./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test1-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version dbf71c69 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_202b077d-d7c2-4bd8-9656-0cc95d477208/bin/uautomizer-J5u9QxTXDZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_202b077d-d7c2-4bd8-9656-0cc95d477208/bin/uautomizer-J5u9QxTXDZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_202b077d-d7c2-4bd8-9656-0cc95d477208/bin/uautomizer-J5u9QxTXDZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_202b077d-d7c2-4bd8-9656-0cc95d477208/bin/uautomizer-J5u9QxTXDZ/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test1-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_202b077d-d7c2-4bd8-9656-0cc95d477208/bin/uautomizer-J5u9QxTXDZ/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_202b077d-d7c2-4bd8-9656-0cc95d477208/bin/uautomizer-J5u9QxTXDZ --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash bfb70cce6cd508003f6161c30aa2ac99ac8ddeb6209ddd86b65ca0c623c2fb1c --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-dbf71c6-m [2022-10-17 10:15:33,705 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 10:15:33,707 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 10:15:33,738 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 10:15:33,738 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 10:15:33,740 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 10:15:33,741 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 10:15:33,743 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 10:15:33,745 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 10:15:33,746 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 10:15:33,747 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 10:15:33,749 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 10:15:33,750 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 10:15:33,751 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 10:15:33,752 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 10:15:33,753 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 10:15:33,754 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 10:15:33,756 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 10:15:33,758 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 10:15:33,760 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 10:15:33,762 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 10:15:33,763 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 10:15:33,764 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 10:15:33,765 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 10:15:33,770 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 10:15:33,771 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 10:15:33,771 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 10:15:33,772 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 10:15:33,773 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 10:15:33,774 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 10:15:33,774 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 10:15:33,775 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 10:15:33,776 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 10:15:33,777 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 10:15:33,778 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 10:15:33,779 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 10:15:33,779 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 10:15:33,780 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 10:15:33,780 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 10:15:33,781 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 10:15:33,782 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 10:15:33,783 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_202b077d-d7c2-4bd8-9656-0cc95d477208/bin/uautomizer-J5u9QxTXDZ/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-10-17 10:15:33,807 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 10:15:33,808 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 10:15:33,808 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-17 10:15:33,808 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-17 10:15:33,809 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-17 10:15:33,809 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-17 10:15:33,810 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-17 10:15:33,810 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-17 10:15:33,810 INFO L138 SettingsManager]: * Use SBE=true [2022-10-17 10:15:33,811 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 10:15:33,811 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-17 10:15:33,811 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-10-17 10:15:33,811 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-17 10:15:33,812 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-17 10:15:33,812 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 10:15:33,812 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-10-17 10:15:33,813 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-10-17 10:15:33,813 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-10-17 10:15:33,813 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-17 10:15:33,813 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-10-17 10:15:33,814 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-17 10:15:33,814 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 10:15:33,814 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 10:15:33,814 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-17 10:15:33,815 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-17 10:15:33,815 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:15:33,815 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 10:15:33,815 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-17 10:15:33,816 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-17 10:15:33,816 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-17 10:15:33,816 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_202b077d-d7c2-4bd8-9656-0cc95d477208/bin/uautomizer-J5u9QxTXDZ/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_202b077d-d7c2-4bd8-9656-0cc95d477208/bin/uautomizer-J5u9QxTXDZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bfb70cce6cd508003f6161c30aa2ac99ac8ddeb6209ddd86b65ca0c623c2fb1c [2022-10-17 10:15:34,092 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 10:15:34,112 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 10:15:34,115 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 10:15:34,116 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 10:15:34,117 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 10:15:34,118 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_202b077d-d7c2-4bd8-9656-0cc95d477208/bin/uautomizer-J5u9QxTXDZ/../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test1-2.i [2022-10-17 10:15:34,179 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_202b077d-d7c2-4bd8-9656-0cc95d477208/bin/uautomizer-J5u9QxTXDZ/data/80379ff39/aea6208d5b1d4896a9080fe8d0ac3e39/FLAGe25d20bac [2022-10-17 10:15:34,755 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 10:15:34,756 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_202b077d-d7c2-4bd8-9656-0cc95d477208/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test1-2.i [2022-10-17 10:15:34,789 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_202b077d-d7c2-4bd8-9656-0cc95d477208/bin/uautomizer-J5u9QxTXDZ/data/80379ff39/aea6208d5b1d4896a9080fe8d0ac3e39/FLAGe25d20bac [2022-10-17 10:15:35,016 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_202b077d-d7c2-4bd8-9656-0cc95d477208/bin/uautomizer-J5u9QxTXDZ/data/80379ff39/aea6208d5b1d4896a9080fe8d0ac3e39 [2022-10-17 10:15:35,020 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 10:15:35,023 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 10:15:35,024 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 10:15:35,025 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 10:15:35,028 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 10:15:35,030 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:15:35" (1/1) ... [2022-10-17 10:15:35,031 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f022e15 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:15:35, skipping insertion in model container [2022-10-17 10:15:35,031 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:15:35" (1/1) ... [2022-10-17 10:15:35,039 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 10:15:35,114 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 10:15:35,631 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_202b077d-d7c2-4bd8-9656-0cc95d477208/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test1-2.i[33021,33034] [2022-10-17 10:15:35,727 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:15:35,736 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2022-10-17 10:15:35,746 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@3420895e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:15:35, skipping insertion in model container [2022-10-17 10:15:35,747 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 10:15:35,747 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2022-10-17 10:15:35,749 INFO L158 Benchmark]: Toolchain (without parser) took 725.59ms. Allocated memory is still 115.3MB. Free memory was 75.5MB in the beginning and 82.6MB in the end (delta: -7.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-10-17 10:15:35,751 INFO L158 Benchmark]: CDTParser took 0.24ms. Allocated memory is still 115.3MB. Free memory is still 94.7MB. There was no memory consumed. Max. memory is 16.1GB. [2022-10-17 10:15:35,752 INFO L158 Benchmark]: CACSL2BoogieTranslator took 722.70ms. Allocated memory is still 115.3MB. Free memory was 75.3MB in the beginning and 82.6MB in the end (delta: -7.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-10-17 10:15:35,756 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24ms. Allocated memory is still 115.3MB. Free memory is still 94.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 722.70ms. Allocated memory is still 115.3MB. Free memory was 75.3MB in the beginning and 82.6MB in the end (delta: -7.