./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test4-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bcdd93f-c9b1-4586-a8e2-97e8a1d555a8/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bcdd93f-c9b1-4586-a8e2-97e8a1d555a8/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_4bcdd93f-c9b1-4586-a8e2-97e8a1d555a8/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bcdd93f-c9b1-4586-a8e2-97e8a1d555a8/bin/uautomizer-Dbtcem3rbc/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test4-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bcdd93f-c9b1-4586-a8e2-97e8a1d555a8/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_4bcdd93f-c9b1-4586-a8e2-97e8a1d555a8/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 08dbe1d8baf218c90d79c7aa96b8d857526ff0e474f0acb076b8cd9ca4d11ff2 --- 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 20:54:19,945 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 20:54:19,947 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 20:54:20,005 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 20:54:20,006 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 20:54:20,011 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 20:54:20,013 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 20:54:20,018 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 20:54:20,021 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 20:54:20,027 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 20:54:20,029 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 20:54:20,031 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 20:54:20,032 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 20:54:20,036 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 20:54:20,038 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 20:54:20,040 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 20:54:20,042 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 20:54:20,043 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 20:54:20,045 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 20:54:20,055 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 20:54:20,057 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 20:54:20,058 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 20:54:20,062 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 20:54:20,063 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 20:54:20,073 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 20:54:20,073 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 20:54:20,074 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 20:54:20,076 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 20:54:20,076 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 20:54:20,079 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 20:54:20,080 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 20:54:20,081 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 20:54:20,083 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 20:54:20,085 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 20:54:20,086 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 20:54:20,086 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 20:54:20,087 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 20:54:20,088 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 20:54:20,088 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 20:54:20,089 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 20:54:20,090 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 20:54:20,091 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bcdd93f-c9b1-4586-a8e2-97e8a1d555a8/bin/uautomizer-Dbtcem3rbc/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-11-02 20:54:20,126 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 20:54:20,129 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 20:54:20,130 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 20:54:20,130 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 20:54:20,131 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 20:54:20,131 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 20:54:20,132 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 20:54:20,133 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 20:54:20,133 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 20:54:20,133 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 20:54:20,135 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-02 20:54:20,135 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-02 20:54:20,135 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 20:54:20,136 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-02 20:54:20,136 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 20:54:20,136 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-02 20:54:20,136 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-02 20:54:20,137 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-02 20:54:20,137 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 20:54:20,137 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-02 20:54:20,138 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-02 20:54:20,138 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 20:54:20,138 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 20:54:20,138 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 20:54:20,139 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 20:54:20,139 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:54:20,141 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 20:54:20,141 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 20:54:20,141 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 20:54:20,142 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 20:54:20,143 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_4bcdd93f-c9b1-4586-a8e2-97e8a1d555a8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bcdd93f-c9b1-4586-a8e2-97e8a1d555a8/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 08dbe1d8baf218c90d79c7aa96b8d857526ff0e474f0acb076b8cd9ca4d11ff2 [2022-11-02 20:54:20,454 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 20:54:20,481 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 20:54:20,484 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 20:54:20,486 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 20:54:20,487 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 20:54:20,488 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bcdd93f-c9b1-4586-a8e2-97e8a1d555a8/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test4-1.i [2022-11-02 20:54:20,566 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bcdd93f-c9b1-4586-a8e2-97e8a1d555a8/bin/uautomizer-Dbtcem3rbc/data/9419f62cb/5147866a42ba49439ffee3d6a575db5c/FLAG9fedd6625 [2022-11-02 20:54:21,303 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 20:54:21,304 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bcdd93f-c9b1-4586-a8e2-97e8a1d555a8/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test4-1.i [2022-11-02 20:54:21,320 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bcdd93f-c9b1-4586-a8e2-97e8a1d555a8/bin/uautomizer-Dbtcem3rbc/data/9419f62cb/5147866a42ba49439ffee3d6a575db5c/FLAG9fedd6625 [2022-11-02 20:54:21,462 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bcdd93f-c9b1-4586-a8e2-97e8a1d555a8/bin/uautomizer-Dbtcem3rbc/data/9419f62cb/5147866a42ba49439ffee3d6a575db5c [2022-11-02 20:54:21,465 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 20:54:21,468 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 20:54:21,475 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 20:54:21,475 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 20:54:21,480 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 20:54:21,481 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:54:21" (1/1) ... [2022-11-02 20:54:21,482 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@67455cd4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:54:21, skipping insertion in model container [2022-11-02 20:54:21,482 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:54:21" (1/1) ... [2022-11-02 20:54:21,490 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 20:54:21,574 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 20:54:22,179 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_4bcdd93f-c9b1-4586-a8e2-97e8a1d555a8/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test4-1.i[33021,33034] [2022-11-02 20:54:22,354 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:54:22,363 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 20:54:22,364 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@2e314023 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:54:22, skipping insertion in model container [2022-11-02 20:54:22,364 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 20:54:22,364 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2022-11-02 20:54:22,366 INFO L158 Benchmark]: Toolchain (without parser) took 897.34ms. Allocated memory is still 102.8MB. Free memory was 71.7MB in the beginning and 67.2MB in the end (delta: 4.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-02 20:54:22,367 INFO L158 Benchmark]: CDTParser took 0.35ms. Allocated memory is still 102.8MB. Free memory was 59.0MB in the beginning and 59.0MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-02 20:54:22,368 INFO L158 Benchmark]: CACSL2BoogieTranslator took 889.27ms. Allocated memory is still 102.8MB. Free memory was 71.4MB in the beginning and 67.2MB in the end (delta: 4.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-02 20:54:22,370 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35ms. Allocated memory is still 102.8MB. Free memory was 59.0MB in the beginning and 59.0MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 889.27ms. Allocated memory is still 102.8MB. Free memory was 71.4MB in the beginning and 67.2MB in the end (delta: 4.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 752]: 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-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bcdd93f-c9b1-4586-a8e2-97e8a1d555a8/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bcdd93f-c9b1-4586-a8e2-97e8a1d555a8/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_4bcdd93f-c9b1-4586-a8e2-97e8a1d555a8/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bcdd93f-c9b1-4586-a8e2-97e8a1d555a8/bin/uautomizer-Dbtcem3rbc/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test4-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bcdd93f-c9b1-4586-a8e2-97e8a1d555a8/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_4bcdd93f-c9b1-4586-a8e2-97e8a1d555a8/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 08dbe1d8baf218c90d79c7aa96b8d857526ff0e474f0acb076b8cd9ca4d11ff2 --- 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 20:54:24,644 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 20:54:24,647 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 20:54:24,694 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 20:54:24,695 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 20:54:24,696 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 20:54:24,698 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 20:54:24,699 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 20:54:24,707 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 20:54:24,713 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 20:54:24,714 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 20:54:24,715 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 20:54:24,715 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 20:54:24,716 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 20:54:24,717 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 20:54:24,719 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 20:54:24,720 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 20:54:24,720 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 20:54:24,722 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 20:54:24,724 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 20:54:24,725 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 20:54:24,732 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 20:54:24,733 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 20:54:24,734 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 20:54:24,744 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 20:54:24,744 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 20:54:24,744 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 20:54:24,746 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 20:54:24,746 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 20:54:24,747 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 20:54:24,747 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 20:54:24,748 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 20:54:24,749 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 20:54:24,750 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 20:54:24,751 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 20:54:24,751 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 20:54:24,752 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 20:54:24,752 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 20:54:24,752 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 20:54:24,761 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 20:54:24,761 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 20:54:24,764 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bcdd93f-c9b1-4586-a8e2-97e8a1d555a8/bin/uautomizer-Dbtcem3rbc/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2022-11-02 20:54:24,800 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 20:54:24,801 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 20:54:24,802 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 20:54:24,803 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 20:54:24,804 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 20:54:24,804 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 20:54:24,805 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 20:54:24,806 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 20:54:24,806 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 20:54:24,806 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 20:54:24,807 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-02 20:54:24,808 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-02 20:54:24,808 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 20:54:24,808 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-02 20:54:24,808 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 20:54:24,808 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-02 20:54:24,809 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-02 20:54:24,809 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-02 20:54:24,809 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 20:54:24,809 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-02 20:54:24,809 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-02 20:54:24,809 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-02 20:54:24,810 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-02 20:54:24,810 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 20:54:24,810 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 20:54:24,810 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 20:54:24,810 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 20:54:24,811 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:54:24,811 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 20:54:24,811 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 20:54:24,811 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-11-02 20:54:24,812 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-02 20:54:24,812 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-02 20:54:24,812 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_4bcdd93f-c9b1-4586-a8e2-97e8a1d555a8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bcdd93f-c9b1-4586-a8e2-97e8a1d555a8/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 08dbe1d8baf218c90d79c7aa96b8d857526ff0e474f0acb076b8cd9ca4d11ff2 [2022-11-02 20:54:25,168 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 20:54:25,192 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 20:54:25,195 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 20:54:25,196 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 20:54:25,197 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 20:54:25,199 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bcdd93f-c9b1-4586-a8e2-97e8a1d555a8/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test4-1.i [2022-11-02 20:54:25,269 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bcdd93f-c9b1-4586-a8e2-97e8a1d555a8/bin/uautomizer-Dbtcem3rbc/data/e95082005/3e41658aa0584728b9e6d843e562faba/FLAG3857a5615 [2022-11-02 20:54:26,009 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 20:54:26,010 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bcdd93f-c9b1-4586-a8e2-97e8a1d555a8/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test4-1.i [2022-11-02 20:54:26,040 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bcdd93f-c9b1-4586-a8e2-97e8a1d555a8/bin/uautomizer-Dbtcem3rbc/data/e95082005/3e41658aa0584728b9e6d843e562faba/FLAG3857a5615 [2022-11-02 20:54:26,179 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bcdd93f-c9b1-4586-a8e2-97e8a1d555a8/bin/uautomizer-Dbtcem3rbc/data/e95082005/3e41658aa0584728b9e6d843e562faba [2022-11-02 20:54:26,182 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 20:54:26,184 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 20:54:26,190 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 20:54:26,190 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 20:54:26,195 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 20:54:26,196 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:54:26" (1/1) ... [2022-11-02 20:54:26,197 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a67dd2c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:54:26, skipping insertion in model container [2022-11-02 20:54:26,198 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:54:26" (1/1) ... [2022-11-02 20:54:26,205 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 20:54:26,285 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 20:54:26,855 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_4bcdd93f-c9b1-4586-a8e2-97e8a1d555a8/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test4-1.i[33021,33034] [2022-11-02 20:54:27,051 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:54:27,077 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-11-02 20:54:27,091 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 20:54:27,108 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_4bcdd93f-c9b1-4586-a8e2-97e8a1d555a8/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test4-1.i[33021,33034] [2022-11-02 20:54:27,178 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:54:27,182 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 20:54:27,205 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_4bcdd93f-c9b1-4586-a8e2-97e8a1d555a8/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test4-1.i[33021,33034] [2022-11-02 20:54:27,251 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:54:27,285 INFO L208 MainTranslator]: Completed translation [2022-11-02 20:54:27,286 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:54:27 WrapperNode [2022-11-02 20:54:27,286 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 20:54:27,287 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 20:54:27,288 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 20:54:27,288 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 20:54:27,295 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:54:27" (1/1) ... [2022-11-02 20:54:27,340 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:54:27" (1/1) ... [2022-11-02 20:54:27,408 INFO L138 Inliner]: procedures = 180, calls = 349, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1166 [2022-11-02 20:54:27,408 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 20:54:27,409 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 20:54:27,409 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 20:54:27,410 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 20:54:27,429 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:54:27" (1/1) ... [2022-11-02 20:54:27,430 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:54:27" (1/1) ... [2022-11-02 20:54:27,445 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:54:27" (1/1) ... [2022-11-02 20:54:27,445 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:54:27" (1/1) ... [2022-11-02 20:54:27,529 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:54:27" (1/1) ... [2022-11-02 20:54:27,543 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:54:27" (1/1) ... [2022-11-02 20:54:27,548 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:54:27" (1/1) ... [2022-11-02 20:54:27,552 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:54:27" (1/1) ... [2022-11-02 20:54:27,561 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 20:54:27,562 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 20:54:27,563 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 20:54:27,563 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 20:54:27,564 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:54:27" (1/1) ... [2022-11-02 20:54:27,571 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:54:27,583 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bcdd93f-c9b1-4586-a8e2-97e8a1d555a8/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:54:27,603 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bcdd93f-c9b1-4586-a8e2-97e8a1d555a8/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 20:54:27,621 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bcdd93f-c9b1-4586-a8e2-97e8a1d555a8/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 20:54:27,655 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2022-11-02 20:54:27,656 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-11-02 20:54:27,656 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-02 20:54:27,656 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-02 20:54:27,656 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-02 20:54:27,657 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-02 20:54:27,657 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-02 20:54:27,657 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-02 20:54:27,657 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-02 20:54:27,658 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-02 20:54:27,658 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-02 20:54:27,658 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-02 20:54:27,658 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-11-02 20:54:27,658 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-02 20:54:27,658 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 20:54:27,659 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 20:54:27,976 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 20:54:27,978 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 20:54:27,995 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-11-02 20:54:34,594 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 20:54:34,620 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 20:54:34,621 INFO L300 CfgBuilder]: Removed 60 assume(true) statements. [2022-11-02 20:54:34,625 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:54:34 BoogieIcfgContainer [2022-11-02 20:54:34,625 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 20:54:34,628 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 20:54:34,628 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 20:54:34,631 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 20:54:34,632 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 08:54:26" (1/3) ... [2022-11-02 20:54:34,633 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e7144cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:54:34, skipping insertion in model container [2022-11-02 20:54:34,633 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:54:27" (2/3) ... [2022-11-02 20:54:34,634 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e7144cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:54:34, skipping insertion in model container [2022-11-02 20:54:34,634 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:54:34" (3/3) ... [2022-11-02 20:54:34,635 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_BER_test4-1.i [2022-11-02 20:54:34,655 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 20:54:34,656 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 648 error locations. [2022-11-02 20:54:34,733 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:54:34,744 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;@674fe5f9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:54:34,744 INFO L358 AbstractCegarLoop]: Starting to check reachability of 648 error locations. [2022-11-02 20:54:34,755 INFO L276 IsEmpty]: Start isEmpty. Operand has 1274 states, 613 states have (on average 2.257748776508972) internal successors, (1384), 1265 states have internal predecessors, (1384), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2022-11-02 20:54:34,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-02 20:54:34,761 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:54:34,762 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-02 20:54:34,763 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 645 more)] === [2022-11-02 20:54:34,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:54:34,770 INFO L85 PathProgramCache]: Analyzing trace with hash 37287509, now seen corresponding path program 1 times [2022-11-02 20:54:34,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:54:34,783 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1764694388] [2022-11-02 20:54:34,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:54:34,784 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:54:34,784 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bcdd93f-c9b1-4586-a8e2-97e8a1d555a8/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:54:34,793 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bcdd93f-c9b1-4586-a8e2-97e8a1d555a8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:54:34,816 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bcdd93f-c9b1-4586-a8e2-97e8a1d555a8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-02 20:54:34,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:54:34,976 INFO L263 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 1 conjunts are in the unsatisfiable core [2022-11-02 20:54:34,981 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:54:35,036 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 20:54:35,037 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:54:35,037 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:54:35,038 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1764694388] [2022-11-02 20:54:35,038 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1764694388] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:54:35,039 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:54:35,039 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 20:54:35,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178170937] [2022-11-02 20:54:35,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:54:35,046 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-02 20:54:35,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:54:35,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-02 20:54:35,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-02 20:54:35,077 INFO L87 Difference]: Start difference. First operand has 1274 states, 613 states have (on average 2.257748776508972) internal successors, (1384), 1265 states have internal predecessors, (1384), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) 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 20:54:35,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:54:35,148 INFO L93 Difference]: Finished difference Result 1256 states and 1330 transitions. [2022-11-02 20:54:35,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-02 20:54:35,155 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 20:54:35,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:54:35,179 INFO L225 Difference]: With dead ends: 1256 [2022-11-02 20:54:35,179 INFO L226 Difference]: Without dead ends: 1254 [2022-11-02 20:54:35,191 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 20:54:35,195 INFO L413 NwaCegarLoop]: 1330 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, 1330 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 20:54:35,195 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1330 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:54:35,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1254 states. [2022-11-02 20:54:35,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1254 to 1254. [2022-11-02 20:54:35,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1254 states, 604 states have (on average 2.1456953642384105) internal successors, (1296), 1245 states have internal predecessors, (1296), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2022-11-02 20:54:35,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1254 states to 1254 states and 1328 transitions. [2022-11-02 20:54:35,302 INFO L78 Accepts]: Start accepts. Automaton has 1254 states and 1328 transitions. Word has length 5 [2022-11-02 20:54:35,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:54:35,302 INFO L495 AbstractCegarLoop]: Abstraction has 1254 states and 1328 transitions. [2022-11-02 20:54:35,302 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 20:54:35,303 INFO L276 IsEmpty]: Start isEmpty. Operand 1254 states and 1328 transitions. [2022-11-02 20:54:35,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-02 20:54:35,303 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:54:35,303 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-02 20:54:35,325 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bcdd93f-c9b1-4586-a8e2-97e8a1d555a8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-11-02 20:54:35,521 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bcdd93f-c9b1-4586-a8e2-97e8a1d555a8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:54:35,521 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 645 more)] === [2022-11-02 20:54:35,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:54:35,522 INFO L85 PathProgramCache]: Analyzing trace with hash 37287571, now seen corresponding path program 1 times [2022-11-02 20:54:35,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:54:35,523 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1991468672] [2022-11-02 20:54:35,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:54:35,523 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:54:35,523 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bcdd93f-c9b1-4586-a8e2-97e8a1d555a8/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:54:35,525 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bcdd93f-c9b1-4586-a8e2-97e8a1d555a8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:54:35,557 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bcdd93f-c9b1-4586-a8e2-97e8a1d555a8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-02 20:54:35,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:54:35,688 INFO L263 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-02 20:54:35,690 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:54:35,766 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 20:54:35,794 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 20:54:35,795 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:54:35,795 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:54:35,795 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1991468672] [2022-11-02 20:54:35,796 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1991468672] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:54:35,797 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:54:35,797 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 20:54:35,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682085544] [2022-11-02 20:54:35,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:54:35,798 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:54:35,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:54:35,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:54:35,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:54:35,800 INFO L87 Difference]: Start difference. First operand 1254 states and 1328 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 20:54:38,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:54:38,733 INFO L93 Difference]: Finished difference Result 1291 states and 1378 transitions. [2022-11-02 20:54:38,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:54:38,733 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 20:54:38,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:54:38,741 INFO L225 Difference]: With dead ends: 1291 [2022-11-02 20:54:38,742 INFO L226 Difference]: Without dead ends: 1291 [2022-11-02 20:54:38,742 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 20:54:38,743 INFO L413 NwaCegarLoop]: 600 mSDtfsCounter, 1159 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 722 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1175 SdHoareTripleChecker+Valid, 704 SdHoareTripleChecker+Invalid, 827 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 722 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-11-02 20:54:38,744 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1175 Valid, 704 Invalid, 827 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 722 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-11-02 20:54:38,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1291 states. [2022-11-02 20:54:38,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1291 to 1237. [2022-11-02 20:54:38,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1237 states, 680 states have (on average 1.9676470588235293) internal successors, (1338), 1228 states have internal predecessors, (1338), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2022-11-02 20:54:38,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1237 states to 1237 states and 1370 transitions. [2022-11-02 20:54:38,795 INFO L78 Accepts]: Start accepts. Automaton has 1237 states and 1370 transitions. Word has length 5 [2022-11-02 20:54:38,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:54:38,795 INFO L495 AbstractCegarLoop]: Abstraction has 1237 states and 1370 transitions. [2022-11-02 20:54:38,796 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 20:54:38,796 INFO L276 IsEmpty]: Start isEmpty. Operand 1237 states and 1370 transitions. [2022-11-02 20:54:38,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-02 20:54:38,796 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:54:38,797 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-02 20:54:38,811 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bcdd93f-c9b1-4586-a8e2-97e8a1d555a8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-02 20:54:38,997 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bcdd93f-c9b1-4586-a8e2-97e8a1d555a8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:54:38,998 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 645 more)] === [2022-11-02 20:54:38,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:54:38,998 INFO L85 PathProgramCache]: Analyzing trace with hash 37287572, now seen corresponding path program 1 times [2022-11-02 20:54:38,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:54:38,999 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2144344645] [2022-11-02 20:54:38,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:54:38,999 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:54:38,999 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bcdd93f-c9b1-4586-a8e2-97e8a1d555a8/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:54:39,000 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bcdd93f-c9b1-4586-a8e2-97e8a1d555a8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:54:39,007 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bcdd93f-c9b1-4586-a8e2-97e8a1d555a8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-11-02 20:54:39,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:54:39,123 INFO L263 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-02 20:54:39,125 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:54:39,136 