./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ldv-memsafety/memleaks_test14_3.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version dbf71c69 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de13650-6abf-48de-a52c-736fb3f0fbb6/bin/uautomizer-J5u9QxTXDZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de13650-6abf-48de-a52c-736fb3f0fbb6/bin/uautomizer-J5u9QxTXDZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de13650-6abf-48de-a52c-736fb3f0fbb6/bin/uautomizer-J5u9QxTXDZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de13650-6abf-48de-a52c-736fb3f0fbb6/bin/uautomizer-J5u9QxTXDZ/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test14_3.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de13650-6abf-48de-a52c-736fb3f0fbb6/bin/uautomizer-J5u9QxTXDZ/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de13650-6abf-48de-a52c-736fb3f0fbb6/bin/uautomizer-J5u9QxTXDZ --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 12d7333ecc5650929161cd50df756e255d5b3c2b6fe8799d2d7337cf38a3a1cb --- 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-dbf71c6-m [2022-10-17 10:57:54,541 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 10:57:54,544 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 10:57:54,591 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 10:57:54,592 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 10:57:54,597 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 10:57:54,599 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 10:57:54,604 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 10:57:54,610 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 10:57:54,612 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 10:57:54,613 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 10:57:54,614 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 10:57:54,614 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 10:57:54,615 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 10:57:54,616 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 10:57:54,617 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 10:57:54,618 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 10:57:54,619 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 10:57:54,621 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 10:57:54,623 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 10:57:54,625 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 10:57:54,626 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 10:57:54,628 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 10:57:54,628 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 10:57:54,633 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 10:57:54,634 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 10:57:54,634 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 10:57:54,635 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 10:57:54,635 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 10:57:54,637 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 10:57:54,637 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 10:57:54,638 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 10:57:54,639 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 10:57:54,639 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 10:57:54,651 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 10:57:54,652 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 10:57:54,653 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 10:57:54,653 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 10:57:54,653 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 10:57:54,655 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 10:57:54,656 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 10:57:54,657 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de13650-6abf-48de-a52c-736fb3f0fbb6/bin/uautomizer-J5u9QxTXDZ/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-10-17 10:57:54,700 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 10:57:54,700 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 10:57:54,701 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-17 10:57:54,701 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-17 10:57:54,702 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-17 10:57:54,702 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-17 10:57:54,703 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-17 10:57:54,703 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-17 10:57:54,703 INFO L138 SettingsManager]: * Use SBE=true [2022-10-17 10:57:54,703 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 10:57:54,703 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-17 10:57:54,704 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-10-17 10:57:54,704 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-17 10:57:54,704 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-17 10:57:54,704 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 10:57:54,704 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-10-17 10:57:54,705 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-10-17 10:57:54,705 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-10-17 10:57:54,705 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-17 10:57:54,705 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-10-17 10:57:54,705 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-17 10:57:54,705 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 10:57:54,706 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 10:57:54,706 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-17 10:57:54,706 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-17 10:57:54,706 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:57:54,706 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 10:57:54,707 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-17 10:57:54,707 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-17 10:57:54,707 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-17 10:57:54,707 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_6de13650-6abf-48de-a52c-736fb3f0fbb6/bin/uautomizer-J5u9QxTXDZ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de13650-6abf-48de-a52c-736fb3f0fbb6/bin/uautomizer-J5u9QxTXDZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 12d7333ecc5650929161cd50df756e255d5b3c2b6fe8799d2d7337cf38a3a1cb [2022-10-17 10:57:54,937 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 10:57:54,962 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 10:57:54,965 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 10:57:54,967 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 10:57:54,968 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 10:57:54,970 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de13650-6abf-48de-a52c-736fb3f0fbb6/bin/uautomizer-J5u9QxTXDZ/../../sv-benchmarks/c/ldv-memsafety/memleaks_test14_3.i [2022-10-17 10:57:55,041 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de13650-6abf-48de-a52c-736fb3f0fbb6/bin/uautomizer-J5u9QxTXDZ/data/c9fe0a0bd/2938c39ca5e34df0936fd33b6c7aa47f/FLAGc625354a6 [2022-10-17 10:57:55,555 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 10:57:55,556 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de13650-6abf-48de-a52c-736fb3f0fbb6/sv-benchmarks/c/ldv-memsafety/memleaks_test14_3.i [2022-10-17 10:57:55,580 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de13650-6abf-48de-a52c-736fb3f0fbb6/bin/uautomizer-J5u9QxTXDZ/data/c9fe0a0bd/2938c39ca5e34df0936fd33b6c7aa47f/FLAGc625354a6 [2022-10-17 10:57:55,834 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de13650-6abf-48de-a52c-736fb3f0fbb6/bin/uautomizer-J5u9QxTXDZ/data/c9fe0a0bd/2938c39ca5e34df0936fd33b6c7aa47f [2022-10-17 10:57:55,836 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 10:57:55,838 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 10:57:55,839 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 10:57:55,839 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 10:57:55,843 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 10:57:55,843 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:57:55" (1/1) ... [2022-10-17 10:57:55,844 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b3b0c2d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:57:55, skipping insertion in model container [2022-10-17 10:57:55,844 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:57:55" (1/1) ... [2022-10-17 10:57:55,851 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 10:57:55,897 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 10:57:56,340 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:57:56,356 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) [2022-10-17 10:57:56,357 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@11b648aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:57:56, skipping insertion in model container [2022-10-17 10:57:56,357 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 10:57:56,357 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2022-10-17 10:57:56,361 INFO L158 Benchmark]: Toolchain (without parser) took 520.37ms. Allocated memory is still 86.0MB. Free memory was 60.6MB in the beginning and 56.8MB in the end (delta: 3.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-10-17 10:57:56,363 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 86.0MB. Free memory was 56.8MB in the beginning and 56.8MB in the end (delta: 40.7kB). There was no memory consumed. Max. memory is 16.1GB. [2022-10-17 10:57:56,364 INFO L158 Benchmark]: CACSL2BoogieTranslator took 518.14ms. Allocated memory is still 86.0MB. Free memory was 60.5MB in the beginning and 56.8MB in the end (delta: 3.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-10-17 10:57:56,366 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30ms. Allocated memory is still 86.0MB. Free memory was 56.8MB in the beginning and 56.8MB in the end (delta: 40.7kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 518.14ms. Allocated memory is still 86.0MB. Free memory was 60.5MB in the beginning and 56.8MB in the end (delta: 3.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 576]: 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/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de13650-6abf-48de-a52c-736fb3f0fbb6/bin/uautomizer-J5u9QxTXDZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de13650-6abf-48de-a52c-736fb3f0fbb6/bin/uautomizer-J5u9QxTXDZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de13650-6abf-48de-a52c-736fb3f0fbb6/bin/uautomizer-J5u9QxTXDZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de13650-6abf-48de-a52c-736fb3f0fbb6/bin/uautomizer-J5u9QxTXDZ/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test14_3.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de13650-6abf-48de-a52c-736fb3f0fbb6/bin/uautomizer-J5u9QxTXDZ/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de13650-6abf-48de-a52c-736fb3f0fbb6/bin/uautomizer-J5u9QxTXDZ --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 12d7333ecc5650929161cd50df756e255d5b3c2b6fe8799d2d7337cf38a3a1cb --- 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-dbf71c6-m [2022-10-17 10:57:58,590 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 10:57:58,593 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 10:57:58,645 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 10:57:58,646 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 10:57:58,650 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 10:57:58,653 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 10:57:58,660 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 10:57:58,666 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 10:57:58,671 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 10:57:58,673 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 10:57:58,675 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 10:57:58,676 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 10:57:58,679 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 10:57:58,680 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 10:57:58,682 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 10:57:58,684 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 10:57:58,685 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 10:57:58,687 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 10:57:58,700 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 10:57:58,702 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 10:57:58,703 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 10:57:58,706 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 10:57:58,709 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 10:57:58,719 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 10:57:58,720 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 10:57:58,720 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 10:57:58,723 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 10:57:58,723 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 10:57:58,724 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 10:57:58,725 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 10:57:58,726 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 10:57:58,728 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 10:57:58,728 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 10:57:58,729 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 10:57:58,730 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 10:57:58,740 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 10:57:58,741 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 10:57:58,741 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 10:57:58,743 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 10:57:58,743 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 10:57:58,744 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de13650-6abf-48de-a52c-736fb3f0fbb6/bin/uautomizer-J5u9QxTXDZ/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2022-10-17 10:57:58,787 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 10:57:58,787 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 10:57:58,789 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-17 10:57:58,789 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-17 10:57:58,790 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-17 10:57:58,790 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-17 10:57:58,791 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-17 10:57:58,791 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-17 10:57:58,791 INFO L138 SettingsManager]: * Use SBE=true [2022-10-17 10:57:58,792 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 10:57:58,793 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-17 10:57:58,793 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-10-17 10:57:58,793 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-17 10:57:58,793 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-17 10:57:58,794 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 10:57:58,794 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-10-17 10:57:58,794 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-10-17 10:57:58,794 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-10-17 10:57:58,795 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-17 10:57:58,795 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-10-17 10:57:58,795 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-10-17 10:57:58,795 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-10-17 10:57:58,795 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-17 10:57:58,796 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 10:57:58,796 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 10:57:58,796 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-17 10:57:58,797 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-17 10:57:58,797 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:57:58,797 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 10:57:58,797 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-17 10:57:58,798 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-10-17 10:57:58,798 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-10-17 10:57:58,798 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-10-17 10:57:58,798 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_6de13650-6abf-48de-a52c-736fb3f0fbb6/bin/uautomizer-J5u9QxTXDZ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de13650-6abf-48de-a52c-736fb3f0fbb6/bin/uautomizer-J5u9QxTXDZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 12d7333ecc5650929161cd50df756e255d5b3c2b6fe8799d2d7337cf38a3a1cb [2022-10-17 10:57:59,158 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 10:57:59,192 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 10:57:59,195 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 10:57:59,196 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 10:57:59,196 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 10:57:59,198 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de13650-6abf-48de-a52c-736fb3f0fbb6/bin/uautomizer-J5u9QxTXDZ/../../sv-benchmarks/c/ldv-memsafety/memleaks_test14_3.i [2022-10-17 10:57:59,255 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de13650-6abf-48de-a52c-736fb3f0fbb6/bin/uautomizer-J5u9QxTXDZ/data/e0c59a2a0/5b702f80ea92440ba4f5b81360f5b676/FLAGe519b4887 [2022-10-17 10:57:59,852 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 10:57:59,852 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de13650-6abf-48de-a52c-736fb3f0fbb6/sv-benchmarks/c/ldv-memsafety/memleaks_test14_3.i [2022-10-17 10:57:59,869 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de13650-6abf-48de-a52c-736fb3f0fbb6/bin/uautomizer-J5u9QxTXDZ/data/e0c59a2a0/5b702f80ea92440ba4f5b81360f5b676/FLAGe519b4887 [2022-10-17 10:58:00,244 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de13650-6abf-48de-a52c-736fb3f0fbb6/bin/uautomizer-J5u9QxTXDZ/data/e0c59a2a0/5b702f80ea92440ba4f5b81360f5b676 [2022-10-17 10:58:00,247 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 10:58:00,249 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 10:58:00,252 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 10:58:00,252 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 10:58:00,256 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 10:58:00,256 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:58:00" (1/1) ... [2022-10-17 10:58:00,258 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5ebaf17 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:58:00, skipping insertion in model container [2022-10-17 10:58:00,258 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:58:00" (1/1) ... [2022-10-17 10:58:00,265 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 10:58:00,339 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 10:58:00,868 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:58:00,887 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-10-17 10:58:00,897 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 10:58:00,975 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:58:00,994 INFO L203 MainTranslator]: Completed pre-run [2022-10-17 10:58:01,065 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:58:01,109 INFO L208 MainTranslator]: Completed translation [2022-10-17 10:58:01,109 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:58:01 WrapperNode [2022-10-17 10:58:01,110 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 10:58:01,111 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-17 10:58:01,111 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-17 10:58:01,111 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-17 10:58:01,119 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:58:01" (1/1) ... [2022-10-17 10:58:01,142 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:58:01" (1/1) ... [2022-10-17 10:58:01,164 INFO L138 Inliner]: procedures = 168, calls = 79, calls flagged for inlining = 21, calls inlined = 6, statements flattened = 53 [2022-10-17 10:58:01,165 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-17 10:58:01,166 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-17 10:58:01,166 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-17 10:58:01,166 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-17 10:58:01,176 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:58:01" (1/1) ... [2022-10-17 10:58:01,176 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:58:01" (1/1) ... [2022-10-17 10:58:01,180 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:58:01" (1/1) ... [2022-10-17 10:58:01,181 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:58:01" (1/1) ... [2022-10-17 10:58:01,192 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:58:01" (1/1) ... [2022-10-17 10:58:01,196 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:58:01" (1/1) ... [2022-10-17 10:58:01,198 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:58:01" (1/1) ... [2022-10-17 10:58:01,200 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:58:01" (1/1) ... [2022-10-17 10:58:01,204 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-17 10:58:01,205 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-17 10:58:01,205 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-17 10:58:01,206 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-17 10:58:01,206 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:58:01" (1/1) ... [2022-10-17 10:58:01,223 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:58:01,236 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de13650-6abf-48de-a52c-736fb3f0fbb6/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:58:01,260 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de13650-6abf-48de-a52c-736fb3f0fbb6/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-17 10:58:01,263 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de13650-6abf-48de-a52c-736fb3f0fbb6/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-17 10:58:01,298 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_add [2022-10-17 10:58:01,299 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_add [2022-10-17 10:58:01,299 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-10-17 10:58:01,299 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-10-17 10:58:01,299 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_add [2022-10-17 10:58:01,299 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_add [2022-10-17 10:58:01,299 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-10-17 10:58:01,300 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-17 10:58:01,300 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-10-17 10:58:01,300 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-10-17 10:58:01,300 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-10-17 10:58:01,300 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-10-17 10:58:01,300 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-10-17 10:58:01,301 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_del [2022-10-17 10:58:01,301 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_del [2022-10-17 10:58:01,301 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-17 10:58:01,301 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-17 10:58:01,486 INFO L235 CfgBuilder]: Building ICFG [2022-10-17 10:58:01,488 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-17 10:58:01,970 INFO L276 CfgBuilder]: Performing block encoding [2022-10-17 10:58:01,981 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-17 10:58:01,982 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-10-17 10:58:01,984 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:58:01 BoogieIcfgContainer [2022-10-17 10:58:01,985 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-17 10:58:01,988 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-17 10:58:01,989 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-17 10:58:01,992 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-17 10:58:01,993 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.10 10:58:00" (1/3) ... [2022-10-17 10:58:01,993 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b464e48 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:58:01, skipping insertion in model container [2022-10-17 10:58:01,994 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:58:01" (2/3) ... [2022-10-17 10:58:01,995 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b464e48 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:58:01, skipping insertion in model container [2022-10-17 10:58:01,995 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:58:01" (3/3) ... [2022-10-17 10:58:01,997 INFO L112 eAbstractionObserver]: Analyzing ICFG memleaks_test14_3.i [2022-10-17 10:58:02,016 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-17 10:58:02,017 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 26 error locations. [2022-10-17 10:58:02,091 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-17 10:58:02,100 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;@76fc3270, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-17 10:58:02,100 INFO L358 AbstractCegarLoop]: Starting to check reachability of 26 error locations. [2022-10-17 10:58:02,108 INFO L276 IsEmpty]: Start isEmpty. Operand has 73 states, 38 states have (on average 1.7894736842105263) internal successors, (68), 65 states have internal predecessors, (68), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-10-17 10:58:02,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-10-17 10:58:02,117 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:58:02,118 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:58:02,119 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-10-17 10:58:02,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:58:02,127 INFO L85 PathProgramCache]: Analyzing trace with hash 57943215, now seen corresponding path program 1 times [2022-10-17 10:58:02,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-10-17 10:58:02,141 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [676722211] [2022-10-17 10:58:02,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:58:02,142 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-10-17 10:58:02,142 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de13650-6abf-48de-a52c-736fb3f0fbb6/bin/uautomizer-J5u9QxTXDZ/mathsat [2022-10-17 10:58:02,151 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de13650-6abf-48de-a52c-736fb3f0fbb6/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-10-17 10:58:02,171 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de13650-6abf-48de-a52c-736fb3f0fbb6/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-10-17 10:58:02,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:58:02,344 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 11 conjunts are in the unsatisfiable core [2022-10-17 10:58:02,356 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:58:02,442 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-10-17 10:58:02,566 INFO L356 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-10-17 10:58:02,567 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2022-10-17 10:58:02,644 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:58:02,644 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 10:58:02,646 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-10-17 10:58:02,646 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [676722211] [2022-10-17 10:58:02,647 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [676722211] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:58:02,647 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:58:02,647 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-10-17 10:58:02,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827667769] [2022-10-17 10:58:02,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:58:02,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-17 10:58:02,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-10-17 10:58:02,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-17 10:58:02,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-10-17 10:58:02,695 INFO L87 Difference]: Start difference. First operand has 73 states, 38 states have (on average 1.7894736842105263) internal successors, (68), 65 states have internal predecessors, (68), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 7 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-10-17 10:58:03,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:58:03,257 INFO L93 Difference]: Finished difference Result 83 states and 87 transitions. [2022-10-17 10:58:03,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-10-17 10:58:03,262 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2022-10-17 10:58:03,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:58:03,294 INFO L225 Difference]: With dead ends: 83 [2022-10-17 10:58:03,294 INFO L226 Difference]: Without dead ends: 81 [2022-10-17 10:58:03,296 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-10-17 10:58:03,305 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 64 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 194 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 137 SdHoareTripleChecker+Invalid, 253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 51 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-10-17 10:58:03,306 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 137 Invalid, 253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 194 Invalid, 0 Unknown, 51 Unchecked, 0.4s Time] [2022-10-17 10:58:03,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2022-10-17 10:58:03,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 70. [2022-10-17 10:58:03,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 37 states have (on average 1.7297297297297298) internal successors, (64), 62 states have internal predecessors, (64), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-10-17 10:58:03,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 72 transitions. [2022-10-17 10:58:03,358 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 72 transitions. Word has length 12 [2022-10-17 10:58:03,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:58:03,359 INFO L495 AbstractCegarLoop]: Abstraction has 70 states and 72 transitions. [2022-10-17 10:58:03,360 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-10-17 10:58:03,360 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 72 transitions. [2022-10-17 10:58:03,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-10-17 10:58:03,361 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:58:03,361 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:58:03,383 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de13650-6abf-48de-a52c-736fb3f0fbb6/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-10-17 10:58:03,579 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de13650-6abf-48de-a52c-736fb3f0fbb6/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 [2022-10-17 10:58:03,580 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-10-17 10:58:03,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:58:03,580 INFO L85 PathProgramCache]: Analyzing trace with hash 57943216, now seen corresponding path program 1 times [2022-10-17 10:58:03,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-10-17 10:58:03,584 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1300901366] [2022-10-17 10:58:03,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:58:03,584 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-10-17 10:58:03,584 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de13650-6abf-48de-a52c-736fb3f0fbb6/bin/uautomizer-J5u9QxTXDZ/mathsat [2022-10-17 10:58:03,585 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de13650-6abf-48de-a52c-736fb3f0fbb6/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-10-17 10:58:03,586 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de13650-6abf-48de-a52c-736fb3f0fbb6/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-10-17 10:58:03,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:58:03,697 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 20 conjunts are in the unsatisfiable core [2022-10-17 10:58:03,701 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:58:03,735 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-10-17 10:58:03,743 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-10-17 10:58:03,937 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 10:58:03,939 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-10-17 10:58:03,960 INFO L356 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-10-17 10:58:03,962 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-10-17 10:58:04,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:58:04,088 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 10:58:04,088 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-10-17 10:58:04,088 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1300901366] [2022-10-17 10:58:04,089 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1300901366] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:58:04,089 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:58:04,089 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-10-17 10:58:04,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902296438] [2022-10-17 10:58:04,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:58:04,090 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-10-17 10:58:04,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-10-17 10:58:04,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-10-17 10:58:04,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-10-17 10:58:04,092 INFO L87 Difference]: Start difference. First operand 70 states and 72 transitions. Second operand has 8 states, 6 states have (on average 1.5) internal successors, (9), 7 states have internal predecessors, (9), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-10-17 10:58:04,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:58:04,730 INFO L93 Difference]: Finished difference Result 88 states and 94 transitions. [2022-10-17 10:58:04,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-10-17 10:58:04,731 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 1.5) internal successors, (9), 7 states have internal predecessors, (9), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2022-10-17 10:58:04,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:58:04,733 INFO L225 Difference]: With dead ends: 88 [2022-10-17 10:58:04,733 INFO L226 Difference]: Without dead ends: 88 [2022-10-17 10:58:04,734 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-10-17 