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 751]: Unsupported Syntax Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_202b077d-d7c2-4bd8-9656-0cc95d477208/bin/uautomizer-J5u9QxTXDZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_202b077d-d7c2-4bd8-9656-0cc95d477208/bin/uautomizer-J5u9QxTXDZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_202b077d-d7c2-4bd8-9656-0cc95d477208/bin/uautomizer-J5u9QxTXDZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_202b077d-d7c2-4bd8-9656-0cc95d477208/bin/uautomizer-J5u9QxTXDZ/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test1-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_202b077d-d7c2-4bd8-9656-0cc95d477208/bin/uautomizer-J5u9QxTXDZ/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_202b077d-d7c2-4bd8-9656-0cc95d477208/bin/uautomizer-J5u9QxTXDZ --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash bfb70cce6cd508003f6161c30aa2ac99ac8ddeb6209ddd86b65ca0c623c2fb1c --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-dbf71c6-m [2022-10-17 10:15:37,954 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 10:15:37,958 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 10:15:38,016 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 10:15:38,017 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 10:15:38,021 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 10:15:38,024 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 10:15:38,031 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 10:15:38,037 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 10:15:38,043 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 10:15:38,044 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 10:15:38,047 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 10:15:38,047 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 10:15:38,050 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 10:15:38,052 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 10:15:38,054 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 10:15:38,055 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 10:15:38,056 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 10:15:38,058 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 10:15:38,067 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 10:15:38,069 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 10:15:38,071 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 10:15:38,074 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 10:15:38,076 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 10:15:38,087 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 10:15:38,087 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 10:15:38,088 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 10:15:38,090 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 10:15:38,090 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 10:15:38,092 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 10:15:38,092 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 10:15:38,093 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 10:15:38,095 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 10:15:38,096 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 10:15:38,097 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 10:15:38,097 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 10:15:38,098 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 10:15:38,098 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 10:15:38,098 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 10:15:38,100 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 10:15:38,101 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 10:15:38,102 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_202b077d-d7c2-4bd8-9656-0cc95d477208/bin/uautomizer-J5u9QxTXDZ/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2022-10-17 10:15:38,145 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 10:15:38,145 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 10:15:38,146 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-17 10:15:38,146 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-17 10:15:38,147 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-17 10:15:38,147 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-17 10:15:38,148 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-17 10:15:38,148 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-17 10:15:38,149 INFO L138 SettingsManager]: * Use SBE=true [2022-10-17 10:15:38,149 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 10:15:38,150 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-17 10:15:38,150 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-10-17 10:15:38,150 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-17 10:15:38,150 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-17 10:15:38,151 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 10:15:38,151 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-10-17 10:15:38,151 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-10-17 10:15:38,151 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-10-17 10:15:38,152 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-17 10:15:38,152 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-10-17 10:15:38,152 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-10-17 10:15:38,152 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-10-17 10:15:38,152 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-17 10:15:38,152 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 10:15:38,153 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 10:15:38,153 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-17 10:15:38,153 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-17 10:15:38,154 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:15:38,154 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 10:15:38,154 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-17 10:15:38,154 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-10-17 10:15:38,154 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-10-17 10:15:38,155 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-10-17 10:15:38,155 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_202b077d-d7c2-4bd8-9656-0cc95d477208/bin/uautomizer-J5u9QxTXDZ/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_202b077d-d7c2-4bd8-9656-0cc95d477208/bin/uautomizer-J5u9QxTXDZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bfb70cce6cd508003f6161c30aa2ac99ac8ddeb6209ddd86b65ca0c623c2fb1c [2022-10-17 10:15:38,595 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 10:15:38,624 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 10:15:38,629 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 10:15:38,630 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 10:15:38,631 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 10:15:38,632 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_202b077d-d7c2-4bd8-9656-0cc95d477208/bin/uautomizer-J5u9QxTXDZ/../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test1-2.i [2022-10-17 10:15:38,720 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_202b077d-d7c2-4bd8-9656-0cc95d477208/bin/uautomizer-J5u9QxTXDZ/data/1692e8bb5/ab31020fee6f4693b9f0bd7361814da9/FLAG045028548 [2022-10-17 10:15:39,395 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 10:15:39,396 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_202b077d-d7c2-4bd8-9656-0cc95d477208/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test1-2.i [2022-10-17 10:15:39,424 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_202b077d-d7c2-4bd8-9656-0cc95d477208/bin/uautomizer-J5u9QxTXDZ/data/1692e8bb5/ab31020fee6f4693b9f0bd7361814da9/FLAG045028548 [2022-10-17 10:15:39,598 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_202b077d-d7c2-4bd8-9656-0cc95d477208/bin/uautomizer-J5u9QxTXDZ/data/1692e8bb5/ab31020fee6f4693b9f0bd7361814da9 [2022-10-17 10:15:39,600 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 10:15:39,603 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 10:15:39,607 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 10:15:39,607 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 10:15:39,612 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 10:15:39,613 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:15:39" (1/1) ... [2022-10-17 10:15:39,616 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@595528b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:15:39, skipping insertion in model container [2022-10-17 10:15:39,616 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:15:39" (1/1) ... [2022-10-17 10:15:39,624 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 10:15:39,702 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 10:15:40,116 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_202b077d-d7c2-4bd8-9656-0cc95d477208/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test1-2.i[33021,33034] [2022-10-17 10:15:40,250 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:15:40,261 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-10-17 10:15:40,272 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 10:15:40,290 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_202b077d-d7c2-4bd8-9656-0cc95d477208/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test1-2.i[33021,33034] [2022-10-17 10:15:40,369 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:15:40,388 INFO L203 MainTranslator]: Completed pre-run [2022-10-17 10:15:40,450 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_202b077d-d7c2-4bd8-9656-0cc95d477208/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test1-2.i[33021,33034] [2022-10-17 10:15:40,517 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:15:40,579 INFO L208 MainTranslator]: Completed translation [2022-10-17 10:15:40,579 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:15:40 WrapperNode [2022-10-17 10:15:40,579 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 10:15:40,581 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-17 10:15:40,581 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-17 10:15:40,581 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-17 10:15:40,588 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:15:40" (1/1) ... [2022-10-17 10:15:40,645 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:15:40" (1/1) ... [2022-10-17 10:15:40,718 INFO L138 Inliner]: procedures = 180, calls = 237, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 792 [2022-10-17 10:15:40,718 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-17 10:15:40,719 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-17 10:15:40,719 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-17 10:15:40,719 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-17 10:15:40,742 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:15:40" (1/1) ... [2022-10-17 10:15:40,742 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:15:40" (1/1) ... [2022-10-17 10:15:40,752 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:15:40" (1/1) ... [2022-10-17 10:15:40,752 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:15:40" (1/1) ... [2022-10-17 10:15:40,809 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:15:40" (1/1) ... [2022-10-17 10:15:40,829 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:15:40" (1/1) ... [2022-10-17 10:15:40,843 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:15:40" (1/1) ... [2022-10-17 10:15:40,853 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:15:40" (1/1) ... [2022-10-17 10:15:40,864 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-17 10:15:40,872 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-17 10:15:40,874 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-17 10:15:40,874 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-17 10:15:40,875 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:15:40" (1/1) ... [2022-10-17 10:15:40,881 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:15:40,892 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_202b077d-d7c2-4bd8-9656-0cc95d477208/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:15:40,905 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_202b077d-d7c2-4bd8-9656-0cc95d477208/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-17 10:15:40,965 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_202b077d-d7c2-4bd8-9656-0cc95d477208/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-17 10:15:40,991 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2022-10-17 10:15:40,992 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-10-17 10:15:40,992 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-10-17 10:15:40,993 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-10-17 10:15:40,995 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-10-17 10:15:40,995 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-10-17 10:15:40,995 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-10-17 10:15:40,995 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-17 10:15:40,996 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-10-17 10:15:40,996 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-10-17 10:15:40,996 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-10-17 10:15:40,996 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-10-17 10:15:40,996 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-10-17 10:15:40,996 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-10-17 10:15:40,997 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-17 10:15:40,997 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-17 10:15:41,304 INFO L235 CfgBuilder]: Building ICFG [2022-10-17 10:15:41,308 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-17 10:15:41,312 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-10-17 10:15:45,281 INFO L276 CfgBuilder]: Performing block encoding [2022-10-17 10:15:45,294 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-17 10:15:45,294 INFO L300 CfgBuilder]: Removed 40 assume(true) statements. [2022-10-17 10:15:45,297 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:15:45 BoogieIcfgContainer [2022-10-17 10:15:45,297 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-17 10:15:45,312 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-17 10:15:45,312 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-17 10:15:45,315 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-17 10:15:45,316 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.10 10:15:39" (1/3) ... [2022-10-17 10:15:45,316 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a4cc75f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:15:45, skipping insertion in model container [2022-10-17 10:15:45,316 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:15:40" (2/3) ... [2022-10-17 10:15:45,317 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a4cc75f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:15:45, skipping insertion in model container [2022-10-17 10:15:45,317 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:15:45" (3/3) ... [2022-10-17 10:15:45,318 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_OAT_test1-2.i [2022-10-17 10:15:45,337 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-17 10:15:45,338 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 435 error locations. [2022-10-17 10:15:45,399 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-17 10:15:45,415 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;@31511789, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-17 10:15:45,415 INFO L358 AbstractCegarLoop]: Starting to check reachability of 435 error locations. [2022-10-17 10:15:45,426 INFO L276 IsEmpty]: Start isEmpty. Operand has 867 states, 419 states have (on average 2.252983293556086) internal successors, (944), 861 states have internal predecessors, (944), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2022-10-17 10:15:45,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-10-17 10:15:45,432 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:15:45,433 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-10-17 10:15:45,433 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 432 more)] === [2022-10-17 10:15:45,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:15:45,441 INFO L85 PathProgramCache]: Analyzing trace with hash 37287509, now seen corresponding path program 1 times [2022-10-17 10:15:45,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-10-17 10:15:45,455 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [645502325] [2022-10-17 10:15:45,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:15:45,456 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-10-17 10:15:45,456 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_202b077d-d7c2-4bd8-9656-0cc95d477208/bin/uautomizer-J5u9QxTXDZ/mathsat [2022-10-17 10:15:45,459 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_202b077d-d7c2-4bd8-9656-0cc95d477208/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-10-17 10:15:45,461 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_202b077d-d7c2-4bd8-9656-0cc95d477208/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-10-17 10:15:45,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:15:45,576 INFO L263 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 1 conjunts are in the unsatisfiable core [2022-10-17 10:15:45,581 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:15:45,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:15:45,599 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 10:15:45,600 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-10-17 10:15:45,600 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [645502325] [2022-10-17 10:15:45,601 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [645502325] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:15:45,601 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:15:45,601 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-17 10:15:45,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130061780] [2022-10-17 10:15:45,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:15:45,608 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-10-17 10:15:45,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-10-17 10:15:45,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-10-17 10:15:45,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-10-17 10:15:45,639 INFO L87 Difference]: Start difference. First operand has 867 states, 419 states have (on average 2.252983293556086) internal successors, (944), 861 states have internal predecessors, (944), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) 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) [2022-10-17 10:15:45,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:15:45,700 INFO L93 Difference]: Finished difference Result 858 states and 916 transitions. [2022-10-17 10:15:45,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-17 10:15:45,702 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 [2022-10-17 10:15:45,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:15:45,724 INFO L225 Difference]: With dead ends: 858 [2022-10-17 10:15:45,724 INFO L226 Difference]: Without dead ends: 856 [2022-10-17 10:15:45,726 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 [2022-10-17 10:15:45,742 INFO L413 NwaCegarLoop]: 916 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, 916 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 [2022-10-17 10:15:45,743 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 916 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-17 10:15:45,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 856 states. [2022-10-17 10:15:45,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 856 to 856. [2022-10-17 10:15:45,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 856 states, 414 states have (on average 2.1449275362318843) internal successors, (888), 850 states have internal predecessors, (888), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2022-10-17 10:15:45,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 856 states to 856 states and 914 transitions. [2022-10-17 10:15:45,846 INFO L78 Accepts]: Start accepts. Automaton has 856 states and 914 transitions. Word has length 5 [2022-10-17 10:15:45,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:15:45,846 INFO L495 AbstractCegarLoop]: Abstraction has 856 states and 914 transitions. [2022-10-17 10:15:45,847 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) [2022-10-17 10:15:45,847 INFO L276 IsEmpty]: Start isEmpty. Operand 856 states and 914 transitions. [2022-10-17 10:15:45,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-10-17 10:15:45,847 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:15:45,848 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-10-17 10:15:45,859 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_202b077d-d7c2-4bd8-9656-0cc95d477208/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2022-10-17 10:15:46,058 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_202b077d-d7c2-4bd8-9656-0cc95d477208/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 [2022-10-17 10:15:46,059 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 432 more)] === [2022-10-17 10:15:46,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:15:46,060 INFO L85 PathProgramCache]: Analyzing trace with hash 37287571, now seen corresponding path program 1 times [2022-10-17 10:15:46,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-10-17 10:15:46,060 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [691165414] [2022-10-17 10:15:46,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:15:46,061 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-10-17 10:15:46,061 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_202b077d-d7c2-4bd8-9656-0cc95d477208/bin/uautomizer-J5u9QxTXDZ/mathsat [2022-10-17 10:15:46,062 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_202b077d-d7c2-4bd8-9656-0cc95d477208/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-10-17 10:15:46,088 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_202b077d-d7c2-4bd8-9656-0cc95d477208/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-10-17 10:15:46,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:15:46,189 INFO L263 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 3 conjunts are in the unsatisfiable core [2022-10-17 10:15:46,192 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:15:46,236 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-10-17 10:15:46,252 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:15:46,253 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 10:15:46,253 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-10-17 10:15:46,253 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [691165414] [2022-10-17 10:15:46,254 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [691165414] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:15:46,254 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:15:46,254 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-17 10:15:46,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382371608] [2022-10-17 10:15:46,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:15:46,256 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 10:15:46,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-10-17 10:15:46,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 10:15:46,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:15:46,258 INFO L87 Difference]: Start difference. First operand 856 states and 914 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) [2022-10-17 10:15:48,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:15:48,045 INFO L93 Difference]: Finished difference Result 814 states and 873 transitions. [2022-10-17 10:15:48,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 10:15:48,046 