./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test8-1.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_986c8380-9bb1-4a53-97b0-758c5bd090f9/bin/uautomizer-J5u9QxTXDZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_986c8380-9bb1-4a53-97b0-758c5bd090f9/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_986c8380-9bb1-4a53-97b0-758c5bd090f9/bin/uautomizer-J5u9QxTXDZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_986c8380-9bb1-4a53-97b0-758c5bd090f9/bin/uautomizer-J5u9QxTXDZ/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test8-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_986c8380-9bb1-4a53-97b0-758c5bd090f9/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_986c8380-9bb1-4a53-97b0-758c5bd090f9/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 3b6a7e09bdf002daf4e1e371c35be311dd644a61b41d9b32022b9ee835751b90 --- 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 10:55:39,059 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 10:55:39,066 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 10:55:39,118 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 10:55:39,119 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 10:55:39,123 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 10:55:39,126 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 10:55:39,132 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 10:55:39,134 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 10:55:39,140 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 10:55:39,140 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 10:55:39,142 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 10:55:39,142 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 10:55:39,143 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 10:55:39,144 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 10:55:39,145 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 10:55:39,146 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 10:55:39,147 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 10:55:39,149 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 10:55:39,151 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 10:55:39,153 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 10:55:39,156 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 10:55:39,160 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 10:55:39,161 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 10:55:39,168 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 10:55:39,173 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 10:55:39,173 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 10:55:39,175 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 10:55:39,176 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 10:55:39,177 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 10:55:39,178 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 10:55:39,179 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 10:55:39,181 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 10:55:39,183 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 10:55:39,184 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 10:55:39,185 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 10:55:39,185 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 10:55:39,186 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 10:55:39,186 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 10:55:39,187 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 10:55:39,188 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 10:55:39,188 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_986c8380-9bb1-4a53-97b0-758c5bd090f9/bin/uautomizer-J5u9QxTXDZ/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-10-17 10:55:39,230 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 10:55:39,230 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 10:55:39,231 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-17 10:55:39,231 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-17 10:55:39,232 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-17 10:55:39,232 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-17 10:55:39,233 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-17 10:55:39,233 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-17 10:55:39,233 INFO L138 SettingsManager]: * Use SBE=true [2022-10-17 10:55:39,234 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 10:55:39,235 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-17 10:55:39,235 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-10-17 10:55:39,235 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-17 10:55:39,235 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-17 10:55:39,236 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 10:55:39,236 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-10-17 10:55:39,236 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-10-17 10:55:39,236 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-10-17 10:55:39,236 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-17 10:55:39,237 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-10-17 10:55:39,237 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-17 10:55:39,237 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 10:55:39,237 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 10:55:39,237 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-17 10:55:39,238 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-17 10:55:39,238 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:55:39,261 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 10:55:39,261 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-17 10:55:39,261 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-17 10:55:39,261 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-17 10:55:39,262 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_986c8380-9bb1-4a53-97b0-758c5bd090f9/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_986c8380-9bb1-4a53-97b0-758c5bd090f9/bin/uautomizer-J5u9QxTXDZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3b6a7e09bdf002daf4e1e371c35be311dd644a61b41d9b32022b9ee835751b90 [2022-10-17 10:55:39,547 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 10:55:39,570 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 10:55:39,574 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 10:55:39,576 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 10:55:39,577 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 10:55:39,578 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_986c8380-9bb1-4a53-97b0-758c5bd090f9/bin/uautomizer-J5u9QxTXDZ/../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test8-1.i [2022-10-17 10:55:39,653 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_986c8380-9bb1-4a53-97b0-758c5bd090f9/bin/uautomizer-J5u9QxTXDZ/data/b5d598f83/7acc3585b03541e984a1039b5c224a7e/FLAG6c8977d9a [2022-10-17 10:55:40,211 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 10:55:40,219 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_986c8380-9bb1-4a53-97b0-758c5bd090f9/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test8-1.i [2022-10-17 10:55:40,251 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_986c8380-9bb1-4a53-97b0-758c5bd090f9/bin/uautomizer-J5u9QxTXDZ/data/b5d598f83/7acc3585b03541e984a1039b5c224a7e/FLAG6c8977d9a [2022-10-17 10:55:40,464 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_986c8380-9bb1-4a53-97b0-758c5bd090f9/bin/uautomizer-J5u9QxTXDZ/data/b5d598f83/7acc3585b03541e984a1039b5c224a7e [2022-10-17 10:55:40,466 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 10:55:40,467 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 10:55:40,469 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 10:55:40,469 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 10:55:40,472 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 10:55:40,473 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:55:40" (1/1) ... [2022-10-17 10:55:40,474 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e287af6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:55:40, skipping insertion in model container [2022-10-17 10:55:40,474 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:55:40" (1/1) ... [2022-10-17 10:55:40,481 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 10:55:40,536 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 10:55:41,082 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_986c8380-9bb1-4a53-97b0-758c5bd090f9/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test8-1.i[33021,33034] [2022-10-17 10:55:41,182 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_986c8380-9bb1-4a53-97b0-758c5bd090f9/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test8-1.i[45234,45247] [2022-10-17 10:55:41,191 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:55:41,201 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 10:55:41,202 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@61d68c01 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:55:41, skipping insertion in model container [2022-10-17 10:55:41,202 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 10:55:41,202 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2022-10-17 10:55:41,205 INFO L158 Benchmark]: Toolchain (without parser) took 735.92ms. Allocated memory is still 86.0MB. Free memory was 59.0MB in the beginning and 51.1MB in the end (delta: 7.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-10-17 10:55:41,205 INFO L158 Benchmark]: CDTParser took 0.25ms. Allocated memory is still 86.0MB. Free memory was 59.0MB in the beginning and 58.9MB in the end (delta: 69.9kB). There was no memory consumed. Max. memory is 16.1GB. [2022-10-17 10:55:41,207 INFO L158 Benchmark]: CACSL2BoogieTranslator took 733.69ms. Allocated memory is still 86.0MB. Free memory was 58.7MB in the beginning and 51.1MB in the end (delta: 7.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-10-17 10:55:41,209 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25ms. Allocated memory is still 86.0MB. Free memory was 59.0MB in the beginning and 58.9MB in the end (delta: 69.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 733.69ms. Allocated memory is still 86.0MB. Free memory was 58.7MB in the beginning and 51.1MB in the end (delta: 7.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 766]: 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_986c8380-9bb1-4a53-97b0-758c5bd090f9/bin/uautomizer-J5u9QxTXDZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_986c8380-9bb1-4a53-97b0-758c5bd090f9/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_986c8380-9bb1-4a53-97b0-758c5bd090f9/bin/uautomizer-J5u9QxTXDZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_986c8380-9bb1-4a53-97b0-758c5bd090f9/bin/uautomizer-J5u9QxTXDZ/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test8-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_986c8380-9bb1-4a53-97b0-758c5bd090f9/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_986c8380-9bb1-4a53-97b0-758c5bd090f9/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 3b6a7e09bdf002daf4e1e371c35be311dd644a61b41d9b32022b9ee835751b90 --- 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 10:55:43,529 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 10:55:43,532 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 10:55:43,572 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 10:55:43,572 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 10:55:43,578 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 10:55:43,581 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 10:55:43,588 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 10:55:43,595 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 10:55:43,597 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 10:55:43,598 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 10:55:43,601 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 10:55:43,601 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 10:55:43,607 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 10:55:43,609 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 10:55:43,611 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 10:55:43,612 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 10:55:43,614 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 10:55:43,617 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 10:55:43,624 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 10:55:43,626 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 10:55:43,628 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 10:55:43,631 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 10:55:43,633 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 10:55:43,640 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 10:55:43,641 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 10:55:43,641 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 10:55:43,643 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 10:55:43,644 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 10:55:43,645 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 10:55:43,646 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 10:55:43,646 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 10:55:43,648 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 10:55:43,649 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 10:55:43,650 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 10:55:43,651 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 10:55:43,669 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 10:55:43,670 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 10:55:43,670 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 10:55:43,672 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 10:55:43,673 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 10:55:43,673 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_986c8380-9bb1-4a53-97b0-758c5bd090f9/bin/uautomizer-J5u9QxTXDZ/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2022-10-17 10:55:43,719 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 10:55:43,720 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 10:55:43,721 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-17 10:55:43,721 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-17 10:55:43,722 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-17 10:55:43,722 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-17 10:55:43,724 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-17 10:55:43,724 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-17 10:55:43,724 INFO L138 SettingsManager]: * Use SBE=true [2022-10-17 10:55:43,725 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 10:55:43,726 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-17 10:55:43,726 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-10-17 10:55:43,726 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-17 10:55:43,726 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-17 10:55:43,727 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 10:55:43,727 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-10-17 10:55:43,727 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-10-17 10:55:43,727 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-10-17 10:55:43,727 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-17 10:55:43,728 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-10-17 10:55:43,728 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-10-17 10:55:43,728 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-10-17 10:55:43,728 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-17 10:55:43,729 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 10:55:43,729 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 10:55:43,729 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-17 10:55:43,729 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-17 10:55:43,729 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:55:43,730 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 10:55:43,730 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-17 10:55:43,730 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-10-17 10:55:43,730 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-10-17 10:55:43,731 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-10-17 10:55:43,731 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_986c8380-9bb1-4a53-97b0-758c5bd090f9/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_986c8380-9bb1-4a53-97b0-758c5bd090f9/bin/uautomizer-J5u9QxTXDZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3b6a7e09bdf002daf4e1e371c35be311dd644a61b41d9b32022b9ee835751b90 [2022-10-17 10:55:44,101 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 10:55:44,129 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 10:55:44,132 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 10:55:44,133 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 10:55:44,136 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 10:55:44,138 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_986c8380-9bb1-4a53-97b0-758c5bd090f9/bin/uautomizer-J5u9QxTXDZ/../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test8-1.i [2022-10-17 10:55:44,211 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_986c8380-9bb1-4a53-97b0-758c5bd090f9/bin/uautomizer-J5u9QxTXDZ/data/9c2793c97/bc2f9aed792742c9912fec2696b0f54e/FLAG048c314da [2022-10-17 10:55:44,935 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 10:55:44,936 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_986c8380-9bb1-4a53-97b0-758c5bd090f9/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test8-1.i [2022-10-17 10:55:44,957 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_986c8380-9bb1-4a53-97b0-758c5bd090f9/bin/uautomizer-J5u9QxTXDZ/data/9c2793c97/bc2f9aed792742c9912fec2696b0f54e/FLAG048c314da [2022-10-17 10:55:45,148 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_986c8380-9bb1-4a53-97b0-758c5bd090f9/bin/uautomizer-J5u9QxTXDZ/data/9c2793c97/bc2f9aed792742c9912fec2696b0f54e [2022-10-17 10:55:45,151 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 10:55:45,152 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 10:55:45,154 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 10:55:45,167 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 10:55:45,171 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 10:55:45,171 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:55:45" (1/1) ... [2022-10-17 10:55:45,172 