10:58:04,735 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 79 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 270 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 171 SdHoareTripleChecker+Invalid, 334 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 270 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 55 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-10-17 10:58:04,736 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 171 Invalid, 334 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 270 Invalid, 0 Unknown, 55 Unchecked, 0.6s Time] [2022-10-17 10:58:04,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2022-10-17 10:58:04,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 69. [2022-10-17 10:58:04,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 37 states have (on average 1.7027027027027026) internal successors, (63), 61 states have internal predecessors, (63), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-10-17 10:58:04,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 71 transitions. [2022-10-17 10:58:04,746 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 71 transitions. Word has length 12 [2022-10-17 10:58:04,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:58:04,746 INFO L495 AbstractCegarLoop]: Abstraction has 69 states and 71 transitions. [2022-10-17 10:58:04,747 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 1.5) internal successors, (9), 7 states have internal predecessors, (9), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-10-17 10:58:04,747 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 71 transitions. [2022-10-17 10:58:04,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-10-17 10:58:04,748 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:58:04,748 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:58:04,770 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de13650-6abf-48de-a52c-736fb3f0fbb6/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-10-17 10:58:04,959 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de13650-6abf-48de-a52c-736fb3f0fbb6/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 [2022-10-17 10:58:04,960 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-10-17 10:58:04,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:58:04,960 INFO L85 PathProgramCache]: Analyzing trace with hash -967961449, now seen corresponding path program 1 times [2022-10-17 10:58:04,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-10-17 10:58:04,961 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1646035240] [2022-10-17 10:58:04,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:58:04,961 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-10-17 10:58:04,961 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de13650-6abf-48de-a52c-736fb3f0fbb6/bin/uautomizer-J5u9QxTXDZ/mathsat [2022-10-17 10:58:04,963 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de13650-6abf-48de-a52c-736fb3f0fbb6/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-10-17 10:58:04,983 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de13650-6abf-48de-a52c-736fb3f0fbb6/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-10-17 10:58:05,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:58:05,036 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 4 conjunts are in the unsatisfiable core [2022-10-17 10:58:05,038 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:58:05,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:58:05,072 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 10:58:05,072 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-10-17 10:58:05,073 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1646035240] [2022-10-17 10:58:05,073 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1646035240] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:58:05,073 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:58:05,073 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-10-17 10:58:05,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210087028] [2022-10-17 10:58:05,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:58:05,077 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-17 10:58:05,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-10-17 10:58:05,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-17 10:58:05,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-10-17 10:58:05,083 INFO L87 Difference]: Start difference. First operand 69 states and 71 transitions. Second operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-10-17 10:58:05,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:58:05,130 INFO L93 Difference]: Finished difference Result 95 states and 99 transitions. [2022-10-17 10:58:05,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-17 10:58:05,132 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2022-10-17 10:58:05,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:58:05,135 INFO L225 Difference]: With dead ends: 95 [2022-10-17 10:58:05,135 INFO L226 Difference]: Without dead ends: 95 [2022-10-17 10:58:05,136 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-10-17 10:58:05,139 INFO L413 NwaCegarLoop]: 92 mSDtfsCounter, 21 mSDsluCounter, 245 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 337 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-17 10:58:05,139 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 337 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-17 10:58:05,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2022-10-17 10:58:05,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 73. [2022-10-17 10:58:05,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 40 states have (on average 1.65) internal successors, (66), 64 states have internal predecessors, (66), 4 states have call successors, (4), 4 states have call predecessors, (4), 5 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2022-10-17 10:58:05,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 75 transitions. [2022-10-17 10:58:05,149 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 75 transitions. Word has length 11 [2022-10-17 10:58:05,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:58:05,149 INFO L495 AbstractCegarLoop]: Abstraction has 73 states and 75 transitions. [2022-10-17 10:58:05,150 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-10-17 10:58:05,150 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 75 transitions. [2022-10-17 10:58:05,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-10-17 10:58:05,150 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:58:05,151 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:58:05,165 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de13650-6abf-48de-a52c-736fb3f0fbb6/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2022-10-17 10:58:05,367 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de13650-6abf-48de-a52c-736fb3f0fbb6/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 [2022-10-17 10:58:05,367 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-10-17 10:58:05,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:58:05,368 INFO L85 PathProgramCache]: Analyzing trace with hash -80457768, now seen corresponding path program 1 times [2022-10-17 10:58:05,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-10-17 10:58:05,369 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [822159522] [2022-10-17 10:58:05,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:58:05,369 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-10-17 10:58:05,369 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de13650-6abf-48de-a52c-736fb3f0fbb6/bin/uautomizer-J5u9QxTXDZ/mathsat [2022-10-17 10:58:05,370 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de13650-6abf-48de-a52c-736fb3f0fbb6/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-10-17 10:58:05,382 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de13650-6abf-48de-a52c-736fb3f0fbb6/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-10-17 10:58:05,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:58:05,450 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 7 conjunts are in the unsatisfiable core [2022-10-17 10:58:05,453 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:58:05,458 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-10-17 10:58:05,503 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:58:05,503 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 10:58:05,503 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-10-17 10:58:05,503 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [822159522] [2022-10-17 10:58:05,504 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [822159522] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:58:05,504 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:58:05,504 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-17 10:58:05,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013809207] [2022-10-17 10:58:05,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:58:05,505 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-17 10:58:05,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-10-17 10:58:05,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-17 10:58:05,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-10-17 10:58:05,506 INFO L87 Difference]: Start difference. First operand 73 states and 75 transitions. Second operand has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-10-17 10:58:05,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:58:05,875 INFO L93 Difference]: Finished difference Result 96 states and 103 transitions. [2022-10-17 10:58:05,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-17 10:58:05,877 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2022-10-17 10:58:05,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:58:05,878 INFO L225 Difference]: With dead ends: 96 [2022-10-17 10:58:05,879 INFO L226 Difference]: Without dead ends: 96 [2022-10-17 10:58:05,879 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-10-17 10:58:05,880 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 64 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 165 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-10-17 10:58:05,880 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 97 Invalid, 173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 165 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-10-17 10:58:05,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2022-10-17 10:58:05,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 76. [2022-10-17 10:58:05,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 42 states have (on average 1.6428571428571428) internal successors, (69), 66 states have internal predecessors, (69), 5 states have call successors, (5), 4 states have call predecessors, (5), 5 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2022-10-17 10:58:05,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 80 transitions. [2022-10-17 10:58:05,889 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 80 transitions. Word has length 11 [2022-10-17 10:58:05,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:58:05,889 INFO L495 AbstractCegarLoop]: Abstraction has 76 states and 80 transitions. [2022-10-17 10:58:05,889 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-10-17 10:58:05,889 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 80 transitions. [2022-10-17 10:58:05,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-10-17 10:58:05,890 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:58:05,890 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:58:05,905 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de13650-6abf-48de-a52c-736fb3f0fbb6/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-10-17 10:58:06,121 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de13650-6abf-48de-a52c-736fb3f0fbb6/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 [2022-10-17 10:58:06,122 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-10-17 10:58:06,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:58:06,122 INFO L85 PathProgramCache]: Analyzing trace with hash -80457767, now seen corresponding path program 1 times [2022-10-17 10:58:06,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-10-17 10:58:06,123 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2030011991] [2022-10-17 10:58:06,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:58:06,123 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-10-17 10:58:06,123 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de13650-6abf-48de-a52c-736fb3f0fbb6/bin/uautomizer-J5u9QxTXDZ/mathsat [2022-10-17 10:58:06,124 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de13650-6abf-48de-a52c-736fb3f0fbb6/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-10-17 10:58:06,137 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de13650-6abf-48de-a52c-736fb3f0fbb6/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-10-17 10:58:06,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:58:06,189 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 10 conjunts are in the unsatisfiable core [2022-10-17 10:58:06,191 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:58:06,201 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-10-17 10:58:06,283 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:58:06,283 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 10:58:06,283 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-10-17 10:58:06,284 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2030011991] [2022-10-17 10:58:06,284 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2030011991] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:58:06,284 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:58:06,284 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-17 10:58:06,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712435579] [2022-10-17 10:58:06,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:58:06,285 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-17 10:58:06,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-10-17 10:58:06,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-17 10:58:06,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-10-17 10:58:06,286 INFO L87 Difference]: Start difference. First operand 76 states and 80 transitions. Second operand has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-10-17 10:58:06,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:58:06,679 INFO L93 Difference]: Finished difference Result 93 states and 97 transitions. [2022-10-17 10:58:06,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-17 10:58:06,680 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2022-10-17 10:58:06,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:58:06,681 INFO L225 Difference]: With dead ends: 93 [2022-10-17 10:58:06,682 INFO L226 Difference]: Without dead ends: 93 [2022-10-17 10:58:06,682 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-10-17 10:58:06,683 INFO L413 NwaCegarLoop]: 49 mSDtfsCounter, 66 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-10-17 10:58:06,683 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 112 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 149 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-10-17 10:58:06,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2022-10-17 10:58:06,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 76. [2022-10-17 10:58:06,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 42 states have (on average 1.619047619047619) internal successors, (68), 66 states have internal predecessors, (68), 5 states have call successors, (5), 4 states have call predecessors, (5), 5 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2022-10-17 10:58:06,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 79 transitions. [2022-10-17 10:58:06,691 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 79 transitions. Word has length 11 [2022-10-17 10:58:06,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:58:06,691 INFO L495 AbstractCegarLoop]: Abstraction has 76 states and 79 transitions. [2022-10-17 10:58:06,691 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-10-17 10:58:06,691 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 79 transitions. [2022-10-17 10:58:06,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-10-17 10:58:06,696 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:58:06,696 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:58:06,711 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de13650-6abf-48de-a52c-736fb3f0fbb6/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-10-17 10:58:06,899 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de13650-6abf-48de-a52c-736fb3f0fbb6/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 [2022-10-17 10:58:06,900 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-10-17 10:58:06,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:58:06,900 INFO L85 PathProgramCache]: Analyzing trace with hash -390474800, now seen corresponding path program 1 times [2022-10-17 10:58:06,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-10-17 10:58:06,900 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [204750490] [2022-10-17 10:58:06,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:58:06,901 