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 [2022-10-17 10:15:48,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:15:48,051 INFO L225 Difference]: With dead ends: 814 [2022-10-17 10:15:48,052 INFO L226 Difference]: Without dead ends: 814 [2022-10-17 10:15:48,052 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 [2022-10-17 10:15:48,053 INFO L413 NwaCegarLoop]: 544 mSDtfsCounter, 596 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 461 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 609 SdHoareTripleChecker+Valid, 662 SdHoareTripleChecker+Invalid, 515 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 461 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-10-17 10:15:48,054 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [609 Valid, 662 Invalid, 515 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 461 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-10-17 10:15:48,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 814 states. [2022-10-17 10:15:48,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 814 to 807. [2022-10-17 10:15:48,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 807 states, 414 states have (on average 2.026570048309179) internal successors, (839), 801 states have internal predecessors, (839), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2022-10-17 10:15:48,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 807 states to 807 states and 865 transitions. [2022-10-17 10:15:48,102 INFO L78 Accepts]: Start accepts. Automaton has 807 states and 865 transitions. Word has length 5 [2022-10-17 10:15:48,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:15:48,103 INFO L495 AbstractCegarLoop]: Abstraction has 807 states and 865 transitions. [2022-10-17 10:15:48,103 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) [2022-10-17 10:15:48,103 INFO L276 IsEmpty]: Start isEmpty. Operand 807 states and 865 transitions. [2022-10-17 10:15:48,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-10-17 10:15:48,104 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:15:48,104 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-10-17 10:15:48,118 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_202b077d-d7c2-4bd8-9656-0cc95d477208/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-10-17 10:15:48,314 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_202b077d-d7c2-4bd8-9656-0cc95d477208/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 [2022-10-17 10:15:48,316 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 432 more)] === [2022-10-17 10:15:48,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:15:48,317 INFO L85 PathProgramCache]: Analyzing trace with hash 37287572, now seen corresponding path program 1 times [2022-10-17 10:15:48,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-10-17 10:15:48,318 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1622163714] [2022-10-17 10:15:48,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:15:48,318 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-10-17 10:15:48,318 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_202b077d-d7c2-4bd8-9656-0cc95d477208/bin/uautomizer-J5u9QxTXDZ/mathsat [2022-10-17 10:15:48,321 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_202b077d-d7c2-4bd8-9656-0cc95d477208/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-10-17 10:15:48,323 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_202b077d-d7c2-4bd8-9656-0cc95d477208/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-10-17 10:15:48,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:15:48,415 INFO L263 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 4 conjunts are in the unsatisfiable core [2022-10-17 10:15:48,417 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:15:48,429 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-10-17 10:15:48,450 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:15:48,450 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 10:15:48,450 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-10-17 10:15:48,451 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1622163714] [2022-10-17 10:15:48,451 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1622163714] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:15:48,451 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:15:48,451 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-17 10:15:48,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365426602] [2022-10-17 10:15:48,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:15:48,452 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 10:15:48,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-10-17 10:15:48,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 10:15:48,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:15:48,453 INFO L87 Difference]: Start difference. First operand 807 states and 865 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) [2022-10-17 10:15:50,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:15:50,284 INFO L93 Difference]: Finished difference Result 874 states and 936 transitions. [2022-10-17 10:15:50,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 10:15:50,285 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 [2022-10-17 10:15:50,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:15:50,290 INFO L225 Difference]: With dead ends: 874 [2022-10-17 10:15:50,291 INFO L226 Difference]: Without dead ends: 874 [2022-10-17 10:15:50,291 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 [2022-10-17 10:15:50,292 INFO L413 NwaCegarLoop]: 740 mSDtfsCounter, 254 mSDsluCounter, 325 mSDsCounter, 0 mSdLazyCounter, 471 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 254 SdHoareTripleChecker+Valid, 1065 SdHoareTripleChecker+Invalid, 483 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 471 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-10-17 10:15:50,293 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [254 Valid, 1065 Invalid, 483 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 471 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-10-17 10:15:50,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 874 states. [2022-10-17 10:15:50,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 874 to 829. [2022-10-17 10:15:50,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 829 states, 446 states have (on average 2.006726457399103) internal successors, (895), 823 states have internal predecessors, (895), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2022-10-17 10:15:50,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 829 states to 829 states and 921 transitions. [2022-10-17 10:15:50,321 INFO L78 Accepts]: Start accepts. Automaton has 829 states and 921 transitions. Word has length 5 [2022-10-17 10:15:50,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:15:50,322 INFO L495 AbstractCegarLoop]: Abstraction has 829 states and 921 transitions. [2022-10-17 10:15:50,322 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) [2022-10-17 10:15:50,322 INFO L276 IsEmpty]: Start isEmpty. Operand 829 states and 921 transitions. [2022-10-17 10:15:50,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-10-17 10:15:50,323 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:15:50,323 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-10-17 10:15:50,337 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_202b077d-d7c2-4bd8-9656-0cc95d477208/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-10-17 10:15:50,537 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_202b077d-d7c2-4bd8-9656-0cc95d477208/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 [2022-10-17 10:15:50,540 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr322REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 432 more)] === [2022-10-17 10:15:50,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:15:50,541 INFO L85 PathProgramCache]: Analyzing trace with hash 1156735106, now seen corresponding path program 1 times [2022-10-17 10:15:50,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-10-17 10:15:50,541 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1712824366] [2022-10-17 10:15:50,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:15:50,542 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-10-17 10:15:50,542 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_202b077d-d7c2-4bd8-9656-0cc95d477208/bin/uautomizer-J5u9QxTXDZ/mathsat [2022-10-17 10:15:50,548 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_202b077d-d7c2-4bd8-9656-0cc95d477208/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-10-17 10:15:50,553 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_202b077d-d7c2-4bd8-9656-0cc95d477208/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-10-17 10:15:50,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:15:50,634 INFO L263 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 2 conjunts are in the unsatisfiable core [2022-10-17 10:15:50,635 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:15:50,647 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:15:50,647 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 10:15:50,648 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-10-17 10:15:50,648 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1712824366] [2022-10-17 10:15:50,648 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1712824366] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:15:50,648 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:15:50,648 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 10:15:50,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411632394] [2022-10-17 10:15:50,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:15:50,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 10:15:50,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-10-17 10:15:50,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 10:15:50,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:15:50,650 INFO L87 Difference]: Start difference. First operand 829 states and 921 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) [2022-10-17 10:15:50,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:15:50,744 INFO L93 Difference]: Finished difference Result 1410 states and 1563 transitions. [2022-10-17 10:15:50,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 10:15:50,748 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 [2022-10-17 10:15:50,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:15:50,757 INFO L225 Difference]: With dead ends: 1410 [2022-10-17 10:15:50,757 INFO L226 Difference]: Without dead ends: 1410 [2022-10-17 10:15:50,758 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 [2022-10-17 10:15:50,759 INFO L413 NwaCegarLoop]: 1076 mSDtfsCounter, 569 mSDsluCounter, 849 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 572 SdHoareTripleChecker+Valid, 1925 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 [2022-10-17 10:15:50,759 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [572 Valid, 1925 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-17 10:15:50,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1410 states. [2022-10-17 10:15:50,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1410 to 830. [2022-10-17 10:15:50,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 830 states, 447 states have (on average 2.004474272930649) internal