23.4MB. Max. memory is 16.1GB. [2022-12-14 10:40:24,439 INFO L158 Benchmark]: Boogie Procedure Inliner took 37.76ms. Allocated memory is still 83.9MB. Free memory was 62.9MB in the beginning and 61.2MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 10:40:24,440 INFO L158 Benchmark]: Boogie Preprocessor took 16.19ms. Allocated memory is still 83.9MB. Free memory was 61.2MB in the beginning and 59.5MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 10:40:24,440 INFO L158 Benchmark]: RCFGBuilder took 301.02ms. Allocated memory is still 83.9MB. Free memory was 59.5MB in the beginning and 46.9MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-12-14 10:40:24,440 INFO L158 Benchmark]: TraceAbstraction took 12415.74ms. Allocated memory was 83.9MB in the beginning and 100.7MB in the end (delta: 16.8MB). Free memory was 46.5MB in the beginning and 36.2MB in the end (delta: 10.4MB). Peak memory consumption was 29.1MB. Max. memory is 16.1GB. [2022-12-14 10:40:24,441 INFO L158 Benchmark]: Witness Printer took 6.07ms. Allocated memory is still 100.7MB. Free memory is still 36.2MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 10:40:24,443 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 65.0MB. Free memory was 43.6MB in the beginning and 43.5MB in the end (delta: 73.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 363.02ms. Allocated memory is still 83.9MB. Free memory was 61.4MB in the beginning and 62.9MB in the end (delta: -1.5MB). Peak memory consumption was 23.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 37.76ms. Allocated memory is still 83.9MB. Free memory was 62.9MB in the beginning and 61.2MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 16.19ms. Allocated memory is still 83.9MB. Free memory was 61.2MB in the beginning and 59.5MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 301.02ms. Allocated memory is still 83.9MB. Free memory was 59.5MB in the beginning and 46.9MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 12415.74ms. Allocated memory was 83.9MB in the beginning and 100.7MB in the end (delta: 16.8MB). Free memory was 46.5MB in the beginning and 36.2MB in the end (delta: 10.4MB). Peak memory consumption was 29.1MB. Max. memory is 16.1GB. * Witness Printer took 6.07ms. Allocated memory is still 100.7MB. Free memory is still 36.2MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 568]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 568. Possible FailurePath: [L569] CALL, EXPR alloc_node() [L562] struct node* temp = (struct node*) malloc(sizeof(struct node)); [L563] COND FALSE !(((void *)0) == temp) VAL [temp={1:0}] [L566] return temp; VAL [\result={1:0}, temp={1:0}] [L569] RET, EXPR alloc_node() VAL [alloc_node()={1:0}] [L569] struct node* s = alloc_node(); [L570] CALL, EXPR alloc_node() [L562] struct node* temp = (struct node*) malloc(sizeof(struct node)); [L563] COND FALSE !(((void *)0) == temp) VAL [temp={2:0}] [L566] return temp; VAL [\result={2:0}, temp={2:0}] [L570] RET, EXPR alloc_node() VAL [alloc_node()={2:0}, s={1:0}] [L570] s->next = alloc_node() VAL [alloc_node()={2:0}, s={1:0}] [L571] EXPR s->next VAL [s={1:0}, s->next={2:0}] [L571] *s = *(s->next) VAL [*s = *(s->next)={0:0}, s={1:0}, s->next={2:0}] [L572] free(s) VAL [s={1:0}] [L572] free(s) VAL [s={1:0}] [L572] free(s) [L573] return 0; VAL [\result=0, s={1:0}] - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 572]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 572]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 572]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 35 locations, 12 error locations. Started 1 CEGAR loops. OverallTime: 12.3s, OverallIterations: 6, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 4.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 76 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 76 mSDsluCounter, 245 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 116 IncrementalHoareTripleChecker+Unchecked, 178 mSDsCounter, 9 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 434 IncrementalHoareTripleChecker+Invalid, 559 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 9 mSolverCounterUnsat, 67 mSDtfsCounter, 434 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 321 GetRequests, 255 SyntacticMatches, 15 SemanticMatches, 51 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 6.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=35occurred in iteration=0, InterpolantAutomatonStates: 42, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 4.2s InterpolantComputationTime, 228 NumberOfCodeBlocks, 228 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 303 ConstructedInterpolants, 44 QuantifiedInterpolants, 1809 SizeOfPredicates, 31 NumberOfNonLiveVariables, 678 ConjunctsInSsa, 126 ConjunctsInUnsatCore, 17 InterpolantComputations, 2 PerfectInterpolantSequences, 25/85 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-12-14 10:40:24,460 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3a4521a-68c1-44a0-af0d-3d91743ff39f/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample