./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test5-3.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_412a3d22-2068-4227-83e8-046ca4d2a942/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_412a3d22-2068-4227-83e8-046ca4d2a942/bin/uautomizer-Dbtcem3rbc/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_412a3d22-2068-4227-83e8-046ca4d2a942/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_412a3d22-2068-4227-83e8-046ca4d2a942/bin/uautomizer-Dbtcem3rbc/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test5-3.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_412a3d22-2068-4227-83e8-046ca4d2a942/bin/uautomizer-Dbtcem3rbc/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_412a3d22-2068-4227-83e8-046ca4d2a942/bin/uautomizer-Dbtcem3rbc --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 cb182062e759f3e947e2f86847df2222bda90081d4cc013a50b9baa2d9844063 --- 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-5e519f3 [2022-11-02 20:19:47,503 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 20:19:47,506 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 20:19:47,560 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 20:19:47,561 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 20:19:47,567 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 20:19:47,569 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 20:19:47,572 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 20:19:47,576 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 20:19:47,577 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 20:19:47,579 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 20:19:47,583 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 20:19:47,584 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 20:19:47,594 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 20:19:47,596 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 20:19:47,598 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 20:19:47,601 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 20:19:47,604 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 20:19:47,606 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 20:19:47,608 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 20:19:47,618 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 20:19:47,619 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 20:19:47,621 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 20:19:47,623 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 20:19:47,629 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 20:19:47,633 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 20:19:47,634 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 20:19:47,635 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 20:19:47,637 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 20:19:47,638 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 20:19:47,639 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 20:19:47,640 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 20:19:47,643 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 20:19:47,644 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 20:19:47,645 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 20:19:47,646 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 20:19:47,647 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 20:19:47,647 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 20:19:47,647 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 20:19:47,649 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 20:19:47,649 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 20:19:47,650 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_412a3d22-2068-4227-83e8-046ca4d2a942/bin/uautomizer-Dbtcem3rbc/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-11-02 20:19:47,705 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 20:19:47,706 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 20:19:47,707 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 20:19:47,707 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 20:19:47,708 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 20:19:47,709 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 20:19:47,709 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 20:19:47,710 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 20:19:47,710 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 20:19:47,710 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 20:19:47,712 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-02 20:19:47,712 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-02 20:19:47,712 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 20:19:47,713 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-02 20:19:47,713 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 20:19:47,713 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-02 20:19:47,713 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-02 20:19:47,714 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-02 20:19:47,714 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 20:19:47,714 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-02 20:19:47,715 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-02 20:19:47,715 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 20:19:47,715 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 20:19:47,715 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 20:19:47,716 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 20:19:47,716 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:19:47,716 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 20:19:47,717 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 20:19:47,717 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 20:19:47,719 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 20:19:47,719 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_412a3d22-2068-4227-83e8-046ca4d2a942/bin/uautomizer-Dbtcem3rbc/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_412a3d22-2068-4227-83e8-046ca4d2a942/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cb182062e759f3e947e2f86847df2222bda90081d4cc013a50b9baa2d9844063 [2022-11-02 20:19:48,122 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 20:19:48,154 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 20:19:48,157 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 20:19:48,159 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 20:19:48,160 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 20:19:48,162 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_412a3d22-2068-4227-83e8-046ca4d2a942/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test5-3.i [2022-11-02 20:19:48,259 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_412a3d22-2068-4227-83e8-046ca4d2a942/bin/uautomizer-Dbtcem3rbc/data/056593336/bfdfc5faf5ad4761aa1c5f4d849483aa/FLAG3dd989bae [2022-11-02 20:19:49,018 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 20:19:49,019 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_412a3d22-2068-4227-83e8-046ca4d2a942/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test5-3.i [2022-11-02 20:19:49,041 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_412a3d22-2068-4227-83e8-046ca4d2a942/bin/uautomizer-Dbtcem3rbc/data/056593336/bfdfc5faf5ad4761aa1c5f4d849483aa/FLAG3dd989bae [2022-11-02 20:19:49,181 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_412a3d22-2068-4227-83e8-046ca4d2a942/bin/uautomizer-Dbtcem3rbc/data/056593336/bfdfc5faf5ad4761aa1c5f4d849483aa [2022-11-02 20:19:49,184 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 20:19:49,186 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 20:19:49,188 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 20:19:49,188 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 20:19:49,192 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 20:19:49,193 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:19:49" (1/1) ... [2022-11-02 20:19:49,195 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@74e6bc59 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:19:49, skipping insertion in model container [2022-11-02 20:19:49,195 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:19:49" (1/1) ... [2022-11-02 20:19:49,204 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 20:19:49,283 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 20:19:49,988 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_412a3d22-2068-4227-83e8-046ca4d2a942/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test5-3.i[33021,33034] [2022-11-02 20:19:50,166 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_412a3d22-2068-4227-83e8-046ca4d2a942/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test5-3.i[49681,49694] [2022-11-02 20:19:50,194 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:19:50,206 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) [2022-11-02 20:19:50,206 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@5a150156 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:19:50, skipping insertion in model container [2022-11-02 20:19:50,207 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 20:19:50,207 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2022-11-02 20:19:50,210 INFO L158 Benchmark]: Toolchain (without parser) took 1022.42ms. Allocated memory is still 117.4MB. Free memory was 80.2MB in the beginning and 78.8MB in the end (delta: 1.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-02 20:19:50,211 INFO L158 Benchmark]: CDTParser took 0.34ms. Allocated memory is still 94.4MB. Free memory was 65.7MB in the beginning and 65.7MB in the end (delta: 23.7kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-02 20:19:50,212 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1019.65ms. Allocated memory is still 117.4MB. Free memory was 80.0MB in the beginning and 78.8MB in the end (delta: 1.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-02 20:19:50,214 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34ms. Allocated memory is still 94.4MB. Free memory was 65.7MB in the beginning and 65.7MB in the end (delta: 23.7kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1019.65ms. Allocated memory is still 117.4MB. Free memory was 80.0MB in the beginning and 78.8MB in the end (delta: 1.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 737]: Unsupported Syntax Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_412a3d22-2068-4227-83e8-046ca4d2a942/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_412a3d22-2068-4227-83e8-046ca4d2a942/bin/uautomizer-Dbtcem3rbc/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_412a3d22-2068-4227-83e8-046ca4d2a942/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_412a3d22-2068-4227-83e8-046ca4d2a942/bin/uautomizer-Dbtcem3rbc/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test5-3.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_412a3d22-2068-4227-83e8-046ca4d2a942/bin/uautomizer-Dbtcem3rbc/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_412a3d22-2068-4227-83e8-046ca4d2a942/bin/uautomizer-Dbtcem3rbc --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 cb182062e759f3e947e2f86847df2222bda90081d4cc013a50b9baa2d9844063 --- 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-5e519f3 [2022-11-02 20:19:52,818 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 20:19:52,821 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 20:19:52,850 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 20:19:52,851 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 20:19:52,852 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 20:19:52,854 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 20:19:52,856 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 20:19:52,858 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 20:19:52,859 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 20:19:52,860 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 20:19:52,861 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 20:19:52,862 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 20:19:52,863 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 20:19:52,864 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 20:19:52,866 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 20:19:52,867 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 20:19:52,868 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 20:19:52,870 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 20:19:52,872 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 20:19:52,874 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 20:19:52,876 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 20:19:52,877 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 20:19:52,878 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 20:19:52,883 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 20:19:52,883 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 20:19:52,884 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 20:19:52,885 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 20:19:52,885 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 20:19:52,886 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 20:19:52,887 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 20:19:52,888 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 20:19:52,889 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 20:19:52,889 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 20:19:52,891 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 20:19:52,891 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 20:19:52,892 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 20:19:52,892 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 20:19:52,893 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 20:19:52,894 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 20:19:52,895 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 20:19:52,896 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_412a3d22-2068-4227-83e8-046ca4d2a942/bin/uautomizer-Dbtcem3rbc/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2022-11-02 20:19:52,936 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 20:19:52,937 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 20:19:52,937 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 20:19:52,937 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 20:19:52,938 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 20:19:52,939 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 20:19:52,939 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 20:19:52,940 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 20:19:52,940 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 20:19:52,940 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 20:19:52,941 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-02 20:19:52,941 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-02 20:19:52,941 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 20:19:52,941 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-02 20:19:52,942 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 20:19:52,942 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-02 20:19:52,942 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-02 20:19:52,942 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-02 20:19:52,943 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 20:19:52,943 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-02 20:19:52,943 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-02 20:19:52,943 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-02 20:19:52,943 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-02 20:19:52,944 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 20:19:52,944 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 20:19:52,944 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 20:19:52,944 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 20:19:52,945 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:19:52,945 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 20:19:52,945 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 20:19:52,945 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-11-02 20:19:52,946 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-02 20:19:52,947 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-02 20:19:52,947 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_412a3d22-2068-4227-83e8-046ca4d2a942/bin/uautomizer-Dbtcem3rbc/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_412a3d22-2068-4227-83e8-046ca4d2a942/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cb182062e759f3e947e2f86847df2222bda90081d4cc013a50b9baa2d9844063 [2022-11-02 20:19:53,380 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 20:19:53,415 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 20:19:53,419 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 20:19:53,421 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 20:19:53,422 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 20:19:53,424 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_412a3d22-2068-4227-83e8-046ca4d2a942/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test5-3.i [2022-11-02 20:19:53,510 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_412a3d22-2068-4227-83e8-046ca4d2a942/bin/uautomizer-Dbtcem3rbc/data/118a6dccd/a29b530cb747441599d3a76993197637/FLAG45f787ddf [2022-11-02 20:19:54,331 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 20:19:54,332 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_412a3d22-2068-4227-83e8-046ca4d2a942/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test5-3.i [2022-11-02 20:19:54,352 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_412a3d22-2068-4227-83e8-046ca4d2a942/bin/uautomizer-Dbtcem3rbc/data/118a6dccd/a29b530cb747441599d3a76993197637/FLAG45f787ddf [2022-11-02 20:19:54,450 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_412a3d22-2068-4227-83e8-046ca4d2a942/bin/uautomizer-Dbtcem3rbc/data/118a6dccd/a29b530cb747441599d3a76993197637 [2022-11-02 20:19:54,453 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 20:19:54,454 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 20:19:54,456 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 20:19:54,456 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 20:19:54,470 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 20:19:54,471 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:19:54" (1/1) ... [2022-11-02 20:19:54,473 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@aca3e4a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:19:54, skipping insertion in model container [2022-11-02 20:19:54,473 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:19:54" (1/1) ... [2022-11-02 20:19:54,485 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 20:19:54,581 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 20:19:55,285 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_412a3d22-2068-4227-83e8-046ca4d2a942/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test5-3.i[33021,33034] [2022-11-02 20:19:55,556 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_412a3d22-2068-4227-83e8-046ca4d2a942/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test5-3.i[49681,49694] [2022-11-02 20:19:55,606 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:19:55,625 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-11-02 20:19:55,645 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 20:19:55,677 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_412a3d22-2068-4227-83e8-046ca4d2a942/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test5-3.i[33021,33034] [2022-11-02 20:19:55,821 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_412a3d22-2068-4227-83e8-046ca4d2a942/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test5-3.i[49681,49694] [2022-11-02 20:19:55,855 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:19:55,864 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 20:19:55,909 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_412a3d22-2068-4227-83e8-046ca4d2a942/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test5-3.i[33021,33034] [2022-11-02 20:19:55,968 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_412a3d22-2068-4227-83e8-046ca4d2a942/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test5-3.i[49681,49694] [2022-11-02 20:19:55,981 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:19:56,046 INFO L208 MainTranslator]: Completed translation [2022-11-02 20:19:56,047 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:19:56 WrapperNode [2022-11-02 20:19:56,047 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 20:19:56,049 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 20:19:56,049 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 20:19:56,049 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 20:19:56,059 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:19:56" (1/1) ... [2022-11-02 20:19:56,118 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:19:56" (1/1) ... [2022-11-02 20:19:56,214 INFO L138 Inliner]: procedures = 180, calls = 487, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1721 [2022-11-02 20:19:56,215 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 20:19:56,216 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 20:19:56,216 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 20:19:56,216 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 20:19:56,228 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:19:56" (1/1) ... [2022-11-02 20:19:56,234 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:19:56" (1/1) ... [2022-11-02 20:19:56,277 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:19:56" (1/1) ... [2022-11-02 20:19:56,277 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:19:56" (1/1) ... [2022-11-02 20:19:56,415 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:19:56" (1/1) ... [2022-11-02 20:19:56,453 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:19:56" (1/1) ... [2022-11-02 20:19:56,464 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:19:56" (1/1) ... [2022-11-02 20:19:56,482 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:19:56" (1/1) ... [2022-11-02 20:19:56,500 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 20:19:56,515 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 20:19:56,516 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 20:19:56,516 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 20:19:56,517 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:19:56" (1/1) ... [2022-11-02 20:19:56,526 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:19:56,540 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_412a3d22-2068-4227-83e8-046ca4d2a942/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:19:56,561 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_412a3d22-2068-4227-83e8-046ca4d2a942/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 20:19:56,587 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_412a3d22-2068-4227-83e8-046ca4d2a942/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 20:19:56,629 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2022-11-02 20:19:56,629 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-11-02 20:19:56,629 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-02 20:19:56,629 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-02 20:19:56,630 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-02 20:19:56,630 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-02 20:19:56,630 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-02 20:19:56,630 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-02 20:19:56,630 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-02 20:19:56,631 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-02 20:19:56,632 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2022-11-02 20:19:56,632 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-02 20:19:56,632 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-02 20:19:56,632 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-11-02 20:19:56,633 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-02 20:19:56,633 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 20:19:56,633 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 20:19:57,108 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 20:19:57,111 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 20:19:57,116 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-11-02 20:20:06,904 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 20:20:06,935 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 20:20:06,938 INFO L300 CfgBuilder]: Removed 100 assume(true) statements. [2022-11-02 20:20:06,944 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:20:06 BoogieIcfgContainer [2022-11-02 20:20:06,945 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 20:20:06,949 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 20:20:06,950 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 20:20:06,953 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 20:20:06,954 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 08:19:54" (1/3) ... [2022-11-02 20:20:06,955 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53104771 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:20:06, skipping insertion in model container [2022-11-02 20:20:06,955 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:19:56" (2/3) ... [2022-11-02 20:20:06,956 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53104771 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:20:06, skipping insertion in model container [2022-11-02 20:20:06,956 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:20:06" (3/3) ... [2022-11-02 20:20:06,958 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_SAX_test5-3.i [2022-11-02 20:20:06,983 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 20:20:06,984 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 932 error locations. [2022-11-02 20:20:07,097 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:20:07,105 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;@41d35fc8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:20:07,106 INFO L358 AbstractCegarLoop]: Starting to check reachability of 932 error locations. [2022-11-02 20:20:07,116 INFO L276 IsEmpty]: Start isEmpty. Operand has 1833 states, 893 states have (on average 2.2642777155655094) internal successors, (2022), 1824 states have internal predecessors, (2022), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2022-11-02 20:20:07,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-02 20:20:07,124 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:20:07,125 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-02 20:20:07,125 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 929 more)] === [2022-11-02 20:20:07,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:20:07,132 INFO L85 PathProgramCache]: Analyzing trace with hash 37287509, now seen corresponding path program 1 times [2022-11-02 20:20:07,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:20:07,148 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1521977367] [2022-11-02 20:20:07,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:20:07,149 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:20:07,149 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_412a3d22-2068-4227-83e8-046ca4d2a942/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:20:07,154 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_412a3d22-2068-4227-83e8-046ca4d2a942/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:20:07,170 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_412a3d22-2068-4227-83e8-046ca4d2a942/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-02 20:20:07,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:20:07,406 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 1 conjunts are in the unsatisfiable core [2022-11-02 20:20:07,412 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:20:07,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:20:07,436 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:20:07,437 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:20:07,437 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1521977367] [2022-11-02 20:20:07,438 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1521977367] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:20:07,439 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:20:07,439 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 20:20:07,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185969118] [2022-11-02 20:20:07,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:20:07,448 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-02 20:20:07,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:20:07,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-02 20:20:07,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-02 20:20:07,497 INFO L87 Difference]: Start difference. First operand has 1833 states, 893 states have (on average 2.2642777155655094) internal successors, (2022), 1824 states have internal predecessors, (2022), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) Second operand has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:20:07,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:20:07,616 INFO L93 Difference]: Finished difference Result 1815 states and 1917 transitions. [2022-11-02 20:20:07,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-02 20:20:07,628 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-02 20:20:07,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:20:07,660 INFO L225 Difference]: With dead ends: 1815 [2022-11-02 20:20:07,660 INFO L226 Difference]: Without dead ends: 1813 [2022-11-02 20:20:07,662 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-02 20:20:07,668 INFO L413 NwaCegarLoop]: 1917 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1917 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:20:07,670 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1917 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:20:07,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1813 states. [2022-11-02 20:20:07,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1813 to 1813. [2022-11-02 20:20:07,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1813 states, 884 states have (on average 2.1414027149321266) internal successors, (1893), 1804 states have internal predecessors, (1893), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2022-11-02 20:20:07,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1813 states to 1813 states and 1915 transitions. [2022-11-02 20:20:07,796 INFO L78 Accepts]: Start accepts. Automaton has 1813 states and 1915 transitions. Word has length 5 [2022-11-02 20:20:07,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:20:07,797 INFO L495 AbstractCegarLoop]: Abstraction has 1813 states and 1915 transitions. [2022-11-02 20:20:07,797 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:20:07,798 INFO L276 IsEmpty]: Start isEmpty. Operand 1813 states and 1915 transitions. [2022-11-02 20:20:07,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-02 20:20:07,798 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:20:07,798 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-02 20:20:07,815 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_412a3d22-2068-4227-83e8-046ca4d2a942/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-11-02 20:20:08,011 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_412a3d22-2068-4227-83e8-046ca4d2a942/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:20:08,012 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 929 more)] === [2022-11-02 20:20:08,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:20:08,013 INFO L85 PathProgramCache]: Analyzing trace with hash 37287571, now seen corresponding path program 1 times [2022-11-02 20:20:08,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:20:08,013 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1102125086] [2022-11-02 20:20:08,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:20:08,014 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:20:08,014 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_412a3d22-2068-4227-83e8-046ca4d2a942/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:20:08,015 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_412a3d22-2068-4227-83e8-046ca4d2a942/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:20:08,020 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_412a3d22-2068-4227-83e8-046ca4d2a942/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-02 20:20:08,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:20:08,264 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-02 20:20:08,267 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:20:08,320 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 [2022-11-02 20:20:08,352 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:20:08,352 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:20:08,352 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:20:08,353 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1102125086] [2022-11-02 20:20:08,353 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1102125086] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:20:08,353 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:20:08,353 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 20:20:08,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31974837] [2022-11-02 20:20:08,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:20:08,355 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:20:08,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:20:08,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:20:08,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:20:08,357 INFO L87 Difference]: Start difference. First operand 1813 states and 1915 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:20:13,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:20:13,080 INFO L93 Difference]: Finished difference Result 2069 states and 2214 transitions. [2022-11-02 20:20:13,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:20:13,081 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-02 20:20:13,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:20:13,088 INFO L225 Difference]: With dead ends: 2069 [2022-11-02 20:20:13,089 INFO L226 Difference]: Without dead ends: 2069 [2022-11-02 20:20:13,089 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:20:13,091 INFO L413 NwaCegarLoop]: 1354 mSDtfsCounter, 1369 mSDsluCounter, 455 mSDsCounter, 0 mSdLazyCounter, 1085 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1380 SdHoareTripleChecker+Valid, 1809 SdHoareTripleChecker+Invalid, 1187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 1085 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2022-11-02 20:20:13,091 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1380 Valid, 1809 Invalid, 1187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 1085 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2022-11-02 20:20:13,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2069 states. [2022-11-02 20:20:13,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2069 to 1798. [2022-11-02 20:20:13,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1798 states, 960 states have (on average 2.017708333333333) internal successors, (1937), 1789 states have internal predecessors, (1937), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2022-11-02 20:20:13,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1798 states to 1798 states and 1959 transitions. [2022-11-02 20:20:13,146 INFO L78 Accepts]: Start accepts. Automaton has 1798 states and 1959 transitions. Word has length 5 [2022-11-02 20:20:13,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:20:13,146 INFO L495 AbstractCegarLoop]: Abstraction has 1798 states and 1959 transitions. [2022-11-02 20:20:13,147 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:20:13,147 INFO L276 IsEmpty]: Start isEmpty. Operand 1798 states and 1959 transitions. [2022-11-02 20:20:13,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-02 20:20:13,148 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:20:13,148 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-02 20:20:13,167 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_412a3d22-2068-4227-83e8-046ca4d2a942/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-02 20:20:13,367 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_412a3d22-2068-4227-83e8-046ca4d2a942/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:20:13,368 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 929 more)] === [2022-11-02 20:20:13,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:20:13,368 INFO L85 PathProgramCache]: Analyzing trace with hash 37287572, now seen corresponding path program 1 times [2022-11-02 20:20:13,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:20:13,369 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1136109596] [2022-11-02 20:20:13,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:20:13,369 