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-10-17 10:58:06,901 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de13650-6abf-48de-a52c-736fb3f0fbb6/bin/uautomizer-J5u9QxTXDZ/mathsat [2022-10-17 10:58:06,902 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de13650-6abf-48de-a52c-736fb3f0fbb6/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-10-17 10:58:06,914 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de13650-6abf-48de-a52c-736fb3f0fbb6/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-10-17 10:58:07,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:58:07,019 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 32 conjunts are in the unsatisfiable core [2022-10-17 10:58:07,023 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:58:07,043 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-10-17 10:58:07,051 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-10-17 10:58:07,096 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 7 treesize of output 5 [2022-10-17 10:58:07,103 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 5 treesize of output 3 [2022-10-17 10:58:09,356 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 10:58:09,357 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-10-17 10:58:09,377 INFO L356 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-10-17 10:58:09,378 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-10-17 10:58:09,611 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-10-17 10:58:09,617 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-10-17 10:58:09,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:58:09,737 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 10:58:09,737 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-10-17 10:58:09,738 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [204750490] [2022-10-17 10:58:09,738 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [204750490] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:58:09,738 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:58:09,738 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-10-17 10:58:09,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470128526] [2022-10-17 10:58:09,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:58:09,739 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-10-17 10:58:09,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-10-17 10:58:09,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-10-17 10:58:09,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=89, Unknown=1, NotChecked=0, Total=110 [2022-10-17 10:58:09,740 INFO L87 Difference]: Start difference. First operand 76 states and 79 transitions. Second operand has 11 states, 8 states have (on average 1.375) internal successors, (11), 9 states have internal predecessors, (11), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-10-17 10:58:10,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:58:10,459 INFO L93 Difference]: Finished difference Result 94 states and 97 transitions. [2022-10-17 10:58:10,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-10-17 10:58:10,460 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 8 states have (on average 1.375) internal successors, (11), 9 states have internal predecessors, (11), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2022-10-17 10:58:10,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:58:10,461 INFO L225 Difference]: With dead ends: 94 [2022-10-17 10:58:10,461 INFO L226 Difference]: Without dead ends: 94 [2022-10-17 10:58:10,462 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=34, Invalid=147, Unknown=1, NotChecked=0, Total=182 [2022-10-17 10:58:10,463 INFO L413 NwaCegarLoop]: 60 mSDtfsCounter, 30 mSDsluCounter, 285 mSDsCounter, 0 mSdLazyCounter, 196 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 345 SdHoareTripleChecker+Invalid, 311 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 113 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-10-17 10:58:10,463 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 345 Invalid, 311 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 196 Invalid, 0 Unknown, 113 Unchecked, 0.5s Time] [2022-10-17 10:58:10,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2022-10-17 10:58:10,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 86. [2022-10-17 10:58:10,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 50 states have (on average 1.66) internal successors, (83), 74 states have internal predecessors, (83), 6 states have call successors, (6), 6 states have call predecessors, (6), 6 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2022-10-17 10:58:10,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 96 transitions. [2022-10-17 10:58:10,470 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 96 transitions. Word has length 15 [2022-10-17 10:58:10,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:58:10,470 INFO L495 AbstractCegarLoop]: Abstraction has 86 states and 96 transitions. [2022-10-17 10:58:10,471 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 8 states have (on average 1.375) internal successors, (11), 9 states have internal predecessors, (11), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-10-17 10:58:10,471 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 96 transitions. [2022-10-17 10:58:10,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-10-17 10:58:10,471 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:58:10,472 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:58:10,487 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de13650-6abf-48de-a52c-736fb3f0fbb6/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-10-17 10:58:10,687 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de13650-6abf-48de-a52c-736fb3f0fbb6/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 [2022-10-17 10:58:10,688 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-10-17 10:58:10,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:58:10,688 INFO L85 PathProgramCache]: Analyzing trace with hash -390474801, now seen corresponding path program 1 times [2022-10-17 10:58:10,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-10-17 10:58:10,689 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [208853354] [2022-10-17 10:58:10,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:58:10,689 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-10-17 10:58:10,689 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de13650-6abf-48de-a52c-736fb3f0fbb6/bin/uautomizer-J5u9QxTXDZ/mathsat [2022-10-17 10:58:10,691 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de13650-6abf-48de-a52c-736fb3f0fbb6/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-10-17 10:58:10,729 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de13650-6abf-48de-a52c-736fb3f0fbb6/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-10-17 10:58:10,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:58:10,790 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 16 conjunts are in the unsatisfiable core [2022-10-17 10:58:10,792 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:58:10,904 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-10-17 10:58:10,959 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:58:10,959 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 10:58:10,959 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-10-17 10:58:10,959 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [208853354] [2022-10-17 10:58:10,959 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [208853354] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:58:10,959 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:58:10,959 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-10-17 10:58:10,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40968238] [2022-10-17 10:58:10,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:58:10,960 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-10-17 10:58:10,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-10-17 10:58:10,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-10-17 10:58:10,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-10-17 10:58:10,961 INFO L87 Difference]: Start difference. First operand 86 states and 96 transitions. Second operand has 9 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 7 states have internal predecessors, (11), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-10-17 10:58:11,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:58:11,331 INFO L93 Difference]: Finished difference Result 94 states and 104 transitions. [2022-10-17 10:58:11,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-10-17 10:58:11,332 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 7 states have internal predecessors, (11), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2022-10-17 10:58:11,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:58:11,333 INFO L225 Difference]: With dead ends: 94 [2022-10-17 10:58:11,333 INFO L226 Difference]: Without dead ends: 94 [2022-10-17 10:58:11,333 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2022-10-17 10:58:11,334 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 40 mSDsluCounter, 243 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 300 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 25 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-10-17 10:58:11,334 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 300 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 137 Invalid, 0 Unknown, 25 Unchecked, 0.3s Time] [2022-10-17 10:58:11,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2022-10-17 10:58:11,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 85. [2022-10-17 10:58:11,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 50 states have (on average 1.62) internal successors, (81), 73 states have internal predecessors, (81), 6 states have call successors, (6), 6 states have call predecessors, (6), 6 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2022-10-17 10:58:11,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 94 transitions. [2022-10-17 10:58:11,350 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 94 transitions. Word has length 15 [2022-10-17 10:58:11,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:58:11,351 INFO L495 AbstractCegarLoop]: Abstraction has 85 states and 94 transitions. [2022-10-17 10:58:11,351 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 7 states have internal predecessors, (11), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-10-17 10:58:11,351 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 94 transitions. [2022-10-17 10:58:11,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-10-17 10:58:11,352 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:58:11,353 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:58:11,371 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de13650-6abf-48de-a52c-736fb3f0fbb6/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-10-17 10:58:11,565 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de13650-6abf-48de-a52c-736fb3f0fbb6/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 [2022-10-17 10:58:11,565 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-10-17 10:58:11,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:58:11,566 INFO L85 PathProgramCache]: Analyzing trace with hash 2107541137, now seen corresponding path program 1 times [2022-10-17 10:58:11,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-10-17 10:58:11,567 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1662631677] [2022-10-17 10:58:11,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:58:11,567 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-10-17 10:58:11,567 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de13650-6abf-48de-a52c-736fb3f0fbb6/bin/uautomizer-J5u9QxTXDZ/mathsat [2022-10-17 10:58:11,568 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de13650-6abf-48de-a52c-736fb3f0fbb6/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-10-17 10:58:11,573 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de13650-6abf-48de-a52c-736fb3f0fbb6/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-10-17 10:58:11,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:58:11,646 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 7 conjunts are in the unsatisfiable core [2022-10-17 10:58:11,648 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:58:11,706 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:58:11,706 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 10:58:11,706 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-10-17 10:58:11,707 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1662631677] [2022-10-17 10:58:11,707 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1662631677] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:58:11,707 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:58:11,707 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-10-17 10:58:11,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321036782] [2022-10-17 10:58:11,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:58:11,708 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-17 10:58:11,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-10-17 10:58:11,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-17 10:58:11,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-10-17 10:58:11,709 INFO L87 Difference]: Start difference. First operand 85 states and 94 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-10-17 10:58:11,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:58:11,737 INFO L93 Difference]: Finished difference Result 90 states and 92 transitions. [2022-10-17 10:58:11,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-17 10:58:11,738 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2022-10-17 10:58:11,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:58:11,739 INFO L225 Difference]: With dead ends: 90 [2022-10-17 10:58:11,740 INFO L226 Difference]: Without dead ends: 90 [2022-10-17 10:58:11,740 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-10-17 10:58:11,741 INFO L413 NwaCegarLoop]: 71 mSDtfsCounter, 19 mSDsluCounter, 201 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 272 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-17 10:58:11,741 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 272 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-17 10:58:11,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2022-10-17 10:58:11,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 73. [2022-10-17 10:58:11,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 42 states have (on average 1.5476190476190477) internal successors, (65), 63 states have internal predecessors, (65), 4 states have call successors, (4), 4 states have call predecessors, (4), 5 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2022-10-17 10:58:11,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 74 transitions. [2022-10-17 10:58:11,746 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 74 transitions. Word has length 15 [2022-10-17 10:58:11,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:58:11,746 INFO L495 AbstractCegarLoop]: Abstraction has 73 states and 74 transitions. [2022-10-17 10:58:11,747 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-10-17 10:58:11,747 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 74 transitions. [2022-10-17 10:58:11,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-10-17 10:58:11,752 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:58:11,752 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:58:11,772 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de13650-6abf-48de-a52c-736fb3f0fbb6/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-10-17 10:58:11,972 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de13650-6abf-48de-a52c-736fb3f0fbb6/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 [2022-10-17 10:58:11,972 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __ldv_list_addErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-10-17 10:58:11,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:58:11,973 INFO L85 PathProgramCache]: Analyzing trace with hash 780183108, now seen corresponding path program 1 times [2022-10-17 10:58:11,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-10-17 10:58:11,973 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [325617297] [2022-10-17 10:58:11,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:58:11,974 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-10-17 10:58:11,974 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de13650-6abf-48de-a52c-736fb3f0fbb6/bin/uautomizer-J5u9QxTXDZ/mathsat [2022-10-17 10:58:11,974 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de13650-6abf-48de-a52c-736fb3f0fbb6/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-10-17 10:58:11,976 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de13650-6abf-48de-a52c-736fb3f0fbb6/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-10-17 10:58:12,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:58:12,068 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 9 conjunts are in the unsatisfiable core [2022-10-17 10:58:12,071 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:58:12,075 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-10-17 