successors, (896), 824 states have internal predecessors, (896), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2022-10-17 10:15:50,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 830 states to 830 states and 922 transitions. [2022-10-17 10:15:50,790 INFO L78 Accepts]: Start accepts. Automaton has 830 states and 922 transitions. Word has length 6 [2022-10-17 10:15:50,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:15:50,791 INFO L495 AbstractCegarLoop]: Abstraction has 830 states and 922 transitions. [2022-10-17 10:15:50,791 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) [2022-10-17 10:15:50,791 INFO L276 IsEmpty]: Start isEmpty. Operand 830 states and 922 transitions. [2022-10-17 10:15:50,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-10-17 10:15:50,792 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:15:50,792 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:15:50,811 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_202b077d-d7c2-4bd8-9656-0cc95d477208/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-10-17 10:15:51,008 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_202b077d-d7c2-4bd8-9656-0cc95d477208/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 [2022-10-17 10:15:51,008 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 432 more)] === [2022-10-17 10:15:51,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:15:51,009 INFO L85 PathProgramCache]: Analyzing trace with hash 334651453, now seen corresponding path program 1 times [2022-10-17 10:15:51,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-10-17 10:15:51,010 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1096874280] [2022-10-17 10:15:51,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:15:51,010 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-10-17 10:15:51,010 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_202b077d-d7c2-4bd8-9656-0cc95d477208/bin/uautomizer-J5u9QxTXDZ/mathsat [2022-10-17 10:15:51,012 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_202b077d-d7c2-4bd8-9656-0cc95d477208/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-10-17 10:15:51,051 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_202b077d-d7c2-4bd8-9656-0cc95d477208/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-10-17 10:15:51,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:15:51,159 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 2 conjunts are in the unsatisfiable core [2022-10-17 10:15:51,161 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:15:51,172 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:15:51,172 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 10:15:51,173 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-10-17 10:15:51,173 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1096874280] [2022-10-17 10:15:51,173 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1096874280] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:15:51,173 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:15:51,174 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 10:15:51,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50621124] [2022-10-17 10:15:51,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:15:51,174 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 10:15:51,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-10-17 10:15:51,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 10:15:51,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:15:51,176 INFO L87 Difference]: Start difference. First operand 830 states and 922 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) [2022-10-17 10:15:51,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:15:51,229 INFO L93 Difference]: Finished difference Result 794 states and 885 transitions. [2022-10-17 10:15:51,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 10:15:51,229 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 [2022-10-17 10:15:51,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:15:51,234 INFO L225 Difference]: With dead ends: 794 [2022-10-17 10:15:51,235 INFO L226 Difference]: Without dead ends: 794 [2022-10-17 10:15:51,235 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 [2022-10-17 10:15:51,236 INFO L413 NwaCegarLoop]: 807 mSDtfsCounter, 773 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 786 SdHoareTripleChecker+Valid, 837 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 [2022-10-17 10:15:51,237 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [786 Valid, 837 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-17 10:15:51,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 794 states. [2022-10-17 10:15:51,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 794 to 788. [2022-10-17 10:15:51,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 788 states, 429 states have (on average 1.9883449883449884) internal successors, (853), 782 states have internal predecessors, (853), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2022-10-17 10:15:51,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 788 states to 788 states and 879 transitions. [2022-10-17 10:15:51,260 INFO L78 Accepts]: Start accepts. Automaton has 788 states and 879 transitions. Word has length 11 [2022-10-17 10:15:51,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:15:51,261 INFO L495 AbstractCegarLoop]: Abstraction has 788 states and 879 transitions. [2022-10-17 10:15:51,261 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) [2022-10-17 10:15:51,261 INFO L276 IsEmpty]: Start isEmpty. Operand 788 states and 879 transitions. [2022-10-17 10:15:51,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-10-17 10:15:51,262 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:15:51,262 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:15:51,278 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_202b077d-d7c2-4bd8-9656-0cc95d477208/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-10-17 10:15:51,474 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_202b077d-d7c2-4bd8-9656-0cc95d477208/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 [2022-10-17 10:15:51,476 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr28REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 432 more)] === [2022-10-17 10:15:51,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:15:51,477 INFO L85 PathProgramCache]: Analyzing trace with hash -522505033, now seen corresponding path program 1 times [2022-10-17 10:15:51,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-10-17 10:15:51,477 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1781575410] [2022-10-17 10:15:51,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:15:51,478 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-10-17 10:15:51,478 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_202b077d-d7c2-4bd8-9656-0cc95d477208/bin/uautomizer-J5u9QxTXDZ/mathsat [2022-10-17 10:15:51,478 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_202b077d-d7c2-4bd8-9656-0cc95d477208/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-10-17 10:15:51,479 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_202b077d-d7c2-4bd8-9656-0cc95d477208/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-10-17 10:15:51,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:15:51,624 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 3 conjunts are in the unsatisfiable core [2022-10-17 10:15:51,627 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:15:51,658 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:15:51,658 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 10:15:51,658 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-10-17 10:15:51,658 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1781575410] [2022-10-17 10:15:51,659 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1781575410] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:15:51,659 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:15:51,659 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-17 10:15:51,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360604454] [2022-10-17 10:15:51,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:15:51,660 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-17 10:15:51,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-10-17 10:15:51,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-17 10:15:51,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-17 10:15:51,661 INFO L87 Difference]: Start difference. First operand 788 states and 879 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) [2022-10-17 10:15:51,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:15:51,761 INFO L93 Difference]: Finished difference Result 773 states and 857 transitions. [2022-10-17 10:15:51,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-17 10:15:51,762 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 [2022-10-17 10:15:51,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:15:51,767 INFO L225 Difference]: With dead ends: 773 [2022-10-17 10:15:51,768 INFO L226 Difference]: Without dead ends: 773 [2022-10-17 10:15:51,768 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 [2022-10-17 10:15:51,771 INFO L413 NwaCegarLoop]: 762 mSDtfsCounter, 744 mSDsluCounter, 785 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 757 SdHoareTripleChecker+Valid, 1547 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 [2022-10-17 10:15:51,771 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [757 Valid, 1547 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-17 10:15:51,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 773 states. [2022-10-17 10:15:51,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 773 to 766. [2022-10-17 10:15:51,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 766 states, 421 states have (on average 1.9572446555819478) internal successors, (824), 760 states have internal predecessors, (824), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2022-10-17 10:15:51,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 766 states to 766 states and 850 transitions. [2022-10-17 10:15:51,797 INFO L78 Accepts]: Start accepts. Automaton has 766 states and 850 transitions. Word has length 13 [2022-10-17 10:15:51,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:15:51,797 INFO L495 AbstractCegarLoop]: Abstraction has 766 states and 850 transitions. [2022-10-17 10:15:51,797 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) [2022-10-17 10:15:51,798 INFO L276 IsEmpty]: Start isEmpty. Operand 766 states and 850 transitions. [2022-10-17 10:15:51,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-10-17 10:15:51,800 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:15:51,800 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] [2022-10-17 10:15:51,812 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_202b077d-d7c2-4bd8-9656-0cc95d477208/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (7)] Ended with exit code 0 [2022-10-17 10:15:52,011 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_202b077d-d7c2-4bd8-9656-0cc95d477208/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 [2022-10-17 10:15:52,012 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr42REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 432 more)] === [2022-10-17 10:15:52,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:15:52,013 INFO