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:20:13,369 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_412a3d22-2068-4227-83e8-046ca4d2a942/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:20:13,371 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_412a3d22-2068-4227-83e8-046ca4d2a942/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:20:13,379 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_412a3d22-2068-4227-83e8-046ca4d2a942/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-11-02 20:20:13,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:20:13,577 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-02 20:20:13,580 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:20:13,600 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 [2022-11-02 20:20:13,629 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:20:13,629 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:20:13,630 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:20:13,630 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1136109596] [2022-11-02 20:20:13,630 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1136109596] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:20:13,630 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:20:13,631 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 20:20:13,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739756088] [2022-11-02 20:20:13,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:20:13,632 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:20:13,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:20:13,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:20:13,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:20:13,633 INFO L87 Difference]: Start difference. First operand 1798 states and 1959 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:20:20,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:20:20,142 INFO L93 Difference]: Finished difference Result 2318 states and 2529 transitions. [2022-11-02 20:20:20,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:20:20,143 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-02 20:20:20,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:20:20,153 INFO L225 Difference]: With dead ends: 2318 [2022-11-02 20:20:20,153 INFO L226 Difference]: Without dead ends: 2318 [2022-11-02 20:20:20,154 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:20:20,155 INFO L413 NwaCegarLoop]: 1746 mSDtfsCounter, 741 mSDsluCounter, 802 mSDsCounter, 0 mSdLazyCounter, 1158 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 746 SdHoareTripleChecker+Valid, 2548 SdHoareTripleChecker+Invalid, 1181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 1158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time [2022-11-02 20:20:20,156 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [746 Valid, 2548 Invalid, 1181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 1158 Invalid, 0 Unknown, 0 Unchecked, 6.4s Time] [2022-11-02 20:20:20,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2318 states. [2022-11-02 20:20:20,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2318 to 1954. [2022-11-02 20:20:20,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1954 states, 1126 states have (on average 1.992007104795737) internal successors, (2243), 1945 states have internal predecessors, (2243), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2022-11-02 20:20:20,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1954 states to 1954 states and 2265 transitions. [2022-11-02 20:20:20,208 INFO L78 Accepts]: Start accepts. Automaton has 1954 states and 2265 transitions. Word has length 5 [2022-11-02 20:20:20,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:20:20,208 INFO L495 AbstractCegarLoop]: Abstraction has 1954 states and 2265 transitions. [2022-11-02 20:20:20,209 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:20:20,209 INFO L276 IsEmpty]: Start isEmpty. Operand 1954 states and 2265 transitions. [2022-11-02 20:20:20,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-02 20:20:20,210 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:20:20,210 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-02 20:20:20,230 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_412a3d22-2068-4227-83e8-046ca4d2a942/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-11-02 20:20:20,423 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_412a3d22-2068-4227-83e8-046ca4d2a942/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:20:20,423 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr640REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 929 more)] === [2022-11-02 20:20:20,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:20:20,424 INFO L85 PathProgramCache]: Analyzing trace with hash 1157601995, now seen corresponding path program 1 times [2022-11-02 20:20:20,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:20:20,425 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1753017873] [2022-11-02 20:20:20,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:20:20,425 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:20:20,425 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_412a3d22-2068-4227-83e8-046ca4d2a942/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:20:20,427 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_412a3d22-2068-4227-83e8-046ca4d2a942/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:20:20,431 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_412a3d22-2068-4227-83e8-046ca4d2a942/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-11-02 20:20:20,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:20:20,624 INFO L263 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-02 20:20:20,626 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:20:20,638 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:20:20,638 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:20:20,638 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:20:20,639 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1753017873] [2022-11-02 20:20:20,639 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1753017873] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:20:20,639 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:20:20,639 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:20:20,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353033825] [2022-11-02 20:20:20,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:20:20,640 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:20:20,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:20:20,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:20:20,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:20:20,642 INFO L87 Difference]: Start difference. First operand 1954 states and 2265 transitions. Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:20:20,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:20:20,834 INFO L93 Difference]: Finished difference Result 3514 states and 4117 transitions. [2022-11-02 20:20:20,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:20:20,839 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-11-02 20:20:20,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:20:20,854 INFO L225 Difference]: With dead ends: 3514 [2022-11-02 20:20:20,854 INFO L226 Difference]: Without dead ends: 3514 [2022-11-02 20:20:20,855 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:20:20,861 INFO L413 NwaCegarLoop]: 2266 mSDtfsCounter, 1377 mSDsluCounter, 1803 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1388 SdHoareTripleChecker+Valid, 4069 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:20:20,863 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1388 Valid, 4069 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:20:20,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3514 states. [2022-11-02 20:20:20,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3514 to 1956. [2022-11-02 20:20:20,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1956 states, 1128 states have (on average 1.9902482269503545) internal successors, (2245), 1947 states have internal predecessors, (2245), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2022-11-02 20:20:20,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1956 states to 1956 states and 2267 transitions. [2022-11-02 20:20:20,962 INFO L78 Accepts]: Start accepts. Automaton has 1956 states and 2267 transitions. Word has length 6 [2022-11-02 20:20:20,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:20:20,962 INFO L495 AbstractCegarLoop]: Abstraction has 1956 states and 2267 transitions. [2022-11-02 20:20:20,963 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:20:20,964 INFO L276 IsEmpty]: Start isEmpty. Operand 1956 states and 2267 transitions. [2022-11-02 20:20:20,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-02 20:20:20,964 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:20:20,971 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:20:20,991 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_412a3d22-2068-4227-83e8-046ca4d2a942/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-11-02 20:20:21,184 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_412a3d22-2068-4227-83e8-046ca4d2a942/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:20:21,184 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 929 more)] === [2022-11-02 20:20:21,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:20:21,185 INFO L85 PathProgramCache]: Analyzing trace with hash 334651453, now seen corresponding path program 1 times [2022-11-02 20:20:21,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:20:21,186 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [608693272] [2022-11-02 20:20:21,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:20:21,186 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:20:21,187 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_412a3d22-2068-4227-83e8-046ca4d2a942/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:20:21,188 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_412a3d22-2068-4227-83e8-046ca4d2a942/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:20:21,192 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_412a3d22-2068-4227-83e8-046ca4d2a942/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-11-02 20:20:21,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:20:21,445 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-02 20:20:21,448 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:20:21,462 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:20:21,462 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:20:21,462 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:20:21,463 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [608693272] [2022-11-02 20:20:21,463 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [608693272] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:20:21,463 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:20:21,463 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:20:21,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369757579] [2022-11-02 20:20:21,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:20:21,464 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:20:21,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:20:21,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:20:21,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:20:21,466 INFO L87 Difference]: Start difference. First operand 1956 states and 2267 transitions. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:20:21,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:20:21,542 INFO L93 Difference]: Finished difference Result 1920 states and 2230 transitions. [2022-11-02 20:20:21,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:20:21,543 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-11-02 20:20:21,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:20:21,551 INFO L225 Difference]: With dead ends: 1920 [2022-11-02 20:20:21,551 INFO L226 Difference]: Without dead ends: 1920 [2022-11-02 20:20:21,552 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:20:21,553 INFO L413 NwaCegarLoop]: 1766 mSDtfsCounter, 1736 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1747 SdHoareTripleChecker+Valid, 1794 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:20:21,553 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1747 Valid, 1794 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:20:21,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1920 states. [2022-11-02 20:20:21,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1920 to 1914. [2022-11-02 20:20:21,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1914 states, 1110 states have (on average 1.9837837837837837) internal successors, (2202), 1905 states have internal predecessors, (2202), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2022-11-02 20:20:21,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1914 states to 1914 states and 2224 transitions. [2022-11-02 20:20:21,599 INFO L78 Accepts]: Start accepts. Automaton has 1914 states and 2224 transitions. Word has length 11 [2022-11-02 20:20:21,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:20:21,600 INFO L495 AbstractCegarLoop]: Abstraction has 1914 states and 2224 transitions. [2022-11-02 20:20:21,600 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:20:21,600 INFO L276 IsEmpty]: Start isEmpty. Operand 1914 states and 2224 transitions. [2022-11-02 20:20:21,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-02 20:20:21,601 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:20:21,601 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:20:21,625 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_412a3d22-2068-4227-83e8-046ca4d2a942/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-11-02 20:20:21,816 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_412a3d22-2068-4227-83e8-046ca4d2a942/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:20:21,817 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr28REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 929 more)] === [2022-11-02 20:20:21,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:20:21,817 INFO L85 PathProgramCache]: Analyzing trace with hash -522505033, now seen corresponding path program 1 times [2022-11-02 20:20:21,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:20:21,818 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [17539523] [2022-11-02 20:20:21,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:20:21,818 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:20:21,818 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_412a3d22-2068-4227-83e8-046ca4d2a942/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:20:21,819 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_412a3d22-2068-4227-83e8-046ca4d2a942/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:20:21,823 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_412a3d22-2068-4227-83e8-046ca4d2a942/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-11-02 20:20:22,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:20:22,068 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-02 20:20:22,071 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:20:22,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:20:22,101 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:20:22,102 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:20:22,103 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [17539523] [2022-11-02 20:20:22,103 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [17539523] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:20:22,103 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:20:22,103 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:20:22,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874581200] [2022-11-02 20:20:22,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:20:22,104 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:20:22,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:20:22,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:20:22,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:20:22,106 INFO L87 Difference]: Start difference. First operand 1914 states and 2224 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:20:22,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:20:22,244 INFO L93 Difference]: Finished difference Result 1899 states and 2202 transitions. [2022-11-02 20:20:22,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 20:20:22,245 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-02 20:20:22,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:20:22,253 INFO L225 Difference]: With dead ends: 1899 [2022-11-02 20:20:22,253 INFO L226 Difference]: Without dead ends: 1899 [2022-11-02 20:20:22,253 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:20:22,255 INFO L413 NwaCegarLoop]: 1721 mSDtfsCounter, 1707 mSDsluCounter, 1742 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1718 SdHoareTripleChecker+Valid, 3463 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:20:22,256 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1718 Valid, 3463 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:20:22,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1899 states. [2022-11-02 20:20:22,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1899 to 1892. [2022-11-02 20:20:22,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1892 states, 1102 states have (on average 1.971869328493648) internal successors, (2173), 1883 states have internal predecessors, (2173), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2022-11-02 20:20:22,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1892 states to 1892 states and 2195 transitions. [2022-11-02 20:20:22,303 INFO L78 Accepts]: Start accepts. Automaton has 1892 states and 2195 transitions. Word has length 13 [2022-11-02 20:20:22,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:20:22,303 INFO L495 AbstractCegarLoop]: Abstraction has 1892 states and 2195 transitions. [2022-11-02 20:20:22,304 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:20:22,304 INFO L276 IsEmpty]: Start isEmpty. Operand 1892 states and 2195 transitions. [2022-11-02 20:20:22,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-11-02 20:20:22,305 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:20:22,305 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] [2022-11-02 20:20:22,326 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_412a3d22-2068-4227-83e8-046ca4d2a942/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-11-02 