10:58:12,172 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:58:12,173 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 10:58:12,173 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-10-17 10:58:12,173 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [325617297] [2022-10-17 10:58:12,173 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [325617297] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:58:12,173 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:58:12,173 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-10-17 10:58:12,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571123452] [2022-10-17 10:58:12,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:58:12,174 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-10-17 10:58:12,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-10-17 10:58:12,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-10-17 10:58:12,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-10-17 10:58:12,175 INFO L87 Difference]: Start difference. First operand 73 states and 74 transitions. Second operand has 9 states, 8 states have (on average 1.5) internal successors, (12), 6 states have internal predecessors, (12), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-10-17 10:58:12,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:58:12,622 INFO L93 Difference]: Finished difference Result 81 states and 84 transitions. [2022-10-17 10:58:12,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-10-17 10:58:12,623 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 1.5) internal successors, (12), 6 states have internal predecessors, (12), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2022-10-17 10:58:12,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:58:12,623 INFO L225 Difference]: With dead ends: 81 [2022-10-17 10:58:12,624 INFO L226 Difference]: Without dead ends: 81 [2022-10-17 10:58:12,624 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-10-17 10:58:12,625 INFO L413 NwaCegarLoop]: 62 mSDtfsCounter, 36 mSDsluCounter, 255 mSDsCounter, 0 mSdLazyCounter, 283 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 317 SdHoareTripleChecker+Invalid, 286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 283 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-10-17 10:58:12,625 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 317 Invalid, 286 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 283 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-10-17 10:58:12,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2022-10-17 10:58:12,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 71. [2022-10-17 10:58:12,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 42 states have (on average 1.5) internal successors, (63), 61 states have internal predecessors, (63), 4 states have call successors, (4), 4 states have call predecessors, (4), 5 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2022-10-17 10:58:12,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 72 transitions. [2022-10-17 10:58:12,630 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 72 transitions. Word has length 16 [2022-10-17 10:58:12,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:58:12,631 INFO L495 AbstractCegarLoop]: Abstraction has 71 states and 72 transitions. [2022-10-17 10:58:12,631 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 1.5) internal successors, (12), 6 states have internal predecessors, (12), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-10-17 10:58:12,631 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 72 transitions. [2022-10-17 10:58:12,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-10-17 10:58:12,632 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:58:12,632 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:58:12,651 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de13650-6abf-48de-a52c-736fb3f0fbb6/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-10-17 10:58:12,851 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de13650-6abf-48de-a52c-736fb3f0fbb6/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 [2022-10-17 10:58:12,851 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __ldv_list_addErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-10-17 10:58:12,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:58:12,852 INFO L85 PathProgramCache]: Analyzing trace with hash 780183109, now seen corresponding path program 1 times [2022-10-17 10:58:12,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-10-17 10:58:12,852 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1041342415] [2022-10-17 10:58:12,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:58:12,852 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-10-17 10:58:12,852 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de13650-6abf-48de-a52c-736fb3f0fbb6/bin/uautomizer-J5u9QxTXDZ/mathsat [2022-10-17 10:58:12,853 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de13650-6abf-48de-a52c-736fb3f0fbb6/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-10-17 10:58:12,857 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de13650-6abf-48de-a52c-736fb3f0fbb6/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-10-17 10:58:12,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:58:12,944 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 18 conjunts are in the unsatisfiable core [2022-10-17 10:58:12,950 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:58:12,974 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-10-17 10:58:13,181 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:58:13,181 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 10:58:13,182 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-10-17 10:58:13,182 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1041342415] [2022-10-17 10:58:13,182 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1041342415] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:58:13,182 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:58:13,182 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-10-17 10:58:13,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43266208] [2022-10-17 10:58:13,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:58:13,183 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-10-17 10:58:13,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-10-17 10:58:13,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-10-17 10:58:13,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-10-17 10:58:13,184 INFO L87 Difference]: Start difference. First operand 71 states and 72 transitions. Second operand has 10 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 7 states have internal predecessors, (12), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-10-17 10:58:13,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:58:13,791 INFO L93 Difference]: Finished difference Result 86 states and 88 transitions. [2022-10-17 10:58:13,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-10-17 10:58:13,792 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 7 states have internal predecessors, (12), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2022-10-17 10:58:13,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:58:13,793 INFO L225 Difference]: With dead ends: 86 [2022-10-17 10:58:13,793 INFO L226 Difference]: Without dead ends: 86 [2022-10-17 10:58:13,794 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2022-10-17 10:58:13,794 INFO L413 NwaCegarLoop]: 67 mSDtfsCounter, 44 mSDsluCounter, 383 mSDsCounter, 0 mSdLazyCounter, 259 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 450 SdHoareTripleChecker+Invalid, 262 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 259 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-10-17 10:58:13,795 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 450 Invalid, 262 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 259 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-10-17 10:58:13,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2022-10-17 10:58:13,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 69. [2022-10-17 10:58:13,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 42 states have (on average 1.4523809523809523) internal successors, (61), 59 states have internal predecessors, (61), 4 states have call successors, (4), 4 states have call predecessors, (4), 5 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2022-10-17 10:58:13,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 70 transitions. [2022-10-17 10:58:13,799 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 70 transitions. Word has length 16 [2022-10-17 10:58:13,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:58:13,800 INFO L495 AbstractCegarLoop]: Abstraction has 69 states and 70 transitions. [2022-10-17 10:58:13,800 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 7 states have internal predecessors, (12), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-10-17 10:58:13,800 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 70 transitions. [2022-10-17 10:58:13,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-10-17 10:58:13,809 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:58:13,810 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:58:13,825 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de13650-6abf-48de-a52c-736fb3f0fbb6/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-10-17 10:58:14,020 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de13650-6abf-48de-a52c-736fb3f0fbb6/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 [2022-10-17 10:58:14,021 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_list_delErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-10-17 10:58:14,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:58:14,021 INFO L85 PathProgramCache]: Analyzing trace with hash 615640452, now seen corresponding path program 1 times [2022-10-17 10:58:14,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-10-17 10:58:14,022 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1401340000] [2022-10-17 10:58:14,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:58:14,022 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-10-17 10:58:14,022 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de13650-6abf-48de-a52c-736fb3f0fbb6/bin/uautomizer-J5u9QxTXDZ/mathsat [2022-10-17 10:58:14,023 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de13650-6abf-48de-a52c-736fb3f0fbb6/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-10-17 10:58:14,055 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de13650-6abf-48de-a52c-736fb3f0fbb6/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-10-17 10:58:14,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:58:14,094 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 14 conjunts are in the unsatisfiable core [2022-10-17 10:58:14,095 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:58:14,245 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-10-17 10:58:14,245 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 15 treesize of output 10 [2022-10-17 10:58:14,255 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-10-17 10:58:14,256 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 15 treesize of output 10 [2022-10-17 10:58:14,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:58:14,312 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 10:58:14,312 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-10-17 10:58:14,312 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1401340000] [2022-10-17 10:58:14,313 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1401340000] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:58:14,313 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:58:14,313 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-10-17 10:58:14,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018756193] [2022-10-17 10:58:14,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:58:14,314 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-17 10:58:14,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-10-17 10:58:14,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-17 10:58:14,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-10-17 10:58:14,315 INFO L87 Difference]: Start difference. First operand 69 states and 70 transitions. Second operand has 7 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 7 states have internal predecessors, (13), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-10-17 10:58:14,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:58:14,466 INFO L93 Difference]: Finished difference Result 75 states and 75 transitions. [2022-10-17 10:58:14,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-10-17 10:58:14,467 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 7 states have internal predecessors, (13), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2022-10-17 10:58:14,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:58:14,467 INFO L225 Difference]: With dead ends: 75 [2022-10-17 10:58:14,468 INFO L226 Difference]: Without dead ends: 75 [2022-10-17 10:58:14,468 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2022-10-17 10:58:14,469 INFO L413 NwaCegarLoop]: 60 mSDtfsCounter, 14 mSDsluCounter, 155 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 215 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 17 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-17 10:58:14,469 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 215 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 17 Unchecked, 0.1s Time] [2022-10-17 10:58:14,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2022-10-17 10:58:14,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 71. [2022-10-17 10:58:14,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 44 states have (on average 1.4318181818181819) internal successors, (63), 61 states have internal predecessors, (63), 4 states have call successors, (4), 4 states have call predecessors, (4), 5 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2022-10-17 10:58:14,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 72 transitions. [2022-10-17 10:58:14,472 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 72 transitions. Word has length 16 [2022-10-17 10:58:14,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:58:14,473 INFO L495 AbstractCegarLoop]: Abstraction has 71 states and 72 transitions. [2022-10-17 10:58:14,473 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 7 states have internal predecessors, (13), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-10-17 10:58:14,473 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 72 transitions. [2022-10-17 10:58:14,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-10-17 10:58:14,474 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:58:14,474 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:58:14,488 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de13650-6abf-48de-a52c-736fb3f0fbb6/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2022-10-17 10:58:14,674 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de13650-6abf-48de-a52c-736fb3f0fbb6/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 [2022-10-17 10:58:14,674 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __ldv_list_addErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-10-17 10:58:14,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:58:14,675 INFO L85 PathProgramCache]: Analyzing trace with hash -1863308281, now seen corresponding path program 1 times [2022-10-17 10:58:14,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-10-17 10:58:14,675 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [545724901] [2022-10-17 10:58:14,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:58:14,676 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-10-17 10:58:14,676 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de13650-6abf-48de-a52c-736fb3f0fbb6/bin/uautomizer-J5u9QxTXDZ/mathsat [2022-10-17 10:58:14,677 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de13650-6abf-48de-a52c-736fb3f0fbb6/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-10-17 10:58:14,709 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de13650-6abf-48de-a52c-736fb3f0fbb6/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-10-17 10:58:14,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:58:14,768 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 4 conjunts are in the unsatisfiable core [2022-10-17 10:58:14,769 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:58:14,808 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:58:14,808 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 10:58:14,808 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-10-17 10:58:14,808 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [545724901] [2022-10-17 10:58:14,809 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [545724901] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:58:14,809 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:58:14,809 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-17 10:58:14,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294291674] [2022-10-17 10:58:14,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:58:14,810 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-17 