L85 PathProgramCache]: Analyzing trace with hash -22216187, now seen corresponding path program 1 times [2022-10-17 10:15:52,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-10-17 10:15:52,013 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [740688147] [2022-10-17 10:15:52,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:15:52,013 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-10-17 10:15:52,014 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_202b077d-d7c2-4bd8-9656-0cc95d477208/bin/uautomizer-J5u9QxTXDZ/mathsat [2022-10-17 10:15:52,014 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_202b077d-d7c2-4bd8-9656-0cc95d477208/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-10-17 10:15:52,015 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_202b077d-d7c2-4bd8-9656-0cc95d477208/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-10-17 10:15:52,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:15:52,164 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 4 conjunts are in the unsatisfiable core [2022-10-17 10:15:52,167 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:15:52,174 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-10-17 10:15:52,263 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:15:52,264 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 10:15:52,264 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-10-17 10:15:52,264 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [740688147] [2022-10-17 10:15:52,266 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [740688147] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:15:52,266 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:15:52,266 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 10:15:52,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115729623] [2022-10-17 10:15:52,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:15:52,268 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-17 10:15:52,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-10-17 10:15:52,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-17 10:15:52,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-17 10:15:52,270 INFO L87 Difference]: Start difference. First operand 766 states and 850 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) [2022-10-17 10:15:54,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:15:54,370 INFO L93 Difference]: Finished difference Result 993 states and 1108 transitions. [2022-10-17 10:15:54,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-17 10:15:54,371 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 [2022-10-17 10:15:54,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:15:54,377 INFO L225 Difference]: With dead ends: 993 [2022-10-17 10:15:54,377 INFO L226 Difference]: Without dead ends: 993 [2022-10-17 10:15:54,378 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 [2022-10-17 10:15:54,378 INFO L413 NwaCegarLoop]: 418 mSDtfsCounter, 1151 mSDsluCounter, 300 mSDsCounter, 0 mSdLazyCounter, 703 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1161 SdHoareTripleChecker+Valid, 718 SdHoareTripleChecker+Invalid, 744 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 703 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-10-17 10:15:54,379 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1161 Valid, 718 Invalid, 744 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 703 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-10-17 10:15:54,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 993 states. [2022-10-17 10:15:54,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 993 to 762. [2022-10-17 10:15:54,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 762 states, 421 states have (on average 1.9477434679334917) internal successors, (820), 756 states have internal predecessors, (820), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2022-10-17 10:15:54,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 762 states to 762 states and 846 transitions. [2022-10-17 10:15:54,404 INFO L78 Accepts]: Start accepts. Automaton has 762 states and 846 transitions. Word has length 27 [2022-10-17 10:15:54,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:15:54,404 INFO L495 AbstractCegarLoop]: Abstraction has 762 states and 846 transitions. [2022-10-17 10:15:54,404 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) [2022-10-17 10:15:54,405 INFO L276 IsEmpty]: Start isEmpty. Operand 762 states and 846 transitions. [2022-10-17 10:15:54,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-10-17 10:15:54,406 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:15:54,406 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] [2022-10-17 10:15:54,425 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_202b077d-d7c2-4bd8-9656-0cc95d477208/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-10-17 10:15:54,617 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_202b077d-d7c2-4bd8-9656-0cc95d477208/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 [2022-10-17 10:15:54,617 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr43REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 432 more)] === [2022-10-17 10:15:54,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:15:54,618 INFO L85 PathProgramCache]: Analyzing trace with hash -22216186, now seen corresponding path program 1 times [2022-10-17 10:15:54,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-10-17 10:15:54,618 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [484928029] [2022-10-17 10:15:54,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:15:54,618 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-10-17 10:15:54,619 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_202b077d-d7c2-4bd8-9656-0cc95d477208/bin/uautomizer-J5u9QxTXDZ/mathsat [2022-10-17 10:15:54,619 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_202b077d-d7c2-4bd8-9656-0cc95d477208/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-10-17 10:15:54,620 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_202b077d-d7c2-4bd8-9656-0cc95d477208/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-10-17 10:15:54,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:15:54,770 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 6 conjunts are in the unsatisfiable core [2022-10-17 10:15:54,773 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:15:54,785 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-10-17 10:15:55,000 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:15:55,000 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 10:15:55,000 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-10-17 10:15:55,001 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [484928029] [2022-10-17 10:15:55,001 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [484928029] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:15:55,001 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:15:55,001 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 10:15:55,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147901856] [2022-10-17 10:15:55,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:15:55,002 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-17 10:15:55,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-10-17 10:15:55,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-17 10:15:55,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-17 10:15:55,003 INFO L87 Difference]: Start difference. First operand 762 states and 846 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) [2022-10-17 10:15:58,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:15:58,119 INFO L93 Difference]: Finished difference Result 1043 states and 1128 transitions. [2022-10-17 10:15:58,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-17 10:15:58,120 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 [2022-10-17 10:15:58,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:15:58,126 INFO L225 Difference]: With dead ends: 1043 [2022-10-17 10:15:58,127 INFO L226 Difference]: Without dead ends: 1043 [2022-10-17 10:15:58,127 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 [2022-10-17 10:15:58,128 INFO L413 NwaCegarLoop]: 604 mSDtfsCounter, 561 mSDsluCounter, 650 mSDsCounter, 0 mSdLazyCounter, 902 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 571 SdHoareTripleChecker+Valid, 1254 SdHoareTripleChecker+Invalid, 906 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 902 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-10-17 10:15:58,128 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [571 Valid, 1254 Invalid, 906 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 902 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2022-10-17 10:15:58,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1043 states. [2022-10-17 10:15:58,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1043 to 758. [2022-10-17 10:15:58,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 758 states, 421 states have (on average 1.9382422802850356) internal successors, (816), 752 states have internal predecessors, (816), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2022-10-17 10:15:58,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 758 states to 758 states and 842 transitions. [2022-10-17 10:15:58,152 INFO L78 Accepts]: Start accepts. Automaton has 758 states and 842 transitions. Word has length 27 [2022-10-17 10:15:58,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:15:58,152 INFO L495 AbstractCegarLoop]: Abstraction has 758 states and 842 transitions. [2022-10-17 10:15:58,152 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) [2022-10-17 10:15:58,152 INFO L276 IsEmpty]: Start isEmpty. Operand 758 states and 842 transitions. [2022-10-17 10:15:58,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-10-17 10:15:58,154 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:15:58,154 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] [2022-10-17 10:15:58,173 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_202b077d-d7c2-4bd8-9656-0cc95d477208/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-10-17 10:15:58,373 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_202b077d-d7c2-4bd8-9656-0cc95d477208/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 [2022-10-17 10:15:58,374 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr108REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 432 more)] === [2022-10-17 10:15:58,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:15:58,375 INFO L85 PathProgramCache]: Analyzing trace with hash 810363537, now seen corresponding path program 1 times [2022-10-17 10:15:58,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-10-17 10:15:58,375 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [139744677] [2022-10-17 10:15:58,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:15:58,376 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-10-17 10:15:58,376 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_202b077d-d7c2-4bd8-9656-0cc95d477208/bin/uautomizer-J5u9QxTXDZ/mathsat [2022-10-17 10:15:58,377 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_202b077d-d7c2-4bd8-9656-0cc95d477208/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-10-17 10:15:58,417 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_202b077d-d7c2-4bd8-9656-0cc95d477208/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-10-17 