20:20:22,519 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_412a3d22-2068-4227-83e8-046ca4d2a942/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:20:22,519 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr42REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 929 more)] === [2022-11-02 20:20:22,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:20:22,519 INFO L85 PathProgramCache]: Analyzing trace with hash -22216187, now seen corresponding path program 1 times [2022-11-02 20:20:22,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:20:22,520 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1540311265] [2022-11-02 20:20:22,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:20:22,520 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:20:22,521 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_412a3d22-2068-4227-83e8-046ca4d2a942/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:20:22,523 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_412a3d22-2068-4227-83e8-046ca4d2a942/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:20:22,570 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_412a3d22-2068-4227-83e8-046ca4d2a942/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-11-02 20:20:22,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:20:22,788 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-02 20:20:22,792 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:20:22,798 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 [2022-11-02 20:20:22,915 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:20:22,916 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:20:22,917 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:20:22,917 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1540311265] [2022-11-02 20:20:22,917 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1540311265] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:20:22,917 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:20:22,917 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:20:22,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461188180] [2022-11-02 20:20:22,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:20:22,918 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:20:22,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:20:22,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:20:22,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:20:22,920 INFO L87 Difference]: Start difference. First operand 1892 states and 2195 transitions. Second operand has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:20:30,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:20:30,460 INFO L93 Difference]: Finished difference Result 3106 states and 3455 transitions. [2022-11-02 20:20:30,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:20:30,461 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-11-02 20:20:30,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:20:30,474 INFO L225 Difference]: With dead ends: 3106 [2022-11-02 20:20:30,474 INFO L226 Difference]: Without dead ends: 3106 [2022-11-02 20:20:30,475 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:20:30,476 INFO L413 NwaCegarLoop]: 1071 mSDtfsCounter, 3382 mSDsluCounter, 1351 mSDsCounter, 0 mSdLazyCounter, 2085 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3390 SdHoareTripleChecker+Valid, 2422 SdHoareTripleChecker+Invalid, 2134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 2085 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.4s IncrementalHoareTripleChecker+Time [2022-11-02 20:20:30,476 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3390 Valid, 2422 Invalid, 2134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 2085 Invalid, 0 Unknown, 0 Unchecked, 7.4s Time] [2022-11-02 20:20:30,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3106 states. [2022-11-02 20:20:30,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3106 to 1888. [2022-11-02 20:20:30,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1888 states, 1102 states have (on average 1.9682395644283122) internal successors, (2169), 1879 states have internal predecessors, (2169), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2022-11-02 20:20:30,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1888 states to 1888 states and 2191 transitions. [2022-11-02 20:20:30,527 INFO L78 Accepts]: Start accepts. Automaton has 1888 states and 2191 transitions. Word has length 27 [2022-11-02 20:20:30,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:20:30,528 INFO L495 AbstractCegarLoop]: Abstraction has 1888 states and 2191 transitions. [2022-11-02 20:20:30,528 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:20:30,528 INFO L276 IsEmpty]: Start isEmpty. Operand 1888 states and 2191 transitions. [2022-11-02 20:20:30,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-11-02 20:20:30,529 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:20:30,529 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] [2022-11-02 20:20:30,546 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_412a3d22-2068-4227-83e8-046ca4d2a942/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-11-02 20:20:30,744 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_412a3d22-2068-4227-83e8-046ca4d2a942/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:20:30,745 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr43REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 929 more)] === [2022-11-02 20:20:30,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:20:30,745 INFO L85 PathProgramCache]: Analyzing trace with hash -22216186, now seen corresponding path program 1 times [2022-11-02 20:20:30,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:20:30,746 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [273742237] [2022-11-02 20:20:30,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:20:30,746 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:20:30,747 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_412a3d22-2068-4227-83e8-046ca4d2a942/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:20:30,748 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_412a3d22-2068-4227-83e8-046ca4d2a942/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:20:30,752 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_412a3d22-2068-4227-83e8-046ca4d2a942/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-11-02 20:20:31,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:20:31,009 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 20:20:31,011 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:20:31,023 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 [2022-11-02 20:20:31,258 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:20:31,258 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:20:31,259 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:20:31,259 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [273742237] [2022-11-02 20:20:31,259 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [273742237] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:20:31,259 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:20:31,259 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:20:31,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675153107] [2022-11-02 20:20:31,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:20:31,260 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:20:31,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:20:31,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:20:31,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:20:31,261 INFO L87 Difference]: Start difference. First operand 1888 states and 2191 transitions. Second operand has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:20:40,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:20:40,170 INFO L93 Difference]: Finished difference Result 2634 states and 2855 transitions. [2022-11-02 20:20:40,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:20:40,173 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-11-02 20:20:40,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:20:40,181 INFO L225 Difference]: With dead ends: 2634 [2022-11-02 20:20:40,181 INFO L226 Difference]: Without dead ends: 2634 [2022-11-02 20:20:40,181 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:20:40,182 INFO L413 NwaCegarLoop]: 1272 mSDtfsCounter, 1687 mSDsluCounter, 1613 mSDsCounter, 0 mSdLazyCounter, 2133 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1687 SdHoareTripleChecker+Valid, 2885 SdHoareTripleChecker+Invalid, 2147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 2133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.8s IncrementalHoareTripleChecker+Time [2022-11-02 20:20:40,182 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1687 Valid, 2885 Invalid, 2147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 2133 Invalid, 0 Unknown, 0 Unchecked, 8.8s Time] [2022-11-02 20:20:40,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2634 states. [2022-11-02 20:20:40,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2634 to 1884. [2022-11-02 20:20:40,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1884 states, 1102 states have (on average 1.9646098003629764) internal successors, (2165), 1875 states have internal predecessors, (2165), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2022-11-02 20:20:40,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1884 states to 1884 states and 2187 transitions. [2022-11-02 20:20:40,227 INFO L78 Accepts]: Start accepts. Automaton has 1884 states and 2187 transitions. Word has length 27 [2022-11-02 20:20:40,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:20:40,228 INFO L495 AbstractCegarLoop]: Abstraction has 1884 states and 2187 transitions. [2022-11-02 20:20:40,228 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:20:40,228 INFO L276 IsEmpty]: Start isEmpty. Operand 1884 states and 2187 transitions. [2022-11-02 20:20:40,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-11-02 20:20:40,229 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:20:40,230 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:20:40,251 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_412a3d22-2068-4227-83e8-046ca4d2a942/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-11-02 20:20:40,443 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_412a3d22-2068-4227-83e8-046ca4d2a942/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:20:40,444 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr108REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 929 more)] === [2022-11-02 20:20:40,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:20:40,445 INFO L85 PathProgramCache]: Analyzing trace with hash 810363537, now seen corresponding path program 1 times [2022-11-02 20:20:40,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:20:40,445 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1915016763] [2022-11-02 20:20:40,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:20:40,446 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:20:40,446 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_412a3d22-2068-4227-83e8-046ca4d2a942/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:20:40,447 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_412a3d22-2068-4227-83e8-046ca4d2a942/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:20:40,450 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_412a3d22-2068-4227-83e8-046ca4d2a942/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-11-02 20:20:40,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:20:40,796 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-02 20:20:40,800 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:20:40,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:20:40,879 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:20:40,880 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:20:40,880 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1915016763] [2022-11-02 20:20:40,880 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1915016763] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:20:40,880 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:20:40,881 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:20:40,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862529809] [2022-11-02 20:20:40,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:20:40,882 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:20:40,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:20:40,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:20:40,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:20:40,884 INFO L87 Difference]: Start difference. First operand 1884 states and 2187 transitions. Second operand has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:20:40,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:20:40,978 INFO L93 Difference]: Finished difference Result 1884 states and 2183 transitions. [2022-11-02 20:20:40,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 20:20:40,978 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2022-11-02 20:20:40,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:20:40,986 INFO L225 Difference]: With dead ends: 1884 [2022-11-02 20:20:40,986 INFO L226 Difference]: Without dead ends: 1884 [2022-11-02 20:20:40,986 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:20:40,989 INFO L413 NwaCegarLoop]: 1715 mSDtfsCounter, 1683 mSDsluCounter, 1726 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1694 SdHoareTripleChecker+Valid, 3441 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:20:40,990 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1694 Valid, 3441 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:20:40,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1884 states. [2022-11-02 20:20:41,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1884 to 1878. [2022-11-02 20:20:41,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1878 states, 1096 states have (on average 1.9662408759124088) internal successors, (2155), 1869 states have internal predecessors, (2155), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2022-11-02 20:20:41,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1878 states to 1878 states and 2177 transitions. [2022-11-02 20:20:41,052 INFO L78 Accepts]: Start accepts. Automaton has 1878 states and 2177 transitions. Word has length 42 [2022-11-02 20:20:41,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:20:41,055 INFO L495 AbstractCegarLoop]: Abstraction has 1878 states and 2177 transitions. [2022-11-02 20:20:41,055 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:20:41,055 INFO L276 IsEmpty]: Start isEmpty. Operand 1878 states and 2177 transitions. [2022-11-02 20:20:41,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-11-02 20:20:41,060 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:20:41,061 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:20:41,084 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_412a3d22-2068-4227-83e8-046ca4d2a942/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-11-02 20:20:41,277 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_412a3d22-2068-4227-83e8-046ca4d2a942/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:20:41,278 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr108REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 929 more)] === [2022-11-02 20:20:41,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:20:41,279 INFO L85 PathProgramCache]: Analyzing trace with hash 2087041861, now seen corresponding path program 1 times [2022-11-02 20:20:41,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:20:41,280 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1385673597] [2022-11-02 20:20:41,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:20:41,280 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:20:41,280 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_412a3d22-2068-4227-83e8-046ca4d2a942/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:20:41,281 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_412a3d22-2068-4227-83e8-046ca4d2a942/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:20:41,285 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_412a3d22-2068-4227-83e8-046ca4d2a942/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-11-02 20:20:41,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:20:41,602 INFO L263 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-02 20:20:41,605 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:20:41,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:20:41,955 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:20:41,956 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:20:41,956 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1385673597] [2022-11-02 20:20:41,956 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1385673597] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:20:41,956 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:20:41,956 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:20:41,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75827956] [2022-11-02 20:20:41,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:20:41,957 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:20:41,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:20:41,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:20:41,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:20:41,958 INFO L87 Difference]: Start difference. First operand 1878 states and 2177 transitions. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:20:42,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:20:42,260 INFO L93 Difference]: Finished difference Result 2297 states and 2613 transitions. [2022-11-02 20:20:42,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:20:42,261 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2022-11-02 20:20:42,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:20:42,269 INFO L225 Difference]: With dead ends: 2297 [2022-11-02 20:20:42,269 INFO L226 Difference]: Without dead ends: 2297 [2022-11-02 20:20:42,270 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:20:42,270 INFO L413 NwaCegarLoop]: 1793 mSDtfsCounter, 455 mSDsluCounter, 1589 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 457 SdHoareTripleChecker+Valid, 3382 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 20:20:42,271 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [457 Valid, 3382 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-02 20:20:42,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2297 states. [2022-11-02 20:20:42,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2297 to 1924. [2022-11-02 20:20:42,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1924 states, 1142 states have (on average 1.9273204903677759) internal successors, (2201), 1915 states have internal predecessors, (2201), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2022-11-02 20:20:42,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1924 states to 1924 states and 2223 transitions. [2022-11-02 20:20:42,319 INFO L78 Accepts]: Start accepts. Automaton has 1924 states and 2223 transitions. Word has length 50 [2022-11-02 20:20:42,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:20:42,321 INFO L495 AbstractCegarLoop]: Abstraction has 1924 states and 2223 transitions. [2022-11-02 20:20:42,321 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:20:42,321 INFO L276 IsEmpty]: Start isEmpty. Operand 1924 states and 2223 transitions. [2022-11-02 20:20:42,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-11-02 20:20:42,327 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:20:42,327 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:20:42,347 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_412a3d22-2068-4227-83e8-046ca4d2a942/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-11-02 20:20:42,543 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_412a3d22-2068-4227-83e8-046ca4d2a942/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:20:42,543 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr61REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 929 more)] === [2022-11-02 20:20:42,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:20:42,544 INFO L85 PathProgramCache]: Analyzing trace with hash 1009990608, now seen corresponding path program 1 times [2022-11-02 20:20:42,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:20:42,545 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1384345959] [2022-11-02 20:20:42,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:20:42,545 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:20:42,546 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_412a3d22-2068-4227-83e8-046ca4d2a942/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:20:42,547 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_412a3d22-2068-4227-83e8-046ca4d2a942/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:20:42,552 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_412a3d22-2068-4227-83e8-046ca4d2a942/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-11-02 20:20:43,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:20:43,067 INFO L263 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-02 20:20:43,074 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:20:43,084 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 [2022-11-02 20:20:43,092 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 [2022-11-02 20:20:43,702 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:20:43,704 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 [2022-11-02 20:20:43,730 INFO L356 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-02 20:20:43,731 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 [2022-11-02 20:20:43,751 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:20:43,752 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:20:43,752 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:20:43,752 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1384345959] [2022-11-02 20:20:43,753 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1384345959] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:20:43,753 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:20:43,753 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:20:43,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241417915] [2022-11-02 20:20:43,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:20:43,754 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:20:43,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:20:43,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:20:43,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:20:43,755 INFO L87 Difference]: Start difference. First operand 1924 states and 2223 transitions. Second operand has 4 states, 3 states have (on average 17.666666666666668) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:20:49,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:20:49,909 INFO L93 Difference]: Finished difference Result 2111 states and 2394 transitions. [2022-11-02 20:20:49,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 20:20:49,910 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 17.666666666666668) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2022-11-02 20:20:49,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:20:49,918 INFO L225 Difference]: With dead ends: 2111 [2022-11-02 20:20:49,919 INFO L226 Difference]: Without dead ends: 2111 [2022-11-02 20:20:49,919 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:20:49,920 INFO L413 NwaCegarLoop]: 817 mSDtfsCounter, 1569 mSDsluCounter, 491 mSDsCounter, 0 mSdLazyCounter, 1570 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1585 SdHoareTripleChecker+Valid, 1308 SdHoareTripleChecker+Invalid, 1670 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 1570 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:20:49,920 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1585 Valid, 1308 Invalid, 1670 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 1570 Invalid, 0 Unknown, 0 Unchecked, 6.1s Time] [2022-11-02 20:20:49,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2111 states. [2022-11-02 20:20:49,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2111 to 1674. [2022-11-02 20:20:49,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1674 states, 976 states have (on average 1.8442622950819672) internal successors, (1800), 1665 states have internal predecessors, (1800), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2022-11-02 20:20:49,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1674 states to 1674 states and 1822 transitions. [2022-11-02 20:20:49,954 INFO L78 Accepts]: Start accepts. Automaton has 1674 states and 1822 transitions. Word has length 53 [2022-11-02 20:20:49,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:20:49,955 INFO L495 AbstractCegarLoop]: Abstraction has 1674 states and 1822 transitions. [2022-11-02 20:20:49,955 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 17.666666666666668) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:20:49,955 INFO L276 IsEmpty]: Start isEmpty. Operand 1674 states and 1822 transitions. [2022-11-02 20:20:49,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-11-02 20:20:49,956 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:20:49,956 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, 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] [2022-11-02 20:20:49,980 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_412a3d22-2068-4227-83e8-046ca4d2a942/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2022-11-02 20:20:50,175 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_412a3d22-2068-4227-83e8-046ca4d2a942/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:20:50,175 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr66REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 929 more)] === [2022-11-02 20:20:50,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:20:50,175 INFO L85 PathProgramCache]: Analyzing trace with hash -1993678057, now seen corresponding path program 1 times [2022-11-02 20:20:50,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:20:50,176 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [579826522] [2022-11-02 20:20:50,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:20:50,176 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:20:50,177 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_412a3d22-2068-4227-83e8-046ca4d2a942/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:20:50,179 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_412a3d22-2068-4227-83e8-046ca4d2a942/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:20:50,195 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_412a3d22-2068-4227-83e8-046ca4d2a942/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-11-02 20:20:50,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:20:50,612 INFO L263 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-02 20:20:50,614 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:20:50,632 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 [2022-11-02 20:20:50,648 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 13 treesize of output 9 [2022-11-02 20:20:50,698 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 11 [2022-11-02 20:20:50,713 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:20:50,714 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:20:50,714 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:20:50,714 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [579826522] [2022-11-02 20:20:50,714 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [579826522] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:20:50,715 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:20:50,715 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:20:50,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193600139] [2022-11-02 20:20:50,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:20:50,716 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:20:50,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:20:50,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:20:50,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:20:50,717 INFO L87 Difference]: Start difference. First operand 1674 states and 1822 transitions. Second operand has 5 states, 4 states have (on average 14.5) internal successors, (58), 5 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:20:56,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:20:56,405 INFO L93 Difference]: Finished difference Result 1673 states and 1821 transitions. [2022-11-02 20:20:56,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:20:56,405 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 14.5) internal successors, (58), 5 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2022-11-02 20:20:56,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:20:56,411 INFO L225 Difference]: With dead ends: 1673 [2022-11-02 20:20:56,411 INFO L226 Difference]: Without dead ends: 1673 [2022-11-02 20:20:56,411 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:20:56,412 INFO L413 NwaCegarLoop]: 1635 mSDtfsCounter, 4 mSDsluCounter, 2525 mSDsCounter, 0 mSdLazyCounter, 2385 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 4160 SdHoareTripleChecker+Invalid, 2386 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2385 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2022-11-02 20:20:56,412 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 4160 Invalid, 2386 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2385 Invalid, 0 Unknown, 0 Unchecked, 5.6s Time] [2022-11-02 20:20:56,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1673 states. [2022-11-02 20:20:56,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1673 to 1673. [2022-11-02 20:20:56,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1673 states, 976 states have (on average 1.8432377049180328) internal successors, (1799), 1664 states have internal predecessors, (1799), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2022-11-02 20:20:56,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1673 states to 1673 states and 1821 transitions. [2022-11-02 20:20:56,437 INFO L78 Accepts]: Start accepts. Automaton has 1673 states and 1821 transitions. Word has length 58 [2022-11-02 20:20:56,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:20:56,438 INFO L495 AbstractCegarLoop]: Abstraction has 1673 states and 1821 transitions. [2022-11-02 20:20:56,438 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 14.5) internal successors, (58), 5 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:20:56,438 INFO L276 IsEmpty]: Start isEmpty. Operand 1673 states and 1821 transitions. [2022-11-02 20:20:56,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-11-02 20:20:56,439 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:20:56,439 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, 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] [2022-11-02 20:20:56,458 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_412a3d22-2068-4227-83e8-046ca4d2a942/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (13)] Ended with exit code 0 [2022-11-02 20:20:56,653 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_412a3d22-2068-4227-83e8-046ca4d2a942/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:20:56,654 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr67REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 929 more)] === [2022-11-02 20:20:56,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:20:56,654 INFO L85 PathProgramCache]: Analyzing trace with hash -1993678056, now seen corresponding path program 1 times [2022-11-02 20:20:56,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:20:56,655 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1466585280] [2022-11-02 20:20:56,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:20:56,655 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:20:56,655 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_412a3d22-2068-4227-83e8-046ca4d2a942/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:20:56,656 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_412a3d22-2068-4227-83e8-046ca4d2a942/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:20:56,660 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_412a3d22-2068-4227-83e8-046ca4d2a942/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2022-11-02 20:20:56,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:20:57,006 INFO L263 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-02 20:20:57,009 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:20:57,022 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 [2022-11-02 20:20:57,051 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 13 treesize of output 9 [2022-11-02 20:20:57,061 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 13 treesize of output 9 [2022-11-02 20:20:57,121 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 21 treesize of output 9 [2022-11-02 20:20:57,130 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 7 [2022-11-02 20:20:57,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:20:57,149 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:20:57,149 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:20:57,149 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1466585280] [2022-11-02 20:20:57,149 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1466585280] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:20:57,149 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:20:57,149 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:20:57,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179823044] [2022-11-02 20:20:57,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:20:57,150 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:20:57,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:20:57,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:20:57,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:20:57,151 INFO L87 Difference]: Start difference. First operand 1673 states and 1821 transitions. Second operand has 5 states, 4 states have (on average 14.5) internal successors, (58), 5 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:21:04,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:21:04,026 INFO L93 Difference]: Finished difference Result 1672 states and 1820 transitions. [2022-11-02 20:21:04,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:21:04,027 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 14.5) internal successors, (58), 5 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2022-11-02 20:21:04,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:21:04,031 INFO L225 Difference]: With dead ends: 1672 [2022-11-02 20:21:04,031 INFO L226 Difference]: Without dead ends: 1672 [2022-11-02 20:21:04,032 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:21:04,035 INFO L413 NwaCegarLoop]: 1635 mSDtfsCounter, 2 mSDsluCounter, 2583 mSDsCounter, 0 mSdLazyCounter, 2325 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 4218 SdHoareTripleChecker+Invalid, 2326 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2325 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.8s IncrementalHoareTripleChecker+Time [2022-11-02 20:21:04,043 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 4218 Invalid, 2326 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2325 Invalid, 0 Unknown, 0 Unchecked, 6.8s Time] [2022-11-02 20:21:04,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1672 states. [2022-11-02 20:21:04,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1672 to 1672. [2022-11-02 20:21:04,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1672 states, 975 states have (on average 1.8441025641025641) internal successors, (1798), 1663 states have internal predecessors, (1798), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2022-11-02 20:21:04,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1672 states to 1672 states and 1820 transitions. [2022-11-02 20:21:04,067 INFO L78 Accepts]: Start accepts. Automaton has 1672 states and 1820 transitions. Word has length 58 [2022-11-02 20:21:04,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:21:04,067 INFO L495 AbstractCegarLoop]: Abstraction has 1672 states and 1820 transitions. [2022-11-02 20:21:04,068 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 14.5) internal successors, (58), 5 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:21:04,068 INFO L276 IsEmpty]: Start isEmpty. Operand 1672 states and 1820 transitions. [2022-11-02 20:21:04,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-11-02 20:21:04,069 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:21:04,069 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, 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] [2022-11-02 20:21:04,090 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_412a3d22-2068-4227-83e8-046ca4d2a942/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2022-11-02 