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2905c9f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:55:45, skipping insertion in model container [2022-10-17 10:55:45,173 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:55:45" (1/1) ... [2022-10-17 10:55:45,180 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 10:55:45,271 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 10:55:45,721 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_986c8380-9bb1-4a53-97b0-758c5bd090f9/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test8-1.i[33021,33034] [2022-10-17 10:55:45,909 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_986c8380-9bb1-4a53-97b0-758c5bd090f9/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test8-1.i[45234,45247] [2022-10-17 10:55:45,917 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:55:45,936 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-10-17 10:55:45,954 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 10:55:45,992 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_986c8380-9bb1-4a53-97b0-758c5bd090f9/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test8-1.i[33021,33034] [2022-10-17 10:55:46,092 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_986c8380-9bb1-4a53-97b0-758c5bd090f9/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test8-1.i[45234,45247] [2022-10-17 10:55:46,098 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:55:46,107 INFO L203 MainTranslator]: Completed pre-run [2022-10-17 10:55:46,182 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_986c8380-9bb1-4a53-97b0-758c5bd090f9/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test8-1.i[33021,33034] [2022-10-17 10:55:46,230 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_986c8380-9bb1-4a53-97b0-758c5bd090f9/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test8-1.i[45234,45247] [2022-10-17 10:55:46,232 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:55:46,278 INFO L208 MainTranslator]: Completed translation [2022-10-17 10:55:46,278 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:55:46 WrapperNode [2022-10-17 10:55:46,278 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 10:55:46,279 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-17 10:55:46,279 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-17 10:55:46,280 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-17 10:55:46,286 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:55:46" (1/1) ... [2022-10-17 10:55:46,331 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:55:46" (1/1) ... [2022-10-17 10:55:46,394 INFO L138 Inliner]: procedures = 180, calls = 297, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 1011 [2022-10-17 10:55:46,394 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-17 10:55:46,395 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-17 10:55:46,396 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-17 10:55:46,396 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-17 10:55:46,405 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:55:46" (1/1) ... [2022-10-17 10:55:46,405 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:55:46" (1/1) ... [2022-10-17 10:55:46,418 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:55:46" (1/1) ... [2022-10-17 10:55:46,418 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:55:46" (1/1) ... [2022-10-17 10:55:46,498 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:55:46" (1/1) ... [2022-10-17 10:55:46,515 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:55:46" (1/1) ... [2022-10-17 10:55:46,520 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:55:46" (1/1) ... [2022-10-17 10:55:46,527 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:55:46" (1/1) ... [2022-10-17 10:55:46,538 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-17 10:55:46,545 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-17 10:55:46,545 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-17 10:55:46,545 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-17 10:55:46,546 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:55:46" (1/1) ... [2022-10-17 10:55:46,553 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:55:46,564 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_986c8380-9bb1-4a53-97b0-758c5bd090f9/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:55:46,577 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_986c8380-9bb1-4a53-97b0-758c5bd090f9/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-17 10:55:46,583 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_986c8380-9bb1-4a53-97b0-758c5bd090f9/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-17 10:55:46,620 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2022-10-17 10:55:46,620 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-10-17 10:55:46,621 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-10-17 10:55:46,621 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-10-17 10:55:46,621 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-10-17 10:55:46,621 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-10-17 10:55:46,621 INFO L130 BoogieDeclarations]: Found specification of procedure test_int [2022-10-17 10:55:46,621 INFO L138 BoogieDeclarations]: Found implementation of procedure test_int [2022-10-17 10:55:46,622 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-10-17 10:55:46,622 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-17 10:55:46,622 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-10-17 10:55:46,622 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-10-17 10:55:46,622 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2022-10-17 10:55:46,622 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-10-17 10:55:46,622 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-10-17 10:55:46,623 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-10-17 10:55:46,623 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-10-17 10:55:46,623 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-17 10:55:46,623 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-17 10:55:46,859 INFO L235 CfgBuilder]: Building ICFG [2022-10-17 10:55:46,861 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-17 10:55:46,864 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-10-17 10:55:52,177 INFO L276 CfgBuilder]: Performing block encoding [2022-10-17 10:55:52,205 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-17 10:55:52,205 INFO L300 CfgBuilder]: Removed 62 assume(true) statements. [2022-10-17 10:55:52,210 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:55:52 BoogieIcfgContainer [2022-10-17 10:55:52,210 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-17 10:55:52,213 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-17 10:55:52,213 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-17 10:55:52,217 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-17 10:55:52,217 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.10 10:55:45" (1/3) ... [2022-10-17 10:55:52,218 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1204bdcf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:55:52, skipping insertion in model container [2022-10-17 10:55:52,218 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:55:46" (2/3) ... [2022-10-17 10:55:52,219 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1204bdcf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:55:52, skipping insertion in model container [2022-10-17 10:55:52,219 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:55:52" (3/3) ... [2022-10-17 10:55:52,221 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_JEN_test8-1.i [2022-10-17 10:55:52,242 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-17 10:55:52,242 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 536 error locations. [2022-10-17 10:55:52,336 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-17 10:55:52,347 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;@22768528, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-17 10:55:52,348 INFO L358 AbstractCegarLoop]: Starting to check reachability of 536 error locations. [2022-10-17 10:55:52,358 INFO L276 IsEmpty]: Start isEmpty. Operand has 1097 states, 540 states have (on average 2.240740740740741) internal successors, (1210), 1088 states have internal predecessors, (1210), 20 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (20), 6 states have call predecessors, (20), 20 states have call successors, (20) [2022-10-17 10:55:52,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-10-17 10:55:52,364 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:55:52,365 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-10-17 10:55:52,365 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 533 more)] === [2022-10-17 10:55:52,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:55:52,373 INFO L85 PathProgramCache]: Analyzing trace with hash 132136, now seen corresponding path program 1 times [2022-10-17 10:55:52,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-10-17 10:55:52,386 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1089738859] [2022-10-17 10:55:52,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:55:52,387 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-10-17 10:55:52,388 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_986c8380-9bb1-4a53-97b0-758c5bd090f9/bin/uautomizer-J5u9QxTXDZ/mathsat [2022-10-17 10:55:52,394 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_986c8380-9bb1-4a53-97b0-758c5bd090f9/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-10-17 10:55:52,410 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_986c8380-9bb1-4a53-97b0-758c5bd090f9/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-10-17 10:55:52,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:55:52,561 INFO L263 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 3 conjunts are in the unsatisfiable core [2022-10-17 10:55:52,568 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:55:52,648 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-10-17 10:55:52,665 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 10:55:52,665 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 10:55:52,666 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-10-17 10:55:52,667 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1089738859] [2022-10-17 10:55:52,667 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1089738859] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:55:52,668 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:55:52,668 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-17 10:55:52,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020538469] [2022-10-17 10:55:52,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:55:52,676 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 10:55:52,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-10-17 10:55:52,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 10:55:52,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:55:52,721 INFO L87 Difference]: Start difference. First operand has 1097 states, 540 states have (on average 2.240740740740741) internal successors, (1210), 1088 states have internal predecessors, (1210), 20 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (20), 6 states have call predecessors, (20), 20 states have call successors, (20) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 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 10:55:55,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:55:55,036 INFO L93 Difference]: Finished difference Result 1100 states and 1186 transitions. [2022-10-17 10:55:55,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 10:55:55,039 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 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 3 [2022-10-17 10:55:55,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:55:55,064 INFO L225 Difference]: With dead ends: 1100 [2022-10-17 10:55:55,065 INFO L226 Difference]: Without dead ends: 1098 [2022-10-17 10:55:55,070 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 10:55:55,078 INFO L413 NwaCegarLoop]: 696 mSDtfsCounter, 971 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 549 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 975 SdHoareTripleChecker+Valid, 825 SdHoareTripleChecker+Invalid, 565 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 549 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-10-17 10:55:55,080 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [975 Valid, 825 Invalid, 565 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 549 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-10-17 10:55:55,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1098 states. [2022-10-17 10:55:55,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1098 to 1086. [2022-10-17 10:55:55,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1086 states, 543 states have (on average 2.0902394106813995) internal successors, (1135), 1076 states have internal predecessors, (1135), 21 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (21), 7 states have call predecessors, (21), 21 states have call successors, (21) [2022-10-17 10:55:55,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1086 states to 1086 states and 1177 transitions. [2022-10-17 10:55:55,222 INFO L78 Accepts]: Start accepts. Automaton has 1086 states and 1177 transitions. Word has length 3 [2022-10-17 10:55:55,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:55:55,223 INFO L495 AbstractCegarLoop]: Abstraction has 1086 states and 1177 transitions. [2022-10-17 10:55:55,223 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 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 10:55:55,223 INFO L276 IsEmpty]: Start isEmpty. Operand 1086 states and 1177 transitions. [2022-10-17 10:55:55,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-10-17 10:55:55,224 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:55:55,224 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-10-17 10:55:55,237 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_986c8380-9bb1-4a53-97b0-758c5bd090f9/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-10-17 10:55:55,432 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_986c8380-9bb1-4a53-97b0-758c5bd090f9/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 [2022-10-17 10:55:55,432 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 533 more)] === [2022-10-17 10:55:55,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:55:55,434 INFO L85 PathProgramCache]: Analyzing trace with hash 132137, now seen corresponding path program 1 times [2022-10-17 10:55:55,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-10-17 10:55:55,434 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1083849396] [2022-10-17 10:55:55,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:55:55,435 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-10-17 10:55:55,435 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_986c8380-9bb1-4a53-97b0-758c5bd090f9/bin/uautomizer-J5u9QxTXDZ/mathsat [2022-10-17 10:55:55,437 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_986c8380-9bb1-4a53-97b0-758c5bd090f9/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-10-17 10:55:55,459 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_986c8380-9bb1-4a53-97b0-758c5bd090f9/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-10-17 10:55:55,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:55:55,593 INFO L263 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 4 conjunts are in the unsatisfiable core [2022-10-17 10:55:55,598 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:55:55,616 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-10-17 10:55:55,628 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 10:55:55,629 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 10:55:55,629 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-10-17 10:55:55,630 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1083849396] [2022-10-17 10:55:55,630 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1083849396] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:55:55,630 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:55:55,631 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-17 10:55:55,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431759162] [2022-10-17 10:55:55,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:55:55,638 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 10:55:55,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-10-17 10:55:55,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 10:55:55,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:55:55,639 INFO L87 Difference]: Start difference. First operand 1086 states and 1177 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 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 10:55:58,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:55:58,589 INFO L93 Difference]: Finished difference Result 1479 states and 1600 transitions. [2022-10-17 10:55:58,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 10:55:58,590 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 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 3 [2022-10-17 10:55:58,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:55:58,597 INFO L225 Difference]: With dead ends: 1479 [2022-10-17 10:55:58,598 INFO L226 Difference]: Without dead ends: 1479 [2022-10-17 10:55:58,598 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 10:55:58,599 INFO L413 NwaCegarLoop]: 976 mSDtfsCounter, 421 mSDsluCounter, 636 mSDsCounter, 0 mSdLazyCounter, 709 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 422 SdHoareTripleChecker+Valid, 1612 SdHoareTripleChecker+Invalid, 714 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 709 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-10-17 10:55:58,600 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [422 Valid, 1612 Invalid, 714 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 709 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-10-17 10:55:58,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1479 states. [2022-10-17 10:55:58,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1479 to 1290. [2022-10-17 10:55:58,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1290 states, 747 states have (on average 2.0803212851405624) internal successors, (1554), 1279 states have internal predecessors, (1554), 22 states have call successors, (22), 3 states have call predecessors, (22), 3 states have return successors, (22), 8 states have call predecessors, (22), 22 states have call