10:15:58,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:15:58,601 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 3 conjunts are in the unsatisfiable core [2022-10-17 10:15:58,605 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:15:58,665 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:15:58,665 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 10:15:58,665 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-10-17 10:15:58,666 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [139744677] [2022-10-17 10:15:58,666 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [139744677] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:15:58,666 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:15:58,666 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-17 10:15:58,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864022527] [2022-10-17 10:15:58,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:15:58,667 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-17 10:15:58,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-10-17 10:15:58,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-17 10:15:58,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-17 10:15:58,669 INFO L87 Difference]: Start difference. First operand 758 states and 842 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) [2022-10-17 10:15:58,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:15:58,737 INFO L93 Difference]: Finished difference Result 758 states and 838 transitions. [2022-10-17 10:15:58,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-17 10:15:58,737 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 [2022-10-17 10:15:58,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:15:58,742 INFO L225 Difference]: With dead ends: 758 [2022-10-17 10:15:58,742 INFO L226 Difference]: Without dead ends: 758 [2022-10-17 10:15:58,743 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 [2022-10-17 10:15:58,745 INFO L413 NwaCegarLoop]: 756 mSDtfsCounter, 720 mSDsluCounter, 769 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 733 SdHoareTripleChecker+Valid, 1525 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-17 10:15:58,745 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [733 Valid, 1525 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-17 10:15:58,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 758 states. [2022-10-17 10:15:58,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 758 to 752. [2022-10-17 10:15:58,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 752 states, 415 states have (on average 1.9421686746987952) internal successors, (806), 746 states have internal predecessors, (806), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2022-10-17 10:15:58,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 752 states to 752 states and 832 transitions. [2022-10-17 10:15:58,802 INFO L78 Accepts]: Start accepts. Automaton has 752 states and 832 transitions. Word has length 42 [2022-10-17 10:15:58,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:15:58,803 INFO L495 AbstractCegarLoop]: Abstraction has 752 states and 832 transitions. [2022-10-17 10:15:58,804 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) [2022-10-17 10:15:58,804 INFO L276 IsEmpty]: Start isEmpty. Operand 752 states and 832 transitions. [2022-10-17 10:15:58,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-10-17 10:15:58,808 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:15:58,808 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] [2022-10-17 10:15:58,828 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_202b077d-d7c2-4bd8-9656-0cc95d477208/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-10-17 10:15:59,021 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_202b077d-d7c2-4bd8-9656-0cc95d477208/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 [2022-10-17 10:15:59,022 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr108REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 432 more)] === [2022-10-17 10:15:59,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:15:59,022 INFO L85 PathProgramCache]: Analyzing trace with hash 2087041861, now seen corresponding path program 1 times [2022-10-17 10:15:59,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-10-17 10:15:59,023 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2030115052] [2022-10-17 10:15:59,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:15:59,023 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-10-17 10:15:59,023 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_202b077d-d7c2-4bd8-9656-0cc95d477208/bin/uautomizer-J5u9QxTXDZ/mathsat [2022-10-17 10:15:59,024 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_202b077d-d7c2-4bd8-9656-0cc95d477208/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-10-17 10:15:59,026 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_202b077d-d7c2-4bd8-9656-0cc95d477208/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-10-17 10:15:59,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:15:59,261 INFO L263 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 3 conjunts are in the unsatisfiable core [2022-10-17 10:15:59,265 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:15:59,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:15:59,544 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 10:15:59,544 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-10-17 10:15:59,544 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2030115052] [2022-10-17 10:15:59,544 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2030115052] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:15:59,544 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:15:59,545 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 10:15:59,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781056747] [2022-10-17 10:15:59,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:15:59,545 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 10:15:59,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-10-17 10:15:59,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 10:15:59,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:15:59,546 INFO L87 Difference]: Start difference. First operand 752 states and 832 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) [2022-10-17 10:15:59,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:15:59,846 INFO L93 Difference]: Finished difference Result 993 states and 1082 transitions. [2022-10-17 10:15:59,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 10:15:59,847 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 [2022-10-17 10:15:59,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:15:59,854 INFO L225 Difference]: With dead ends: 993 [2022-10-17 10:15:59,854 INFO L226 Difference]: Without dead ends: 993 [2022-10-17 10:15:59,854 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 [2022-10-17 10:15:59,855 INFO L413 NwaCegarLoop]: 835 mSDtfsCounter, 269 mSDsluCounter, 630 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 271 SdHoareTripleChecker+Valid, 1465 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-10-17 10:15:59,855 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [271 Valid, 1465 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-10-17 10:15:59,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 993 states. [2022-10-17 10:15:59,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 993 to 798. [2022-10-17 10:15:59,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 798 states, 461 states have (on average 1.8481561822125814) internal successors, (852), 792 states have internal predecessors, (852), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2022-10-17 10:15:59,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 798 states to 798 states and 878 transitions. [2022-10-17 10:15:59,878 INFO L78 Accepts]: Start accepts. Automaton has 798 states and 878 transitions. Word has length 50 [2022-10-17 10:15:59,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:15:59,878 INFO L495 AbstractCegarLoop]: Abstraction has 798 states and 878 transitions. [2022-10-17 10:15:59,879 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) [2022-10-17 10:15:59,879 INFO L276 IsEmpty]: Start isEmpty. Operand 798 states and 878 transitions. [2022-10-17 10:15:59,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-10-17 10:15:59,880 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:15:59,880 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] [2022-10-17 10:15:59,901 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_202b077d-d7c2-4bd8-9656-0cc95d477208/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-10-17 10:16:00,093 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_202b077d-d7c2-4bd8-9656-0cc95d477208/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 [2022-10-17 10:16:00,094 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr61REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 432 more)] === [2022-10-17 10:16:00,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:16:00,094 INFO L85 PathProgramCache]: Analyzing trace with hash 1009990608, now seen corresponding path program 1 times [2022-10-17 10:16:00,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-10-17 10:16:00,095 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1345005471] [2022-10-17 10:16:00,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:16:00,095 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-10-17 10:16:00,096 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_202b077d-d7c2-4bd8-9656-0cc95d477208/bin/uautomizer-J5u9QxTXDZ/mathsat [2022-10-17 10:16:00,097 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_202b077d-d7c2-4bd8-9656-0cc95d477208/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-10-17 10:16:00,137 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_202b077d-d7c2-4bd8-9656-0cc95d477208/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-10-17 10:16:00,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:16:00,496 INFO L263 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 8 conjunts are in the unsatisfiable core [2022-10-17 10:16:00,504 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:16:00,520 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-10-17 10:16:00,528 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-10-17 10:16:01,106 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 10:16:01,108 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-10-17 10:16:01,129 INFO L356 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-10-17 10:16:01,129 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-10-17 10:16:01,151 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:16:01,151 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 10:16:01,151 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-10-17 10:16:01,151 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1345005471] [2022-10-17 10:16:01,151 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1345005471] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:16:01,152 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:16:01,152 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 10:16:01,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173197831] [2022-10-17 10:16:01,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:16:01,153 