20:21:04,281 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_412a3d22-2068-4227-83e8-046ca4d2a942/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:21:04,281 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 929 more)] === [2022-11-02 20:21:04,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:21:04,281 INFO L85 PathProgramCache]: Analyzing trace with hash 1810601854, now seen corresponding path program 1 times [2022-11-02 20:21:04,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:21:04,282 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [213738289] [2022-11-02 20:21:04,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:21:04,282 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:21:04,282 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_412a3d22-2068-4227-83e8-046ca4d2a942/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:21:04,283 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_412a3d22-2068-4227-83e8-046ca4d2a942/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:21:04,284 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_412a3d22-2068-4227-83e8-046ca4d2a942/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2022-11-02 20:21:04,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:21:04,650 INFO L263 TraceCheckSpWp]: Trace formula consists of 293 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-02 20:21:04,653 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:21:04,677 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:21:04,677 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:21:04,677 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:21:04,677 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [213738289] [2022-11-02 20:21:04,677 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [213738289] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:21:04,678 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:21:04,678 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:21:04,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632902044] [2022-11-02 20:21:04,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:21:04,680 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:21:04,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:21:04,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:21:04,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:21:04,681 INFO L87 Difference]: Start difference. First operand 1672 states and 1820 transitions. Second operand has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 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) [2022-11-02 20:21:04,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:21:04,753 INFO L93 Difference]: Finished difference Result 1675 states and 1825 transitions. [2022-11-02 20:21:04,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 20:21:04,754 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 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 66 [2022-11-02 20:21:04,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:21:04,759 INFO L225 Difference]: With dead ends: 1675 [2022-11-02 20:21:04,759 INFO L226 Difference]: Without dead ends: 1675 [2022-11-02 20:21:04,760 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:21:04,760 INFO L413 NwaCegarLoop]: 1634 mSDtfsCounter, 2 mSDsluCounter, 3260 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 4894 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:21:04,761 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 4894 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:21:04,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1675 states. [2022-11-02 20:21:04,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1675 to 1675. [2022-11-02 20:21:04,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1675 states, 977 states have (on average 1.8433981576253837) internal successors, (1801), 1666 states have internal predecessors, (1801), 11 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (13), 7 states have call predecessors, (13), 11 states have call successors, (13) [2022-11-02 20:21:04,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1675 states to 1675 states and 1825 transitions. [2022-11-02 20:21:04,790 INFO L78 Accepts]: Start accepts. Automaton has 1675 states and 1825 transitions. Word has length 66 [2022-11-02 20:21:04,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:21:04,791 INFO L495 AbstractCegarLoop]: Abstraction has 1675 states and 1825 transitions. [2022-11-02 20:21:04,791 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 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) [2022-11-02 20:21:04,791 INFO L276 IsEmpty]: Start isEmpty. Operand 1675 states and 1825 transitions. [2022-11-02 20:21:04,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-11-02 20:21:04,792 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:21:04,792 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, 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, 1] [2022-11-02 20:21:04,817 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_412a3d22-2068-4227-83e8-046ca4d2a942/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2022-11-02 20:21:05,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_412a3d22-2068-4227-83e8-046ca4d2a942/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:21:05,008 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 929 more)] === [2022-11-02 20:21:05,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:21:05,008 INFO L85 PathProgramCache]: Analyzing trace with hash 279721407, now seen corresponding path program 1 times [2022-11-02 20:21:05,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:21:05,009 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [780988750] [2022-11-02 20:21:05,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:21:05,009 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:21:05,009 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_412a3d22-2068-4227-83e8-046ca4d2a942/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:21:05,013 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_412a3d22-2068-4227-83e8-046ca4d2a942/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:21:05,015 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_412a3d22-2068-4227-83e8-046ca4d2a942/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2022-11-02 20:21:05,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:21:05,354 INFO L263 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-02 20:21:05,358 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:21:05,390 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:21:05,391 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:21:05,501 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:21:05,501 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:21:05,501 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [780988750] [2022-11-02 20:21:05,501 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [780988750] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:21:05,501 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:21:05,502 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2022-11-02 20:21:05,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83709639] [2022-11-02 20:21:05,502 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:21:05,502 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 20:21:05,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:21:05,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 20:21:05,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:21:05,503 INFO L87 Difference]: Start difference. First operand 1675 states and 1825 transitions. Second operand has 8 states, 8 states have (on average 8.625) internal successors, (69), 8 states have internal predecessors, (69), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-02 20:21:05,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:21:05,795 INFO L93 Difference]: Finished difference Result 1687 states and 1843 transitions. [2022-11-02 20:21:05,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-02 20:21:05,796 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.625) internal successors, (69), 8 states have internal predecessors, (69), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 67 [2022-11-02 20:21:05,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:21:05,800 INFO L225 Difference]: With dead ends: 1687 [2022-11-02 20:21:05,801 INFO L226 Difference]: Without dead ends: 1687 [2022-11-02 20:21:05,801 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=94, Unknown=0, NotChecked=0, Total=156 [2022-11-02 20:21:05,802 INFO L413 NwaCegarLoop]: 1634 mSDtfsCounter, 15 mSDsluCounter, 8137 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 9771 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:21:05,802 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 9771 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 20:21:05,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1687 states. [2022-11-02 20:21:05,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1687 to 1685. [2022-11-02 20:21:05,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1685 states, 986 states have (on average 1.841784989858012) internal successors, (1816), 1675 states have internal predecessors, (1816), 11 states have call successors, (11), 3 states have call predecessors, (11), 4 states have return successors, (13), 7 states have call predecessors, (13), 11 states have call successors, (13) [2022-11-02 20:21:05,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1685 states to 1685 states and 1840 transitions. [2022-11-02 20:21:05,832 INFO L78 Accepts]: Start accepts. Automaton has 1685 states and 1840 transitions. Word has length 67 [2022-11-02 20:21:05,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:21:05,833 INFO L495 AbstractCegarLoop]: Abstraction has 1685 states and 1840 transitions. [2022-11-02 20:21:05,833 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.625) internal successors, (69), 8 states have internal predecessors, (69), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-02 20:21:05,833 INFO L276 IsEmpty]: Start isEmpty. Operand 1685 states and 1840 transitions. [2022-11-02 20:21:05,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-11-02 20:21:05,834 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:21:05,834 INFO L195 NwaCegarLoop]: trace histogram [4, 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, 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] [2022-11-02 20:21:05,850 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_412a3d22-2068-4227-83e8-046ca4d2a942/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2022-11-02 20:21:06,049 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_412a3d22-2068-4227-83e8-046ca4d2a942/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:21:06,050 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 929 more)] === [2022-11-02 20:21:06,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:21:06,050 INFO L85 PathProgramCache]: Analyzing trace with hash -431906882, now seen corresponding path program 2 times [2022-11-02 20:21:06,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:21:06,051 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [38098280] [2022-11-02 20:21:06,051 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-02 20:21:06,051 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:21:06,051 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_412a3d22-2068-4227-83e8-046ca4d2a942/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:21:06,052 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_412a3d22-2068-4227-83e8-046ca4d2a942/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:21:06,067 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_412a3d22-2068-4227-83e8-046ca4d2a942/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2022-11-02 20:21:06,629 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-02 20:21:06,630 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:21:06,650 INFO L263 TraceCheckSpWp]: Trace formula consists of 337 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-02 20:21:06,652 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:21:06,727 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:21:06,727 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:21:06,969 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:21:06,970 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:21:06,970 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [38098280] [2022-11-02 20:21:06,970 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [38098280] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:21:06,970 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:21:06,970 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2022-11-02 20:21:06,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562395802] [2022-11-02 20:21:06,971 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:21:06,971 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-02 20:21:06,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:21:06,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-02 20:21:06,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2022-11-02 20:21:06,972 INFO L87 Difference]: Start difference. First operand 1685 states and 1840 transitions. Second operand has 14 states, 14 states have (on average 5.357142857142857) internal successors, (75), 14 states have internal predecessors, (75), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-02 20:21:08,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:21:08,010 INFO L93 Difference]: Finished difference Result 1706 states and 1872 transitions. [2022-11-02 20:21:08,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-02 20:21:08,011 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.357142857142857) internal successors, (75), 14 states have internal predecessors, (75), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 70 [2022-11-02 20:21:08,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:21:08,015 INFO L225 Difference]: With dead ends: 1706 [2022-11-02 20:21:08,016 INFO L226 Difference]: Without dead ends: 1702 [2022-11-02 20:21:08,016 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=257, Invalid=499, Unknown=0, NotChecked=0, Total=756 [2022-11-02 20:21:08,017 INFO L413 NwaCegarLoop]: 1637 mSDtfsCounter, 57 mSDsluCounter, 9790 mSDsCounter, 0 mSdLazyCounter, 247 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 11427 SdHoareTripleChecker+Invalid, 303 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 247 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-02 20:21:08,017 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 11427 Invalid, 303 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 247 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-02 20:21:08,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1702 states. [2022-11-02 20:21:08,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1702 to 1694. [2022-11-02 20:21:08,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1694 states, 995 states have (on average 1.8371859296482411) internal successors, (1828), 1684 states have internal predecessors, (1828), 11 states have call successors, (11), 3 states have call predecessors, (11), 4 states have return successors, (13), 7 states have call predecessors, (13), 11 states have call successors, (13) [2022-11-02 20:21:08,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1694 states to 1694 states and 1852 transitions. [2022-11-02 20:21:08,062 INFO L78 Accepts]: Start accepts. Automaton has 1694 states and 1852 transitions. Word has length 70 [2022-11-02 20:21:08,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:21:08,062 INFO L495 AbstractCegarLoop]: Abstraction has 1694 states and 1852 transitions. [2022-11-02 20:21:08,063 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.357142857142857) internal successors, (75), 14 states have internal predecessors, (75), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-02 20:21:08,063 INFO L276 IsEmpty]: Start isEmpty. Operand 1694 states and 1852 transitions. [2022-11-02 20:21:08,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-11-02 20:21:08,068 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:21:08,068 INFO L195 NwaCegarLoop]: trace histogram [10, 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, 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] [2022-11-02 20:21:08,091 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_412a3d22-2068-4227-83e8-046ca4d2a942/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2022-11-02 20:21:08,285 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_412a3d22-2068-4227-83e8-046ca4d2a942/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:21:08,286 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 929 more)] === [2022-11-02 20:21:08,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:21:08,286 INFO L85 PathProgramCache]: Analyzing trace with hash -1909247970, now seen corresponding path program 3 times [2022-11-02 20:21:08,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:21:08,287 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [145592179] [2022-11-02 20:21:08,287 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-02 20:21:08,287 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:21:08,287 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_412a3d22-2068-4227-83e8-046ca4d2a942/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:21:08,289 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_412a3d22-2068-4227-83e8-046ca4d2a942/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:21:08,295 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_412a3d22-2068-4227-83e8-046ca4d2a942/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2022-11-02 20:21:09,142 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-11-02 20:21:09,142 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:21:09,163 INFO L263 TraceCheckSpWp]: Trace formula consists of 403 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-02 20:21:09,165 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:21:09,356 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:21:09,356 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:21:10,350 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:21:10,350 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:21:10,350 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [145592179] [2022-11-02 20:21:10,350 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [145592179] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:21:10,350 