successors, (22) [2022-10-17 10:55:58,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1290 states to 1290 states and 1598 transitions. [2022-10-17 10:55:58,642 INFO L78 Accepts]: Start accepts. Automaton has 1290 states and 1598 transitions. Word has length 3 [2022-10-17 10:55:58,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:55:58,642 INFO L495 AbstractCegarLoop]: Abstraction has 1290 states and 1598 transitions. [2022-10-17 10:55:58,642 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 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 10:55:58,643 INFO L276 IsEmpty]: Start isEmpty. Operand 1290 states and 1598 transitions. [2022-10-17 10:55:58,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-10-17 10:55:58,643 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:55:58,643 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:55:58,664 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_986c8380-9bb1-4a53-97b0-758c5bd090f9/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-10-17 10:55:58,854 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_986c8380-9bb1-4a53-97b0-758c5bd090f9/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 [2022-10-17 10:55:58,855 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 533 more)] === [2022-10-17 10:55:58,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:55:58,856 INFO L85 PathProgramCache]: Analyzing trace with hash 1773817970, now seen corresponding path program 1 times [2022-10-17 10:55:58,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-10-17 10:55:58,857 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1244866762] [2022-10-17 10:55:58,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:55:58,857 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-10-17 10:55:58,857 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_986c8380-9bb1-4a53-97b0-758c5bd090f9/bin/uautomizer-J5u9QxTXDZ/mathsat [2022-10-17 10:55:58,858 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_986c8380-9bb1-4a53-97b0-758c5bd090f9/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-10-17 10:55:58,867 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_986c8380-9bb1-4a53-97b0-758c5bd090f9/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-10-17 10:55:58,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:55:59,003 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 8 conjunts are in the unsatisfiable core [2022-10-17 10:55:59,007 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:55:59,019 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-10-17 10:55:59,025 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 10:55:59,093 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 10:55:59,095 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 10:55:59,115 INFO L356 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-10-17 10:55:59,115 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 10:55:59,142 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 10:55:59,142 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 10:55:59,143 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-10-17 10:55:59,145 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1244866762] [2022-10-17 10:55:59,146 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1244866762] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:55:59,146 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:55:59,146 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 10:55:59,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287642955] [2022-10-17 10:55:59,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:55:59,147 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-17 10:55:59,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-10-17 10:55:59,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-17 10:55:59,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-10-17 10:55:59,148 INFO L87 Difference]: Start difference. First operand 1290 states and 1598 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 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 10:56:02,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:56:02,098 INFO L93 Difference]: Finished difference Result 1295 states and 1601 transitions. [2022-10-17 10:56:02,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-17 10:56:02,098 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 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 7 [2022-10-17 10:56:02,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:56:02,106 INFO L225 Difference]: With dead ends: 1295 [2022-10-17 10:56:02,106 INFO L226 Difference]: Without dead ends: 1295 [2022-10-17 10:56:02,106 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 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 10:56:02,108 INFO L413 NwaCegarLoop]: 419 mSDtfsCounter, 1073 mSDsluCounter, 172 mSDsCounter, 0 mSdLazyCounter, 847 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1079 SdHoareTripleChecker+Valid, 591 SdHoareTripleChecker+Invalid, 867 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 847 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-10-17 10:56:02,108 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1079 Valid, 591 Invalid, 867 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 847 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-10-17 10:56:02,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1295 states. [2022-10-17 10:56:02,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1295 to 1075. [2022-10-17 10:56:02,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1075 states, 543 states have (on average 2.0681399631675874) internal successors, (1123), 1065 states have internal predecessors, (1123), 21 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (21), 7 states have call predecessors, (21), 21 states have call successors, (21) [2022-10-17 10:56:02,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1075 states to 1075 states and 1165 transitions. [2022-10-17 10:56:02,146 INFO L78 Accepts]: Start accepts. Automaton has 1075 states and 1165 transitions. Word has length 7 [2022-10-17 10:56:02,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:56:02,146 INFO L495 AbstractCegarLoop]: Abstraction has 1075 states and 1165 transitions. [2022-10-17 10:56:02,147 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 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 10:56:02,147 INFO L276 IsEmpty]: Start isEmpty. Operand 1075 states and 1165 transitions. [2022-10-17 10:56:02,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-10-17 10:56:02,147 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:56:02,147 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:56:02,163 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_986c8380-9bb1-4a53-97b0-758c5bd090f9/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-10-17 10:56:02,359 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_986c8380-9bb1-4a53-97b0-758c5bd090f9/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 [2022-10-17 10:56:02,360 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 533 more)] === [2022-10-17 10:56:02,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:56:02,360 INFO L85 PathProgramCache]: Analyzing trace with hash -846217710, now seen corresponding path program 1 times [2022-10-17 10:56:02,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-10-17 10:56:02,361 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1999051749] [2022-10-17 10:56:02,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:56:02,361 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-10-17 10:56:02,361 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_986c8380-9bb1-4a53-97b0-758c5bd090f9/bin/uautomizer-J5u9QxTXDZ/mathsat [2022-10-17 10:56:02,362 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_986c8380-9bb1-4a53-97b0-758c5bd090f9/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-10-17 10:56:02,371 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_986c8380-9bb1-4a53-97b0-758c5bd090f9/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-10-17 10:56:02,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:56:02,491 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 3 conjunts are in the unsatisfiable core [2022-10-17 10:56:02,494 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:56:02,502 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 10:56:02,515 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 10:56:02,515 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 10:56:02,516 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-10-17 10:56:02,516 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1999051749] [2022-10-17 10:56:02,516 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1999051749] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:56:02,516 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:56:02,517 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-17 10:56:02,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526046240] [2022-10-17 10:56:02,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:56:02,518 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 10:56:02,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-10-17 10:56:02,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 