10:58:14,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-10-17 10:58:14,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-17 10:58:14,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-10-17 10:58:14,811 INFO L87 Difference]: Start difference. First operand 71 states and 72 transitions. Second operand has 5 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-10-17 10:58:14,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:58:14,985 INFO L93 Difference]: Finished difference Result 70 states and 71 transitions. [2022-10-17 10:58:14,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-17 10:58:14,987 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 18 [2022-10-17 10:58:14,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:58:14,988 INFO L225 Difference]: With dead ends: 70 [2022-10-17 10:58:14,988 INFO L226 Difference]: Without dead ends: 70 [2022-10-17 10:58:14,988 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-10-17 10:58:14,989 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 12 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-10-17 10:58:14,989 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 157 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-10-17 10:58:14,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2022-10-17 10:58:14,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2022-10-17 10:58:14,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 44 states have (on average 1.4090909090909092) internal successors, (62), 60 states have internal predecessors, (62), 4 states have call successors, (4), 4 states have call predecessors, (4), 5 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2022-10-17 10:58:14,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 71 transitions. [2022-10-17 10:58:14,992 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 71 transitions. Word has length 18 [2022-10-17 10:58:14,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:58:14,993 INFO L495 AbstractCegarLoop]: Abstraction has 70 states and 71 transitions. [2022-10-17 10:58:14,993 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-10-17 10:58:14,993 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 71 transitions. [2022-10-17 10:58:14,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-10-17 10:58:14,994 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:58:14,994 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:58:15,008 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de13650-6abf-48de-a52c-736fb3f0fbb6/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2022-10-17 10:58:15,204 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de13650-6abf-48de-a52c-736fb3f0fbb6/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 [2022-10-17 10:58:15,204 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __ldv_list_addErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-10-17 10:58:15,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:58:15,204 INFO L85 PathProgramCache]: Analyzing trace with hash -1863308280, now seen corresponding path program 1 times [2022-10-17 10:58:15,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-10-17 10:58:15,205 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1627314112] [2022-10-17 10:58:15,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:58:15,205 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-10-17 10:58:15,205 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de13650-6abf-48de-a52c-736fb3f0fbb6/bin/uautomizer-J5u9QxTXDZ/mathsat [2022-10-17 10:58:15,206 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de13650-6abf-48de-a52c-736fb3f0fbb6/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-10-17 10:58:15,239 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de13650-6abf-48de-a52c-736fb3f0fbb6/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2022-10-17 10:58:15,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:58:15,313 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 11 conjunts are in the unsatisfiable core [2022-10-17 10:58:15,315 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:58:15,488 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:58:15,488 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 10:58:15,488 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-10-17 10:58:15,488 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1627314112] [2022-10-17 10:58:15,488 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1627314112] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:58:15,488 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:58:15,489 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-10-17 10:58:15,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213801250] [2022-10-17 10:58:15,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:58:15,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-10-17 10:58:15,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-10-17 10:58:15,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-10-17 10:58:15,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-10-17 10:58:15,490 INFO L87 Difference]: Start difference. First operand 70 states and 71 transitions. Second operand has 8 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-10-17 10:58:15,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:58:15,791 INFO L93 Difference]: Finished difference Result 69 states and 70 transitions. [2022-10-17 10:58:15,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-10-17 10:58:15,792 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 18 [2022-10-17 10:58:15,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:58:15,793 INFO L225 Difference]: With dead ends: 69 [2022-10-17 10:58:15,793 INFO L226 Difference]: Without dead ends: 69 [2022-10-17 10:58:15,793 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2022-10-17 10:58:15,794 INFO L413 NwaCegarLoop]: 54 mSDtfsCounter, 38 mSDsluCounter, 198 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 252 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-10-17 10:58:15,795 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 252 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-10-17 10:58:15,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2022-10-17 10:58:15,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2022-10-17 10:58:15,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 44 states have (on average 1.3863636363636365) internal successors, (61), 59 states have internal predecessors, (61), 4 states have call successors, (4), 4 states have call predecessors, (4), 5 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2022-10-17 10:58:15,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 70 transitions. [2022-10-17 10:58:15,798 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 70 transitions. Word has length 18 [2022-10-17 10:58:15,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:58:15,799 INFO L495 AbstractCegarLoop]: Abstraction has 69 states and 70 transitions. [2022-10-17 10:58:15,799 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-10-17 10:58:15,799 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 70 transitions. [2022-10-17 10:58:15,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-10-17 10:58:15,800 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:58:15,800 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:58:15,815 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de13650-6abf-48de-a52c-736fb3f0fbb6/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2022-10-17 10:58:16,011 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de13650-6abf-48de-a52c-736fb3f0fbb6/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 [2022-10-17 10:58:16,011 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-10-17 10:58:16,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:58:16,012 INFO L85 PathProgramCache]: Analyzing trace with hash 615538426, now seen corresponding path program 1 times [2022-10-17 10:58:16,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-10-17 10:58:16,012 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2089744753] [2022-10-17 10:58:16,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:58:16,012 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-10-17 10:58:16,013 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de13650-6abf-48de-a52c-736fb3f0fbb6/bin/uautomizer-J5u9QxTXDZ/mathsat [2022-10-17 10:58:16,019 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de13650-6abf-48de-a52c-736fb3f0fbb6/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-10-17 10:58:16,021 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de13650-6abf-48de-a52c-736fb3f0fbb6/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2022-10-17 10:58:16,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:58:16,085 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 8 conjunts are in the unsatisfiable core [2022-10-17 10:58:16,087 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:58:16,209 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:58:16,209 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 10:58:16,209 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-10-17 10:58:16,209 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2089744753] [2022-10-17 10:58:16,209 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2089744753] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:58:16,210 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:58:16,210 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-17 10:58:16,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140710203] [2022-10-17 10:58:16,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:58:16,210 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-17 10:58:16,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-10-17 10:58:16,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-17 10:58:16,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-10-17 10:58:16,211 INFO L87 Difference]: Start difference. First operand 69 states and 70 transitions. Second operand has 5 states, 4 states have (on average 3.5) internal successors, (14), 5 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-10-17 10:58:16,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:58:16,308 INFO L93 Difference]: Finished difference Result 72 states and 72 transitions. [2022-10-17 10:58:16,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-17 10:58:16,309 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 5 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2022-10-17 10:58:16,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:58:16,310 INFO L225 Difference]: With dead ends: 72 [2022-10-17 10:58:16,310 INFO L226 Difference]: Without dead ends: 61 [2022-10-17 10:58:16,310 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-10-17 10:58:16,311 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 26 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 86 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-17 10:58:16,311 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 104 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 26 Invalid, 0 Unknown, 86 Unchecked, 0.1s Time] [2022-10-17 10:58:16,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2022-10-17 10:58:16,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2022-10-17 10:58:16,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 37 states have (on average 1.4324324324324325) internal successors, (53), 52 states have internal predecessors, (53), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-10-17 10:58:16,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 61 transitions. [2022-10-17 10:58:16,314 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 61 transitions. Word has length 16 [2022-10-17 10:58:16,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:58:16,314 INFO L495 AbstractCegarLoop]: Abstraction has 61 states and 61 transitions. [2022-10-17 10:58:16,314 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 5 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-10-17 10:58:16,315 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 61 transitions. [2022-10-17 10:58:16,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-10-17 10:58:16,315 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:58:16,315 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:58:16,332 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de13650-6abf-48de-a52c-736fb3f0fbb6/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (15)] Ended with exit code 0 [2022-10-17 10:58:16,525 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de13650-6abf-48de-a52c-736fb3f0fbb6/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 [2022-10-17 10:58:16,525 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-10-17 10:58:16,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:58:16,525 INFO L85 PathProgramCache]: Analyzing trace with hash -632903047, now seen corresponding path program 1 times [2022-10-17 10:58:16,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-10-17 10:58:16,526 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1539467375] [2022-10-17 10:58:16,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:58:16,526 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-10-17 10:58:16,526 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de13650-6abf-48de-a52c-736fb3f0fbb6/bin/uautomizer-J5u9QxTXDZ/mathsat [2022-10-17 10:58:16,527 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de13650-6abf-48de-a52c-736fb3f0fbb6/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-10-17 10:58:16,530 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de13650-6abf-48de-a52c-736fb3f0fbb6/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2022-10-17 10:58:16,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:58:16,631 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 8 conjunts are in the unsatisfiable core [2022-10-17 10:58:16,633 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:58:16,771 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:58:16,771 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 10:58:16,771 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-10-17 10:58:16,771 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1539467375] [2022-10-17 10:58:16,771 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1539467375] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:58:16,772 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:58:16,772 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-10-17 10:58:16,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350193301] [2022-10-17 10:58:16,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:58:16,772 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-10-17 10:58:16,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-10-17 10:58:16,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-10-17 10:58:16,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-10-17 10:58:16,773 INFO L87 Difference]: Start difference. First operand 61 states and 61 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 2 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-10-17 10:58:16,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:58:16,996 INFO L93 Difference]: Finished difference Result 69 states and 71 transitions. [2022-10-17 10:58:16,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-10-17 10:58:16,997 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 2 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 25 [2022-10-17 10:58:16,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:58:16,998 INFO L225 Difference]: With dead ends: 69 [2022-10-17 10:58:16,998 INFO L226 Difference]: Without dead ends: 69 [2022-10-17 10:58:16,999 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-10-17 10:58:16,999 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 47 mSDsluCounter, 155 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 201 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 26 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-10-17 10:58:17,000 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 201 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 82 Invalid, 0 Unknown, 26 Unchecked, 0.2s Time] [2022-10-17 10:58:17,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2022-10-17 10:58:17,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 60. [2022-10-17 10:58:17,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 37 states have (on average 1.4054054054054055) internal successors, (52), 51 states have internal predecessors, (52), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-10-17 10:58:17,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 60 transitions. [2022-10-17 10:58:17,004 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 60 transitions. Word has length 25 [2022-10-17 10:58:17,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:58:17,004 INFO L495 AbstractCegarLoop]: Abstraction has 60 states and 60 transitions. [2022-10-17 10:58:17,004 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 2 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-10-17 10:58:17,005 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 60 transitions. [2022-10-17 10:58:17,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-10-17 10:58:17,005 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:58:17,006 