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:21:10,350 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 26 [2022-11-02 20:21:10,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204092193] [2022-11-02 20:21:10,351 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:21:10,351 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-11-02 20:21:10,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:21:10,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-11-02 20:21:10,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=457, Unknown=0, NotChecked=0, Total=650 [2022-11-02 20:21:10,352 INFO L87 Difference]: Start difference. First operand 1694 states and 1852 transitions. Second operand has 26 states, 26 states have (on average 3.3461538461538463) internal successors, (87), 26 states have internal predecessors, (87), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-02 20:21:15,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:21:15,218 INFO L93 Difference]: Finished difference Result 1736 states and 1928 transitions. [2022-11-02 20:21:15,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-11-02 20:21:15,219 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.3461538461538463) internal successors, (87), 26 states have internal predecessors, (87), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 76 [2022-11-02 20:21:15,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:21:15,223 INFO L225 Difference]: With dead ends: 1736 [2022-11-02 20:21:15,223 INFO L226 Difference]: Without dead ends: 1730 [2022-11-02 20:21:15,224 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 229 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=793, Invalid=1559, Unknown=0, NotChecked=0, Total=2352 [2022-11-02 20:21:15,225 INFO L413 NwaCegarLoop]: 1641 mSDtfsCounter, 129 mSDsluCounter, 17996 mSDsCounter, 0 mSdLazyCounter, 938 mSolverCounterSat, 115 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 19637 SdHoareTripleChecker+Invalid, 1053 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 115 IncrementalHoareTripleChecker+Valid, 938 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-11-02 20:21:15,225 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [129 Valid, 19637 Invalid, 1053 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [115 Valid, 938 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-11-02 20:21:15,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1730 states. [2022-11-02 20:21:15,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1730 to 1712. [2022-11-02 20:21:15,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1712 states, 1013 states have (on average 1.8272458045409674) internal successors, (1851), 1702 states have internal predecessors, (1851), 11 states have call successors, (11), 3 states have call predecessors, (11), 4 states have return successors, (13), 7 states have call predecessors, (13), 11 states have call successors, (13) [2022-11-02 20:21:15,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1712 states to 1712 states and 1875 transitions. [2022-11-02 20:21:15,253 INFO L78 Accepts]: Start accepts. Automaton has 1712 states and 1875 transitions. Word has length 76 [2022-11-02 20:21:15,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:21:15,253 INFO L495 AbstractCegarLoop]: Abstraction has 1712 states and 1875 transitions. [2022-11-02 20:21:15,253 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 3.3461538461538463) internal successors, (87), 26 states have internal predecessors, (87), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-02 20:21:15,254 INFO L276 IsEmpty]: Start isEmpty. Operand 1712 states and 1875 transitions. [2022-11-02 20:21:15,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-11-02 20:21:15,254 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:21:15,255 INFO L195 NwaCegarLoop]: trace histogram [22, 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, 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] [2022-11-02 20:21:15,279 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_412a3d22-2068-4227-83e8-046ca4d2a942/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2022-11-02 20:21:15,472 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_412a3d22-2068-4227-83e8-046ca4d2a942/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:21:15,473 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 929 more)] === [2022-11-02 20:21:15,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:21:15,473 INFO L85 PathProgramCache]: Analyzing trace with hash -2142570274, now seen corresponding path program 4 times [2022-11-02 20:21:15,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:21:15,474 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1172985504] [2022-11-02 20:21:15,474 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-02 20:21:15,474 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:21:15,474 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_412a3d22-2068-4227-83e8-046ca4d2a942/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:21:15,475 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_412a3d22-2068-4227-83e8-046ca4d2a942/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:21:15,476 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_412a3d22-2068-4227-83e8-046ca4d2a942/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2022-11-02 20:21:15,898 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-02 20:21:15,898 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:21:15,921 INFO L263 TraceCheckSpWp]: Trace formula consists of 535 conjuncts, 25 conjunts are in the unsatisfiable core [2022-11-02 20:21:15,924 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:21:16,386 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:21:16,386 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:21:18,951 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:21:18,951 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:21:18,952 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1172985504] [2022-11-02 20:21:18,952 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1172985504] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:21:18,952 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:21:18,952 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 50 [2022-11-02 20:21:18,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094284025] [2022-11-02 20:21:18,953 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:21:18,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2022-11-02 20:21:18,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:21:18,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2022-11-02 20:21:18,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=672, Invalid=1778, Unknown=0, NotChecked=0, Total=2450 [2022-11-02 20:21:18,956 INFO L87 Difference]: Start difference. First operand 1712 states and 1875 transitions. Second operand has 50 states, 50 states have (on average 2.22) internal successors, (111), 50 states have internal predecessors, (111), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-02 20:21:37,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:21:37,539 INFO L93 Difference]: Finished difference Result 1792 states and 2008 transitions. [2022-11-02 20:21:37,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2022-11-02 20:21:37,541 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 2.22) internal successors, (111), 50 states have internal predecessors, (111), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 88 [2022-11-02 20:21:37,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:21:37,545 INFO L225 Difference]: With dead ends: 1792 [2022-11-02 20:21:37,545 INFO L226 Difference]: Without dead ends: 1788 [2022-11-02 20:21:37,551 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 239 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1383 ImplicationChecksByTransitivity, 15.2s TimeCoverageRelationStatistics Valid=3791, Invalid=9319, Unknown=0, NotChecked=0, Total=13110 [2022-11-02 20:21:37,552 INFO L413 NwaCegarLoop]: 1654 mSDtfsCounter, 413 mSDsluCounter, 37931 mSDsCounter, 0 mSdLazyCounter, 2983 mSolverCounterSat, 384 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 413 SdHoareTripleChecker+Valid, 39585 SdHoareTripleChecker+Invalid, 3367 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 384 IncrementalHoareTripleChecker+Valid, 2983 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2022-11-02 20:21:37,553 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [413 Valid, 39585 Invalid, 3367 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [384 Valid, 2983 Invalid, 0 Unknown, 0 Unchecked, 5.4s Time] [2022-11-02 20:21:37,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1788 states. [2022-11-02 20:21:37,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1788 to 1746. [2022-11-02 20:21:37,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1746 states, 1047 states have (on average 1.8118433619866285) internal successors, (1897), 1736 states have internal predecessors, (1897), 11 states have call successors, (11), 3 states have call predecessors, (11), 4 states have return successors, (13), 7 states have call predecessors, (13), 11 states have call successors, (13) [2022-11-02 20:21:37,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1746 states to 1746 states and 1921 transitions. [2022-11-02 20:21:37,591 INFO L78 Accepts]: Start accepts. Automaton has 1746 states and 1921 transitions. Word has length 88 [2022-11-02 20:21:37,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:21:37,592 INFO L495 AbstractCegarLoop]: Abstraction has 1746 states and 1921 transitions. [2022-11-02 20:21:37,592 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 2.22) internal successors, (111), 50 states have internal predecessors, (111), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-02 20:21:37,592 INFO L276 IsEmpty]: Start isEmpty. Operand 1746 states and 1921 transitions. [2022-11-02 20:21:37,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-11-02 20:21:37,593 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:21:37,594 INFO L195 NwaCegarLoop]: trace histogram [44, 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, 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] [2022-11-02 20:21:37,616 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_412a3d22-2068-4227-83e8-046ca4d2a942/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2022-11-02 20:21:37,812 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_412a3d22-2068-4227-83e8-046ca4d2a942/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:21:37,812 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 929 more)] === [2022-11-02 20:21:37,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:21:37,812 INFO L85 PathProgramCache]: Analyzing trace with hash 286593598, now seen corresponding path program 5 times [2022-11-02 20:21:37,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:21:37,813 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [26355350] [2022-11-02 20:21:37,813 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-02 20:21:37,813 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:21:37,813 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_412a3d22-2068-4227-83e8-046ca4d2a942/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:21:37,814 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_412a3d22-2068-4227-83e8-046ca4d2a942/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:21:37,815 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_412a3d22-2068-4227-83e8-046ca4d2a942/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2022-11-02 20:21:39,384 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 23 check-sat command(s) [2022-11-02 20:21:39,385 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:21:39,424 INFO L263 TraceCheckSpWp]: Trace formula consists of 777 conjuncts, 59 conjunts are in the unsatisfiable core [2022-11-02 20:21:39,434 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:21:39,443 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 [2022-11-02 20:21:39,599 INFO L356 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-02 20:21:39,600 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2022-11-02 20:21:39,631 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-02 20:21:39,736 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 24 treesize of output 12 [2022-11-02 20:21:41,954 INFO L356 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-02 20:21:41,955 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 37 [2022-11-02 20:21:42,009 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 33 treesize of output 15 [2022-11-02 20:21:42,060 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2022-11-02 20:21:42,060 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:21:42,422 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1689 (Array (_ BitVec 32) (_ BitVec 32)))) (= (bvadd (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_1689) |c_ULTIMATE.start_main_~user~0#1.base|) (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (_ bv1 1)) (_ bv0 1))) is different from false [2022-11-02 20:21:42,425 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:21:42,425 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [26355350] [2022-11-02 20:21:42,425 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [26355350] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:21:42,425 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2146357051] [2022-11-02 20:21:42,426 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-02 20:21:42,426 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-02 20:21:42,426 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_412a3d22-2068-4227-83e8-046ca4d2a942/bin/uautomizer-Dbtcem3rbc/cvc4 [2022-11-02 20:21:42,428 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_412a3d22-2068-4227-83e8-046ca4d2a942/bin/uautomizer-Dbtcem3rbc/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-02 20:21:42,431 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_412a3d22-2068-4227-83e8-046ca4d2a942/bin/uautomizer-Dbtcem3rbc/cvc4 --incremental --print-success --lang smt (21)] Waiting until timeout for monitored process [2022-11-02 20:23:03,338 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 23 check-sat command(s) [2022-11-02 20:23:03,338 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:23:03,595 INFO L263 TraceCheckSpWp]: Trace formula consists of 777 conjuncts, 60 conjunts are in the unsatisfiable core [2022-11-02 20:23:03,605 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:23:03,612 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 [2022-11-02 20:23:03,774 INFO L356 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-02 20:23:03,775 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2022-11-02 20:23:03,799 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-02 20:23:03,879 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 24 treesize of output 12 [2022-11-02 20:23:05,974 INFO L356 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-02 20:23:05,975 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 37 [2022-11-02 20:23:06,033 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 33 treesize of output 15 [2022-11-02 20:23:06,043 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2022-11-02 20:23:06,043 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:23:06,418 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2146357051] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:23:06,418 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:23:06,419 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2022-11-02 20:23:06,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913059700] [2022-11-02 20:23:06,419 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:23:06,420 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-02 20:23:06,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:23:06,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-02 20:23:06,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=93, Unknown=12, NotChecked=20, Total=156 [2022-11-02 20:23:06,421 INFO L87 Difference]: Start difference. First operand 1746 states and 1921 transitions. Second operand has 9 states, 7 states have (on average 9.428571428571429) internal successors, (66), 9 states have internal predecessors, (66), 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) [2022-11-02 20:23:15,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:23:15,142 INFO L93 Difference]: Finished difference Result 2069 states and 2231 transitions. [2022-11-02 20:23:15,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-02 20:23:15,142 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 9.428571428571429) internal successors, (66), 9 states have internal predecessors, (66), 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 110 [2022-11-02 20:23:15,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:23:15,147 INFO L225 Difference]: With dead ends: 2069 [2022-11-02 20:23:15,148 INFO L226 Difference]: Without dead ends: 2065 [2022-11-02 20:23:15,162 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 125 SyntacticMatches, 90 SemanticMatches, 13 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 291 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=44, Invalid=128, Unknown=14, NotChecked=24, Total=210 [2022-11-02 20:23:15,163 INFO L413 NwaCegarLoop]: 1056 mSDtfsCounter, 1139 mSDsluCounter, 4752 mSDsCounter, 0 mSdLazyCounter, 3406 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1149 SdHoareTripleChecker+Valid, 5808 SdHoareTripleChecker+Invalid, 6491 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 3406 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 3073 IncrementalHoareTripleChecker+Unchecked, 8.5s IncrementalHoareTripleChecker+Time [2022-11-02 20:23:15,163 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1149 Valid, 5808 Invalid, 6491 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 3406 Invalid, 0 Unknown, 3073 Unchecked, 8.5s Time] [2022-11-02 20:23:15,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2065 states. [2022-11-02 20:23:15,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2065 to 1794. [2022-11-02 20:23:15,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1794 states, 1095 states have (on average 1.7762557077625571) internal successors, (1945), 1783 states have internal predecessors, (1945), 11 states have call successors, (11), 4 states have call predecessors, (11), 5 states have return successors, (13), 7 states have call predecessors, (13), 11 states have call successors, (13) [2022-11-02 20:23:15,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1794 