10:56:02,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:56:02,519 INFO L87 Difference]: Start difference. First operand 1075 states and 1165 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 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 10:56:04,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:56:04,943 INFO L93 Difference]: Finished difference Result 1402 states and 1519 transitions. [2022-10-17 10:56:04,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 10:56:04,949 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 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 8 [2022-10-17 10:56:04,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:56:04,957 INFO L225 Difference]: With dead ends: 1402 [2022-10-17 10:56:04,957 INFO L226 Difference]: Without dead ends: 1402 [2022-10-17 10:56:04,957 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 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 10:56:04,958 INFO L413 NwaCegarLoop]: 993 mSDtfsCounter, 988 mSDsluCounter, 305 mSDsCounter, 0 mSdLazyCounter, 716 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 993 SdHoareTripleChecker+Valid, 1298 SdHoareTripleChecker+Invalid, 770 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 716 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-10-17 10:56:04,961 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [993 Valid, 1298 Invalid, 770 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 716 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-10-17 10:56:04,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1402 states. [2022-10-17 10:56:04,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1402 to 1028. [2022-10-17 10:56:05,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1028 states, 543 states have (on average 1.9797421731123388) internal successors, (1075), 1018 states have internal predecessors, (1075), 21 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (21), 7 states have call predecessors, (21), 21 states have call successors, (21) [2022-10-17 10:56:05,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1028 states to 1028 states and 1117 transitions. [2022-10-17 10:56:05,029 INFO L78 Accepts]: Start accepts. Automaton has 1028 states and 1117 transitions. Word has length 8 [2022-10-17 10:56:05,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:56:05,029 INFO L495 AbstractCegarLoop]: Abstraction has 1028 states and 1117 transitions. [2022-10-17 10:56:05,029 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 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 10:56:05,029 INFO L276 IsEmpty]: Start isEmpty. Operand 1028 states and 1117 transitions. [2022-10-17 10:56:05,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-10-17 10:56:05,030 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:56:05,030 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:56:05,043 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_986c8380-9bb1-4a53-97b0-758c5bd090f9/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-10-17 10:56:05,240 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_986c8380-9bb1-4a53-97b0-758c5bd090f9/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 [2022-10-17 10:56:05,241 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 533 more)] === [2022-10-17 10:56:05,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:56:05,241 INFO L85 PathProgramCache]: Analyzing trace with hash -846217709, now seen corresponding path program 1 times [2022-10-17 10:56:05,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-10-17 10:56:05,242 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [605619425] [2022-10-17 10:56:05,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:56:05,242 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-10-17 10:56:05,242 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_986c8380-9bb1-4a53-97b0-758c5bd090f9/bin/uautomizer-J5u9QxTXDZ/mathsat [2022-10-17 10:56:05,244 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_986c8380-9bb1-4a53-97b0-758c5bd090f9/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-10-17 10:56:05,288 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_986c8380-9bb1-4a53-97b0-758c5bd090f9/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-10-17 10:56:05,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:56:05,378 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 4 conjunts are in the unsatisfiable core [2022-10-17 10:56:05,380 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:56:05,390 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 10:56:05,419 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 10:56:05,420 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 10:56:05,420 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-10-17 10:56:05,420 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [605619425] [2022-10-17 10:56:05,420 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [605619425] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:56:05,421 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:56:05,421 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-17 10:56:05,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1021048168] [2022-10-17 10:56:05,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:56:05,422 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 10:56:05,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-10-17 10:56:05,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 10:56:05,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:56:05,423 INFO L87 Difference]: Start difference. First operand 1028 states and 1117 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 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 10:56:08,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:56:08,281 INFO L93 Difference]: Finished difference Result 1497 states and 1619 transitions. [2022-10-17 10:56:08,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 10:56:08,283 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 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 8 [2022-10-17 10:56:08,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:56:08,292 INFO L225 Difference]: With dead ends: 1497 [2022-10-17 10:56:08,292 INFO L226 Difference]: Without dead ends: 1497 [2022-10-17 10:56:08,292 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 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 10:56:08,293 INFO L413 NwaCegarLoop]: 1212 mSDtfsCounter, 686 mSDsluCounter, 486 mSDsCounter, 0 mSdLazyCounter, 733 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 688 SdHoareTripleChecker+Valid, 1698 SdHoareTripleChecker+Invalid, 747 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 733 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-10-17 10:56:08,294 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [688 Valid, 1698 Invalid, 747 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 733 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-10-17 10:56:08,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1497 states. [2022-10-17 10:56:08,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1497 to 1270. [2022-10-17 10:56:08,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1270 states, 793 states have (on average 1.978562421185372) internal successors, (1569), 1258 states have internal predecessors, (1569), 23 states have call successors, (23), 3 states have call predecessors, (23), 3 states have return successors, (23), 9 states have call predecessors, (23), 23 states have call successors, (23) [2022-10-17 10:56:08,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1270 states to 1270 states and 1615 transitions. [2022-10-17 10:56:08,347 INFO L78 Accepts]: Start accepts. Automaton has 1270 states and 1615 transitions. Word has length 8 [2022-10-17 10:56:08,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:56:08,348 INFO L495 AbstractCegarLoop]: Abstraction has 1270 states and 1615 transitions. [2022-10-17 10:56:08,348 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 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 10:56:08,348 INFO L276 IsEmpty]: Start isEmpty. Operand 1270 states and 1615 transitions. [2022-10-17 10:56:08,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-10-17 10:56:08,349 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:56:08,349 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:56:08,370 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_986c8380-9bb1-4a53-97b0-758c5bd090f9/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-10-17 10:56:08,560 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_986c8380-9bb1-4a53-97b0-758c5bd090f9/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 [2022-10-17 10:56:08,560 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr534ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 533 more)] === [2022-10-17 10:56:08,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:56:08,561 INFO L85 PathProgramCache]: Analyzing trace with hash -652228184, now seen corresponding path program 1 times [2022-10-17 10:56:08,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-10-17 10:56:08,561 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [649692750] [2022-10-17 10:56:08,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:56:08,562 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-10-17 