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:58:17,018 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de13650-6abf-48de-a52c-736fb3f0fbb6/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2022-10-17 10:58:17,217 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de13650-6abf-48de-a52c-736fb3f0fbb6/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 [2022-10-17 10:58:17,218 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-10-17 10:58:17,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:58:17,218 INFO L85 PathProgramCache]: Analyzing trace with hash -632903046, now seen corresponding path program 1 times [2022-10-17 10:58:17,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-10-17 10:58:17,219 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [239778956] [2022-10-17 10:58:17,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:58:17,219 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-10-17 10:58:17,219 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de13650-6abf-48de-a52c-736fb3f0fbb6/bin/uautomizer-J5u9QxTXDZ/mathsat [2022-10-17 10:58:17,220 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de13650-6abf-48de-a52c-736fb3f0fbb6/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-10-17 10:58:17,266 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de13650-6abf-48de-a52c-736fb3f0fbb6/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2022-10-17 10:58:17,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:58:17,364 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 15 conjunts are in the unsatisfiable core [2022-10-17 10:58:17,366 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:58:17,537 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:58:17,537 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 10:58:17,538 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-10-17 10:58:17,538 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [239778956] [2022-10-17 10:58:17,538 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [239778956] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:58:17,538 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:58:17,538 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-10-17 10:58:17,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623437904] [2022-10-17 10:58:17,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:58:17,539 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-17 10:58:17,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-10-17 10:58:17,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-17 10:58:17,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-10-17 10:58:17,540 INFO L87 Difference]: Start difference. First operand 60 states and 60 transitions. Second operand has 7 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-10-17 10:58:17,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:58:17,942 INFO L93 Difference]: Finished difference Result 59 states and 59 transitions. [2022-10-17 10:58:17,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-10-17 10:58:17,944 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 25 [2022-10-17 10:58:17,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:58:17,944 INFO L225 Difference]: With dead ends: 59 [2022-10-17 10:58:17,945 INFO L226 Difference]: Without dead ends: 59 [2022-10-17 10:58:17,945 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2022-10-17 10:58:17,946 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 49 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 191 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-10-17 10:58:17,946 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 191 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-10-17 10:58:17,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2022-10-17 10:58:17,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2022-10-17 10:58:17,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 37 states have (on average 1.3783783783783783) internal successors, (51), 50 states have internal predecessors, (51), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-10-17 10:58:17,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 59 transitions. [2022-10-17 10:58:17,949 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 59 transitions. Word has length 25 [2022-10-17 10:58:17,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:58:17,950 INFO L495 AbstractCegarLoop]: Abstraction has 59 states and 59 transitions. [2022-10-17 10:58:17,950 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-10-17 10:58:17,950 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 59 transitions. [2022-10-17 10:58:17,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-10-17 10:58:17,951 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:58:17,951 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:58:17,963 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de13650-6abf-48de-a52c-736fb3f0fbb6/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2022-10-17 10:58:18,160 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de13650-6abf-48de-a52c-736fb3f0fbb6/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 [2022-10-17 10:58:18,160 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_list_delErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-10-17 10:58:18,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:58:18,161 INFO L85 PathProgramCache]: Analyzing trace with hash -2017194109, now seen corresponding path program 1 times [2022-10-17 10:58:18,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-10-17 10:58:18,162 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1129739919] [2022-10-17 10:58:18,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:58:18,162 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-10-17 10:58:18,162 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de13650-6abf-48de-a52c-736fb3f0fbb6/bin/uautomizer-J5u9QxTXDZ/mathsat [2022-10-17 10:58:18,163 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de13650-6abf-48de-a52c-736fb3f0fbb6/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-10-17 10:58:18,164 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de13650-6abf-48de-a52c-736fb3f0fbb6/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2022-10-17 10:58:18,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:58:18,271 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 33 conjunts are in the unsatisfiable core [2022-10-17 10:58:18,273 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:58:18,307 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-10-17 10:58:18,596 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-10-17 10:58:18,830 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-10-17 10:58:18,966 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:58:18,966 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 10:58:18,967 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-10-17 10:58:18,967 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1129739919] [2022-10-17 10:58:18,967 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1129739919] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:58:18,967 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:58:18,967 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-10-17 10:58:18,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142973464] [2022-10-17 10:58:18,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:58:18,969 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-10-17 10:58:18,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-10-17 10:58:18,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-10-17 10:58:18,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=226, Unknown=0, NotChecked=0, Total=272 [2022-10-17 10:58:18,970 INFO L87 Difference]: Start difference. First operand 59 states and 59 transitions. Second operand has 17 states, 15 states have (on average 1.5333333333333334) internal successors, (23), 13 states have internal predecessors, (23), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-10-17 10:58:19,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:58:19,243 INFO L93 Difference]: Finished difference Result 77 states and 78 transitions. [2022-10-17 10:58:19,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-10-17 10:58:19,244 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 15 states have (on average 1.5333333333333334) internal successors, (23), 13 states have internal predecessors, (23), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 30 [2022-10-17 10:58:19,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:58:19,244 INFO L225 Difference]: With dead ends: 77 [2022-10-17 10:58:19,245 INFO L226 Difference]: Without dead ends: 77 [2022-10-17 10:58:19,245 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=63, Invalid=317, Unknown=0, NotChecked=0, Total=380 [2022-10-17 10:58:19,246 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 57 mSDsluCounter, 170 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 205 SdHoareTripleChecker+Invalid, 246 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 127 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-10-17 10:58:19,246 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 205 Invalid, 246 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 117 Invalid, 0 Unknown, 127 Unchecked, 0.2s Time] [2022-10-17 10:58:19,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2022-10-17 10:58:19,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 70. [2022-10-17 10:58:19,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 46 states have (on average 1.4565217391304348) internal successors, (67), 60 states have internal predecessors, (67), 5 states have call successors, (5), 5 states have call predecessors, (5), 5 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2022-10-17 10:58:19,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 77 transitions. [2022-10-17 10:58:19,250 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 77 transitions. Word has length 30 [2022-10-17 10:58:19,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:58:19,251 INFO L495 AbstractCegarLoop]: Abstraction has 70 states and 77 transitions. [2022-10-17 10:58:19,251 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 15 states have (on average 1.5333333333333334) internal successors, (23), 13 states have internal predecessors, (23), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-10-17 10:58:19,251 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 77 transitions. [2022-10-17 10:58:19,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-10-17 10:58:19,252 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:58:19,252 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:58:19,265 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de13650-6abf-48de-a52c-736fb3f0fbb6/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2022-10-17 10:58:19,464 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de13650-6abf-48de-a52c-736fb3f0fbb6/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 [2022-10-17 10:58:19,464 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_list_delErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-10-17 10:58:19,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:58:19,465 INFO L85 PathProgramCache]: Analyzing trace with hash -2017194108, now seen corresponding path program 1 times [2022-10-17 10:58:19,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-10-17 10:58:19,465 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1583366600] [2022-10-17 10:58:19,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:58:19,466 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-10-17 10:58:19,466 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de13650-6abf-48de-a52c-736fb3f0fbb6/bin/uautomizer-J5u9QxTXDZ/mathsat [2022-10-17 10:58:19,467 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de13650-6abf-48de-a52c-736fb3f0fbb6/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-10-17 10:58:19,482 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de13650-6abf-48de-a52c-736fb3f0fbb6/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2022-10-17 10:58:19,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:58:19,611 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 50 conjunts are in the unsatisfiable core [2022-10-17 10:58:19,616 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:58:19,648 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-10-17 10:58:20,047 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-10-17 10:58:20,060 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-10-17 10:58:20,374 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-10-17 10:58:20,377 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-10-17 10:58:20,590 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:58:20,590 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 10:58:20,590 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-10-17 10:58:20,591 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1583366600] [2022-10-17 10:58:20,591 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1583366600] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:58:20,591 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:58:20,591 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-10-17 10:58:20,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820306642] [2022-10-17 10:58:20,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:58:20,592 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-10-17 10:58:20,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-10-17 10:58:20,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-10-17 10:58:20,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=259, Unknown=0, NotChecked=0, Total=306 [2022-10-17 10:58:20,593 INFO L87 Difference]: Start difference. First operand 70 states and 77 transitions. Second operand has 18 states, 16 states have (on average 1.4375) internal successors, (23), 14 states have internal predecessors, (23), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-10-17 10:58:21,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:58:21,273 INFO L93 Difference]: Finished difference Result 92 states and 93 transitions. [2022-10-17 10:58:21,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-10-17 10:58:21,274 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 16 states have (on average 1.4375) internal successors, (23), 14 states have internal predecessors, (23), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 30 [2022-10-17 10:58:21,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:58:21,275 INFO L225 Difference]: With dead ends: 92 [2022-10-17 10:58:21,275 INFO L226 Difference]: Without dead ends: 92 [2022-10-17 10:58:21,276 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=68, Invalid=394, Unknown=0, NotChecked=0, Total=462 [2022-10-17 10:58:21,276 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 55 mSDsluCounter, 287 mSDsCounter, 0 mSdLazyCounter, 317 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 317 SdHoareTripleChecker+Invalid, 477 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 317 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 157 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-10-17 10:58:21,277 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 317 Invalid, 477 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 317 Invalid, 0 Unknown, 157 Unchecked, 0.5s Time] [2022-10-17 10:58:21,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2022-10-17 10:58:21,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 74. [2022-10-17 10:58:21,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 50 states have (on average 1.44) internal successors, (72), 63 states have internal predecessors, (72), 5 states have call successors, (5), 5 states have call predecessors, (5), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-10-17 10:58:21,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 82 transitions. [2022-10-17 10:58:21,281 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 82 transitions. Word has length 30 [2022-10-17 10:58:21,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:58:21,281 INFO L495 AbstractCegarLoop]: Abstraction has 74 states and 82 transitions. [2022-10-17 10:58:21,281 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 16 states have (on average 1.4375) internal successors, (23), 14 states have internal predecessors, (23), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-10-17 10:58:21,281 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 82 transitions. [2022-10-17 10:58:21,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-10-17 10:58:21,282 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:58:21,282 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:58:21,297 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de13650-6abf-48de-a52c-736fb3f0fbb6/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2022-10-17 10:58:21,494 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de13650-6abf-48de-a52c-736fb3f0fbb6/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 [2022-10-17 10:58:21,494 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-10-17 10:58:21,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:58:21,495 INFO L85 PathProgramCache]: Analyzing trace with hash -2017296135, now seen