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 20:54:39,167 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 20:54:39,167 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:54:39,167 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:54:39,168 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2144344645] [2022-11-02 20:54:39,168 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2144344645] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:54:39,169 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:54:39,169 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 20:54:39,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094665511] [2022-11-02 20:54:39,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:54:39,170 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:54:39,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:54:39,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:54:39,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:54:39,173 INFO L87 Difference]: Start difference. First operand 1237 states and 1370 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 20:54:42,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:54:42,853 INFO L93 Difference]: Finished difference Result 1540 states and 1693 transitions. [2022-11-02 20:54:42,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:54:42,854 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 20:54:42,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:54:42,860 INFO L225 Difference]: With dead ends: 1540 [2022-11-02 20:54:42,860 INFO L226 Difference]: Without dead ends: 1540 [2022-11-02 20:54:42,861 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 20:54:42,862 INFO L413 NwaCegarLoop]: 996 mSDtfsCounter, 504 mSDsluCounter, 487 mSDsCounter, 0 mSdLazyCounter, 793 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 504 SdHoareTripleChecker+Valid, 1483 SdHoareTripleChecker+Invalid, 816 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 793 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2022-11-02 20:54:42,863 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [504 Valid, 1483 Invalid, 816 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 793 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2022-11-02 20:54:42,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1540 states. [2022-11-02 20:54:42,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1540 to 1393. [2022-11-02 20:54:42,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1393 states, 846 states have (on average 1.9432624113475176) internal successors, (1644), 1384 states have internal predecessors, (1644), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2022-11-02 20:54:42,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1393 states to 1393 states and 1676 transitions. [2022-11-02 20:54:42,900 INFO L78 Accepts]: Start accepts. Automaton has 1393 states and 1676 transitions. Word has length 5 [2022-11-02 20:54:42,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:54:42,900 INFO L495 AbstractCegarLoop]: Abstraction has 1393 states and 1676 transitions. [2022-11-02 20:54:42,901 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 20:54:42,901 INFO L276 IsEmpty]: Start isEmpty. Operand 1393 states and 1676 transitions. [2022-11-02 20:54:42,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-02 20:54:42,901 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:54:42,901 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-02 20:54:42,917 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bcdd93f-c9b1-4586-a8e2-97e8a1d555a8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-11-02 20:54:43,117 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bcdd93f-c9b1-4586-a8e2-97e8a1d555a8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:54:43,117 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr640REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 645 more)] === [2022-11-02 20:54:43,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:54:43,118 INFO L85 PathProgramCache]: Analyzing trace with hash 1157601995, now seen corresponding path program 1 times [2022-11-02 20:54:43,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:54:43,118 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [41680555] [2022-11-02 20:54:43,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:54:43,119 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:54:43,119 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bcdd93f-c9b1-4586-a8e2-97e8a1d555a8/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:54:43,120 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bcdd93f-c9b1-4586-a8e2-97e8a1d555a8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:54:43,123 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bcdd93f-c9b1-4586-a8e2-97e8a1d555a8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-11-02 20:54:43,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:54:43,231 INFO L263 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-02 20:54:43,233 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:54:43,244 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 20:54:43,244 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:54:43,245 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:54:43,247 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [41680555] [2022-11-02 20:54:43,251 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [41680555] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:54:43,252 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:54:43,252 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:54:43,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614036276] [2022-11-02 20:54:43,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:54:43,254 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:54:43,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:54:43,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:54:43,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:54:43,255 INFO L87 Difference]: Start difference. First operand 1393 states and 1676 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 20:54:43,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:54:43,388 INFO L93 Difference]: Finished difference Result 2737 states and 3283 transitions. [2022-11-02 20:54:43,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:54:43,393 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 20:54:43,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:54:43,405 INFO L225 Difference]: With dead ends: 2737 [2022-11-02 20:54:43,405 INFO L226 Difference]: Without dead ends: 2737 [2022-11-02 20:54:43,408 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 20:54:43,413 INFO L413 NwaCegarLoop]: 1675 mSDtfsCounter, 1143 mSDsluCounter, 1219 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1149 SdHoareTripleChecker+Valid, 2894 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:54:43,413 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1149 Valid, 2894 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:54:43,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2737 states. [2022-11-02 20:54:43,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2737 to 1394. [2022-11-02 20:54:43,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1394 states, 847 states have (on average 1.9421487603305785) internal successors, (1645), 1385 states have internal predecessors, (1645), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2022-11-02 20:54:43,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1394 states to 1394 states and 1677 transitions. [2022-11-02 20:54:43,461 INFO L78 Accepts]: Start accepts. Automaton has 1394 states and 1677 transitions. Word has length 6 [2022-11-02 20:54:43,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:54:43,464 INFO L495 AbstractCegarLoop]: Abstraction has 1394 states and 1677 transitions. [2022-11-02 20:54:43,464 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 20:54:43,465 INFO L276 IsEmpty]: Start isEmpty. Operand 1394 states and 1677 transitions. [2022-11-02 20:54:43,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-02 20:54:43,465 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:54:43,466 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:54:43,482 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bcdd93f-c9b1-4586-a8e2-97e8a1d555a8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-11-02 20:54:43,681 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bcdd93f-c9b1-4586-a8e2-97e8a1d555a8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:54:43,681 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 645 more)] === [2022-11-02 20:54:43,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:54:43,682 INFO L85 PathProgramCache]: Analyzing trace with hash 334651453, now seen corresponding path program 1 times [2022-11-02 20:54:43,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:54:43,683 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [971843958] [2022-11-02 20:54:43,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:54:43,683 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:54:43,683 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bcdd93f-c9b1-4586-a8e2-97e8a1d555a8/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:54:43,685 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bcdd93f-c9b1-4586-a8e2-97e8a1d555a8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:54:43,691 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bcdd93f-c9b1-4586-a8e2-97e8a1d555a8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-11-02 20:54:43,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:54:43,861 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-02 20:54:43,863 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:54:43,883 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 20:54:43,883 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:54:43,883 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:54:43,884 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [971843958] [2022-11-02 20:54:43,884 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [971843958] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:54:43,884 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:54:43,884 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:54:43,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332680729] [2022-11-02 20:54:43,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:54:43,885 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:54:43,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:54:43,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:54:43,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:54:43,886 INFO L87 Difference]: Start difference. First operand 1394 states and 1677 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 20:54:43,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:54:43,936 INFO L93 Difference]: Finished difference Result 1358 states and 1640 transitions. [2022-11-02 20:54:43,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:54:43,936 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 20:54:43,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:54:43,942 INFO L225 Difference]: With dead ends: 1358 [2022-11-02 20:54:43,942 INFO L226 Difference]: Without dead ends: 1358 [2022-11-02 20:54:43,942 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 20:54:43,943 INFO L413 NwaCegarLoop]: 1177 mSDtfsCounter, 1137 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1153 SdHoareTripleChecker+Valid, 1210 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 20:54:43,944 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1153 Valid, 1210 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:54:43,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1358 states. [2022-11-02 20:54:43,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1358 to 1352. [2022-11-02 20:54:43,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1352 states, 829 states have (on average 1.9324487334137515) internal successors, (1602), 1343 states have internal predecessors, (1602), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2022-11-02 20:54:43,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1352 states to 1352 states and 1634 transitions. [2022-11-02 20:54:43,976 INFO L78 Accepts]: Start accepts. Automaton has 1352 states and 1634 transitions. Word has length 11 [2022-11-02 20:54:43,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:54:43,977 INFO L495 AbstractCegarLoop]: Abstraction has 1352 states and 1634 transitions. [2022-11-02 20:54:43,977 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 20:54:43,977 INFO L276 IsEmpty]: Start isEmpty. Operand 1352 states and 1634 transitions. [2022-11-02 20:54:43,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-02 20:54:43,978 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:54:43,978 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:54:43,998 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bcdd93f-c9b1-4586-a8e2-97e8a1d555a8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-11-02 20:54:44,192 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bcdd93f-c9b1-4586-a8e2-97e8a1d555a8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:54:44,193 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr28REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 645 more)] === [2022-11-02 20:54:44,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:54:44,193 INFO L85 PathProgramCache]: Analyzing trace with hash -522505033, now seen corresponding path program 1 times [2022-11-02 20:54:44,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:54:44,194 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1976107279] [2022-11-02 20:54:44,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:54:44,194 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:54:44,194 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bcdd93f-c9b1-4586-a8e2-97e8a1d555a8/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:54:44,196 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bcdd93f-c9b1-4586-a8e2-97e8a1d555a8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:54:44,239 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bcdd93f-c9b1-4586-a8e2-97e8a1d555a8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-11-02 20:54:44,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:54:44,400 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-02 20:54:44,402 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:54:44,426 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 20:54:44,427 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:54:44,427 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:54:44,427 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1976107279] [2022-11-02 20:54:44,427 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1976107279] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:54:44,428 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:54:44,428 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:54:44,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943379881] [2022-11-02 20:54:44,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:54:44,429 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:54:44,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:54:44,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:54:44,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:54:44,430 INFO L87 Difference]: Start difference. First operand 1352 states and 1634 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 20:54:44,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:54:44,540 INFO L93 Difference]: Finished difference Result 1337 states and 1612 transitions. [2022-11-02 20:54:44,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 20:54:44,540 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 20:54:44,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:54:44,545 INFO L225 Difference]: With dead ends: 1337 [2022-11-02 20:54:44,546 INFO L226 Difference]: Without dead ends: 1337 [2022-11-02 20:54:44,546 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 20:54:44,547 INFO L413 NwaCegarLoop]: 1132 mSDtfsCounter, 1108 mSDsluCounter, 1158 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1124 SdHoareTripleChecker+Valid, 2290 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 20:54:44,547 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1124 Valid, 2290 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:54:44,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1337 states. [2022-11-02 20:54:44,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1337 to 1330. [2022-11-02 20:54:44,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1330 states, 821 states have (on average 1.9159561510353227) internal successors, (1573), 1321 states have internal predecessors, (1573), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2022-11-02 20:54:44,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1330 states to 1330 states and 1605 transitions. [2022-11-02 20:54:44,575 INFO L78 Accepts]: Start accepts. Automaton has 1330 states and 1605 transitions. Word has length 13 [2022-11-02 20:54:44,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:54:44,576 INFO L495 AbstractCegarLoop]: Abstraction has 1330 states and 1605 transitions. [2022-11-02 20:54:44,576 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 20:54:44,577 INFO L276 IsEmpty]: Start isEmpty. Operand 1330 states and 1605 transitions. [2022-11-02 20:54:44,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-11-02 20:54:44,577 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:54:44,577 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 20:54:44,596 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bcdd93f-c9b1-4586-a8e2-97e8a1d555a8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-11-02 20:54:44,791 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bcdd93f-c9b1-4586-a8e2-97e8a1d555a8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:54:44,792 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr42REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 645 more)] === [2022-11-02 20:54:44,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:54:44,793 INFO L85 PathProgramCache]: Analyzing trace with hash -22216187, now seen corresponding path program 1 times [2022-11-02 20:54:44,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:54:44,793 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [634424212] [2022-11-02 20:54:44,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:54:44,794 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:54:44,794 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bcdd93f-c9b1-4586-a8e2-97e8a1d555a8/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:54:44,795 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bcdd93f-c9b1-4586-a8e2-97e8a1d555a8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:54:44,833 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bcdd93f-c9b1-4586-a8e2-97e8a1d555a8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-11-02 20:54:45,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:54:45,008 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-02 20:54:45,011 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:54:45,019 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 20:54:45,124 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 20:54:45,124 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:54:45,125 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:54:45,131 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [634424212] [2022-11-02 20:54:45,131 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [634424212] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:54:45,131 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:54:45,131 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:54:45,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020460107] [2022-11-02 20:54:45,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:54:45,133 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:54:45,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:54:45,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:54:45,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:54:45,137 INFO L87 Difference]: Start difference. First operand 1330 states and 1605 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 20:54:49,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:54:49,587 INFO L93 Difference]: Finished difference Result 1791 states and 2054 transitions. [2022-11-02 20:54:49,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:54:49,587 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 20:54:49,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:54:49,595 INFO L225 Difference]: With dead ends: 1791 [2022-11-02 20:54:49,596 INFO L226 Difference]: Without dead ends: 1791 [2022-11-02 20:54:49,596 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 20:54:49,597 INFO L413 NwaCegarLoop]: 566 mSDtfsCounter, 2394 mSDsluCounter, 441 mSDsCounter, 0 mSdLazyCounter, 1083 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2407 SdHoareTripleChecker+Valid, 1007 SdHoareTripleChecker+Invalid, 1144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 1083 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2022-11-02 20:54:49,597 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2407 Valid, 1007 Invalid, 1144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 1083 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2022-11-02 20:54:49,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1791 states. [2022-11-02 20:54:49,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1791 to 1326. [2022-11-02 20:54:49,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1326 states, 821 states have (on average 1.9110840438489647) internal successors, (1569), 1317 states have internal predecessors, (1569), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2022-11-02 20:54:49,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1326 states to 1326 states and 1601 transitions. [2022-11-02 20:54:49,632 INFO L78 Accepts]: Start accepts. Automaton has 1326 states and 1601 transitions. Word has length 27 [2022-11-02 20:54:49,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:54:49,633 INFO L495 AbstractCegarLoop]: Abstraction has 1326 states and 1601 transitions. [2022-11-02 20:54:49,633 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 20:54:49,633 INFO L276 IsEmpty]: Start isEmpty. Operand 1326 states and 1601 transitions. [2022-11-02 20:54:49,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-11-02 20:54:49,634 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:54:49,634 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 20:54:49,649 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bcdd93f-c9b1-4586-a8e2-97e8a1d555a8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-11-02 20:54:49,848 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bcdd93f-c9b1-4586-a8e2-97e8a1d555a8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:54:49,849 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr43REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 645 more)] === [2022-11-02 20:54:49,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:54:49,849 INFO L85 PathProgramCache]: Analyzing trace with hash -22216186, now seen corresponding path program 1 times [2022-11-02 20:54:49,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:54:49,850 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1655215520] [2022-11-02 20:54:49,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:54:49,850 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:54:49,850 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bcdd93f-c9b1-4586-a8e2-97e8a1d555a8/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:54:49,852 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bcdd93f-c9b1-4586-a8e2-97e8a1d555a8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:54:49,895 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bcdd93f-c9b1-4586-a8e2-97e8a1d555a8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-11-02 20:54:50,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:54:50,064 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 20:54:50,067 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:54:50,082 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 20:54:50,279 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 20:54:50,279 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:54:50,279 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:54:50,279 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1655215520] [2022-11-02 20:54:50,279 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1655215520] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:54:50,280 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:54:50,280 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:54:50,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468457931] [2022-11-02 20:54:50,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:54:50,280 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:54:50,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:54:50,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:54:50,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:54:50,281 INFO L87 Difference]: Start difference. First operand 1326 states and 1601 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 20:54:55,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:54:55,346 INFO L93 Difference]: Finished difference Result 1510 states and 1675 transitions. [2022-11-02 20:54:55,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:54:55,347 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 20:54:55,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:54:55,351 INFO L225 Difference]: With dead ends: 1510 [2022-11-02 20:54:55,351 INFO L226 Difference]: Without dead ends: 1510 [2022-11-02 20:54:55,352 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 20:54:55,353 INFO L413 NwaCegarLoop]: 956 mSDtfsCounter, 851 mSDsluCounter, 967 mSDsCounter, 0 mSdLazyCounter, 1343 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 861 SdHoareTripleChecker+Valid, 1923 SdHoareTripleChecker+Invalid, 1347 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1343 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:54:55,353 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [861 Valid, 1923 Invalid, 1347 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1343 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2022-11-02 20:54:55,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1510 states. [2022-11-02 20:54:55,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1510 to 1322. [2022-11-02 20:54:55,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1322 states, 821 states have (on average 1.9062119366626067) internal successors, (1565), 1313 states have internal predecessors, (1565), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2022-11-02 20:54:55,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1322 states to 1322 states and 1597 transitions. [2022-11-02 20:54:55,383 INFO L78 Accepts]: Start accepts. Automaton has 1322 states and 1597 transitions. Word has length 27 [2022-11-02 20:54:55,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:54:55,383 INFO L495 AbstractCegarLoop]: Abstraction has 1322 states and 1597 transitions. [2022-11-02 20:54:55,383 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 20:54:55,384 INFO L276 IsEmpty]: Start isEmpty. Operand 1322 states and 1597 transitions. [2022-11-02 20:54:55,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-11-02 20:54:55,385 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:54:55,385 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 20:54:55,400 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bcdd93f-c9b1-4586-a8e2-97e8a1d555a8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-11-02 20:54:55,599 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bcdd93f-c9b1-4586-a8e2-97e8a1d555a8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:54:55,600 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr108REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 645 more)] === [2022-11-02 20:54:55,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:54:55,600 INFO L85 PathProgramCache]: Analyzing trace with hash 810363537, now seen corresponding path program 1 times [2022-11-02 20:54:55,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:54:55,601 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [183395991] [2022-11-02 20:54:55,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:54:55,601 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:54:55,601 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bcdd93f-c9b1-4586-a8e2-97e8a1d555a8/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:54:55,602 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bcdd93f-c9b1-4586-a8e2-97e8a1d555a8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:54:55,605 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bcdd93f-c9b1-4586-a8e2-97e8a1d555a8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-11-02 20:54:55,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:54:55,853 INFO L263 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-02 20:54:55,856 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:54:55,923 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 20:54:55,923 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:54:55,923 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:54:55,923 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [183395991] [2022-11-02 20:54:55,924 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [183395991] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:54:55,924 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:54:55,924 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:54:55,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73558255] [2022-11-02 20:54:55,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:54:55,925 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:54:55,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:54:55,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:54:55,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:54:55,925 INFO L87 Difference]: Start difference. First operand 1322 states and 1597 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 20:54:56,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:54:56,007 INFO L93 Difference]: Finished difference Result 1322 states and 1593 transitions. [2022-11-02 20:54:56,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 20:54:56,008 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 20:54:56,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:54:56,013 INFO L225 Difference]: With dead ends: 1322 [2022-11-02 20:54:56,013 INFO L226 Difference]: Without dead ends: 1322 [2022-11-02 20:54:56,013 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 20:54:56,017 INFO L413 NwaCegarLoop]: 1126 mSDtfsCounter, 1084 mSDsluCounter, 1142 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1100 SdHoareTripleChecker+Valid, 2268 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 20:54:56,017 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1100 Valid, 2268 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:54:56,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1322 states. [2022-11-02 20:54:56,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1322 to 1316. [2022-11-02 20:54:56,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1316 states, 815 states have (on average 1.9079754601226995) internal successors, (1555), 1307 states have internal predecessors, (1555), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2022-11-02 20:54:56,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1316 states to 1316 states and 1587 transitions. [2022-11-02 20:54:56,044 INFO L78 Accepts]: Start accepts. Automaton has 1316 states and 1587 transitions. Word has length 42 [2022-11-02 20:54:56,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:54:56,046 INFO L495 AbstractCegarLoop]: Abstraction has 1316 states and 1587 transitions. [2022-11-02 20:54:56,046 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 20:54:56,047 INFO L276 IsEmpty]: Start isEmpty. Operand 1316 states and 1587 transitions. [2022-11-02 20:54:56,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-11-02 20:54:56,051 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:54:56,051 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 20:54:56,067 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bcdd93f-c9b1-4586-a8e2-97e8a1d555a8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-11-02 20:54:56,267 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bcdd93f-c9b1-4586-a8e2-97e8a1d555a8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:54:56,267 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr108REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 645 more)] === [2022-11-02 20:54:56,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:54:56,268 INFO L85 PathProgramCache]: Analyzing trace with hash 2087041861, now seen corresponding path program 1 times [2022-11-02 20:54:56,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:54:56,269 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1004134202] [2022-11-02 20:54:56,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:54:56,269 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:54:56,269 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bcdd93f-c9b1-4586-a8e2-97e8a1d555a8/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:54:56,270 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bcdd93f-c9b1-4586-a8e2-97e8a1d555a8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:54:56,274 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bcdd93f-c9b1-4586-a8e2-97e8a1d555a8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-11-02 20:54:56,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:54:56,542 INFO L263 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-02 20:54:56,545 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:54:56,878 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 20:54:56,878 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:54:56,878 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:54:56,878 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1004134202] [2022-11-02 20:54:56,878 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1004134202] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:54:56,879 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:54:56,879 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:54:56,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630317259] [2022-11-02 20:54:56,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:54:56,879 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:54:56,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:54:56,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:54:56,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:54:56,880 INFO L87 Difference]: Start difference. First operand 1316 states and 1587 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 20:54:56,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:54:56,977 INFO L93 Difference]: Finished difference Result 1362 states and 1633 transitions. [2022-11-02 20:54:56,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:54:56,978 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 20:54:56,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:54:56,983 INFO L225 Difference]: With dead ends: 1362 [2022-11-02 20:54:56,983 INFO L226 Difference]: Without dead ends: 1362 [2022-11-02 20:54:56,983 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 20:54:56,984 INFO L413 NwaCegarLoop]: 1134 mSDtfsCounter, 67 mSDsluCounter, 1039 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 2173 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:54:56,984 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 2173 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:54:56,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1362 states. [2022-11-02 20:54:57,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1362 to 1362. [2022-11-02 20:54:57,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1362 states, 861 states have (on average 1.859465737514518) internal successors, (1601), 1353 states have internal predecessors, (1601), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2022-11-02 20:54:57,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1362 states to 1362 states and 1633 transitions. [2022-11-02 20:54:57,011 INFO