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-17 10:16:01,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-10-17 10:16:01,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-17 10:16:01,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-10-17 10:16:01,154 INFO L87 Difference]: Start difference. First operand 798 states and 878 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) [2022-10-17 10:16:03,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:16:03,009 INFO L93 Difference]: Finished difference Result 767 states and 848 transitions. [2022-10-17 10:16:03,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-17 10:16:03,010 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 [2022-10-17 10:16:03,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:16:03,015 INFO L225 Difference]: With dead ends: 767 [2022-10-17 10:16:03,015 INFO L226 Difference]: Without dead ends: 767 [2022-10-17 10:16:03,016 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 [2022-10-17 10:16:03,017 INFO L413 NwaCegarLoop]: 409 mSDtfsCounter, 441 mSDsluCounter, 268 mSDsCounter, 0 mSdLazyCounter, 623 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 444 SdHoareTripleChecker+Valid, 677 SdHoareTripleChecker+Invalid, 668 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 623 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-10-17 10:16:03,017 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [444 Valid, 677 Invalid, 668 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 623 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-10-17 10:16:03,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 767 states. [2022-10-17 10:16:03,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 767 to 728. [2022-10-17 10:16:03,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 728 states, 429 states have (on average 1.7435897435897436) internal successors, (748), 722 states have internal predecessors, (748), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2022-10-17 10:16:03,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 728 states to 728 states and 774 transitions. [2022-10-17 10:16:03,038 INFO L78 Accepts]: Start accepts. Automaton has 728 states and 774 transitions. Word has length 53 [2022-10-17 10:16:03,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:16:03,039 INFO L495 AbstractCegarLoop]: Abstraction has 728 states and 774 transitions. [2022-10-17 10:16:03,039 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) [2022-10-17 10:16:03,039 INFO L276 IsEmpty]: Start isEmpty. Operand 728 states and 774 transitions. [2022-10-17 10:16:03,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-10-17 10:16:03,040 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:16:03,041 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] [2022-10-17 10:16:03,089 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_202b077d-d7c2-4bd8-9656-0cc95d477208/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2022-10-17 10:16:03,288 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_202b077d-d7c2-4bd8-9656-0cc95d477208/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 [2022-10-17 10:16:03,289 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr66REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 432 more)] === [2022-10-17 10:16:03,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:16:03,290 INFO L85 PathProgramCache]: Analyzing trace with hash -1993678057, now seen corresponding path program 1 times [2022-10-17 10:16:03,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-10-17 10:16:03,291 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [448931004] [2022-10-17 10:16:03,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:16:03,291 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-10-17 10:16:03,291 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_202b077d-d7c2-4bd8-9656-0cc95d477208/bin/uautomizer-J5u9QxTXDZ/mathsat [2022-10-17 10:16:03,293 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_202b077d-d7c2-4bd8-9656-0cc95d477208/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-10-17 10:16:03,333 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_202b077d-d7c2-4bd8-9656-0cc95d477208/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-10-17 10:16:03,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:16:03,590 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 7 conjunts are in the unsatisfiable core [2022-10-17 10:16:03,596 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:16:03,612 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-10-17 10:16:03,633 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 [2022-10-17 10:16:03,666 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 [2022-10-17 10:16:03,680 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:16:03,680 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 10:16:03,680 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-10-17 10:16:03,680 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [448931004] [2022-10-17 10:16:03,681 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [448931004] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:16:03,681 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:16:03,681 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-17 10:16:03,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789806871] [2022-10-17 10:16:03,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:16:03,682 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-17 10:16:03,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-10-17 10:16:03,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-17 10:16:03,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-10-17 10:16:03,683 INFO L87 Difference]: Start difference. First operand 728 states and 774 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) [2022-10-17 10:16:05,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:16:05,731 INFO L93 Difference]: Finished difference Result 727 states and 773 transitions. [2022-10-17 10:16:05,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-10-17 10:16:05,732 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 [2022-10-17 10:16:05,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:16:05,737 INFO L225 Difference]: With dead ends: 727 [2022-10-17 10:16:05,737 INFO L226 Difference]: Without dead ends: 727 [2022-10-17 10:16:05,737 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-10-17 10:16:05,738 INFO L413 NwaCegarLoop]: 722 mSDtfsCounter, 4 mSDsluCounter, 1128 mSDsCounter, 0 mSdLazyCounter, 1043 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 1850 SdHoareTripleChecker+Invalid, 1044 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1043 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-10-17 10:16:05,739 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 1850 Invalid, 1044 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1043 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-10-17 10:16:05,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 727 states. [2022-10-17 10:16:05,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 727 to 727. [2022-10-17 10:16:05,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 727 states, 429 states have (on average 1.7412587412587412) internal successors, (747), 721 states have internal predecessors, (747), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2022-10-17 10:16:05,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 727 states to 727 states and 773 transitions. [2022-10-17 10:16:05,759 INFO L78 Accepts]: Start accepts. Automaton has 727 states and 773 transitions. Word has length 58 [2022-10-17 10:16:05,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:16:05,759 INFO L495 AbstractCegarLoop]: Abstraction has 727 states and 773 transitions. [2022-10-17 10:16:05,759 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) [2022-10-17 10:16:05,760 INFO L276 IsEmpty]: Start isEmpty. Operand 727 states and 773 transitions. [2022-10-17 10:16:05,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-10-17 10:16:05,760 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:16:05,761 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] [2022-10-17 10:16:05,791 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_202b077d-d7c2-4bd8-9656-0cc95d477208/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2022-10-17 10:16:05,976 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_202b077d-d7c2-4bd8-9656-0cc95d477208/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 [2022-10-17 10:16:05,976 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr67REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 432 more)] === [2022-10-17 10:16:05,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:16:05,977 INFO L85 PathProgramCache]: Analyzing trace with hash -1993678056, now seen corresponding path program 1 times [2022-10-17 10:16:05,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-10-17 10:16:05,978 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [627110620] [2022-10-17 10:16:05,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:16:05,978 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-10-17 10:16:05,979 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_202b077d-d7c2-4bd8-9656-0cc95d477208/bin/uautomizer-J5u9QxTXDZ/mathsat [2022-10-17 10:16:05,980 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_202b077d-d7c2-4bd8-9656-0cc95d477208/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-10-17 10:16:05,997 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_202b077d-d7c2-4bd8-9656-0cc95d477208/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2022-10-17 10:16:06,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:16:06,267 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 12 conjunts are in the unsatisfiable core [2022-10-17 10:16:06,271 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:16:06,313 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-10-17 10:16:06,343 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 [2022-10-17 10:16:06,355 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 [2022-10-17 10:16:06,416 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 [2022-10-17 10:16:06,425 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 [2022-10-17 10:16:06,442 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:16:06,442 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 10:16:06,442 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-10-17 10:16:06,442 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [627110620] [2022-10-17 10:16:06,443 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [627110620] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:16:06,443 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:16:06,443 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-17 10:16:06,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324017685] [2022-10-17 10:16:06,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:16:06,443 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-17 10:16:06,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-10-17 10:16:06,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-17 10:16:06,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-10-17 10:16:06,444 INFO L87 Difference]: Start difference. First operand 727 states and 773 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)