corresponding path program 1 times [2022-10-17 10:58:21,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-10-17 10:58:21,495 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1805516587] [2022-10-17 10:58:21,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:58:21,495 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-10-17 10:58:21,495 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de13650-6abf-48de-a52c-736fb3f0fbb6/bin/uautomizer-J5u9QxTXDZ/mathsat [2022-10-17 10:58:21,496 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de13650-6abf-48de-a52c-736fb3f0fbb6/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-10-17 10:58:21,500 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de13650-6abf-48de-a52c-736fb3f0fbb6/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2022-10-17 10:58:21,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:58:21,649 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 31 conjunts are in the unsatisfiable core [2022-10-17 10:58:21,652 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:58:21,892 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-10-17 10:58:22,039 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-10-17 10:58:22,039 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 15 treesize of output 10 [2022-10-17 10:58:22,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:58:22,104 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 10:58:22,104 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-10-17 10:58:22,104 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1805516587] [2022-10-17 10:58:22,104 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1805516587] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:58:22,104 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:58:22,104 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-10-17 10:58:22,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921242229] [2022-10-17 10:58:22,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:58:22,105 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-10-17 10:58:22,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-10-17 10:58:22,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-10-17 10:58:22,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2022-10-17 10:58:22,106 INFO L87 Difference]: Start difference. First operand 74 states and 82 transitions. Second operand has 14 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 12 states have internal predecessors, (24), 3 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-10-17 10:58:22,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:58:22,724 INFO L93 Difference]: Finished difference Result 78 states and 82 transitions. [2022-10-17 10:58:22,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-10-17 10:58:22,725 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 12 states have internal predecessors, (24), 3 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 30 [2022-10-17 10:58:22,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:58:22,726 INFO L225 Difference]: With dead ends: 78 [2022-10-17 10:58:22,726 INFO L226 Difference]: Without dead ends: 78 [2022-10-17 10:58:22,726 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=71, Invalid=349, Unknown=0, NotChecked=0, Total=420 [2022-10-17 10:58:22,727 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 64 mSDsluCounter, 386 mSDsCounter, 0 mSdLazyCounter, 241 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 430 SdHoareTripleChecker+Invalid, 251 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 241 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-10-17 10:58:22,727 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 430 Invalid, 251 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 241 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-10-17 10:58:22,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2022-10-17 10:58:22,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 74. [2022-10-17 10:58:22,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 50 states have (on average 1.42) internal successors, (71), 63 states have internal predecessors, (71), 5 states have call successors, (5), 5 states have call predecessors, (5), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-10-17 10:58:22,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 81 transitions. [2022-10-17 10:58:22,731 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 81 transitions. Word has length 30 [2022-10-17 10:58:22,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:58:22,731 INFO L495 AbstractCegarLoop]: Abstraction has 74 states and 81 transitions. [2022-10-17 10:58:22,732 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 12 states have internal predecessors, (24), 3 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-10-17 10:58:22,732 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 81 transitions. [2022-10-17 10:58:22,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-10-17 10:58:22,733 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:58:22,733 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:58:22,759 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de13650-6abf-48de-a52c-736fb3f0fbb6/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (20)] Ended with exit code 0 [2022-10-17 10:58:22,945 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de13650-6abf-48de-a52c-736fb3f0fbb6/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 [2022-10-17 10:58:22,945 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ldv_list_delErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-10-17 10:58:22,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:58:22,945 INFO L85 PathProgramCache]: Analyzing trace with hash 952738272, now seen corresponding path program 1 times [2022-10-17 10:58:22,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-10-17 10:58:22,946 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1474275838] [2022-10-17 10:58:22,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:58:22,946 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-10-17 10:58:22,946 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de13650-6abf-48de-a52c-736fb3f0fbb6/bin/uautomizer-J5u9QxTXDZ/mathsat [2022-10-17 10:58:22,947 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de13650-6abf-48de-a52c-736fb3f0fbb6/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-10-17 10:58:22,953 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de13650-6abf-48de-a52c-736fb3f0fbb6/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2022-10-17 10:58:23,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:58:23,124 INFO L263 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 62 conjunts are in the unsatisfiable core [2022-10-17 10:58:23,128 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:58:23,167 INFO L356 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-10-17 10:58:23,168 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 22 [2022-10-17 10:58:23,237 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-10-17 10:58:23,238 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 17 treesize of output 23 [2022-10-17 10:58:23,394 INFO L356 Elim1Store]: treesize reduction 16, result has 48.4 percent of original size [2022-10-17 10:58:23,394 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 22 treesize of output 30 [2022-10-17 10:58:23,791 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-10-17 10:58:23,876 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 21 treesize of output 20 [2022-10-17 10:58:23,947 INFO L356 Elim1Store]: treesize reduction 17, result has 46.9 percent of original size [2022-10-17 10:58:23,947 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 19 treesize of output 26 [2022-10-17 10:58:23,954 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-10-17 10:58:24,299 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 27 treesize of output 19 [2022-10-17 10:58:24,470 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 23 treesize of output 15 [2022-10-17 10:58:24,947 INFO L356 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-10-17 10:58:24,948 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 14 [2022-10-17 10:58:25,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:58:25,088 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 10:58:25,089 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-10-17 10:58:25,089 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1474275838] [2022-10-17 10:58:25,089 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1474275838] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:58:25,089 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:58:25,089 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-10-17 10:58:25,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184576353] [2022-10-17 10:58:25,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:58:25,090 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-10-17 10:58:25,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-10-17 10:58:25,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-10-17 10:58:25,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=492, Unknown=0, NotChecked=0, Total=552 [2022-10-17 10:58:25,091 INFO L87 Difference]: Start difference. First operand 74 states and 81 transitions. Second operand has 24 states, 21 states have (on average 1.2380952380952381) internal successors, (26), 18 states have internal predecessors, (26), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-10-17 10:58:25,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:58:25,951 INFO L93 Difference]: Finished difference Result 77 states and 80 transitions. [2022-10-17 10:58:25,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-10-17 10:58:25,952 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 21 states have (on average 1.2380952380952381) internal successors, (26), 18 states have internal predecessors, (26), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 33 [2022-10-17 10:58:25,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:58:25,952 INFO L225 Difference]: With dead ends: 77 [2022-10-17 10:58:25,952 INFO L226 Difference]: Without dead ends: 77 [2022-10-17 10:58:25,953 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=104, Invalid=888, Unknown=0, NotChecked=0, Total=992 [2022-10-17 10:58:25,954 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 45 mSDsluCounter, 339 mSDsCounter, 0 mSdLazyCounter, 184 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 377 SdHoareTripleChecker+Invalid, 487 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 184 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 298 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-10-17 10:58:25,954 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 377 Invalid, 487 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 184 Invalid, 0 Unknown, 298 Unchecked, 0.4s Time] [2022-10-17 10:58:25,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2022-10-17 10:58:25,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 74. [2022-10-17 10:58:25,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 50 states have (on average 1.4) internal successors, (70), 63 states have internal predecessors, (70), 5 states have call successors, (5), 5 states have call predecessors, (5), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-10-17 10:58:25,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 80 transitions. [2022-10-17 10:58:25,958 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 80 transitions. Word has length 33 [2022-10-17 10:58:25,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:58:25,959 INFO L495 AbstractCegarLoop]: Abstraction has 74 states and 80 transitions. [2022-10-17 10:58:25,959 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 21 states have (on average 1.2380952380952381) internal successors, (26), 18 states have internal predecessors, (26), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-10-17 10:58:25,959 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 80 transitions. [2022-10-17 10:58:25,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-10-17 10:58:25,960 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:58:25,960 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:58:25,980 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de13650-6abf-48de-a52c-736fb3f0fbb6/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2022-10-17 10:58:26,180 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de13650-6abf-48de-a52c-736fb3f0fbb6/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 [2022-10-17 10:58:26,180 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ldv_list_delErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 23 more)] === [2022-10-17 10:58:26,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:58:26,181 INFO L85 PathProgramCache]: Analyzing trace with hash 952738273, now seen corresponding path program 1 times [2022-10-17 10:58:26,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-10-17 10:58:26,181 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1245380604] [2022-10-17 10:58:26,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:58:26,181 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-10-17 10:58:26,181 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de13650-6abf-48de-a52c-736fb3f0fbb6/bin/uautomizer-J5u9QxTXDZ/mathsat [2022-10-17 10:58:26,183 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de13650-6abf-48de-a52c-736fb3f0fbb6/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-10-17 10:58:26,184 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6de13650-6abf-48de-a52c-736fb3f0fbb6/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2022-10-17 10:58:26,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:58:26,350 INFO L263 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 82 conjunts are in the unsatisfiable core [2022-10-17 10:58:26,354 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:58:26,370 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-10-17 10:58:26,385 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-10-17 10:58:26,423 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 7 treesize of output 5 [2022-10-17 10:58:26,429 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 5 treesize of output 3 [2022-10-17 10:58:26,553 INFO L356 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-10-17 10:58:26,554 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-10-17 10:58:26,569 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-10-17 10:58:26,785 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 7 treesize of output 3 [2022-10-17 10:58:26,791 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 7 treesize of output 3 [2022-10-17 10:58:27,216 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-10-17 10:58:27,231 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-10-17 10:58:27,343 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 21 treesize of output 20 [2022-10-17 10:58:27,362 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 21 treesize of output 20 [2022-10-17 10:58:27,442 INFO L356 Elim1Store]: treesize reduction 17, result has 46.9 percent of original size [2022-10-17 10:58:27,443 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 19 treesize of output 26 [2022-10-17 10:58:27,492 INFO L356 Elim1Store]: treesize reduction 17, result has 46.9 percent of original size [2022-10-17 10:58:27,493 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 19 treesize of output 26 [2022-10-17 10:58:27,939 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 27 treesize of output 19 [2022-10-17 10:58:27,952 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 27 treesize of output 19 [2022-10-17 10:58:28,850 INFO L356 Elim1Store]: treesize reduction 15, result has 6.3 percent of original size [2022-10-17 10:58:28,850 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 69 treesize of output 36 [2022-10-17 10:58:28,859 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 10 [2022-10-17 10:58:29,017 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:58:29,017 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 10:58:29,017 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-10-17 10:58:29,017 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1245380604] [2022-10-17 10:58:29,017 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1245380604] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:58:29,018 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:58:29,018 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-10-17 10:58:29,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574743545] [2022-10-17 10:58:29,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:58:29,018 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-10-17 10:58:29,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-10-17 10:58:29,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-10-17 10:58:29,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=444, Unknown=0, NotChecked=0, Total=506 [2022-10-17 10:58:29,020 INFO L87 Difference]: Start difference. First operand 74 states and 80 transitions. Second operand has 23 states, 20 states have (on average 1.3) internal successors, (26), 18 states have internal predecessors, (26), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3)