L78 Accepts]: Start accepts. Automaton has 1362 states and 1633 transitions. Word has length 50 [2022-11-02 20:54:57,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:54:57,012 INFO L495 AbstractCegarLoop]: Abstraction has 1362 states and 1633 transitions. [2022-11-02 20:54:57,012 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 20:54:57,012 INFO L276 IsEmpty]: Start isEmpty. Operand 1362 states and 1633 transitions. [2022-11-02 20:54:57,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-11-02 20:54:57,013 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:54:57,013 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 20:54:57,028 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bcdd93f-c9b1-4586-a8e2-97e8a1d555a8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-11-02 20:54:57,228 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bcdd93f-c9b1-4586-a8e2-97e8a1d555a8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:54:57,228 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr61REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 645 more)] === [2022-11-02 20:54:57,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:54:57,229 INFO L85 PathProgramCache]: Analyzing trace with hash 1009990608, now seen corresponding path program 1 times [2022-11-02 20:54:57,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:54:57,229 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1661094058] [2022-11-02 20:54:57,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:54:57,230 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:54:57,230 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bcdd93f-c9b1-4586-a8e2-97e8a1d555a8/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:54:57,231 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bcdd93f-c9b1-4586-a8e2-97e8a1d555a8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:54:57,235 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bcdd93f-c9b1-4586-a8e2-97e8a1d555a8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-11-02 20:54:57,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:54:57,590 INFO L263 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-02 20:54:57,598 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:54:57,609 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 20:54:57,616 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 20:54:58,213 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:54:58,215 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 20:54:58,240 INFO L356 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-02 20:54:58,240 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 20:54:58,270 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 20:54:58,271 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:54:58,271 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:54:58,271 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1661094058] [2022-11-02 20:54:58,271 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1661094058] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:54:58,272 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:54:58,272 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:54:58,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351001612] [2022-11-02 20:54:58,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:54:58,273 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:54:58,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:54:58,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:54:58,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:54:58,274 INFO L87 Difference]: Start difference. First operand 1362 states and 1633 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 20:55:01,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:55:01,725 INFO L93 Difference]: Finished difference Result 1331 states and 1556 transitions. [2022-11-02 20:55:01,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 20:55:01,726 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 20:55:01,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:55:01,730 INFO L225 Difference]: With dead ends: 1331 [2022-11-02 20:55:01,731 INFO L226 Difference]: Without dead ends: 1331 [2022-11-02 20:55:01,731 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 20:55:01,732 INFO L413 NwaCegarLoop]: 352 mSDtfsCounter, 2001 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 797 mSolverCounterSat, 113 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2007 SdHoareTripleChecker+Valid, 477 SdHoareTripleChecker+Invalid, 910 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 113 IncrementalHoareTripleChecker+Valid, 797 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2022-11-02 20:55:01,732 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2007 Valid, 477 Invalid, 910 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [113 Valid, 797 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2022-11-02 20:55:01,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1331 states. [2022-11-02 20:55:01,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1331 to 1112. [2022-11-02 20:55:01,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1112 states, 695 states have (on average 1.7266187050359711) internal successors, (1200), 1103 states have internal predecessors, (1200), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2022-11-02 20:55:01,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1112 states to 1112 states and 1232 transitions. [2022-11-02 20:55:01,754 INFO L78 Accepts]: Start accepts. Automaton has 1112 states and 1232 transitions. Word has length 53 [2022-11-02 20:55:01,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:55:01,755 INFO L495 AbstractCegarLoop]: Abstraction has 1112 states and 1232 transitions. [2022-11-02 20:55:01,755 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 20:55:01,755 INFO L276 IsEmpty]: Start isEmpty. Operand 1112 states and 1232 transitions. [2022-11-02 20:55:01,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-11-02 20:55:01,756 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:55:01,756 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 20:55:01,774 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bcdd93f-c9b1-4586-a8e2-97e8a1d555a8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2022-11-02 20:55:01,973 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bcdd93f-c9b1-4586-a8e2-97e8a1d555a8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:55:01,973 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr66REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 645 more)] === [2022-11-02 20:55:01,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:55:01,974 INFO L85 PathProgramCache]: Analyzing trace with hash -1993678057, now seen corresponding path program 1 times [2022-11-02 20:55:01,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:55:01,974 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1548397197] [2022-11-02 20:55:01,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:55:01,974 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:55:01,975 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bcdd93f-c9b1-4586-a8e2-97e8a1d555a8/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:55:01,975 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bcdd93f-c9b1-4586-a8e2-97e8a1d555a8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:55:01,977 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bcdd93f-c9b1-4586-a8e2-97e8a1d555a8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-11-02 20:55:02,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:55:02,303 INFO L263 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-02 20:55:02,306 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:55:02,327 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 20:55:02,348 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 20:55:02,400 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 20:55:02,420 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 20:55:02,420 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:55:02,421 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:55:02,421 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1548397197] [2022-11-02 20:55:02,421 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1548397197] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:55:02,421 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:55:02,421 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:55:02,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888757114] [2022-11-02 20:55:02,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:55:02,424 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:55:02,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:55:02,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:55:02,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:55:02,425 INFO L87 Difference]: Start difference. First operand 1112 states and 1232 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 20:55:06,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:55:06,686 INFO L93 Difference]: Finished difference Result 1111 states and 1231 transitions. [2022-11-02 20:55:06,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:55:06,687 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 20:55:06,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:55:06,690 INFO L225 Difference]: With dead ends: 1111 [2022-11-02 20:55:06,690 INFO L226 Difference]: Without dead ends: 1111 [2022-11-02 20:55:06,691 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 20:55:06,691 INFO L413 NwaCegarLoop]: 1046 mSDtfsCounter, 4 mSDsluCounter, 1603 mSDsCounter, 0 mSdLazyCounter, 1540 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 2649 SdHoareTripleChecker+Invalid, 1541 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1540 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:55:06,692 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 2649 Invalid, 1541 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1540 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2022-11-02 20:55:06,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1111 states. [2022-11-02 20:55:06,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1111 to 1111. [2022-11-02 20:55:06,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1111 states, 695 states have (on average 1.725179856115108) internal successors, (1199), 1102 states have internal predecessors, (1199), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2022-11-02 20:55:06,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1111 states to 1111 states and 1231 transitions. [2022-11-02 20:55:06,715 INFO L78 Accepts]: Start accepts. Automaton has 1111 states and 1231 transitions. Word has length 58 [2022-11-02 20:55:06,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:55:06,716 INFO L495 AbstractCegarLoop]: Abstraction has 1111 states and 1231 transitions. [2022-11-02 20:55:06,716 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 20:55:06,716 INFO L276 IsEmpty]: Start isEmpty. Operand 1111 states and 1231 transitions. [2022-11-02 20:55:06,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-11-02 20:55:06,717 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:55:06,717 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 20:55:06,752 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bcdd93f-c9b1-4586-a8e2-97e8a1d555a8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2022-11-02 20:55:06,934 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bcdd93f-c9b1-4586-a8e2-97e8a1d555a8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:55:06,934 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr67REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 645 more)] === [2022-11-02 20:55:06,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:55:06,935 INFO L85 PathProgramCache]: Analyzing trace with hash -1993678056, now seen corresponding path program 1 times [2022-11-02 20:55:06,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:55:06,935 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1402307844] [2022-11-02 20:55:06,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:55:06,935 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:55:06,936 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bcdd93f-c9b1-4586-a8e2-97e8a1d555a8/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:55:06,936 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bcdd93f-c9b1-4586-a8e2-97e8a1d555a8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:55:06,938 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bcdd93f-c9b1-4586-a8e2-97e8a1d555a8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2022-11-02 20:55:07,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:55:07,302 INFO L263 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-02 20:55:07,305 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:55:07,322 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 20:55:07,352 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 20:55:07,363 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 20:55:07,437 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 20:55:07,446 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 20:55:07,468 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 20:55:07,468 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:55:07,468 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:55:07,468 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1402307844] [2022-11-02 20:55:07,469 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1402307844] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:55:07,469 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:55:07,469 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:55:07,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413889222] [2022-11-02 20:55:07,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:55:07,471 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:55:07,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:55:07,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:55:07,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:55:07,472 INFO L87 Difference]: Start difference. First operand 1111 states and 1231 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 20:55:12,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:55:12,490 INFO L93 Difference]: Finished difference Result 1110 states and 1230 transitions. [2022-11-02 20:55:12,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:55:12,491 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 20:55:12,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:55:12,494 INFO L225 Difference]: With dead ends: 1110 [2022-11-02 20:55:12,494 INFO L226 Difference]: Without dead ends: 1110 [2022-11-02 20:55:12,495 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 20:55:12,495 INFO L413 NwaCegarLoop]: 1046 mSDtfsCounter, 2 mSDsluCounter, 1626 mSDsCounter, 0 mSdLazyCounter, 1515 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 2672 SdHoareTripleChecker+Invalid, 1516 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1515 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2022-11-02 20:55:12,496 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 2672 Invalid, 1516 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1515 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2022-11-02 20:55:12,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1110 states. [2022-11-02 20:55:12,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1110 to 1110. [2022-11-02 20:55:12,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1110 states, 694 states have (on average 1.7262247838616716) internal successors, (1198), 1101 states have internal predecessors, (1198), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2022-11-02 20:55:12,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1110 states to 1110 states and 1230 transitions. [2022-11-02 20:55:12,514 INFO L78 Accepts]: Start accepts. Automaton has 1110 states and 1230 transitions. Word has length 58 [2022-11-02 20:55:12,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:55:12,515 INFO L495 AbstractCegarLoop]: Abstraction has 1110 states and 1230 transitions. [2022-11-02 20:55:12,515 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 20:55:12,515 INFO L276 IsEmpty]: Start isEmpty. Operand 1110 states and 1230 transitions. [2022-11-02 20:55:12,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-11-02 20:55:12,516 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:55:12,516 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 20:55:12,537 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bcdd93f-c9b1-4586-a8e2-97e8a1d555a8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2022-11-02 20:55:12,732 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bcdd93f-c9b1-4586-a8e2-97e8a1d555a8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:55:12,732 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 645 more)] === [2022-11-02 20:55:12,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:55:12,733 INFO L85 PathProgramCache]: Analyzing trace with hash 2041767774, now seen corresponding path program 1 times [2022-11-02 20:55:12,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:55:12,733 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1436015855] [2022-11-02 20:55:12,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:55:12,734 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:55:12,734 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bcdd93f-c9b1-4586-a8e2-97e8a1d555a8/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:55:12,735 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bcdd93f-c9b1-4586-a8e2-97e8a1d555a8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:55:12,775 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bcdd93f-c9b1-4586-a8e2-97e8a1d555a8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2022-11-02 20:55:13,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:55:13,107 INFO L263 TraceCheckSpWp]: Trace formula consists of 285 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-02 20:55:13,110 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:55:13,150 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 20:55:13,150 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:55:13,151 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:55:13,151 