states to 1794 states and 1969 transitions. [2022-11-02 20:23:15,192 INFO L78 Accepts]: Start accepts. Automaton has 1794 states and 1969 transitions. Word has length 110 [2022-11-02 20:23:15,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:23:15,193 INFO L495 AbstractCegarLoop]: Abstraction has 1794 states and 1969 transitions. [2022-11-02 20:23:15,193 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 9.428571428571429) internal successors, (66), 9 states have internal predecessors, (66), 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) [2022-11-02 20:23:15,193 INFO L276 IsEmpty]: Start isEmpty. Operand 1794 states and 1969 transitions. [2022-11-02 20:23:15,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-11-02 20:23:15,195 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:23:15,195 INFO L195 NwaCegarLoop]: trace histogram [44, 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, 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] [2022-11-02 20:23:15,242 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_412a3d22-2068-4227-83e8-046ca4d2a942/bin/uautomizer-Dbtcem3rbc/cvc4 --incremental --print-success --lang smt (21)] Forceful destruction successful, exit code 0 [2022-11-02 20:23:15,434 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_412a3d22-2068-4227-83e8-046ca4d2a942/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2022-11-02 20:23:15,619 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_412a3d22-2068-4227-83e8-046ca4d2a942/bin/uautomizer-Dbtcem3rbc/cvc4 --incremental --print-success --lang smt,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_412a3d22-2068-4227-83e8-046ca4d2a942/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:23:15,619 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr71REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 929 more)] === [2022-11-02 20:23:15,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:23:15,620 INFO L85 PathProgramCache]: Analyzing trace with hash 286593599, now seen corresponding path program 1 times [2022-11-02 20:23:15,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:23:15,620 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1644770985] [2022-11-02 20:23:15,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:23:15,621 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:23:15,621 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_412a3d22-2068-4227-83e8-046ca4d2a942/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:23:15,622 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_412a3d22-2068-4227-83e8-046ca4d2a942/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:23:15,630 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_412a3d22-2068-4227-83e8-046ca4d2a942/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2022-11-02 20:23:16,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:23:16,569 INFO L263 TraceCheckSpWp]: Trace formula consists of 777 conjuncts, 110 conjunts are in the unsatisfiable core [2022-11-02 20:23:16,586 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:23:16,590 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 [2022-11-02 20:23:16,744 INFO L356 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-02 20:23:16,744 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 [2022-11-02 20:23:16,756 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 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 [2022-11-02 20:23:16,784 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 13 treesize of output 9 [2022-11-02 20:23:16,797 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-02 20:23:16,949 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 22 treesize of output 10 [2022-11-02 20:23:16,955 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 9 treesize of output 3 [2022-11-02 20:23:17,027 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_2499 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2499))) (exists ((v_ArrVal_2498 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2498))) (exists ((v_arrayElimCell_19 (_ BitVec 32))) (= (select |c_#length| v_arrayElimCell_19) (_ bv44 32)))) is different from true [2022-11-02 20:23:17,042 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_arrayElimCell_19 (_ BitVec 32))) (= (select |c_#length| v_arrayElimCell_19) (_ bv44 32))) (exists ((v_ArrVal_2500 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2500))) (exists ((v_ArrVal_2501 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2501) |c_#memory_$Pointer$.base|))) is different from true [2022-11-02 20:23:17,116 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_2505 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2505) |c_#memory_$Pointer$.base|)) (exists ((v_arrayElimCell_19 (_ BitVec 32))) (= (select |c_#length| v_arrayElimCell_19) (_ bv44 32))) (exists ((v_ArrVal_2504 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2504) |c_#memory_$Pointer$.offset|))) is different from true [2022-11-02 20:23:17,133 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_arrayElimCell_19 (_ BitVec 32))) (= (select |c_#length| v_arrayElimCell_19) (_ bv44 32))) (exists ((v_ArrVal_2507 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2507) |c_#memory_$Pointer$.base|)) (exists ((v_ArrVal_2506 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2506) |c_#memory_$Pointer$.offset|))) is different from true [2022-11-02 20:23:17,150 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_2509 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2509) |c_#memory_$Pointer$.base|)) (exists ((v_arrayElimCell_19 (_ BitVec 32))) (= (select |c_#length| v_arrayElimCell_19) (_ bv44 32))) (exists ((v_ArrVal_2508 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2508) |c_#memory_$Pointer$.offset|))) is different from true [2022-11-02 20:23:17,166 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_2511 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2511) |c_#memory_$Pointer$.base|)) (exists ((v_arrayElimCell_19 (_ BitVec 32))) (= (select |c_#length| v_arrayElimCell_19) (_ bv44 32))) (exists ((v_ArrVal_2510 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2510) |c_#memory_$Pointer$.offset|))) is different from true [2022-11-02 20:23:17,183 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_2512 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2512) |c_#memory_$Pointer$.offset|)) (exists ((v_arrayElimCell_19 (_ BitVec 32))) (= (select |c_#length| v_arrayElimCell_19) (_ bv44 32))) (exists ((v_ArrVal_2513 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2513)))) is different from true [2022-11-02 20:23:17,199 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_2514 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2514))) (exists ((v_ArrVal_2515 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2515))) (exists ((v_arrayElimCell_19 (_ BitVec 32))) (= (select |c_#length| v_arrayElimCell_19) (_ bv44 32)))) is different from true [2022-11-02 20:23:17,262 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_2519 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2519))) (exists ((v_ArrVal_2518 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2518))) (exists ((v_arrayElimCell_19 (_ BitVec 32))) (= (select |c_#length| v_arrayElimCell_19) (_ bv44 32)))) is different from true [2022-11-02 20:23:17,278 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_arrayElimCell_19 (_ BitVec 32))) (= (select |c_#length| v_arrayElimCell_19) (_ bv44 32))) (exists ((v_ArrVal_2520 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2520))) (exists ((v_ArrVal_2521 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2521)))) is different from true [2022-11-02 20:23:17,336 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_2525 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2525))) (exists ((v_ArrVal_2524 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2524))) (exists ((v_arrayElimCell_19 (_ BitVec 32))) (= (select |c_#length| v_arrayElimCell_19) (_ bv44 32)))) is different from true [2022-11-02 20:23:17,352 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_arrayElimCell_19 (_ BitVec 32))) (= (select |c_#length| v_arrayElimCell_19) (_ bv44 32))) (exists ((v_ArrVal_2526 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2526))) (exists ((v_ArrVal_2527 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2527)))) is different from true [2022-11-02 20:23:17,368 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_2528 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2528) |c_#memory_$Pointer$.offset|)) (exists ((v_arrayElimCell_19 (_ BitVec 32))) (= (select |c_#length| v_arrayElimCell_19) (_ bv44 32))) (exists ((v_ArrVal_2529 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2529) |c_#memory_$Pointer$.base|))) is different from true [2022-11-02 20:23:17,385 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_2530 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2530) |c_#memory_$Pointer$.base|)) (exists ((v_arrayElimCell_19 (_ BitVec 32))) (= (select |c_#length| v_arrayElimCell_19) (_ bv44 32))) (exists ((v_ArrVal_2531 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2531)))) is different from true [2022-11-02 20:23:17,402 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_arrayElimCell_19 (_ BitVec 32))) (= (select |c_#length| v_arrayElimCell_19) (_ bv44 32))) (exists ((v_ArrVal_2532 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2532))) (exists ((v_ArrVal_2533 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2533)))) is different from true [2022-11-02 20:23:17,420 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_2535 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2535) |c_#memory_$Pointer$.offset|)) (exists ((v_arrayElimCell_19 (_ BitVec 32))) (= (select |c_#length| v_arrayElimCell_19) (_ bv44 32))) (exists ((v_ArrVal_2534 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2534)))) is different from true [2022-11-02 20:23:17,438 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_2537 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2537) |c_#memory_$Pointer$.offset|)) (exists ((v_arrayElimCell_19 (_ BitVec 32))) (= (select |c_#length| v_arrayElimCell_19) (_ bv44 32))) (exists ((v_ArrVal_2536 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2536)))) is different from true [2022-11-02 20:23:17,541 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_2543 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2543))) (exists ((v_ArrVal_2542 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2542))) (exists ((v_arrayElimCell_19 (_ BitVec 32))) (= (select |c_#length| v_arrayElimCell_19) (_ bv44 32)))) is different from true [2022-11-02 20:23:17,615 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_2546 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2546) |c_#memory_$Pointer$.base|)) (exists ((v_ArrVal_2547 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2547))) (exists ((v_arrayElimCell_19 (_ BitVec 32))) (= (select |c_#length| v_arrayElimCell_19) (_ bv44 32)))) is different from true [2022-11-02 20:23:17,631 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_2548 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2548) |c_#memory_$Pointer$.offset|)) (exists ((v_arrayElimCell_19 (_ BitVec 32))) (= (select |c_#length| v_arrayElimCell_19) (_ bv44 32))) (exists ((v_ArrVal_2549 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2549) |c_#memory_$Pointer$.base|))) is different from true [2022-11-02 20:23:17,647 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_arrayElimCell_19 (_ BitVec 32))) (= (select |c_#length| v_arrayElimCell_19) (_ bv44 32))) (exists ((v_ArrVal_2551 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2551))) (exists ((v_ArrVal_2550 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2550) |c_#memory_$Pointer$.offset|))) is different from true [2022-11-02 20:23:17,663 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_arrayElimCell_19 (_ BitVec 32))) (= (select |c_#length| v_arrayElimCell_19) (_ bv44 32))) (exists ((v_ArrVal_2553 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2553))) (exists ((v_ArrVal_2552 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2552)))) is different from true [2022-11-02 20:23:17,679 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_2554 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2554))) (exists ((v_ArrVal_2555 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2555))) (exists ((v_arrayElimCell_19 (_ BitVec 32))) (= (select |c_#length| v_arrayElimCell_19) (_ bv44 32)))) is different from true [2022-11-02 20:23:17,695 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_arrayElimCell_19 (_ BitVec 32))) (= (select |c_#length| v_arrayElimCell_19) (_ bv44 32))) (exists ((v_ArrVal_2557 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2557))) (exists ((v_ArrVal_2556 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2556) |c_#memory_$Pointer$.base|))) is different from true [2022-11-02 20:23:17,710 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_2559 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2559))) (exists ((v_arrayElimCell_19 (_ BitVec 32))) (= (select |c_#length| v_arrayElimCell_19) (_ bv44 32))) (exists ((v_ArrVal_2558 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2558)))) is different from true [2022-11-02 20:23:17,725 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_2561 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2561) |c_#memory_$Pointer$.base|)) (exists ((v_ArrVal_2560 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2560) |c_#memory_$Pointer$.offset|)) (exists ((v_arrayElimCell_19 (_ BitVec 32))) (= (select |c_#length| v_arrayElimCell_19) (_ bv44 32)))) is different from true [2022-11-02 20:23:17,827 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_2567 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2567))) (exists ((v_arrayElimCell_19 (_ BitVec 32))) (= (select |c_#length| v_arrayElimCell_19) (_ bv44 32))) (exists ((v_ArrVal_2566 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2566)))) is different from true [2022-11-02 20:23:17,924 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_2573 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2573))) (exists ((v_arrayElimCell_19 (_ BitVec 32))) (= (select |c_#length| v_arrayElimCell_19) (_ bv44 32))) (exists ((v_ArrVal_2572 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2572) |c_#memory_$Pointer$.offset|))) is different from true [2022-11-02 20:23:17,940 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_2574 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2574) |c_#memory_$Pointer$.base|)) (exists ((v_ArrVal_2575 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2575) |c_#memory_$Pointer$.offset|)) (exists ((v_arrayElimCell_19 (_ BitVec 32))) (= (select |c_#length| v_arrayElimCell_19) (_ bv44 32)))) is different from true [2022-11-02 20:23:17,998 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_2578 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2578))) (exists ((v_ArrVal_2579 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2579) |c_#memory_$Pointer$.base|)) (exists ((v_arrayElimCell_19 (_ BitVec 32))) (= (select |c_#length| v_arrayElimCell_19) (_ bv44 32)))) is different from true [2022-11-02 20:23:18,015 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_arrayElimCell_19 (_ BitVec 32))) (= (select |c_#length| v_arrayElimCell_19) (_ bv44 32))) (exists ((v_ArrVal_2581 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2581))) (exists ((v_ArrVal_2580 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2580)))) is different from true [2022-11-02 20:23:18,034 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_arrayElimCell_19 (_ BitVec 32))) (= (select |c_#length| v_arrayElimCell_19) (_ bv44 32))) (exists ((v_ArrVal_2583 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2583))) (exists ((v_ArrVal_2582 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2582)))) is different from true [2022-11-02 20:23:18,051 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_2585 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2585))) (exists ((v_ArrVal_2584 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2584))) (exists ((v_arrayElimCell_19 (_ BitVec 32))) (= (select |c_#length| v_arrayElimCell_19) (_ bv44 32)))) is different from true [2022-11-02 20:23:18,104 INFO L356 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-02 20:23:18,104 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 46 treesize of output 45 [2022-11-02 20:23:18,115 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 22 treesize of output 24 [2022-11-02 20:23:18,169 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 31 treesize of output 13 [2022-11-02 20:23:18,178 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 19 treesize of output 7 [2022-11-02 20:23:18,217 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 55 trivial. 924 not checked. [2022-11-02 20:23:18,218 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:23:19,331 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_2677 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2676 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_2676) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) (_ bv20 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_2677) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))) (forall ((v_ArrVal_2676 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_2676) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0))) (bvule (bvadd (_ bv16 32) .cse1) (bvadd .cse1 (_ bv20 32))))))) is different from false [2022-11-02 20:23:19,344 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:23:19,344 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1644770985] [2022-11-02 20:23:19,344 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1644770985] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:23:19,344 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1419265445] [2022-11-02 20:23:19,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:23:19,345 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-02 20:23:19,345 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_412a3d22-2068-4227-83e8-046ca4d2a942/bin/uautomizer-Dbtcem3rbc/cvc4 [2022-11-02 20:23:19,347 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_412a3d22-2068-4227-83e8-046ca4d2a942/bin/uautomizer-Dbtcem3rbc/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-02 20:23:19,366 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_412a3d22-2068-4227-83e8-046ca4d2a942/bin/uautomizer-Dbtcem3rbc/cvc4 --incremental --print-success --lang smt (23)] Waiting until timeout for monitored process