10:56:08,562 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_986c8380-9bb1-4a53-97b0-758c5bd090f9/bin/uautomizer-J5u9QxTXDZ/mathsat [2022-10-17 10:56:08,562 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_986c8380-9bb1-4a53-97b0-758c5bd090f9/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-10-17 10:56:08,563 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_986c8380-9bb1-4a53-97b0-758c5bd090f9/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-10-17 10:56:08,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:56:08,747 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 8 conjunts are in the unsatisfiable core [2022-10-17 10:56:08,749 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:56:08,758 INFO L173 IndexEqualityManager]: detected equality via solver [2022-10-17 10:56:08,759 INFO L173 IndexEqualityManager]: detected equality via solver [2022-10-17 10:56:08,759 INFO L173 IndexEqualityManager]: detected equality via solver [2022-10-17 10:56:08,764 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 30 treesize of output 39 [2022-10-17 10:56:08,823 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-10-17 10:56:08,824 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 70 treesize of output 26 [2022-10-17 10:56:08,848 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 10:56:08,848 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 10:56:08,849 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-10-17 10:56:08,849 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [649692750] [2022-10-17 10:56:08,849 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [649692750] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:56:08,849 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:56:08,849 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-17 10:56:08,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634700952] [2022-10-17 10:56:08,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:56:08,850 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-17 10:56:08,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-10-17 10:56:08,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-17 10:56:08,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-17 10:56:08,851 INFO L87 Difference]: Start difference. First operand 1270 states and 1615 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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 10:56:10,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:56:10,078 INFO L93 Difference]: Finished difference Result 1784 states and 2339 transitions. [2022-10-17 10:56:10,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-17 10:56:10,079 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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 10 [2022-10-17 10:56:10,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:56:10,087 INFO L225 Difference]: With dead ends: 1784 [2022-10-17 10:56:10,087 INFO L226 Difference]: Without dead ends: 1784 [2022-10-17 10:56:10,088 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-10-17 10:56:10,089 INFO L413 NwaCegarLoop]: 1046 mSDtfsCounter, 356 mSDsluCounter, 1982 mSDsCounter, 0 mSdLazyCounter, 254 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 357 SdHoareTripleChecker+Valid, 3028 SdHoareTripleChecker+Invalid, 256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 254 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-10-17 10:56:10,089 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [357 Valid, 3028 Invalid, 256 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 254 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-10-17 10:56:10,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1784 states. [2022-10-17 10:56:10,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1784 to 1272. [2022-10-17 10:56:10,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1272 states, 795 states have (on average 1.9761006289308176) internal successors, (1571), 1260 states have internal predecessors, (1571), 23 states have call successors, (23), 3 states have call predecessors, (23), 3 states have return successors, (23), 9 states have call predecessors, (23), 23 states have call successors, (23) [2022-10-17 10:56:10,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1272 states to 1272 states and 1617 transitions. [2022-10-17 10:56:10,129 INFO L78 Accepts]: Start accepts. Automaton has 1272 states and 1617 transitions. Word has length 10 [2022-10-17 10:56:10,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:56:10,129 INFO L495 AbstractCegarLoop]: Abstraction has 1272 states and 1617 transitions. [2022-10-17 10:56:10,129 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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 10:56:10,129 INFO L276 IsEmpty]: Start isEmpty. Operand 1272 states and 1617 transitions. [2022-10-17 10:56:10,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-10-17 10:56:10,130 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:56:10,130 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:56:10,155 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_986c8380-9bb1-4a53-97b0-758c5bd090f9/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-10-17 10:56:10,342 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_986c8380-9bb1-4a53-97b0-758c5bd090f9/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 [2022-10-17 10:56:10,343 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 533 more)] === [2022-10-17 10:56:10,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:56:10,343 INFO L85 PathProgramCache]: Analyzing trace with hash -413650658, now seen corresponding path program 1 times [2022-10-17 10:56:10,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-10-17 10:56:10,344 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [728088746] [2022-10-17 10:56:10,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:56:10,345 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-10-17 10:56:10,345 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_986c8380-9bb1-4a53-97b0-758c5bd090f9/bin/uautomizer-J5u9QxTXDZ/mathsat [2022-10-17 10:56:10,346 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_986c8380-9bb1-4a53-97b0-758c5bd090f9/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-10-17 10:56:10,392 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_986c8380-9bb1-4a53-97b0-758c5bd090f9/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-10-17 10:56:10,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:56:10,536 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 2 conjunts are in the unsatisfiable core [2022-10-17 10:56:10,538 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:56:10,549 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 10:56:10,550 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 10:56:10,550 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-10-17 10:56:10,550 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [728088746] [2022-10-17 10:56:10,550 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [728088746] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:56:10,550 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:56:10,551 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 10:56:10,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415732905] [2022-10-17 10:56:10,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:56:10,551 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 10:56:10,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-10-17 10:56:10,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 10:56:10,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:56:10,552 INFO L87 Difference]: Start difference. First operand 1272 states and 1617 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 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 10:56:10,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:56:10,592 INFO L93 Difference]: Finished difference Result 1241 states and 1585 transitions. [2022-10-17 10:56:10,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 10:56:10,593 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 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 18 [2022-10-17 10:56:10,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:56:10,600 INFO L225 Difference]: With dead ends: 1241 [2022-10-17 10:56:10,600 INFO L226 Difference]: Without dead ends: 1241 [2022-10-17 10:56:10,600 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 16 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 10:56:10,601 INFO L413 NwaCegarLoop]: 1052 mSDtfsCounter, 964 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 969 SdHoareTripleChecker+Valid, 1144 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 10:56:10,602 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [969 Valid, 1144 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-17 10:56:10,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1241 states. [2022-10-17 10:56:10,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1241 to 1230. [2022-10-17 10:56:10,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1230 states, 777 states have (on average 1.9665379665379665) internal successors, (1528), 1218 states have internal predecessors, (1528), 23 states have call successors, (23), 3 states have call predecessors, (23), 3 states