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1436015855] [2022-11-02 20:55:13,151 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1436015855] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:55:13,151 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:55:13,152 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:55:13,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352725413] [2022-11-02 20:55:13,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:55:13,153 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:55:13,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:55:13,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:55:13,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:55:13,157 INFO L87 Difference]: Start difference. First operand 1110 states and 1230 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 20:55:13,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:55:13,250 INFO L93 Difference]: Finished difference Result 1113 states and 1235 transitions. [2022-11-02 20:55:13,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 20:55:13,252 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 20:55:13,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:55:13,261 INFO L225 Difference]: With dead ends: 1113 [2022-11-02 20:55:13,263 INFO L226 Difference]: Without dead ends: 1113 [2022-11-02 20:55:13,263 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 20:55:13,264 INFO L413 NwaCegarLoop]: 1045 mSDtfsCounter, 2 mSDsluCounter, 2082 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 3127 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:55:13,264 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 3127 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:55:13,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1113 states. [2022-11-02 20:55:13,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1113 to 1113. [2022-11-02 20:55:13,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1113 states, 696 states have (on average 1.7255747126436782) internal successors, (1201), 1104 states have internal predecessors, (1201), 16 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (18), 7 states have call predecessors, (18), 16 states have call successors, (18) [2022-11-02 20:55:13,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1113 states to 1113 states and 1235 transitions. [2022-11-02 20:55:13,295 INFO L78 Accepts]: Start accepts. Automaton has 1113 states and 1235 transitions. Word has length 66 [2022-11-02 20:55:13,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:55:13,296 INFO L495 AbstractCegarLoop]: Abstraction has 1113 states and 1235 transitions. [2022-11-02 20:55:13,296 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 20:55:13,296 INFO L276 IsEmpty]: Start isEmpty. Operand 1113 states and 1235 transitions. [2022-11-02 20:55:13,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-11-02 20:55:13,297 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:55:13,297 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 20:55:13,325 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bcdd93f-c9b1-4586-a8e2-97e8a1d555a8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2022-11-02 20:55:13,517 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bcdd93f-c9b1-4586-a8e2-97e8a1d555a8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:55:13,517 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 645 more)] === [2022-11-02 20:55:13,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:55:13,518 INFO L85 PathProgramCache]: Analyzing trace with hash -326306715, now seen corresponding path program 1 times [2022-11-02 20:55:13,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:55:13,518 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [474720341] [2022-11-02 20:55:13,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:55:13,518 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:55:13,519 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bcdd93f-c9b1-4586-a8e2-97e8a1d555a8/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:55:13,520 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bcdd93f-c9b1-4586-a8e2-97e8a1d555a8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:55:13,529 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bcdd93f-c9b1-4586-a8e2-97e8a1d555a8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2022-11-02 20:55:13,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:55:13,869 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-02 20:55:13,871 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:55:13,906 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 20:55:13,907 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:55:14,027 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 20:55:14,027 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:55:14,027 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [474720341] [2022-11-02 20:55:14,028 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [474720341] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:55:14,028 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:55:14,028 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2022-11-02 20:55:14,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252317872] [2022-11-02 20:55:14,028 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:55:14,029 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 20:55:14,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:55:14,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 20:55:14,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:55:14,030 INFO L87 Difference]: Start difference. First operand 1113 states and 1235 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 20:55:14,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:55:14,311 INFO L93 Difference]: Finished difference Result 1125 states and 1253 transitions. [2022-11-02 20:55:14,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-02 20:55:14,311 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 20:55:14,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:55:14,315 INFO L225 Difference]: With dead ends: 1125 [2022-11-02 20:55:14,316 INFO L226 Difference]: Without dead ends: 1125 [2022-11-02 20:55:14,316 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 20:55:14,317 INFO L413 NwaCegarLoop]: 1045 mSDtfsCounter, 23 mSDsluCounter, 2084 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 3129 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:55:14,317 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 3129 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 20:55:14,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1125 states. [2022-11-02 20:55:14,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1125 to 1123. [2022-11-02 20:55:14,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1123 states, 705 states have (on average 1.724822695035461) internal successors, (1216), 1113 states have internal predecessors, (1216), 16 states have call successors, (16), 3 states have call predecessors, (16), 4 states have return successors, (18), 7 states have call predecessors, (18), 16 states have call successors, (18) [2022-11-02 20:55:14,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1123 states to 1123 states and 1250 transitions. [2022-11-02 20:55:14,337 INFO L78 Accepts]: Start accepts. Automaton has 1123 states and 1250 transitions. Word has length 67 [2022-11-02 20:55:14,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:55:14,338 INFO L495 AbstractCegarLoop]: Abstraction has 1123 states and 1250 transitions. [2022-11-02 20:55:14,338 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 20:55:14,338 INFO L276 IsEmpty]: Start isEmpty. Operand 1123 states and 1250 transitions. [2022-11-02 20:55:14,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-11-02 20:55:14,339 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:55:14,339 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 20:55:14,361 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bcdd93f-c9b1-4586-a8e2-97e8a1d555a8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (16)] Ended with exit code 0 [2022-11-02 20:55:14,557 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bcdd93f-c9b1-4586-a8e2-97e8a1d555a8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:55:14,557 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 645 more)] === [2022-11-02 20:55:14,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:55:14,557 INFO L85 PathProgramCache]: Analyzing trace with hash 1716613406, now seen corresponding path program 2 times [2022-11-02 20:55:14,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:55:14,558 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1932355248] [2022-11-02 20:55:14,558 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-02 20:55:14,558 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:55:14,558 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bcdd93f-c9b1-4586-a8e2-97e8a1d555a8/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:55:14,560 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bcdd93f-c9b1-4586-a8e2-97e8a1d555a8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:55:14,601 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bcdd93f-c9b1-4586-a8e2-97e8a1d555a8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2022-11-02 20:55:15,064 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-02 20:55:15,064 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:55:15,087 INFO L263 TraceCheckSpWp]: Trace formula consists of 329 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-02 20:55:15,089 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:55:15,179 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 20:55:15,179 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:55:15,473 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 20:55:15,473 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:55:15,473 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1932355248] [2022-11-02 20:55:15,473 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1932355248] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:55:15,473 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:55:15,473 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2022-11-02 20:55:15,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996004126] [2022-11-02 20:55:15,474 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:55:15,474 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-02 20:55:15,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:55:15,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-02 20:55:15,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2022-11-02 20:55:15,475 INFO L87 Difference]: Start difference. First operand 1123 states and 1250 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 20:55:16,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:55:16,515 INFO L93 Difference]: Finished difference Result 1144 states and 1282 transitions. [2022-11-02 20:55:16,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-02 20:55:16,516 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 20:55:16,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:55:16,521 INFO L225 Difference]: With dead ends: 1144 [2022-11-02 20:55:16,521 INFO L226 Difference]: Without dead ends: 1140 [2022-11-02 20:55:16,522 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 20:55:16,523 INFO L413 NwaCegarLoop]: 1048 mSDtfsCounter, 73 mSDsluCounter, 6256 mSDsCounter, 0 mSdLazyCounter, 247 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 7304 SdHoareTripleChecker+Invalid, 307 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 247 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-02 20:55:16,523 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 7304 Invalid, 307 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 247 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-02 20:55:16,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1140 states. [2022-11-02 20:55:16,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1140 to 1132. [2022-11-02 20:55:16,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1132 states, 714 states have (on average 1.719887955182073) internal successors, (1228), 1122 states have internal predecessors, (1228), 16 states have call successors, (16), 3 states have call predecessors, (16), 4 states have return successors, (18), 7 states have call predecessors, (18), 16 states have call successors, (18) [2022-11-02 20:55:16,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1132 states to 1132 states and 1262 transitions. [2022-11-02 20:55:16,557 INFO L78 Accepts]: Start accepts. Automaton has 1132 states and 1262 transitions. Word has length 70 [2022-11-02 20:55:16,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:55:16,557 INFO L495 AbstractCegarLoop]: Abstraction has 1132 states and 1262 transitions. [2022-11-02 20:55:16,558 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 20:55:16,558 INFO L276 IsEmpty]: Start isEmpty. Operand 1132 states and 1262 transitions. [2022-11-02 20:55:16,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-11-02 20:55:16,565 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:55:16,565 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 20:55:16,584 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bcdd93f-c9b1-4586-a8e2-97e8a1d555a8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2022-11-02 20:55:16,781 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bcdd93f-c9b1-4586-a8e2-97e8a1d555a8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:55:16,781 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 645 more)] === [2022-11-02 20:55:16,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:55:16,782 INFO L85 PathProgramCache]: Analyzing trace with hash 1956109246, now seen corresponding path program 3 times [2022-11-02 20:55:16,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:55:16,783 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1743778040] [2022-11-02 20:55:16,783 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-02 20:55:16,783 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:55:16,783 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bcdd93f-c9b1-4586-a8e2-97e8a1d555a8/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:55:16,785 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bcdd93f-c9b1-4586-a8e2-97e8a1d555a8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:55:16,829 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bcdd93f-c9b1-4586-a8e2-97e8a1d555a8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2022-11-02 20:55:17,560 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-11-02 20:55:17,561 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:55:17,582 INFO L263 TraceCheckSpWp]: Trace formula consists of 395 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-02 20:55:17,584 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:55:17,826 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 20:55:17,826 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:55:18,904 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 20:55:18,904 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:55:18,904 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1743778040] [2022-11-02 20:55:18,904 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1743778040] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:55:18,904 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:55:18,904 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 26 [2022-11-02 20:55:18,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328862049] [2022-11-02 20:55:18,905 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:55:18,905 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-11-02 20:55:18,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:55:18,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-11-02 20:55:18,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=457, Unknown=0, NotChecked=0, Total=650 [2022-11-02 20:55:18,906 INFO L87 Difference]: Start difference. First operand 1132 states and 1262 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 20:55:24,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:55:24,689 INFO L93 Difference]: Finished difference Result 1174 states and 1338 transitions. [2022-11-02 20:55:24,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-11-02 20:55:24,690 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 20:55:24,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:55:24,695 INFO L225 Difference]: With dead ends: 1174 [2022-11-02 20:55:24,695 INFO L226 Difference]: Without dead ends: 1168 [2022-11-02 20:55:24,696 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 229 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=793, Invalid=1559, Unknown=0, NotChecked=0, Total=2352 [2022-11-02 20:55:24,697 INFO L413 NwaCegarLoop]: 1052 mSDtfsCounter, 147 mSDsluCounter, 11516 mSDsCounter, 0 mSdLazyCounter, 927 mSolverCounterSat, 127 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 12568 SdHoareTripleChecker+Invalid, 1054 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 127 IncrementalHoareTripleChecker+Valid, 927 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:55:24,698 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [147 Valid, 12568 Invalid, 1054 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [127 Valid, 927 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-11-02 20:55:24,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1168 states. [2022-11-02 20:55:24,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1168 to 1150. [2022-11-02 20:55:24,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1150 states, 732 states have (on average 1.709016393442623) internal successors, (1251), 1140 states have internal predecessors, (1251), 16 states have call successors, (16), 3 states have call predecessors, (16), 4 states have return successors, (18), 7 states have call predecessors, (18), 16 states have call successors, (18) [2022-11-02 20:55:24,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1150 states to 1150 states and 1285 transitions. [2022-11-02 20:55:24,749 INFO L78 Accepts]: Start accepts. Automaton has 1150 states and 1285 transitions. Word has length 76 [2022-11-02 20:55:24,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:55:24,749 