have return successors, (23), 9 states have call predecessors, (23), 23 states have call successors, (23) [2022-10-17 10:56:10,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1230 states to 1230 states and 1574 transitions. [2022-10-17 10:56:10,635 INFO L78 Accepts]: Start accepts. Automaton has 1230 states and 1574 transitions. Word has length 18 [2022-10-17 10:56:10,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:56:10,635 INFO L495 AbstractCegarLoop]: Abstraction has 1230 states and 1574 transitions. [2022-10-17 10:56:10,635 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 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 10:56:10,635 INFO L276 IsEmpty]: Start isEmpty. Operand 1230 states and 1574 transitions. [2022-10-17 10:56:10,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-10-17 10:56:10,636 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:56:10,636 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] [2022-10-17 10:56:10,651 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_986c8380-9bb1-4a53-97b0-758c5bd090f9/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-10-17 10:56:10,848 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_986c8380-9bb1-4a53-97b0-758c5bd090f9/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 [2022-10-17 10:56:10,848 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr39REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 533 more)] === [2022-10-17 10:56:10,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:56:10,849 INFO L85 PathProgramCache]: Analyzing trace with hash 1913675577, now seen corresponding path program 1 times [2022-10-17 10:56:10,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-10-17 10:56:10,850 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [107196594] [2022-10-17 10:56:10,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:56:10,850 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-10-17 10:56:10,850 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_986c8380-9bb1-4a53-97b0-758c5bd090f9/bin/uautomizer-J5u9QxTXDZ/mathsat [2022-10-17 10:56:10,851 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_986c8380-9bb1-4a53-97b0-758c5bd090f9/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-10-17 10:56:10,855 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_986c8380-9bb1-4a53-97b0-758c5bd090f9/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-10-17 10:56:11,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:56:11,035 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 3 conjunts are in the unsatisfiable core [2022-10-17 10:56:11,037 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:56:11,060 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 10:56:11,061 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 10:56:11,061 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-10-17 10:56:11,061 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [107196594] [2022-10-17 10:56:11,061 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [107196594] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:56:11,061 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:56:11,062 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-17 10:56:11,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411362272] [2022-10-17 10:56:11,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:56:11,063 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-17 10:56:11,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-10-17 10:56:11,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-17 10:56:11,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-17 10:56:11,064 INFO L87 Difference]: Start difference. First operand 1230 states and 1574 transitions. Second operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 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 10:56:11,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:56:11,143 INFO L93 Difference]: Finished difference Result 1220 states and 1557 transitions. [2022-10-17 10:56:11,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-17 10:56:11,144 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 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 20 [2022-10-17 10:56:11,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:56:11,150 INFO L225 Difference]: With dead ends: 1220 [2022-10-17 10:56:11,150 INFO L226 Difference]: Without dead ends: 1220 [2022-10-17 10:56:11,151 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 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 10:56:11,151 INFO L413 NwaCegarLoop]: 1007 mSDtfsCounter, 935 mSDsluCounter, 1092 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 940 SdHoareTripleChecker+Valid, 2099 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 10:56:11,152 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [940 Valid, 2099 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-17 10:56:11,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1220 states. [2022-10-17 10:56:11,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1220 to 1208. [2022-10-17 10:56:11,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1208 states, 769 states have (on average 1.9492847854356308) internal successors, (1499), 1196 states have internal predecessors, (1499), 23 states have call successors, (23), 3 states have call predecessors, (23), 3 states have return successors, (23), 9 states have call predecessors, (23), 23 states have call successors, (23) [2022-10-17 10:56:11,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1208 states to 1208 states and 1545 transitions. [2022-10-17 10:56:11,182 INFO L78 Accepts]: Start accepts. Automaton has 1208 states and 1545 transitions. Word has length 20 [2022-10-17 10:56:11,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:56:11,182 INFO L495 AbstractCegarLoop]: Abstraction has 1208 states and 1545 transitions. [2022-10-17 10:56:11,182 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 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 10:56:11,183 INFO L276 IsEmpty]: Start isEmpty. Operand 1208 states and 1545 transitions. [2022-10-17 10:56:11,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-10-17 10:56:11,184 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:56:11,184 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] [2022-10-17 10:56:11,197 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_986c8380-9bb1-4a53-97b0-758c5bd090f9/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-10-17 10:56:11,397 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_986c8380-9bb1-4a53-97b0-758c5bd090f9/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 [2022-10-17 10:56:11,397 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr52REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 533 more)] === [2022-10-17 10:56:11,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:56:11,398 INFO L85 PathProgramCache]: Analyzing trace with hash 1224753126, now seen corresponding path program 1 times [2022-10-17 10:56:11,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-10-17 10:56:11,398 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [342340278] [2022-10-17 10:56:11,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:56:11,398 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-10-17 10:56:11,398 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_986c8380-9bb1-4a53-97b0-758c5bd090f9/bin/uautomizer-J5u9QxTXDZ/mathsat [2022-10-17 10:56:11,399 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_986c8380-9bb1-4a53-97b0-758c5bd090f9/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-10-17 10:56:11,401 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_986c8380-9bb1-4a53-97b0-758c5bd090f9/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-10-17 10:56:11,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:56:11,593 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 4 conjunts are in the unsatisfiable core [2022-10-17 10:56:11,596 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:56:11,601 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 10:56:11,692 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 10:56:11,692 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 10:56:11,692 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-10-17 10:56:11,692 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [342340278] [2022-10-17 10:56:11,693 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [342340278] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:56:11,693 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:56:11,693 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 10:56:11,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535872622] [2022-10-17 10:56:11,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:56:11,694 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-17 10:56:11,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-10-17 10:56:11,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-17 10:56:11,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-17 10:56:11,695 INFO L87 Difference]: Start difference. First operand 1208 states and 1545 transitions. Second operand has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 4 states have internal predecessors, (34), 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)