INFO L495 AbstractCegarLoop]: Abstraction has 1150 states and 1285 transitions. [2022-11-02 20:55:24,750 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 20:55:24,750 INFO L276 IsEmpty]: Start isEmpty. Operand 1150 states and 1285 transitions. [2022-11-02 20:55:24,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-11-02 20:55:24,751 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:55:24,751 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 20:55:24,773 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bcdd93f-c9b1-4586-a8e2-97e8a1d555a8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2022-11-02 20:55:24,965 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bcdd93f-c9b1-4586-a8e2-97e8a1d555a8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:55:24,965 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 645 more)] === [2022-11-02 20:55:24,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:55:24,966 INFO L85 PathProgramCache]: Analyzing trace with hash -1029224194, now seen corresponding path program 4 times [2022-11-02 20:55:24,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:55:24,967 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [698847353] [2022-11-02 20:55:24,967 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-02 20:55:24,968 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:55:24,968 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bcdd93f-c9b1-4586-a8e2-97e8a1d555a8/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:55:24,969 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bcdd93f-c9b1-4586-a8e2-97e8a1d555a8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:55:24,989 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bcdd93f-c9b1-4586-a8e2-97e8a1d555a8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2022-11-02 20:55:25,510 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-02 20:55:25,511 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:55:25,536 INFO L263 TraceCheckSpWp]: Trace formula consists of 527 conjuncts, 25 conjunts are in the unsatisfiable core [2022-11-02 20:55:25,538 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:55:26,227 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 20:55:26,228 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:55:29,041 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 20:55:29,041 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:55:29,041 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [698847353] [2022-11-02 20:55:29,041 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [698847353] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:55:29,042 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:55:29,042 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 50 [2022-11-02 20:55:29,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604025381] [2022-11-02 20:55:29,042 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:55:29,043 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2022-11-02 20:55:29,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:55:29,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2022-11-02 20:55:29,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=672, Invalid=1778, Unknown=0, NotChecked=0, Total=2450 [2022-11-02 20:55:29,045 INFO L87 Difference]: Start difference. First operand 1150 states and 1285 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 20:55:49,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:55:49,412 INFO L93 Difference]: Finished difference Result 1230 states and 1418 transitions. [2022-11-02 20:55:49,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2022-11-02 20:55:49,413 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 20:55:49,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:55:49,419 INFO L225 Difference]: With dead ends: 1230 [2022-11-02 20:55:49,419 INFO L226 Difference]: Without dead ends: 1226 [2022-11-02 20:55:49,423 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 239 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1383 ImplicationChecksByTransitivity, 16.6s TimeCoverageRelationStatistics Valid=3791, Invalid=9319, Unknown=0, NotChecked=0, Total=13110 [2022-11-02 20:55:49,424 INFO L413 NwaCegarLoop]: 1065 mSDtfsCounter, 442 mSDsluCounter, 26459 mSDsCounter, 0 mSdLazyCounter, 3101 mSolverCounterSat, 474 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 442 SdHoareTripleChecker+Valid, 27524 SdHoareTripleChecker+Invalid, 3575 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 474 IncrementalHoareTripleChecker+Valid, 3101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2022-11-02 20:55:49,425 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [442 Valid, 27524 Invalid, 3575 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [474 Valid, 3101 Invalid, 0 Unknown, 0 Unchecked, 6.3s Time] [2022-11-02 20:55:49,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1226 states. [2022-11-02 20:55:49,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1226 to 1184. [2022-11-02 20:55:49,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1184 states, 766 states have (on average 1.6932114882506528) internal successors, (1297), 1174 states have internal predecessors, (1297), 16 states have call successors, (16), 3 states have call predecessors, (16), 4 states have return successors, (18), 7 states have call predecessors, (18), 16 states have call successors, (18) [2022-11-02 20:55:49,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1184 states to 1184 states and 1331 transitions. [2022-11-02 20:55:49,455 INFO L78 Accepts]: Start accepts. Automaton has 1184 states and 1331 transitions. Word has length 88 [2022-11-02 20:55:49,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:55:49,455 INFO L495 AbstractCegarLoop]: Abstraction has 1184 states and 1331 transitions. [2022-11-02 20:55:49,456 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 20:55:49,456 INFO L276 IsEmpty]: Start isEmpty. Operand 1184 states and 1331 transitions. [2022-11-02 20:55:49,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-11-02 20:55:49,457 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:55:49,458 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 20:55:49,478 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bcdd93f-c9b1-4586-a8e2-97e8a1d555a8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2022-11-02 20:55:49,677 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bcdd93f-c9b1-4586-a8e2-97e8a1d555a8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:55:49,677 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 645 more)] === [2022-11-02 20:55:49,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:55:49,677 INFO L85 PathProgramCache]: Analyzing trace with hash 1185723038, now seen corresponding path program 5 times [2022-11-02 20:55:49,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:55:49,678 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [970347494] [2022-11-02 20:55:49,678 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-02 20:55:49,678 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:55:49,678 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bcdd93f-c9b1-4586-a8e2-97e8a1d555a8/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:55:49,679 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bcdd93f-c9b1-4586-a8e2-97e8a1d555a8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:55:49,685 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bcdd93f-c9b1-4586-a8e2-97e8a1d555a8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2022-11-02 20:55:51,412 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 23 check-sat command(s) [2022-11-02 20:55:51,412 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:55:51,457 INFO L263 TraceCheckSpWp]: Trace formula consists of 769 conjuncts, 59 conjunts are in the unsatisfiable core [2022-11-02 20:55:51,466 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:55:51,500 INFO L356 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-02 20:55:51,501 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 22 [2022-11-02 20:55:52,064 INFO L356 Elim1Store]: treesize reduction 54, result has 29.9 percent of original size [2022-11-02 20:55:52,064 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 28 treesize of output 45 [2022-11-02 20:55:52,145 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 20:55:52,411 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 42 treesize of output 24 [2022-11-02 20:55:55,224 INFO L356 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-02 20:55:55,225 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 54 treesize of output 53 [2022-11-02 20:55:55,328 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 51 treesize of output 27 [2022-11-02 20:55:55,438 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 20:55:55,439 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:55:55,933 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:55:55,933 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [970347494] [2022-11-02 20:55:55,934 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [970347494] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:55:55,934 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1645089014] [2022-11-02 20:55:55,934 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-02 20:55:55,934 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-02 20:55:55,934 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bcdd93f-c9b1-4586-a8e2-97e8a1d555a8/bin/uautomizer-Dbtcem3rbc/cvc4 [2022-11-02 20:55:55,941 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bcdd93f-c9b1-4586-a8e2-97e8a1d555a8/bin/uautomizer-Dbtcem3rbc/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-02 20:55:55,943 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bcdd93f-c9b1-4586-a8e2-97e8a1d555a8/bin/uautomizer-Dbtcem3rbc/cvc4 --incremental --print-success --lang smt (21)] Waiting until timeout for monitored process [2022-11-02 20:57:06,129 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 23 check-sat command(s) [2022-11-02 20:57:06,129 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:57:06,383 INFO L263 TraceCheckSpWp]: Trace formula consists of 769 conjuncts, 61 conjunts are in the unsatisfiable core [2022-11-02 20:57:06,393 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:57:06,444 INFO L356 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-02 20:57:06,444 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2022-11-02 20:57:06,764 INFO L356 Elim1Store]: treesize reduction 54, result has 29.9 percent of original size [2022-11-02 20:57:06,765 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 26 treesize of output 43 [2022-11-02 20:57:06,841 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 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 20:57:07,101 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 34 treesize of output 16 [2022-11-02 20:57:10,879 INFO L356 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-02 20:57:10,879 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 20:57:10,988 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 43 treesize of output 19 [2022-11-02 20:57:11,075 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 20:57:11,075 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:57:11,384 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2097 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_2097) |c_ULTIMATE.start_main_~user~0#1.base|) (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (_ bv1 1)))) is different from false [2022-11-02 20:57:11,386 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1645089014] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:57:11,386 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:57:11,387 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 16 [2022-11-02 20:57:11,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512842210] [2022-11-02 20:57:11,387 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:57:11,387 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-02 20:57:11,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:57:11,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-02 20:57:11,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=334, Unknown=26, NotChecked=38, Total=462 [2022-11-02 20:57:11,388 INFO L87 Difference]: Start difference. First operand 1184 states and 1331 transitions. Second operand has 18 states, 15 states have (on average 8.8) internal successors, (132), 17 states have internal predecessors, (132), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-02 20:57:23,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:57:23,783 INFO L93 Difference]: Finished difference Result 2117 states and 2327 transitions. [2022-11-02 20:57:23,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-02 20:57:23,783 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 15 states have (on average 8.8) internal successors, (132), 17 states have internal predecessors, (132), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 110 [2022-11-02 20:57:23,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:57:23,789 INFO L225 Difference]: With dead ends: 2117 [2022-11-02 20:57:23,789 INFO L226 Difference]: Without dead ends: 2113 [2022-11-02 20:57:23,790 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 120 SyntacticMatches, 88 SemanticMatches, 32 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 547 ImplicationChecksByTransitivity, 5.9s TimeCoverageRelationStatistics Valid=181, Invalid=829, Unknown=50, NotChecked=62, Total=1122 [2022-11-02 20:57:23,790 INFO L413 NwaCegarLoop]: 612 mSDtfsCounter, 1015 mSDsluCounter, 6544 mSDsCounter, 0 mSdLazyCounter, 5609 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1030 SdHoareTripleChecker+Valid, 7156 SdHoareTripleChecker+Invalid, 11029 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 5609 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 5383 IncrementalHoareTripleChecker+Unchecked, 11.5s IncrementalHoareTripleChecker+Time [2022-11-02 20:57:23,791 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1030 Valid, 7156 Invalid, 11029 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 5609 Invalid, 0 Unknown, 5383 Unchecked, 11.5s Time] [2022-11-02 20:57:23,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2113 states. [2022-11-02 20:57:23,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2113 to 1546. [2022-11-02 20:57:23,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1546 states, 1126 states have (on average 1.6580817051509769) internal successors, (1867), 1531 states have internal predecessors, (1867), 20 states have call successors, (20), 4 states have call predecessors, (20), 5 states have return successors, (22), 11 states have call predecessors, (22), 20 states have call successors, (22) [2022-11-02 20:57:23,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1546 states to 1546 states and 1909 transitions. [2022-11-02 20:57:23,824 INFO L78 Accepts]: Start accepts. Automaton has 1546 states and 1909 transitions. Word has length 110 [2022-11-02 20:57:23,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:57:23,825 INFO L495 AbstractCegarLoop]: Abstraction has 1546 states and 1909 transitions. [2022-11-02 20:57:23,825 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 15 states have (on average 8.8) internal successors, (132), 17 states have internal predecessors, (132), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-02 20:57:23,825 INFO L276 IsEmpty]: Start isEmpty. Operand 1546 states and 1909 transitions. [2022-11-02 20:57:23,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-11-02 20:57:23,826 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:57:23,826 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 20:57:23,853 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bcdd93f-c9b1-4586-a8e2-97e8a1d555a8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2022-11-02 20:57:24,066 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bcdd93f-c9b1-4586-a8e2-97e8a1d555a8/bin/uautomizer-Dbtcem3rbc/cvc4 --incremental --print-success --lang smt (21)] Forceful destruction successful, exit code 0 [2022-11-02 20:57:24,240 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bcdd93f-c9b1-4586-a8e2-97e8a1d555a8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bcdd93f-c9b1-4586-a8e2-97e8a1d555a8/bin/uautomizer-Dbtcem3rbc/cvc4 --incremental --print-success --lang smt [2022-11-02 20:57:24,240 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr71REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 645 more)] === [2022-11-02 20:57:24,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:57:24,240 INFO L85 PathProgramCache]: Analyzing trace with hash 1185723039, now seen corresponding path program 1 times [2022-11-02 20:57:24,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:57:24,241 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [806503778] [2022-11-02 20:57:24,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:57:24,241 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:57:24,241 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bcdd93f-c9b1-4586-a8e2-97e8a1d555a8/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:57:24,242 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bcdd93f-c9b1-4586-a8e2-97e8a1d555a8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:57:24,244 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bcdd93f-c9b1-4586-a8e2-97e8a1d555a8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2022-11-02 20:57:24,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:57:25,035 INFO L263 TraceCheckSpWp]: Trace formula consists of 769 conjuncts, 110 conjunts are in the unsatisfiable core [2022-11-02 20:57:25,050 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:57:25,055 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 20:57:25,301 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 20:57:25,313 INFO L356 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-02 20:57:25,313 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 20:57:25,337 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 20:57:25,347 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 20:57:25,464 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 18 treesize of output 10 [2022-11-02 20:57:25,468 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 7 treesize of output 3 [2022-11-02 20:57:25,574 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_arrayElimCell_23 (_ BitVec 32))) (= (select |c_#length| v_arrayElimCell_23) (_ bv44 32))) (exists ((v_ArrVal_2458 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2458))) (exists ((v_ArrVal_2459 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2459)))) is different from true [2022-11-02 20:57:25,590 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_arrayElimCell_23 (_ BitVec 32))) (= (select |c_#length| v_arrayElimCell_23) (_ bv44 32))) (exists ((v_ArrVal_2460 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2460) |c_#memory_$Pointer$.base|)) (exists ((v_ArrVal_2461 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2461)))) is different from true [2022-11-02 20:57:25,604 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_arrayElimCell_23 (_ BitVec 32))) (= (select |c_#length| v_arrayElimCell_23) (_ bv44 32))) (exists ((v_ArrVal_2462 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2462))) (exists ((v_ArrVal_2463 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2463)))) is different from true [2022-11-02 20:57:25,616 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_arrayElimCell_23 (_ BitVec 32))) (= (select |c_#length| v_arrayElimCell_23) (_ bv44 32))) (exists ((v_ArrVal_2465 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2465))) (exists ((v_ArrVal_2464 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2464)))) is different from true [2022-11-02 20:57:25,628 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_arrayElimCell_23 (_ BitVec 32))) (= (select |c_#length| v_arrayElimCell_23) (_ bv44 32))) (exists ((v_ArrVal_2466 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2466))) (exists ((v_ArrVal_2467 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2467)))) is different from true [2022-11-02 20:57:25,644 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_arrayElimCell_23 (_ BitVec 32))) (= (select |c_#length| v_arrayElimCell_23) (_ bv44 32))) (exists ((v_ArrVal_2469 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2469))) (exists ((v_ArrVal_2468 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2468) |c_#memory_$Pointer$.offset|))) is different from true [2022-11-02 20:57:25,657 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_arrayElimCell_23 (_ BitVec 32))) (= (select |c_#length| v_arrayElimCell_23) (_ bv44 32))) (exists ((v_ArrVal_2471 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2471))) (exists ((v_ArrVal_2470 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2470) |c_#memory_$Pointer$.offset|))) is different from true [2022-11-02 20:57:25,670 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_arrayElimCell_23 (_ BitVec 32))) (= (select |c_#length| v_arrayElimCell_23) (_ bv44 32))) (exists ((v_ArrVal_2473 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2473))) (exists ((v_ArrVal_2472 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2472)))) is different from true [2022-11-02 20:57:25,685 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_arrayElimCell_23 (_ BitVec 32))) (= (select |c_#length| v_arrayElimCell_23) (_ bv44 32))) (exists ((v_ArrVal_2475 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2475) |c_#memory_$Pointer$.base|)) (exists ((v_ArrVal_2474 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2474) |c_#memory_$Pointer$.offset|))) is different from true [2022-11-02 20:57:25,700 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_arrayElimCell_23 (_ BitVec 32))) (= (select |c_#length| v_arrayElimCell_23) (_ bv44 32))) (exists ((v_ArrVal_2477 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2477))) (exists ((v_ArrVal_2476 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2476)))) is different from true [2022-11-02 20:57:25,714 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_arrayElimCell_23 (_ BitVec 32))) (= (select |c_#length| v_arrayElimCell_23) (_ bv44 32))) (exists ((v_ArrVal_2478 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2478) |c_#memory_$Pointer$.base|)) (exists ((v_ArrVal_2479 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2479)))) is different from true [2022-11-02 20:57:25,728 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_arrayElimCell_23 (_ BitVec 32))) (= (select |c_#length| v_arrayElimCell_23) (_ bv44 32))) (exists ((v_ArrVal_2481 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2481) |c_#memory_$Pointer$.base|)) (exists ((v_ArrVal_2480 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2480) |c_#memory_$Pointer$.offset|))) is different from true [2022-11-02 20:57:25,741 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_arrayElimCell_23 (_ BitVec 32))) (= (select |c_#length| v_arrayElimCell_23) (_ bv44 32))) (exists ((v_ArrVal_2483 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2483) |c_#memory_$Pointer$.offset|)) (exists ((v_ArrVal_2482 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2482) |c_#memory_$Pointer$.base|))) is different from true [2022-11-02 20:57:25,754 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_arrayElimCell_23 (_ BitVec 32))) (= (select |c_#length| v_arrayElimCell_23) (_ bv44 32))) (exists ((v_ArrVal_2484 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2484))) (exists ((v_ArrVal_2485 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2485)))) is different from true [2022-11-02 20:57:25,768 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_arrayElimCell_23 (_ BitVec 32))) (= (select |c_#length| v_arrayElimCell_23) (_ bv44 32))) (exists ((v_ArrVal_2487 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2487) |c_#memory_$Pointer$.offset|)) (exists ((v_ArrVal_2486 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2486)))) is different from true [2022-11-02 20:57:25,780 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_arrayElimCell_23 (_ BitVec 32))) (= (select |c_#length| v_arrayElimCell_23) (_ bv44 32))) (exists ((v_ArrVal_2488 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2488))) (exists ((v_ArrVal_2489 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2489)))) is different from true [2022-11-02 20:57:25,791 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_arrayElimCell_23 (_ BitVec 32))) (= (select |c_#length| v_arrayElimCell_23) (_ bv44 32))) (exists ((v_ArrVal_2491 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2491))) (exists ((v_ArrVal_2490 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2490)))) is different from true [2022-11-02 20:57:25,803 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_arrayElimCell_23 (_ BitVec 32))) (= (select |c_#length| v_arrayElimCell_23) (_ bv44 32))) (exists ((v_ArrVal_2493 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2493) |c_#memory_$Pointer$.base|)) (exists ((v_ArrVal_2492 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2492) |c_#memory_$Pointer$.offset|))) is different from true [2022-11-02 20:57:25,815 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_arrayElimCell_23 (_ BitVec 32))) (= (select |c_#length| v_arrayElimCell_23) (_ bv44 32))) (exists ((v_ArrVal_2495 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2495) |c_#memory_$Pointer$.offset|)) (exists ((v_ArrVal_2494 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2494)))) is different from true [2022-11-02 20:57:25,827 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_arrayElimCell_23 (_ BitVec 32))) (= (select |c_#length| v_arrayElimCell_23) (_ bv44 32))) (exists ((v_ArrVal_2497 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2497) |c_#memory_$Pointer$.offset|)) (exists ((v_ArrVal_2496 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2496) |c_#memory_$Pointer$.base|))) is different from true [2022-11-02 20:57:25,843 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_arrayElimCell_23 (_ BitVec 32))) (= (select |c_#length| v_arrayElimCell_23) (_ bv44 32))) (exists ((v_ArrVal_2499 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2499) |c_#memory_$Pointer$.offset|)) (exists ((v_ArrVal_2498 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2498) |c_#memory_$Pointer$.base|))) is different from true [2022-11-02 20:57:25,855 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_arrayElimCell_23 (_ BitVec 32))) (= (select |c_#length| v_arrayElimCell_23) (_ bv44 32))) (exists ((v_ArrVal_2501 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2501))) (exists ((v_ArrVal_2500 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2500)))) is different from true [2022-11-02 20:57:25,867 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_arrayElimCell_23 (_ BitVec 32))) (= (select |c_#length| v_arrayElimCell_23) (_ bv44 32))) (exists ((v_ArrVal_2503 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2503) |c_#memory_$Pointer$.base|)) (exists ((v_ArrVal_2502 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2502)))) is different from true [2022-11-02 20:57:25,878 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_arrayElimCell_23 (_ BitVec 32))) (= (select |c_#length| v_arrayElimCell_23) (_ bv44 32))) (exists ((v_ArrVal_2505 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2505) |c_#memory_$Pointer$.offset|)) (exists ((v_ArrVal_2504 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2504)))) is different from true [2022-11-02 20:57:25,890 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_arrayElimCell_23 (_ BitVec 32))) (= (select |c_#length| v_arrayElimCell_23) (_ bv44 32))) (exists ((v_ArrVal_2507 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$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 20:57:25,903 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_arrayElimCell_23 (_ BitVec 32))) (= (select |c_#length| v_arrayElimCell_23) (_ bv44 32))) (exists ((v_ArrVal_2509 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2509) |c_#memory_$Pointer$.base|)) (exists ((v_ArrVal_2508 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2508) |c_#memory_$Pointer$.offset|))) is different from true [2022-11-02 20:57:25,914 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_arrayElimCell_23 (_ BitVec 32))) (= (select |c_#length| v_arrayElimCell_23) (_ bv44 32))) (exists ((v_ArrVal_2511 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2511))) (exists ((v_ArrVal_2510 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2510)))) is different from true [2022-11-02 20:57:25,926 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_arrayElimCell_23 (_ BitVec 32))) (= (select |c_#length| v_arrayElimCell_23) (_ bv44 32))) (exists ((v_ArrVal_2512 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2512) |c_#memory_$Pointer$.offset|)) (exists ((v_ArrVal_2513 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2513)))) is different from true [2022-11-02 20:57:25,937 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_2515 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2515))) (exists ((v_arrayElimCell_23 (_ BitVec 32))) (= (select |c_#length| v_arrayElimCell_23) (_ bv44 32))) (exists ((v_ArrVal_2514 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2514) |c_#memory_$Pointer$.offset|))) is different from true [2022-11-02 20:57:25,949 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_arrayElimCell_23 (_ BitVec 32))) (= (select |c_#length| v_arrayElimCell_23) (_ bv44 32))) (exists ((v_ArrVal_2517 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2517) |c_#memory_$Pointer$.base|)) (exists ((v_ArrVal_2516 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2516)))) is different from true [2022-11-02 20:57:25,961 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_arrayElimCell_23 (_ BitVec 32))) (= (select |c_#length| v_arrayElimCell_23) (_ bv44 32))) (exists ((v_ArrVal_2518 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2518))) (exists ((v_ArrVal_2519 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2519)))) is different from true [2022-11-02 20:57:25,973 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_arrayElimCell_23 (_ BitVec 32))) (= (select |c_#length| v_arrayElimCell_23) (_ bv44 32))) (exists ((v_ArrVal_2521 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2521) |c_#memory_$Pointer$.base|)) (exists ((v_ArrVal_2520 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2520)))) is different from true [2022-11-02 20:57:25,984 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_arrayElimCell_23 (_ BitVec 32))) (= (select |c_#length| v_arrayElimCell_23) (_ bv44 32))) (exists ((v_ArrVal_2522 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2522))) (exists ((v_ArrVal_2523 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2523) |c_#memory_$Pointer$.offset|))) is different from true [2022-11-02 20:57:25,996 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_arrayElimCell_23 (_ BitVec 32))) (= (select |c_#length| v_arrayElimCell_23) (_ bv44 32))) (exists ((v_ArrVal_2525 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$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)))) is different from true [2022-11-02 20:57:26,007 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_arrayElimCell_23 (_ BitVec 32))) (= (select |c_#length| v_arrayElimCell_23) (_ bv44 32))) (exists ((v_ArrVal_2527 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2527))) (exists ((v_ArrVal_2526 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2526) |c_#memory_$Pointer$.base|))) is different from true [2022-11-02 20:57:26,019 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_arrayElimCell_23 (_ BitVec 32))) (= (select |c_#length| v_arrayElimCell_23) (_ bv44 32))) (exists ((v_ArrVal_2528 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2528) |c_#memory_$Pointer$.offset|)) (exists ((v_ArrVal_2529 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2529) |c_#memory_$Pointer$.base|))) is different from true [2022-11-02 20:57:26,031 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_arrayElimCell_23 (_ BitVec 32))) (= (select |c_#length| v_arrayElimCell_23) (_ bv44 32))) (exists ((v_ArrVal_2531 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2531))) (exists ((v_ArrVal_2530 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2530)))) is different from true [2022-11-02 20:57:26,042 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_arrayElimCell_23 (_ BitVec 32))) (= (select |c_#length| v_arrayElimCell_23) (_ bv44 32))) (exists ((v_ArrVal_2532 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$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 20:57:26,057 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_arrayElimCell_23 (_ BitVec 32))) (= (select |c_#length| v_arrayElimCell_23) (_ bv44 32))) (exists ((v_ArrVal_2534 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2534) |c_#memory_$Pointer$.offset|)) (exists ((v_ArrVal_2535 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2535)))) is different from true [2022-11-02 20:57:26,068 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_arrayElimCell_23 (_ BitVec 32))) (= (select |c_#length| v_arrayElimCell_23) (_ bv44 32))) (exists ((v_ArrVal_2537 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2537))) (exists ((v_ArrVal_2536 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2536)))) is different from true [2022-11-02 20:57:26,080 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_arrayElimCell_23 (_ BitVec 32))) (= (select |c_#length| v_arrayElimCell_23) (_ bv44 32))) (exists ((v_ArrVal_2539 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2539))) (exists ((v_ArrVal_2538 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2538)))) is different from true [2022-11-02 20:57:26,092 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_arrayElimCell_23 (_ BitVec 32))) (= (select |c_#length| v_arrayElimCell_23) (_ bv44 32))) (exists ((v_ArrVal_2541 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2541))) (exists ((v_ArrVal_2540 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_2540) |c_#memory_$Pointer$.offset|))) is different from true [2022-11-02 20:57:26,104 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_arrayElimCell_23 (_ BitVec 32))) (= (select |c_#length| v_arrayElimCell_23) (_ bv44 32))) (exists ((v_ArrVal_2543 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$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)))) is different from true [2022-11-02 20:57:26,141 INFO L356 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-02 20:57:26,141 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 20:57:26,151 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 20:57:26,225 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 25 treesize of output 13 [2022-11-02 20:57:26,233 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 15 treesize of output 7 [2022-11-02 20:57:26,265 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 989 not checked. [2022-11-02 20:57:26,265 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:57:27,322 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_2635 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_2635) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv16 32) .cse0) (bvadd (_ bv20 32) .cse0)))) (forall ((v_ArrVal_2634 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2635 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv20 32) (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_2635) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_2634) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2022-11-02 20:57:27,330 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:57:27,330 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [806503778] [2022-11-02 20:57:27,330 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [806503778] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:57:27,330 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2103356729] [2022-11-02 20:57:27,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:57:27,331 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-02 20:57:27,331 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bcdd93f-c9b1-4586-a8e2-97e8a1d555a8/bin/uautomizer-Dbtcem3rbc/cvc4 [2022-11-02 20:57:27,333 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bcdd93f-c9b1-4586-a8e2-97e8a1d555a8/bin/uautomizer-Dbtcem3rbc/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-02 20:57:27,340 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bcdd93f-c9b1-4586-a8e2-97e8a1d555a8/bin/uautomizer-Dbtcem3rbc/cvc4 --incremental --print-success --lang smt (23)] Waiting until timeout for monitored process